Stabilizer composition for chlorine-containing polymers and proc

Details Stabilizer composition for chlorine-containing polymers and proc Stabilizer composition for chlorine-containing polymers and proc

1990-10-01

1992-07-28

Kyle, Deborah L.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

528490, 524399, 524401, 524400, C08K 334

Patent

active

051338998

ABSTRACT:
Disclosed to a stabilizer composition for a chlorine-containing polymer, which comprises a zeolite type stabilizer; calcium hydroxide or magnesium hydroxide, a metal soap type stabilizer and perchloric acid as indispensable components.
The stabilizer composition is obtained by adding a metal soap type stabilizer to a mixture of a zeolite type stabilizer and calcium hydroxide or magnesium hydroxide under attrition to cover the mixture with the metal soap type stabIlizer at a high efficiency, and adding perchloric acid to the covered mixture.
In the stabilizer composition of the present invention, the initial discoloration, which is a fatal defect of the conventional zeolite type stabilizer for a chlorine-containing polymer, can be prevented, and a sufficient hydrogen chloride-capturing capacity is exerted and a high heat stability is attained without occurrence of bleeding.

REFERENCES:
patent: 3382199 (1968-05-01), Scullin
patent: 3535249 (1970-10-01), Larson
patent: 3816342 (1974-06-01), Plank et al.
patent: 3830751 (1974-08-01), Stapfer et al.
patent: 4060508 (1977-11-01), Sugahara et al.
patent: 4242251 (1980-12-01), Aishima et al.
patent: 4686255 (1987-08-01), Erwied et al.
patent: 5004776 (1991-04-01), Tadenuma et al.

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