GB994380A - Process for the manufacture of polyvinyl ester dispersions - Google Patents

Process for the manufacture of polyvinyl ester dispersions

Info

Publication number
GB994380A
GB994380A GB14215/62A GB1421562A GB994380A GB 994380 A GB994380 A GB 994380A GB 14215/62 A GB14215/62 A GB 14215/62A GB 1421562 A GB1421562 A GB 1421562A GB 994380 A GB994380 A GB 994380A
Authority
GB
United Kingdom
Prior art keywords
vinyl
acid
esters
polymerization
temperature
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
GB14215/62A
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie 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 Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of GB994380A publication Critical patent/GB994380A/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
    • C08F18/00—Homopolymers and 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
    • C08F18/02—Esters of monocarboxylic acids
    • C08F18/04—Vinyl esters

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

In a process for the free radical emulsion polymerization of vinyl alkanoates in the presence of 0.5 to 5 weight per cent of a protective colloid and with gradual addition of the monomer to the polymerization reaction mixture, the polymerization is carried out in two stages at a reflux temperature above 65 DEG C. and below the boiling-point of the aqueous phase and at a temperature rising to between 85 and 95 DEG C. and between these two stages the reaction mixture is cooled to a temperature not exceeding 65 DEG C. and is maintained at such a temperature for at least 30 minutes. Specified vinyl alkanoates are vinyl acetate, vinyl propionate and vinyl butyrate. These vinyl esters may be copolymerized with higher vinyl esters, acrylic esters, maleic diesters, vinyl sulphonic acid, acrylic acid, crotonic acid, maleic acid or semi-esters thereof with alkanols or polyglycol monoethers. Cross-linking monomers, e.g. divinyl adipate, vinyl acrylate, vinyl crotonate, allyl acrylate, diallyl phthalate, diallyl maleate, ethylene glycol dimethacrylate and triallyl cyanurate, may also be present. Specified protective colloids are polyvinyl alcohol, cellulose ethers and alkylaryl polyglycol ethers. Polymerization may be effected in the presence of hydrogen peroxide, persulphates or t.-butyl hydroperoxide, optionally together with bisulphites, dithionites, sodium formaldehyde hydrosulphite, formic acid, tartaric acid, ascorbic acid or salts of transition metals. In the first step 20 to 80% of the total monomer may be added and completely polymerized, the mixture being cooled to between 45 DEG and 65 DEG C., e.g. 60 DEG C., for one to two hours. In examples vinyl acetate is polymerized in aqueous media in the presence of (1) polyvinyl alcohol, sodium paraffin sulphonate, calcium chloride and hydrogen peroxide together with (2) tartaric acid.
GB14215/62A 1961-04-12 1962-04-12 Process for the manufacture of polyvinyl ester dispersions Expired GB994380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1961W0029799 DE1151663C2 (en) 1961-04-12 1961-04-12 Process for the production of polyvinyl ester dispersions

Publications (1)

Publication Number Publication Date
GB994380A true GB994380A (en) 1965-06-10

Family

ID=7599330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14215/62A Expired GB994380A (en) 1961-04-12 1962-04-12 Process for the manufacture of polyvinyl ester dispersions

Country Status (3)

Country Link
DE (1) DE1151663C2 (en)
FR (1) FR1319701A (en)
GB (1) GB994380A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267090A (en) 1979-01-22 1981-05-12 National Distillers And Chemical Corp. Process for preparing vinyl acetate-ethylene copolymer latices
US4405747A (en) * 1981-04-15 1983-09-20 Hoechst Aktiengesellschaft Aqueous polyvinyl ester dispersion, process for its preparation, and the use

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB779557A (en) * 1954-10-01 1957-07-24 Ici Ltd Manufacture of polymeric materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267090A (en) 1979-01-22 1981-05-12 National Distillers And Chemical Corp. Process for preparing vinyl acetate-ethylene copolymer latices
US4405747A (en) * 1981-04-15 1983-09-20 Hoechst Aktiengesellschaft Aqueous polyvinyl ester dispersion, process for its preparation, and the use

Also Published As

Publication number Publication date
FR1319701A (en) 1963-03-01
DE1151663C2 (en) 1973-10-11
DE1151663B (en) 1963-07-18

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