Thermal stabilization of vinyl resins

Details Thermal stabilization of vinyl resins Thermal stabilization of vinyl resins

1980-05-01

1982-04-13

Hoke, V. P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524180, C08K 536, C08K 546

Patent

active

043247180

ABSTRACT:
Thermal stabilization of halogeno-vinyl resins is achieved by the incorporation of one or more tetramercapto-tin compounds. The stabilization is improved by the addition of a crown compound, i.e. a cyclic polyether. The proportion of the crown compound is in general 10 to 200 parts by weight, preferably 25 to 100 parts, per 100 parts by weight of tin tetramercaptide.

REFERENCES:
patent: 2479918 (1949-08-01), Fincke et al.
patent: 2726227 (1955-12-01), Leistner et al.
patent: 2726254 (1955-12-01), Leistner et al.
patent: 2888435 (1959-05-01), Wallace
patent: 4177187 (1979-12-01), Bohen
J. American Chem. Soc. 89, 2495 and 7017, 1967, C. J. Pedersen.

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