GB894855A - Process for the manufacture of polyvinyl acetal dispersions - Google Patents

Process for the manufacture of polyvinyl acetal dispersions

Info

Publication number
GB894855A
GB894855A GB7041/59A GB704159A GB894855A GB 894855 A GB894855 A GB 894855A GB 7041/59 A GB7041/59 A GB 7041/59A GB 704159 A GB704159 A GB 704159A GB 894855 A GB894855 A GB 894855A
Authority
GB
United Kingdom
Prior art keywords
acetal
water
polyvinyl acetal
carbon atoms
dispersing
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
GB7041/59A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB894855A publication Critical patent/GB894855A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/05—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2329/00—Characterised by the use of homopolymers or 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 alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2329/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Stable polyvinyl acetal dispersions are obtained by heating a minture of a polyvinyl acetal, water, an anion-active emulsifier and one or more auxiliary dispersing compounds to form a viscous and kneasable mass, and incorporating water into the mass by kneading and cooling until inversion to a resin-in-water type dispersion occurs. The dispersing compounds may be (a) esters of an aliphatic monocarboxylic acid having 1 to 6 carbon atoms with an aliphatic monohydric alcohol having 1 to 6 carbon atoms, (b) an aliphatic acetal which is sparingly soluble in water, or (c) a halogen derivative of an acyclic hydrocarbon having 1-6 carbon atoms that is sparingly soluble in water. The dispersing compound is preferably carbon tetrachloride, chloroform, trichloroethylene or perchlorethylene and may be added in an amount of 5-25% based on the weight of polyvinyl acetal. The anion-active emulsifier may be an alkali-metal salt of a long chain fatty acid and may be added in an amount of 4 to 6%. In examples, the following substances are used as dispersing compounds: (1) butyl acetate, (2) isoamyl acetate, (3) perchloroethylene, (4) di-n-propyl acetal, (5) carbon tetrachloride, (6) trichloroethylene, (7) dibutyl acetal, (8) dipropyl formal, (9) dipropyl propional and (10) isoamyl acetal.
GB7041/59A 1958-04-05 1959-02-27 Process for the manufacture of polyvinyl acetal dispersions Expired GB894855A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE894855X 1958-04-05

Publications (1)

Publication Number Publication Date
GB894855A true GB894855A (en) 1962-04-26

Family

ID=6847405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7041/59A Expired GB894855A (en) 1958-04-05 1959-02-27 Process for the manufacture of polyvinyl acetal dispersions

Country Status (1)

Country Link
GB (1) GB894855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159521A (en) * 1984-05-31 1985-12-04 Shinto Paint Co Ltd Method for producing water-dispersible compositions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159521A (en) * 1984-05-31 1985-12-04 Shinto Paint Co Ltd Method for producing water-dispersible compositions

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