CA2081105A1 - Method of improving the oxidative thermal stability of ethylene polymers - Google Patents
Method of improving the oxidative thermal stability of ethylene polymersInfo
- Publication number
- CA2081105A1 CA2081105A1 CA002081105A CA2081105A CA2081105A1 CA 2081105 A1 CA2081105 A1 CA 2081105A1 CA 002081105 A CA002081105 A CA 002081105A CA 2081105 A CA2081105 A CA 2081105A CA 2081105 A1 CA2081105 A1 CA 2081105A1
- Authority
- CA
- Canada
- Prior art keywords
- improving
- thermal stability
- ethylene polymers
- oxidative
- polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/001—Removal of residual monomers by physical means
- C08F6/005—Removal of residual monomers by physical means from solid polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
- B29C48/762—Vapour stripping
Abstract
A method of improving the oxidative thermal stability of ethylene polymers is disclosed. The method comprises removing residual unreacted monomer(s), solvent and thermally unstable species from the polymer using a stripping agent and subsequent devolatilization. The resulting polymer is characterized by having an oxidative exotherm of not more than 50 percent of the original polymer, as measured by differential scanning calorimetry, as well as improved taste and odor properties.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66399591A | 1991-03-04 | 1991-03-04 | |
US663,995 | 1991-03-04 | ||
PCT/US1992/001720 WO1992015621A1 (en) | 1991-03-04 | 1992-03-04 | Method of improving the oxidative thermal stability of ethylene polymers |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2081105A1 true CA2081105A1 (en) | 1992-09-05 |
CA2081105C CA2081105C (en) | 2004-10-05 |
Family
ID=24664075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002081105A Expired - Lifetime CA2081105C (en) | 1991-03-04 | 1992-03-04 | Method of improving the oxidative thermal stability of ethylene polymers |
Country Status (9)
Country | Link |
---|---|
US (1) | US5756659A (en) |
EP (1) | EP0527225B1 (en) |
JP (1) | JP3174915B2 (en) |
CA (1) | CA2081105C (en) |
DE (1) | DE69224242T2 (en) |
ES (1) | ES2111635T3 (en) |
FI (1) | FI924965A0 (en) |
TW (1) | TW246679B (en) |
WO (1) | WO1992015621A1 (en) |
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KR0169505B1 (en) * | 1992-09-11 | 1999-01-15 | 오오쓰끼 아끼히꼬 | Drug packing polyolefinic material, process for producing the same and container for drug packing |
US5442041A (en) * | 1995-01-19 | 1995-08-15 | Arco Chemical Technology, L.P. | Removal of volatile substances from thermoplastic resins |
US5521275A (en) * | 1995-09-05 | 1996-05-28 | General Electric Company | Method for improving catalyst efficiency during polycarbonate redistribution |
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US6160060A (en) * | 1998-08-04 | 2000-12-12 | Eastman Chemical Company | Process for the synthesis of high molecular weight predominantly amorphous polymers with improved color and adhesive properties |
US6022946A (en) * | 1998-12-23 | 2000-02-08 | Union Carbide Chemicals & Plastics Technology Corporation | Process for deactivation of polyolefin compositions utilizing carbon dioxide as a deactivation agent |
DE60015672T2 (en) * | 1999-08-27 | 2005-12-01 | Rohm And Haas Co. | Process for stripping polymer dispersions or polymer solutions |
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WO2006023464A2 (en) * | 2004-08-17 | 2006-03-02 | Flint Group Incorporated | Processes for preparing organic pigment dispersions and ink |
US8287949B2 (en) | 2005-07-07 | 2012-10-16 | Dow Global Technologies Inc. | Aqueous dispersions |
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US7528080B2 (en) * | 2005-12-15 | 2009-05-05 | Dow Global Technologies, Inc. | Aqueous polyolefin dispersions for textile impregnation |
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CN105492028B (en) | 2013-08-29 | 2018-12-25 | 陶氏环球技术有限责任公司 | The method for producing aqueous liquid dispersion, the aqueous liquid dispersion thus produced and the coated composition comprising aqueous liquid dispersion |
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BR112017002223A2 (en) | 2014-08-15 | 2018-01-16 | Dow Global Technologies Llc | dispersion of ethylcellulose and powder |
JP2017530224A (en) | 2014-09-30 | 2017-10-12 | ダウ グローバル テクノロジーズ エルエルシー | Aqueous ethylcellulose dispersion using polymer additives |
KR101568798B1 (en) * | 2015-01-15 | 2015-11-12 | 주식회사 티알켐텍 | Scraper for horizontal joint repair |
JP2018514596A (en) | 2015-03-18 | 2018-06-07 | ダウ グローバル テクノロジーズ エルエルシー | Method for making an elastomeric polyolefin skin |
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DE3822069A1 (en) * | 1988-06-30 | 1990-01-18 | Basf Ag | METHOD FOR IONIC CROSSLINKING OF AN ETHYLENE COPOLYMERISATE, IONICALLY CROSSLINKED ETHYLENE COPOLYMERISATE AND THE USE THEREOF AS A ADHESIVE, INJECTION MOLDING ARTICLE OR COATING FILM |
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DE3840293A1 (en) * | 1988-11-30 | 1990-05-31 | Werner & Pfleiderer | METHOD FOR REMOVING IMPURITIES FROM POLYMERIC PLASTICS, AND DEVICE FOR CARRYING OUT THE METHOD |
-
1992
- 1992-03-04 JP JP50785592A patent/JP3174915B2/en not_active Expired - Lifetime
- 1992-03-04 ES ES92908695T patent/ES2111635T3/en not_active Expired - Lifetime
- 1992-03-04 WO PCT/US1992/001720 patent/WO1992015621A1/en not_active Application Discontinuation
- 1992-03-04 EP EP92908695A patent/EP0527225B1/en not_active Revoked
- 1992-03-04 DE DE69224242T patent/DE69224242T2/en not_active Revoked
- 1992-03-04 CA CA002081105A patent/CA2081105C/en not_active Expired - Lifetime
- 1992-03-12 TW TW081101891A patent/TW246679B/zh not_active IP Right Cessation
- 1992-11-03 FI FI924965A patent/FI924965A0/en unknown
-
1994
- 1994-10-21 US US08/326,981 patent/US5756659A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP3174915B2 (en) | 2001-06-11 |
US5756659A (en) | 1998-05-26 |
FI924965A (en) | 1992-11-03 |
DE69224242D1 (en) | 1998-03-05 |
DE69224242T2 (en) | 1998-05-14 |
FI924965A0 (en) | 1992-11-03 |
WO1992015621A1 (en) | 1992-09-17 |
CA2081105C (en) | 2004-10-05 |
EP0527225A1 (en) | 1993-02-17 |
EP0527225B1 (en) | 1998-01-28 |
JPH05506692A (en) | 1993-09-30 |
TW246679B (en) | 1995-05-01 |
ES2111635T3 (en) | 1998-03-16 |
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Legal Events
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EEER | Examination request | ||
MKEX | Expiry |