Process for the mass polymerization of vinyl chloride

Details Process for the mass polymerization of vinyl chloride Process for the mass polymerization of vinyl chloride

1982-06-01

1984-07-17

Henderson, C. A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

524714, 526 78, 526190, 526215, C08F 202, C08F 244

Patent

active

044607547

ABSTRACT:
A process is described for the two-stage mass polymerization of vinyl chloride, in which 0.1 to 3% by weight, relative to the monomer employed, of one or more of the following compounds which are known as heat stabilizers for polyvinyl chloride: monoalkyltin-IV or dialkyltin-IV compounds in which the residual valencies of the tin are attached to organic radicals via sulfur atoms, and/or aminocrotonic acid esters, are added to the polymerization mixture when a conversion of 65 to 85% has been reached. After thorough removal of the unreacted vinyl chloride from the resulting polymer, preferably at temperatures above the glass transition point of the polymer, products are obtained which have an improved color in comparison with polyvinyl chloride produced by conventional mass polymerization.

REFERENCES:
patent: 3627717 (1971-12-01), Kuhnen
patent: 3862066 (1975-01-01), Reiter
patent: 3933776 (1976-01-01), Fournel

Affiliated with

Also associated with

Rating

Process for the mass polymerization of vinyl chloride does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the mass polymerization of vinyl chloride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the mass polymerization of vinyl chloride will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1492009