Stabilized halogenated butyl rubber

Details Stabilized halogenated butyl rubber Stabilized halogenated butyl rubber

1978-04-03

1978-12-19

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 314R, 260 332R, 260 4235, 260 457R, C08K 510

Patent

active

041305191

ABSTRACT:
A stabilized halogenated butyl rubber composition comprises halogenated butyl rubber, an alkali metal or alkaline earth metal carboxylate, an ether and an oxide or hydroxide of a Group IIA metal as exemplified by halogenated butyl rubber containing both bromine and chlorine stabilized with a composition comprising calcium stearate, polyethoxylated adducts of sorbitol esterified with from 1 to 6 moles of oleic acid and mixtures thereof, and calcium hydroxide.
Halogenated butyl rubbers stabilized in the manner disclosed exhibit improved resistance to discoloration upon high temperature exposure, such as during the drying of polymers in the course of manufacture.

REFERENCES:
patent: 2075251 (1937-03-01), Winkelmann
patent: 2364410 (1944-12-01), Whittaker
patent: 2833734 (1958-05-01), Morrissey et al.
patent: 2958667 (1960-11-01), Eby et al.
patent: 2962473 (1960-11-01), Baldwin et al.
patent: 3558537 (1971-01-01), Hecker et al.
patent: 3717600 (1973-02-01), Dalhuisen et al.
patent: 4029619 (1977-06-01), Tajima et al.
Journal of Polymer Science - Polymer Chemistry Edition, vol. 12, 2305-2315 (1974), Dodson et al.

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