Modified polyvinylchloride
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United States of America Patent
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-
Nov 3, 1981
Grant Date -
N/A
app pub date -
Dec 16, 1980
filing date -
Dec 16, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to modified polyvinylchloride, wherein part of the chlorine atoms are replaced by groups of the formula --S--CH.sub.2 --CH.sub.2 --R--(CH.sub.2 --CH.sub.2 --R).sub.n --Alk, wherein R is selected from oxygen, sulfur and --NH--, where R may also designate a bond, where Alk designates an alkyl group of up to 14 carbon atoms, and where n is zero or an integer of from 1 to 100, and to a process for the production of such modified polyvinylchloride polymers which comprises reacting an aqueous emulsion or suspension of polyvinylchloride in the presence of a solvent adapted to cause swelling of the PVC particles with a compound of the formula Alk--(CH.sub.2 --CH.sub.2 --R).sub.n --R--CH.sub.2 --CH.sub.2 --SH, wherein Alk, R and n are as defined above.
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