GB1416807A - Method for preparation of acrylonitrile copolymers by hydrolysis in a solution of nitric acid - Google Patents

Method for preparation of acrylonitrile copolymers by hydrolysis in a solution of nitric acid

Info

Publication number
GB1416807A
GB1416807A GB3214373A GB3214373A GB1416807A GB 1416807 A GB1416807 A GB 1416807A GB 3214373 A GB3214373 A GB 3214373A GB 3214373 A GB3214373 A GB 3214373A GB 1416807 A GB1416807 A GB 1416807A
Authority
GB
United Kingdom
Prior art keywords
hydrolysis
nitric acid
acrylonitrile
polymers
solution
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
GB3214373A
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 GB1416807A publication Critical patent/GB1416807A/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

1416807 Hydrolysis of acrylonitrile polymers CESKOSLOVENSKA AKADEMIE VED 5 July 1973 [14 July 1972] 32143/73 Heading C3P Acrylonitrile polymers and copolymers, free from acrylamide and methacrylamide, are hydrolysed by (1) heating with 50-70% nitric acid at 25-60‹ C. for 10 minutes to 24 hours, and then (2) cooling the mixture to - 10‹ to + 20‹ C. and maintaining this temperature for a time sufficient for the required degree of hydrolysis to be effected. Preformed polymers may be dissolved in nitric acid and hydrolysed, or the polymers may be produced in nitric acid solution and hydrolysis effected in situ in the same solution. In examples hydrolysis is effected on (1) preformed polyacrylonitrile, (2) preformed acrylonitrile/n-butyl acrylate copolymer, (3) polyacrylonitrile formed in situ and (4) acrylonitrile/styrene copolymer formed in situ.
GB3214373A 1972-07-14 1973-07-05 Method for preparation of acrylonitrile copolymers by hydrolysis in a solution of nitric acid Expired GB1416807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS501172A CS158484B1 (en) 1972-07-14 1972-07-14

Publications (1)

Publication Number Publication Date
GB1416807A true GB1416807A (en) 1975-12-10

Family

ID=5394142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3214373A Expired GB1416807A (en) 1972-07-14 1973-07-05 Method for preparation of acrylonitrile copolymers by hydrolysis in a solution of nitric acid

Country Status (4)

Country Link
JP (1) JPS4959193A (en)
CS (1) CS158484B1 (en)
DE (1) DE2336036A1 (en)
GB (1) GB1416807A (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
JPS4959193A (en) 1974-06-08
DE2336036A1 (en) 1974-01-31
CS158484B1 (en) 1974-11-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees