Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1980-04-15
1981-06-23
Hoke, V. P.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 4595R, 252400R, 252404, C08K 558
Patent
active
042749999
ABSTRACT:
Compositions for stabilizing a vinyl or vinylidene halide polymer or chlorinated polyethylene which comprise a major proportion of (a) at least one ester tin compound, for example .beta.-carboalkoxyethyl tin mercaptides, .beta.-carboalkoxyethyl tin mercapto-acid esters and the like and a minor proportion of (b) at least one unsubstituted or alkyl substituted o-dihydric phenol, such as catechol, t-butyl catechol and 2,3-dihydroxy naphthalene.
These compositions synergistically contribute to the heat stability of vinyl or vinylidene halide polymers or chlorinated polyethylene. The performance of the compositions disclosed is particularly improved as regards resistance to early discoloration and long term heat stability of the ester tin compounds contained in them. Moreover, the amounts in which the compounds need be used for stabilization can be kept relatively small.
REFERENCES:
patent: 3313761 (1967-04-01), Barnes et al.
patent: 3483159 (1969-12-01), Kauder
patent: 4029618 (1977-06-01), Dieckmann
patent: 4134878 (1979-01-01), Burley et al.
patent: 4160762 (1979-07-01), Minagawa et al.
Burley Joseph W.
Hope Peter
Pritchard Malcolm G.
Akzo N.V.
Hoke V. P.
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