Zinc stannate/zinc hydroxystannate heat-stabilized chloropolymer

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524303, 524304, 524357, 524399, 524436, C08K 324

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active

052782182

ABSTRACT:
Chlorine-containing polymers, e.g., PVC and poly(vinylidene chloride), are effectively heat-stabilized by formulating therewith at least one zinc stannate and/or at least one zinc hydroxystannate, characteristically in combination with at least one organozinc compound, at least one organocalcium, organobarium, organomagnesium or organolanthanide compound, and at least one beta-ketoaldehyde, beta-diketone, 1,4-dihydropyridine monomer or polymer, beta-ketoester, beta-aminocrotonic ester, mercaptocarboxylic ester or alpha-phenylindole.

REFERENCES:
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patent: 3900441 (1975-08-01), King
patent: 4102839 (1978-07-01), Crochemore et al.
Database WPIL, Abstract No. 91-058129 [08], Derwent Publications Ltd., "Flame retardant halogenated polymer composition".
Specialty Chemicals 1989, vol. 9, No. 3, pp. 194, 196, 198, 200, 202; P. Cusack et al.: "Investigations into tin-based flame retardants and smoke suppressants".

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