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IT1048753B - Styrene-acrylonitrile or ABS polymers - with low residual acrylonitrile monomer content by treating with alkali (bi)sulphide - Google Patents

Styrene-acrylonitrile or ABS polymers - with low residual acrylonitrile monomer content by treating with alkali (bi)sulphide

Info

Publication number
IT1048753B
IT1048753B IT2852575A IT2852575A IT1048753B IT 1048753 B IT1048753 B IT 1048753B IT 2852575 A IT2852575 A IT 2852575A IT 2852575 A IT2852575 A IT 2852575A IT 1048753 B IT1048753 B IT 1048753B
Authority
IT
Italy
Prior art keywords
acrylonitrile
sulphide
alkali
styrene
treating
Prior art date
Application number
IT2852575A
Other languages
Italian (it)
Original Assignee
Labofina Sa
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
Priority claimed from BE149845A external-priority patent/BE821435A/en
Application filed by Labofina Sa filed Critical Labofina Sa
Application granted granted Critical
Publication of IT1048753B publication Critical patent/IT1048753B/en

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  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

Styrene-acrylonitrile (SAN) and ABS type polymers made by polymerising styrene and acrylonitrile in the presence of an elastomer such as butadiene rubber, are treated with an aq. soln. of an alkali (bi)sulphide to remove traces of residual acrylonitrile monomer, which is toxic and represents a health hazard during processing and use of the polymer. Pref. the treatment is carried out at 100-110 degrees C of the alkali (bi)sulphide necessary to react with the acrylonitrile present.
IT2852575A 1974-10-24 1975-10-21 Styrene-acrylonitrile or ABS polymers - with low residual acrylonitrile monomer content by treating with alkali (bi)sulphide IT1048753B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE149845A BE821435A (en) 1974-10-24 1974-10-24 PROCESS FOR PREPARING COPOLYMERS.

Publications (1)

Publication Number Publication Date
IT1048753B true IT1048753B (en) 1980-12-20

Family

ID=3842711

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2852575A IT1048753B (en) 1974-10-24 1975-10-21 Styrene-acrylonitrile or ABS polymers - with low residual acrylonitrile monomer content by treating with alkali (bi)sulphide

Country Status (3)

Country Link
AU (1) AU7870475A (en)
CA (1) CA1038548A (en)
IT (1) IT1048753B (en)

Also Published As

Publication number Publication date
CA1038548A (en) 1978-09-12
AU7870475A (en) 1976-09-02

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