WO2001018141A1 - Low activation temperature adhesive composition with high peel strength and cohesive failure - Google Patents
Low activation temperature adhesive composition with high peel strength and cohesive failure Download PDFInfo
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- WO2001018141A1 WO2001018141A1 PCT/CA2000/001017 CA0001017W WO0118141A1 WO 2001018141 A1 WO2001018141 A1 WO 2001018141A1 CA 0001017 W CA0001017 W CA 0001017W WO 0118141 A1 WO0118141 A1 WO 0118141A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C09J123/0815—Copolymers of ethene with aliphatic 1-olefins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09J123/0853—Vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2314/00—Polymer mixtures characterised by way of preparation
- C08L2314/06—Metallocene or single site catalysts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/10—Copolymers of styrene with conjugated dienes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal in the substrate
Definitions
- This invention relates to new resin and adhesive compositions, and in particular to low activation temperature adhesive compositions that can be applied as a self- supporting film or can be co-extruded or extrusion coated onto a substrate.
- the adhesive compositions of the present invention bond to both metal and polyolefms, activate at relatively lower temperatures and are easily handled as a free or coextruded film not requiring interleafing or a release paper.
- these adhesive compositions fail 100% cohesively during the peel test.
- Cohesive failure is a desirable attribute in that it can be an indicator of high bond strength, so much so that the bond strength is greater than the cohesive strength of the adhesive.
- Cohesive failure also provides a convenient visual test to assure that multi-layer constructions are properly bonded when other testing methods are not readily available.
- the present invention provides adhesive compositions that possess excellent bonding properties to metallic substrates and to a number of polymeric materials resulting in an adhesive layer with high peel strength.
- the present invention also allows for a relatively lower activation temperature to be used in the manufacture of building panels.
- the adhesive compositions of the present invention may be supplied as an adhesive resin in pellet form or as an adhesive film.
- a resin composition made from admixing starting materials comprising:
- a resin composition made from admixing starting materials comprising:
- Figures la and lb are schematic views of a five-layer laminated structure made using one embodiment of the adhesive composition of the present invention.
- the preferred resin and adhesive compositions of the present invention as described herein are melt blends of a number of polymers. These adhesives can be used in various kinds of applications and possess varying properties depending on the specific application.
- One application for these preferred adhesives is in manufacturing metal panels for the construction industry in which the panels are in the form of a composite structure comprising metal substrates such as aluminum or steel bonded to a polyolefin core such as polyethylene.
- the preferred adhesive compositions of the present invention are used to bond the metal substrates to the polyethylene core.
- the adhesive layer In such an application, it is important for the adhesive layer to provide excellent adhesion of the polyolefin to the metal substrate. As well, it is desirable that the adhesive fail cohesively during application, and should be relatively easy to formulate and use. It has been found that the adhesive compositions of the present invention provide excellent adhesion to metallic substrates and to a number of polymeric materials. They fail 100% cohesively during the peel test. The adhesive compositions can be used as self-supporting films, making them easy to handle and process.
- the preferred adhesive compositions of the present invention activate at lower temperatures than adhesives currently used in manufacturing building panels.
- the activation temperature can be lowered down to about 125 °C. This lowering of the activation temperature results in considerable cost savings and safer operations for panel manufacturers because the use of protective layers for painted surfaces (which are needed at higher temperatures to prevent mottling of the paint) can be eliminated from the manufacturing process.
- the resin composition of the present invention comprises:
- the resin composition of the present invention comprises:
- polyolefin means homopolymers and copolymers of olefins. More specifically, homopolymers include polymers consisting of a single unsaturated olefin such as polyethylene, polypropylene, polybutene or the like where the olefin has 2-20 carbon atoms. Copolymers of olefins include polymers consisting of one or more unsaturated or multiply unsaturated hydrocarbons having 2- 20 carbon atoms.
- Examples include, but are not limited to ethylene/propylene copolymers, ethylene/butene copolymers, ethylene/hexene copolymers, ethylene/octene copolymers, ethylene/styrene copolymers, ethylene/butene/octene copolymers, ethylene/propylene/norbornadiene copolymers and propylene/butene copolymers.
- non-olefin copolymer refers to copolymers of olefins with non-olefins.
- Non-olefms that can be copolymerized with olefins, principally ethylene include but are not limited to: vinyl acetate, acrylate or methacrylate esters having 1-20 carbon atoms, unsaturated anhydrides such as maleic or itaconic anhydride, unsaturated acids such as maleic, fumaric, acrylic, methacrylic or itaconic acid.
- copolymers of olefins and non-olefins include, but are not limited to: ethylene/vinyl acetate, ethylene/methylacrylate, ethylene/butylacrylate.
- These polymers can be made by processes well known in the art, including the use of metallocene catalysts, Ziegler Natta catalysts and other catalysts useful in "low pressure” polymerization processes. Conversely, these polymers may be made in "high pressure” polymerization processes using, for example, free radical initiators. Mixtures and blends of the Polyolefms maybe used.
- the term "functional polyolefin” refers to a polyolefin or a non-olefin copolymer that has specific functional groups capable of reacting to form covalent or ionic bonds.
- a functional polyolefin includes a "grafted polyolefin” as defined below.
- grafted polyolefin refers to a polyolefin, to a non-olefin copolymer or to a mixture or blend of polyolefms and/or non-olefin copolymers, onto which is grafted at least one monomer selected from ethylenically unsaturated carboxylic acids and ethylenically unsaturated carboxylic acid anhydrides, including less preferably, derivatives of such acids, and mixtures thereof.
- acids and anhydrides which may be mono-, di- or polycarboxylic acids are acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, itaconic anhydride, maleic anhydride and substituted maleic anhydride, e.g. dimethyl maleic anhydride or citrotonic anhydride, nadic anhydride, nadic methyl anhydride, and tetrahydrophthalic anhydride, maleic anhydride being particularly preferred.
- Examples of the derivatives of the unsaturated acids are salts, amides, imides and esters, e.g., mono- and disodium maleate, acrylamide, glycidyl methacrylate and dimethyl fumarate.
- Grafted polyolefms are well known in the art and can be produced by a variety of processes including thermal grafting in an extruder or other mixing device, grafting in solution or grafting in a fluidized bed reactor. Blends or mixtures of grafted polyolefms may also be used.
- polystyrenic refers to homopolymers of stryrene or alpha methylstyrene or copolymers of styene with unsaturated monomers such as, but not limited to: ethylene, butene, butadiene, or isoprene. Specific examples include, but are not limited to: ethylene/styrene random or block copolymers, ethylene/butadiene random or block copolymers and hydrogenated and partially hydrogenated butadiene/styrene copolymers. Also useful are polystyrenics further modified for enhanced impact properties and usually referred to as High Impact Polystyrene or HIPS.
- HIPS High Impact Polystyrene
- Blends and mixtures of polystyrenics may also be used.
- Specifc examples include, but are not limited to, High Performance Stryrenics sold by Nova Chemicals and ethylene/styrene copolymers sold by Dow Chemical under the name IndexTM.
- the term "elastomer” also refers to a polyolefin or polystyrenic but is dinstinguised from polyolefin or polystyrenic as described above in having a relatively low level of crystallinity, that is, in being relatively amorphous. Elastomers by definition herein will have a heat a fusion, as measured by Differential Scanning Calorimetry (DSC), at 10 degrees centigrade per minute heating rate, of less than 30 joules/gram.
- DSC Differential Scanning Calorimetry
- a polyolefin elastomer may be a copolymer of ethylene and an alpha olefin and would include low density metallocene ethylene/butene copolymers sold by ExxonMobil under the name "Exact®” or metallocene ethylene/octene copolymers sold by DuPont Dow Elastomers under the name "Engage®”.
- ethylene/propylene copolymers sold by ExxonMobil under the name "Vistalon®”
- ethylene/alpha olefin copolymer sold by Mitsui under the name “Tafrner®”
- ethylene/propylene/norbornadiene copolymers sold by DuPont Dow Elastomers under the name of "Nordel®”
- polybutene rubber polyisobutylene.
- Examples of a polystyrenic elastomer would include, for example, di-block and tri-block copolymers sold by Shell under the name "Kraton®” or those sold by Firestone under the name “Stereon®”.
- the preferred adhesive compositions of the present invention may contain small amounts of other materials commonly used and well known in the adhesive art. These materials include, for example, primary and secondary antioxidants, stabilizers, slip additives, antiblock additives such as silica or talc, dyes, pigments and tackifying resins such as those described in the Kirk Othmer Encyclopedia of Chemical Technology, so long as the addition of these additives does not significantly adversely affect the adhesive qualities of the composition.
- the adhesive compositions of the present invention can be dry blended and subsequently melt blended in a twin screw extruder and repelletized as is well known in the art. Subsequently, these melt blended resins can be converted and applied by a variety of techniques and processes.
- the adhesive can be converted into a film by cast or blown film die extrusion techniques and this adhesive film can be laminated to appropriate substrates such as metals or polyolefms.
- the adhesive composition can be coextruded with other polyolefms as a skin layer on either one or both surfaces of the polyolefin to produce a more economical adhesive film.
- a coextruded film can be created incorporating polar barrier resins such as polyamides, ethylene vinyl alcohol copolymer (EVOH) or polyester using the adhesive compositions of the present invention to bond directly to the polar barrier material.
- polar barrier resins such as polyamides, ethylene vinyl alcohol copolymer (EVOH) or polyester
- EVOH ethylene vinyl alcohol copolymer
- These adhesive films can be laminated to various substrates by heat activating the adhesive film. Heat activation can be done by a variety of methods including, but not limited to, direct contact with a heated plate or roller, absorption of infrared energy, direct heating in an oven or activation through RF frequency or microwave radiation.
- the adhesive in another application for the adhesive compositions of the present invention, can be directly coated onto a substrate in processes well known in the art, including, for example, extrusion lamination, extrusion coating, coextrusion lamination and coextrusion coating.
- the adhesive composition of the present invention can be used to bond to polar barrier resins, such as EVOH, polyamide or polyester. It can also be used to bond to metals, such as steel, aluminum, copper and brass, and to polyolefms such as polyethylene, ethylene copolymers and polypropylene.
- a resin composition made from starting materials that comprise the following components:
- an adhesive composition that comprises the following components:
- ethylene vinyl acetate copolymer preferably having 3 to 40 wt% of vinyl acetate, and more preferably, 5 to 30 wt% of vinyl acetate (an example of a suitable commercially available ethylene vinyl acetate copolymer is sold under the name Elvax® by DuPont);
- polyisobutylene may be used instead of the ethylene-propylene diene elastomer compound.
- polystyrenic styrene-butadiene elastomer having different butadiene contents may be used with similar effects.
- Each component of the adhesive compositions of the present invention preferably provides certain attributes to the final adhesive.
- the low melting point polyolefin such as polyethylene or ethylene vinyl acetate copolymer, enhances the low activation temperature property of the adhesive.
- the grafted polymer mainly contributes to the superior bonding of the adhesive composition to metal substrates.
- the elastomer component enhances its resistance to debonding and increases toughness of the final adhesive compositions.
- the polystyrenic component provides the superior cohesive failure properties, as well as, surprisingly, higher bonding properties.
- the preferred adhesive compositions of the present invention can have melt flow rates between 0.1 to 100 dg/min, more preferably from 0.5 to 50 dg/min and most preferably from 0.8 to 25 dg/min., as measured by ASTM-1238E.
- the peak melting point, as measured by DSC, can be between 55 °C- 140 °C depending on the composition.
- the preferred adhesives of the present invention are useful in the manufacture of aluminum and steel building panels.
- the following examples show the surprising advantages of using a polystyrenic such as high impact polystyrene (HIPS) in providing additional peel strength, cohesive mode of failure and a non-tacky adhesive film.
- HIPS high impact polystyrene
- Table 1 shows the compositions 1A, IB and 1C at 0 wt%, 10 wt% and 20 wt% High Impact Polystyrene ("HIPS”) respectively. These compositions were dry-blended initially and fed to a small co-rotating twin-screw extruder. The melt-compounded materials were pelletized and then blown into film with an average thickness of about 75 microns. The films were subsequently used as adhesive layers to make a 5 layer composite structure as shown in Figures la and lb. The aluminium was aludyne treated and had a thickness of 0.38 mm. The polyethylene core used was low-density polyethylene (LDPE) sheet, 2 mm thick.
- LDPE low-density polyethylene
- the composite structure was then tested to measure the peel strength (ASTM 1876) using an InstronTM machine. The following conditions were used during the peel strength test:
- compositions 2 A, 2B and 2C are co-extruded with a linear low density polyethylene (LLDPE) producing
- LLDPE- Adhesive (each layer being 25 micron thick). The results are summarized in Table 2.
- the co-extruded films generally result in lower peel strength as can be seen comparing IC vs. 2A (29.8 vs. 16.5 kgf725mm, respectively) but they are still functional.
- the addition of high impact polystyrene at 30wt% level (2C) appears to lower the peel strength. This latter composition is still functional though not optimal.
- HDPE High-density polyethylene
- EPDM Ethylene/propylene/norbornadiene copolymers
- compositions were made using metallocene linear low-density polyethylene as the base resin.
- Table 3 summarises the compositions.
- Samples 3A, 3B and 3C were prepared as those described in Examples 1 and 2.
- the last two compositions 3D and 3E were prepared in a 2-step process, in order to more closely simulate an actual commercial production.
- Adhesives of 3D and 3E were initially laminated to aluminium at a temperature of 149 °C, using a pressure of 8.5 kgf/cm 2 for 30 seconds. These pre-laminated aluminium sheets were then pressed with a preheated LDPE core at 132°C, using a pressure of 8.5 kgf/cm 2 for 10 seconds.
- composition 3D is a repeat of 3C and is used to compare the performance between the different lamination and testing methods. Sample 3D represents much lower peel strength than 3C due to 180° peel test vs. a 90° peel for sample 3C.
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US10/070,395 US6855432B1 (en) | 1999-09-03 | 2000-09-01 | Low activation temperature adhesive composition with high peel strength and cohesive failure |
CA002383728A CA2383728A1 (en) | 1999-09-03 | 2000-09-01 | Low activation temperature adhesive composition with high peel strength and cohesive failure |
HK03103185A HK1050911A1 (en) | 1999-09-03 | 2003-05-05 | Low activation temperature adhesive composition with high peel strenght and cohesive failure |
US10/976,381 US7381770B1 (en) | 1999-09-03 | 2004-10-29 | Low activation temperature adhesive composition with high peel strength and cohesive failure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US15253999P | 1999-09-03 | 1999-09-03 | |
US60/152,539 | 1999-09-03 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US10070395 A-371-Of-International | 2000-09-01 | ||
US10/976,381 Continuation-In-Part US7381770B1 (en) | 1999-09-03 | 2004-10-29 | Low activation temperature adhesive composition with high peel strength and cohesive failure |
Publications (1)
Publication Number | Publication Date |
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WO2001018141A1 true WO2001018141A1 (en) | 2001-03-15 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/CA2000/001017 WO2001018141A1 (en) | 1999-09-03 | 2000-09-01 | Low activation temperature adhesive composition with high peel strength and cohesive failure |
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KR (1) | KR100743355B1 (en) |
CN (1) | CN100354385C (en) |
CA (1) | CA2383728A1 (en) |
HK (1) | HK1050911A1 (en) |
WO (1) | WO2001018141A1 (en) |
Cited By (11)
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WO2001085837A2 (en) * | 2000-05-11 | 2001-11-15 | Exxonmobil Chemical Patents Inc. | Isobutylene-based elastomer blends |
US6875813B2 (en) | 1999-05-19 | 2005-04-05 | Exxonmobil Chemical Patents Inc. | Isobutylene-based elastomer blends |
WO2006015201A2 (en) * | 2004-07-29 | 2006-02-09 | E.I. Dupont De Nemours And Company | Adhesive compositions derived from functionalized ethylene copolymers |
EP1716202A1 (en) * | 2004-01-09 | 2006-11-02 | E.I.Du pont de nemours and company | Polypropylene modification for improved adhesion of polypropylene-based multilayer packaging film structure to vacuum deposited aluminum |
EP1808470A1 (en) * | 2006-01-16 | 2007-07-18 | Arkema France | Tie based on grafted polyethylene and on high-impact or crystal polystyrene with cohesive failure |
US7879949B2 (en) | 2004-10-06 | 2011-02-01 | E.I. Du Pont De Nemours And Company | Blends of ethylene copolymers with high-frequency weldability |
US7935765B2 (en) | 2002-05-23 | 2011-05-03 | E. I. Du Pont De Nemours And Company | Miscible blends of ethylene copolymers with improved temperature resistance |
CN102128317A (en) * | 2011-03-15 | 2011-07-20 | 广东联塑科技实业有限公司 | PE-RT wiremesh framework composite pipe and preparation method and application thereof |
CN106905892A (en) * | 2016-09-23 | 2017-06-30 | 厦门内加湖新材料科技有限公司 | A kind of adhesive based on non-polar, polyolefin resin |
CN111154427A (en) * | 2019-12-30 | 2020-05-15 | 河源市普立隆新材料科技有限公司 | Aluminum ceiling glue film structure and aluminum ceiling structure thereof |
CN114231211A (en) * | 2021-12-30 | 2022-03-25 | 上海邦中高分子材料股份有限公司 | Special adhesive resin for plastic-lined composite pipe by taking liquid medicine soaking as pretreatment mode of steel pipe and preparation method thereof |
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JP6229208B2 (en) * | 2013-11-05 | 2017-11-15 | 三菱ケミカル株式会社 | Adhesive composition |
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- 2000-09-01 CN CNB008141495A patent/CN100354385C/en not_active Expired - Lifetime
- 2000-09-01 CA CA002383728A patent/CA2383728A1/en not_active Abandoned
- 2000-09-01 KR KR1020027002888A patent/KR100743355B1/en active IP Right Grant
- 2000-09-01 WO PCT/CA2000/001017 patent/WO2001018141A1/en active Application Filing
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2003
- 2003-05-05 HK HK03103185A patent/HK1050911A1/en not_active IP Right Cessation
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Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6875813B2 (en) | 1999-05-19 | 2005-04-05 | Exxonmobil Chemical Patents Inc. | Isobutylene-based elastomer blends |
WO2001085837A3 (en) * | 2000-05-11 | 2003-09-04 | Exxonmobil Chem Patents Inc | Isobutylene-based elastomer blends |
WO2001085837A2 (en) * | 2000-05-11 | 2001-11-15 | Exxonmobil Chemical Patents Inc. | Isobutylene-based elastomer blends |
US8062757B2 (en) | 2002-05-23 | 2011-11-22 | E.I. Du Pont De Nemours And Company | Toughened thermoplastic polyamide compositions |
US8057910B2 (en) | 2002-05-23 | 2011-11-15 | E. I. Du Pont De Nemours And Company | Toughened thermoplastic polyamide compositions |
US7935765B2 (en) | 2002-05-23 | 2011-05-03 | E. I. Du Pont De Nemours And Company | Miscible blends of ethylene copolymers with improved temperature resistance |
EP1716202A4 (en) * | 2004-01-09 | 2008-01-23 | Du Pont | Polypropylene modification for improved adhesion of polypropylene-based multilayer packaging film structure to vacuum deposited aluminum |
EP1716202A1 (en) * | 2004-01-09 | 2006-11-02 | E.I.Du pont de nemours and company | Polypropylene modification for improved adhesion of polypropylene-based multilayer packaging film structure to vacuum deposited aluminum |
WO2006015201A3 (en) * | 2004-07-29 | 2006-04-27 | Du Pont | Adhesive compositions derived from functionalized ethylene copolymers |
US7767311B2 (en) | 2004-07-29 | 2010-08-03 | E.I. Du Pont De Nemours And Company | Adhesive compositions derived from highly functionalized ethylene copolymers |
WO2006015201A2 (en) * | 2004-07-29 | 2006-02-09 | E.I. Dupont De Nemours And Company | Adhesive compositions derived from functionalized ethylene copolymers |
US7879949B2 (en) | 2004-10-06 | 2011-02-01 | E.I. Du Pont De Nemours And Company | Blends of ethylene copolymers with high-frequency weldability |
FR2896249A1 (en) * | 2006-01-16 | 2007-07-20 | Arkema Sa | BINDER BASED ON POLYETHYLENE GRAFT AND POLYSTYRENE SHOCK OR CRYSTAL WITH COHESIVE RUPTURE |
EP1808470A1 (en) * | 2006-01-16 | 2007-07-18 | Arkema France | Tie based on grafted polyethylene and on high-impact or crystal polystyrene with cohesive failure |
CN102128317A (en) * | 2011-03-15 | 2011-07-20 | 广东联塑科技实业有限公司 | PE-RT wiremesh framework composite pipe and preparation method and application thereof |
CN106905892A (en) * | 2016-09-23 | 2017-06-30 | 厦门内加湖新材料科技有限公司 | A kind of adhesive based on non-polar, polyolefin resin |
CN106905892B (en) * | 2016-09-23 | 2021-05-28 | 厦门内加湖新材料科技有限公司 | Adhesive based on nonpolar polyolefin resin |
CN111154427A (en) * | 2019-12-30 | 2020-05-15 | 河源市普立隆新材料科技有限公司 | Aluminum ceiling glue film structure and aluminum ceiling structure thereof |
CN114231211A (en) * | 2021-12-30 | 2022-03-25 | 上海邦中高分子材料股份有限公司 | Special adhesive resin for plastic-lined composite pipe by taking liquid medicine soaking as pretreatment mode of steel pipe and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
KR20020034183A (en) | 2002-05-08 |
KR100743355B1 (en) | 2007-07-26 |
CA2383728A1 (en) | 2001-03-15 |
CN100354385C (en) | 2007-12-12 |
HK1050911A1 (en) | 2003-07-11 |
CN1378579A (en) | 2002-11-06 |
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