Synergistic light stabilizer blends for poly(vinyl chloride) polymers
tin salts formed by the reaction of di lower alkyl or aryl tin oxides and dimercapto ethyl formal and similar dimercapto compounds of the general formula ##STR1## wherein R is --(CH.sub.2).sub.m (OCH.sub.2).sub.s --O--(CH.sub.2).sub.m --(OCH.sub.2).sub.p --O--.sub.n (CH.sub.2).sub.m -- wherein p is 0 or 1, m is 2 to about 6 and n is 0 to about 6 and R' is lower alkyl of up to about 10 carbon atoms, or carbocyclic aryl containing one or two aromatic rings when combined with conventional tin based stabilizers show a synergistic light and heat stabilizing effect in poly(vinyl chloride) polymers.
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Description
Patent History
Patent number: T985003
Type: Grant
Filed: Sep 20, 1978
Date of Patent: Aug 7, 1979
Assignee: Thiokol Corporation (Newtown, PA)
Inventors: Eugene R. Bertozzi (Yardley, PA), Henry N. Paul, 3rd (Philadelphia, PA)
Application Number: 5/944,120
Type: Grant
Filed: Sep 20, 1978
Date of Patent: Aug 7, 1979
Assignee: Thiokol Corporation (Newtown, PA)
Inventors: Eugene R. Bertozzi (Yardley, PA), Henry N. Paul, 3rd (Philadelphia, PA)
Application Number: 5/944,120
Classifications
Current U.S. Class:
260/4575S;
260/4297;
Sulphur Organic Compound Containing (252/406);
424/288
International Classification: C08K 557;
International Classification: C08K 557;