Stablizer mixtures for vinyl chloride polymer masses

Details Stablizer mixtures for vinyl chloride polymer masses Stablizer mixtures for vinyl chloride polymer masses

1985-06-20

1988-01-05

Foelak, Morton

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

Synthetic resins

Processes of preparing a desired or intentional composition...

252407, 524396, 524399, 524400, C08K 515, C09K 1506

Patent

active

047177470

ABSTRACT:
Stabilizer mixtures for vinyl chloride polymerizates for the improvement of the initial clarity and the heat constancy thereof. The stabilizer mixture contains nitrogen-free 3,5-substituted tetrahydropyrane-2,4,6-trione compounds of the formula: ##STR1## wherein R is a substituted or unsubstituted alkyl radical having 1 to 6 C atoms, and a metal salt of an organic acid and/or a metal phenolate.

REFERENCES:
patent: 1898363 (1933-02-01), Grenbank
patent: 2316371 (1943-04-01), Strother
patent: 3223660 (1965-12-01), Pulver
patent: 3346536 (1967-10-01), Kauder et al.
patent: 3506606 (1970-04-01), Hill
patent: 3660331 (1972-05-01), Ludwig
patent: 4123400 (1978-10-01), Gay

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