CA2458749A1 - Cationic starch graft copolymers and novel process for the preparation of cationic starch graft copolymers - Google Patents

Cationic starch graft copolymers and novel process for the preparation of cationic starch graft copolymers Download PDF

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Publication number
CA2458749A1
CA2458749A1 CA002458749A CA2458749A CA2458749A1 CA 2458749 A1 CA2458749 A1 CA 2458749A1 CA 002458749 A CA002458749 A CA 002458749A CA 2458749 A CA2458749 A CA 2458749A CA 2458749 A1 CA2458749 A1 CA 2458749A1
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CA
Canada
Prior art keywords
weight
cationic starch
starch graft
graft polymer
cationic
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
Application number
CA002458749A
Other languages
French (fr)
Other versions
CA2458749C (en
Inventor
Bernd Hauschel
Bernd Thiele
Thomas Huebbe
Bernhard Jansen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kemira Oyj
Original Assignee
Bayer Chemicals AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer Chemicals AG filed Critical Bayer Chemicals AG
Publication of CA2458749A1 publication Critical patent/CA2458749A1/en
Application granted granted Critical
Publication of CA2458749C publication Critical patent/CA2458749C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents
    • 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
    • C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D21H17/375—Poly(meth)acrylamide

Abstract

Cationic starch graft copolymer composed of the monomers a) to d) a) 20 - 80% by weight of acrylamide, methacrylamide or mixtures thereof, b) 3 - 20% by weight of at least one basic or cationic vinyl monomer, c) 0.005 - 1.5% by weight of at least one bifunctional or higher-functional crosslinking agent, d) 0 - 10% by weight of at least one nonionic or anionic vinyl monomer which differs from the monomers mentioned under a) to c) and a grafting base e) e) 15 - 70% by weight of at least one starch or one starch derivative, the sum of a) to e) being 100% by weight.

Claims (11)

1. Cationic starch graft polymer composed of the monomers a) to d) a) 20 - 80% by weight of acrylamide, methacrylamide or mixtures thereof, b) 3 - 20% by weight of at least one basic or cationic vinyl monomer, c) 0.005 - 1.5% by weight of at least one bifunctional or higher-functional crosslinking agent, d) 0 - 10% by weight of at least one nonionic or anionic vinyl monomer which differs from the monomers mentioned under a) to c) and a grafting base e) e) 15 - 70% by weight of at least one starch or one starch derivative, the sum of a) to e) being 100% by weight.
2. Cationic starch graft polymer according to Claim 1, characterized in that acrylamide is used as component a).
3. Cationic starch graft polymer according to Claim 1, characterized in that a vinyl compound which has a double bond capable of free radical polymerization and which contains either a permanently cationic charge or a basic group which is present in completely or partly protonated form under weakly acidic conditions is used as component b).
4. Cationic starch graft polymer according to Claim 1, characterized in that a water-soluble (i.e. > 3 g/l at 23°C) divinyl compound is used as monomer c).
5. Cationic starch graft polymer according to Claim 1, characterized in that starch whose molecular weight has been reduced by partial degradation and/or which is derivatized is used as grafting base e).
6. Process for the preparation of the cationic starch graft polymer according to Claim 1, characterized in that the components a) to e) are subjected to free radical polymerization in water in the presence of free radical initiators.
7. Process for the preparation of a cationic starch graft polymer, characterized in that the monomers a) to d) a) 20 - 80% by weight of acrylamide, methacrylamide or mixtures thereof b) 3 - 20% by weight of at least one basic or cationic vinyl monomer c) 0 - 1.5% by weight of at least one bifunctional or higher-functional crosslinking agent d) 0 - 10% by weight of at least one nonionic or anionic vinyl monomer which differs from the monomers mentioned under a) to c) are subjected to free radical polymerization in the presence of e) 15 - 70% by weight of at least one starch or one starch derivative, characterized in that, in a first step, the component e), as the grafting base, is subjected to free radical polymerization in water with at least 30% by weight of the total amount of the component b) and then, in a second step, the other components a), c), d) and the remaining amount of b) are subjected to free radical polymerization in the presence of the reaction mixture formed in the first step, and the sum of a) to e) is 100% by weight.
8. Cationic starch graft polymer obtainable by the process according to Claim 7.
9. Use of a cationic starch graft polymer according to Claim 1 or 8 as a dry strength agent for paper.
10. Method for imparting dry strength to paper, characterized in that compounds according to Claim 1 and/or 8 are added to the paper stock suspensions prior to sheet formation or are applied to the surface of the paper web.
11. Paper treated with a dry strength agent according to Claim 1 and/or 8.
CA002458749A 2003-02-28 2004-02-25 Cationic starch graft copolymers and novel process for the preparation of cationic starch graft copolymers Expired - Fee Related CA2458749C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10308753A DE10308753A1 (en) 2003-02-28 2003-02-28 Cationic starch graft copolymers and new process for the production of cationic starch graft copolymers
DE10308753.2 2003-02-28

Publications (2)

Publication Number Publication Date
CA2458749A1 true CA2458749A1 (en) 2004-08-28
CA2458749C CA2458749C (en) 2009-12-22

Family

ID=32748108

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002458749A Expired - Fee Related CA2458749C (en) 2003-02-28 2004-02-25 Cationic starch graft copolymers and novel process for the preparation of cationic starch graft copolymers

Country Status (5)

Country Link
US (3) US7786238B2 (en)
EP (2) EP2258735B1 (en)
CA (1) CA2458749C (en)
DE (1) DE10308753A1 (en)
ES (1) ES2483515T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110950999A (en) * 2019-12-17 2020-04-03 江门市高力依科技实业有限公司 Bobbin paper dry strength agent and preparation method thereof

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US7351770B2 (en) * 2004-09-30 2008-04-01 Lifescan, Inc. Ionic hydrophilic high molecular weight redox polymers for use in enzymatic electrochemical-based sensors
US9109068B2 (en) 2005-07-21 2015-08-18 Akzo Nobel N.V. Hybrid copolymer compositions
US8674021B2 (en) 2006-07-21 2014-03-18 Akzo Nobel N.V. Sulfonated graft copolymers
US20080020961A1 (en) 2006-07-21 2008-01-24 Rodrigues Klin A Low Molecular Weight Graft Copolymers
EP2368924A1 (en) 2010-03-22 2011-09-28 Kemira Germany GmbH Composition for improving dry strength
FI125713B (en) 2010-10-01 2016-01-15 Upm Kymmene Corp A method for improving the runnability of a wet paper web and paper
BR112014008874A2 (en) * 2011-11-04 2017-04-25 Akzo Nobel Chemicals Int Bv dendrite hybrid copolymer composition
US9051406B2 (en) 2011-11-04 2015-06-09 Akzo Nobel Chemicals International B.V. Graft dendrite copolymers, and methods for producing the same
BR112015021081A2 (en) 2013-03-13 2020-01-28 Akzo Nobel Chemicals Int Bv polysaccharide alkali swellable rheology modifier; method of making polysaccharide alkaline swellable rheology modifier; and use of rheology modifier
CN103421147B (en) * 2013-07-09 2016-08-31 上海东升新材料有限公司 The preparation method of graft-polymer both sexes drying strengthening agent
CN103408700A (en) * 2013-07-09 2013-11-27 上海东升新材料有限公司 Preparation method of amphoteric dry strength agent
LT6229B (en) 2014-03-10 2015-10-26 Kauno technologijos universitetas Modified starch flocculant and method of producing thereof
CN103924480B (en) * 2014-04-04 2017-11-21 山东奥尼生物科技股份有限公司 The formula and preparation method of feature paper grade (stock) reinforcing agent
CN104497152A (en) * 2014-11-24 2015-04-08 广东中轻枫泰生化科技有限公司 Preparation method of cationic starch with high substituted degree
CN109594413A (en) * 2018-11-26 2019-04-09 苏州恒康新材料有限公司 It is a kind of for improving the paper making additive of paper tensile strength
CN113105587B (en) * 2021-03-12 2022-12-06 深圳市瑞成科讯实业有限公司 Papermaking reinforcing agent and preparation method thereof
CN115197369A (en) * 2022-08-24 2022-10-18 上海昶法新材料有限公司 Preparation method of graft copolymerization cationic starch

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Publication number Priority date Publication date Assignee Title
CN110950999A (en) * 2019-12-17 2020-04-03 江门市高力依科技实业有限公司 Bobbin paper dry strength agent and preparation method thereof

Also Published As

Publication number Publication date
US20100137514A1 (en) 2010-06-03
EP2258735B1 (en) 2014-05-07
US20110139388A1 (en) 2011-06-16
US8278374B2 (en) 2012-10-02
EP1452552A3 (en) 2005-06-15
US7915340B2 (en) 2011-03-29
DE10308753A1 (en) 2004-09-09
EP1452552A2 (en) 2004-09-01
US20040170596A1 (en) 2004-09-02
CA2458749C (en) 2009-12-22
US7786238B2 (en) 2010-08-31
EP2258735A1 (en) 2010-12-08
ES2483515T3 (en) 2014-08-06

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