GB835651A - Stable vinyl acetate-acrylamide copolymer emulsions and water-resistant films therefrom - Google Patents

Stable vinyl acetate-acrylamide copolymer emulsions and water-resistant films therefrom

Info

Publication number
GB835651A
GB835651A GB7344/58A GB734458A GB835651A GB 835651 A GB835651 A GB 835651A GB 7344/58 A GB7344/58 A GB 7344/58A GB 734458 A GB734458 A GB 734458A GB 835651 A GB835651 A GB 835651A
Authority
GB
United Kingdom
Prior art keywords
vinyl acetate
weight
polymerization
water
emulsions
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.)
Expired
Application number
GB7344/58A
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.)
Shawinigan Chemicals Ltd
Original Assignee
Shawinigan Chemicals 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 Shawinigan Chemicals Ltd filed Critical Shawinigan Chemicals Ltd
Publication of GB835651A publication Critical patent/GB835651A/en
Expired legal-status Critical Current

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
    • C08F218/00—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 acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
    • C08F218/02—Esters of monocarboxylic acids
    • C08F218/04—Vinyl esters
    • C08F218/08—Vinyl acetate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Stable aqueous copolymer emulsions are made by dissolving acrylamide in an aqueous medium with a water-soluble inorganic peroxy polymerization catalyst, dissolving vinyl acetate in the aqueous medium and heating to copolymerize the monomers and form a stable emulsion of the copolymer, the proportion of acrylamide being in the range of from 3.5 to 10% by weight of the vinyl acetate and the sum of the monomers being between 30 and 60% of the total emulsion by weight. A third monomer, e.g. crotonic acid, may be present in an amount of between 3 and 10% by weight of the vinyl acetate. Catalysts specified are hydrogen peroxide and potassium persulphate, which latter may be used alone or in combination with sodium bisulphite or silver nitrate. The whole quantity of catalyst and vinyl acetate may be added to the reaction mixture at the start of polymerization, but preferably a portion is present initially and the remainder is added as the reaction proceeds. The polymerization medium may be emulsifier-free or contain an emulsifier such as stearamidopropyl - dimethyl - beta - hydroxyethyl ammonium dihydrogen phosphate or a sodium alkyl aryl sulphonate. The emulsions are used in the preparation of films which when dried at a temperature of 80-110 DEG C. are waterresistant. The terpolymers derived from crotonic acid are soluble in dilute alkali.
GB7344/58A 1957-03-15 1958-03-07 Stable vinyl acetate-acrylamide copolymer emulsions and water-resistant films therefrom Expired GB835651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US835651XA 1957-03-15 1957-03-15

Publications (1)

Publication Number Publication Date
GB835651A true GB835651A (en) 1960-05-25

Family

ID=22179161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7344/58A Expired GB835651A (en) 1957-03-15 1958-03-07 Stable vinyl acetate-acrylamide copolymer emulsions and water-resistant films therefrom

Country Status (1)

Country Link
GB (1) GB835651A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998039371A1 (en) * 1997-03-06 1998-09-11 Wacker-Chemie Gmbh Method for producing protective colloid-free dispersions and dispersion powders
US8975309B2 (en) 2008-09-15 2015-03-10 Maria Stromme Vinyl alcohol co-polymer cryogels, vinyl alcohol co-polymers, and methods and products thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998039371A1 (en) * 1997-03-06 1998-09-11 Wacker-Chemie Gmbh Method for producing protective colloid-free dispersions and dispersion powders
US8975309B2 (en) 2008-09-15 2015-03-10 Maria Stromme Vinyl alcohol co-polymer cryogels, vinyl alcohol co-polymers, and methods and products thereof

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