IN2014MN02324A - - Google Patents

Info

Publication number
IN2014MN02324A
IN2014MN02324A IN2324MUN2014A IN2014MN02324A IN 2014MN02324 A IN2014MN02324 A IN 2014MN02324A IN 2324MUN2014 A IN2324MUN2014 A IN 2324MUN2014A IN 2014MN02324 A IN2014MN02324 A IN 2014MN02324A
Authority
IN
India
Prior art keywords
residual monomer
monomer
aqueous solution
initiator
vinyl butyrolactam
Prior art date
Application number
Inventor
Yu Wang
Yang Zeng
Meiling Wu
Original Assignee
Shanghai Yuking Chemtech Co Ltd
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 Shanghai Yuking Chemtech Co Ltd filed Critical Shanghai Yuking Chemtech Co Ltd
Publication of IN2014MN02324A publication Critical patent/IN2014MN02324A/en

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
    • C08F4/00—Polymerisation catalysts
    • C08F4/28—Oxygen or compounds releasing free oxygen
    • C08F4/32—Organic compounds
    • C08F4/38—Mixtures of peroxy-compounds
    • 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
    • C08F126/00—Homopolymers 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 a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
    • C08F126/06—Homopolymers 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 a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen
    • C08F126/10—N-Vinyl-pyrrolidone
    • 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
    • C08F6/003—Removal of residual monomers by physical means from polymer solutions, suspensions, dispersions or emulsions without recovery of the polymer therefrom

Abstract

Disclosed is a method for synthesizing an aqueous solution of homopolymer N vinyl butyrolactam (K60) with low residual monomer and a middle high molecular weight using 20 50% weight of an aqueous solution of N vinyl butyrolactam monomer as a raw material in the presence of an inert gas at a polymerization temperature of 57°C 72°C carrying out a reaction under stirring for 4 6 h during which the temperature is increased in stages and an initiator is added in decreasing amounts the initiator being azobisisoheptonitrile the total amount of the initiator added being 0.01~2% of the mass of the N vinyl butyrolactam monomer; after the K value of the system reaches 58~65 adding sulphuric acid to adjust the pH to be at 4.2 4.5 maintaining the temperature at 90 140°C and stirring for more than 4 hours to remove the residual monomer so as to obtain 20 50% weight of a colourless and transparent aqueous solution of homopolymer N vinyl butyrolactam (K60) with low residual monomer and a middle high molecular weight and having residual monomer below 10 ppm and the K value of 58 65.
IN2324MUN2014 2012-05-16 2012-07-23 IN2014MN02324A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201210153253 CN102633924B (en) 2012-05-16 2012-05-16 Synthesis method for low-residual monomer and medium-high molecular weight monopoly(N-vinylbutyrolactam) K60 aqueous solution
PCT/CN2012/079065 WO2013170536A1 (en) 2012-05-16 2012-07-23 Method for synthesizing aqueous solution of homopolymer n-vinyl butyrolactam (k60) with low residual monomer and middle-high molecular weight

Publications (1)

Publication Number Publication Date
IN2014MN02324A true IN2014MN02324A (en) 2015-10-09

Family

ID=46618510

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2324MUN2014 IN2014MN02324A (en) 2012-05-16 2012-07-23

Country Status (3)

Country Link
CN (1) CN102633924B (en)
IN (1) IN2014MN02324A (en)
WO (1) WO2013170536A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106674388A (en) * 2015-11-11 2017-05-17 上海其福青材料科技有限公司 Method for reducing N-vinyl pyrrolidone in polyvinylpyrrolidone
CN106674397A (en) * 2015-11-11 2017-05-17 上海其福青材料科技有限公司 Preparation method of high-molecular-weight polyvinyl pyrrolidone
CN109679009A (en) * 2019-01-02 2019-04-26 黄山邦森新材料有限公司 A kind of preparation method of 30 POVIDONE K 30 BP/USP 60

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508752A (en) * 2009-03-14 2009-08-19 博爱新开源制药有限公司 Polymerization method of polyvinyl pyrrolidone
CN102093279B (en) * 2011-01-07 2012-05-23 上海宇昂化工科技发展有限公司 High-stability nonionic N-vinyl butyrate lactam iodine and preparation method thereof
CN102125053B (en) * 2011-01-07 2013-08-07 上海宇昂水性新材料科技股份有限公司 High-stability non-ionic N-vinyl butyrate lactam iodine solution and related preparation method

Also Published As

Publication number Publication date
WO2013170536A1 (en) 2013-11-21
CN102633924B (en) 2013-10-23
CN102633924A (en) 2012-08-15

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