4-PIPERIDONE KETAL DERIVATIVES,THEIR PREPARATION AND THEIR USE AS STABILIZERS
1336403 Stabilizing polymers SANKYO CO Ltd 24 Jan 1971 3281/72 Headings C3P and C3R [Also in Division C2] Piperidine derivatives of the formulae in which R1 is a C -C 8 alkyl group and R2 is a C 2 or C 3 alkylene group or an o-phenylene group are used for stabilizing polymers against photo- and ther...
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Zusammenfassung: | 1336403 Stabilizing polymers SANKYO CO Ltd 24 Jan 1971 3281/72 Headings C3P and C3R [Also in Division C2] Piperidine derivatives of the formulae in which R1 is a C -C 8 alkyl group and R2 is a C 2 or C 3 alkylene group or an o-phenylene group are used for stabilizing polymers against photo- and thermal deterioration. Polymers which may be so stabilized include polyolefins, polydienes, polystyrenes, polyvinyl chlorides, polyvinylidene chlorides, polyacetals, polyesters, polyamides and polyurethanes. The piperidine derivatives may be incorporated into the polymers at any stage of their production and the polymers may contain other anti-oxidants and ultraviolet absorbents as well as conventional adjuvants. Examples are given of the stabilization of polypropylene, polyethylene, nylon, a polyurethane prepared from polycaprolactone, and polyvinylchloride. |
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