Non-toxic stabilizer for vinyl chloride resins

Details Non-toxic stabilizer for vinyl chloride resins Non-toxic stabilizer for vinyl chloride resins

1973-07-30

1977-08-09

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252406, C08K 558

Patent

active

040410145

ABSTRACT:
Polyvinyl chloride compositions suitable for use as food packaging materials are stabilized against the degradative effects of heat using a mixture of di-n-octyltin-S,S'-bis(isooctyl mercaptoacetate) and an oligomeric form of di-n-octyltin maleate wherein the weight ratio of the two component stabilizers is between 1:3 and 4:1, respectively. The combination of stabilizers imparts a greater degree of stabilization than can be achieved using either component at a concentration equal to that of the mixture, as evidenced by a delay in the appearance of severe discoloration during exposure to temperatures of 250.degree. C. and higher.

REFERENCES:
patent: 2307157 (1943-01-01), Quattlebaum et al.
patent: 2789963 (1957-04-01), Hecker
patent: 3390159 (1968-06-01), Katsumura et al.
patent: 3655616 (1972-04-01), Freeze et al.

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