GB1416808A - Method for preparation of copolymers by the partial hydrolysis of acrylonitrile polymers and copolymers in nitric acid - Google Patents

Method for preparation of copolymers by the partial hydrolysis of acrylonitrile polymers and copolymers in nitric acid

Info

Publication number
GB1416808A
GB1416808A GB3214473A GB3214473A GB1416808A GB 1416808 A GB1416808 A GB 1416808A GB 3214473 A GB3214473 A GB 3214473A GB 3214473 A GB3214473 A GB 3214473A GB 1416808 A GB1416808 A GB 1416808A
Authority
GB
United Kingdom
Prior art keywords
copolymers
acrylonitrile
hydrolysis
nitric acid
preparation
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
GB3214473A
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.)
Czech Academy of Sciences CAS
Original Assignee
Czech Academy of Sciences CAS
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 Czech Academy of Sciences CAS filed Critical Czech Academy of Sciences CAS
Publication of GB1416808A publication Critical patent/GB1416808A/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

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)
  • Artificial Filaments (AREA)

Abstract

1416808 Hydrolysis of acrylonitrile polymers CESKOSLOVENSKA AKADEMIE VED 5 July 1973 [14 July 1972] 32144/73 Heading C3P Polyacrylonitrile, and copolymers of acrylonitrile with up to 15 mol per cent of other monomers, are hydrolysed by (i) adding the polymer to agitated nitric acid of 50-72% concentration at a temperature of -15‹ to - 50‹ C. to form a suspension of pasty consistency, and (ii) warming the mixture to - 5‹ to + 40‹ C. and maintaining it at this temperature for a time sufficient to effect the required degree of hydrolysis. The second stage may be effected in a mould. Examples describe the hydrolysis of polyacrylonitrile, acrylonitrile / acrylamide copolymer, acrylonitrile / acrolein / acrylamide copolymer and acrylonitrile/n-butyl acrylate copolymer.
GB3214473A 1972-07-14 1973-07-05 Method for preparation of copolymers by the partial hydrolysis of acrylonitrile polymers and copolymers in nitric acid Expired GB1416808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS501072A CS158845B1 (en) 1972-07-14 1972-07-14

Publications (1)

Publication Number Publication Date
GB1416808A true GB1416808A (en) 1975-12-10

Family

ID=5394128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3214473A Expired GB1416808A (en) 1972-07-14 1973-07-05 Method for preparation of copolymers by the partial hydrolysis of acrylonitrile polymers and copolymers in nitric acid

Country Status (4)

Country Link
JP (1) JPS4959192A (en)
CS (1) CS158845B1 (en)
DE (1) DE2335696A1 (en)
GB (1) GB1416808A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4997610A (en) * 1980-09-13 1991-03-05 Hoechst Aktiengesellschaft Process for producing filaments and fibers of acrylic polymers which contain carboxyl groups

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4997610A (en) * 1980-09-13 1991-03-05 Hoechst Aktiengesellschaft Process for producing filaments and fibers of acrylic polymers which contain carboxyl groups

Also Published As

Publication number Publication date
DE2335696A1 (en) 1974-01-31
JPS4959192A (en) 1974-06-08
CS158845B1 (en) 1974-12-27

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Legal Events

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PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee