GB1468793A - Process forthe controlled alcoholysis of ethylene-vinyl ester interpolymers - Google Patents

Process forthe controlled alcoholysis of ethylene-vinyl ester interpolymers

Info

Publication number
GB1468793A
GB1468793A GB4380373A GB4380373A GB1468793A GB 1468793 A GB1468793 A GB 1468793A GB 4380373 A GB4380373 A GB 4380373A GB 4380373 A GB4380373 A GB 4380373A GB 1468793 A GB1468793 A GB 1468793A
Authority
GB
United Kingdom
Prior art keywords
ethylene
product
vinyl ester
alcoholysis
alcohol
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
GB4380373A
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.)
Millennium Petrochemicals Inc
Original Assignee
National Destillers and Chemical Corp
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 National Destillers and Chemical Corp filed Critical National Destillers and Chemical Corp
Priority to GB4380373A priority Critical patent/GB1468793A/en
Publication of GB1468793A publication Critical patent/GB1468793A/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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/12—Hydrolysis
    • 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
    • C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
    • C08F2800/20—Copolymer characterised by the proportions of the comonomers expressed as weight or mass percentages
    • 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
    • C08F2810/00—Chemical modification of a polymer
    • C08F2810/50—Chemical modification of a polymer wherein the polymer is a copolymer and the modification is taking place only on one or more of the monomers present in minority

Landscapes

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

Abstract

1468793 Alcoholysis of ethylene/vinyl ester copolymers; product recovery NATIONAL DISTILLERS & CHEMICAL CORP 18 Feb 1974 43803/73 Heading C3P In the alcoholysis of ethylene/vinyl ester copolymers, especially ethylene/vinyl acetate copolymer, effected in the presence of (1) a C 1-4 monohydric alcohol, e.g. methanol or ethanol, (2) a hydrocarbon solvent,e.g. benzene or xylene, and (3) an acidic or alkaline catalyst, e.g. sodium methoxide, ethoxide or hydroxide, reproducability of the degree of alcoholysis in at least two successive runs is attained by regulating the total initial water content of the reaction medium to be substantially constant from run to run and within the range 1-10,000 p.p.m. Such regulation may be effected by drying one or both of the reaction media, and by conducting the reaction under an inert atmosphere. Several alternative methods of product recovery are given: (1) removing the alcohol, ester by-product and catalyst by extraction with water, and either evaporating or steamdistilling; (2) adding additional alcohol to the reaction mixture, at reflux temperature, allowing the mixture to stand for a period, and then agitating to produce a rubbery crumb; or (3) adding further alcohol at reflux temperature to precipitate the product. Which method is used depends on the residual vinyl ester content of the product.
GB4380373A 1974-02-18 1974-02-18 Process forthe controlled alcoholysis of ethylene-vinyl ester interpolymers Expired GB1468793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4380373A GB1468793A (en) 1974-02-18 1974-02-18 Process forthe controlled alcoholysis of ethylene-vinyl ester interpolymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4380373A GB1468793A (en) 1974-02-18 1974-02-18 Process forthe controlled alcoholysis of ethylene-vinyl ester interpolymers

Publications (1)

Publication Number Publication Date
GB1468793A true GB1468793A (en) 1977-03-30

Family

ID=10430373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4380373A Expired GB1468793A (en) 1974-02-18 1974-02-18 Process forthe controlled alcoholysis of ethylene-vinyl ester interpolymers

Country Status (1)

Country Link
GB (1) GB1468793A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038009A1 (en) * 1980-04-11 1981-10-21 BASF Aktiengesellschaft Process for preparing hydroxyl groups containing polymers
EP0067021A1 (en) * 1981-05-29 1982-12-15 Capsulated Systems, Inc. Hydrolyzed ethylene vinyl acetate polymer and microcapsule
FR2523138A1 (en) * 1982-03-15 1983-09-16 Leuna Werke Veb PROCESS FOR THE PREPARATION OF MODIFIED OLEFIN COPOLYMERS CONTAINING VINYL ESTERS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038009A1 (en) * 1980-04-11 1981-10-21 BASF Aktiengesellschaft Process for preparing hydroxyl groups containing polymers
EP0067021A1 (en) * 1981-05-29 1982-12-15 Capsulated Systems, Inc. Hydrolyzed ethylene vinyl acetate polymer and microcapsule
FR2523138A1 (en) * 1982-03-15 1983-09-16 Leuna Werke Veb PROCESS FOR THE PREPARATION OF MODIFIED OLEFIN COPOLYMERS CONTAINING VINYL ESTERS

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee