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Synergistic light stabilizer blends for poly(vinyl chloride) polymers |
| T985003 |
Synergistic light stabilizer blends for poly(vinyl chloride) polymers
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| Patent Drawings: | |
| Inventor: |
Bertozzi, et al. |
| Date Issued: |
August 7, 1979 |
| Application: |
05/944,120 |
| Filed: |
September 20, 1978 |
| Inventors: |
Bertozzi; Eugene R. (Yardley, PA)
Paul, 3rd; Henry N. (Philadelphia, PA)
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| Assignee: |
Thiokol Corporation (Newtown, PA) |
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| U.S. Class: |
252/406; 524/181; 556/89 |
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| Abstract: |
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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