Stabilization of vinyl halide resins

Details Stabilization of vinyl halide resins Stabilization of vinyl halide resins

1977-01-26

1979-06-26

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4575M, 260 23XA, 260 4224, 260 4249, 260 4254, 260 4585H, C08K 556, C08K 308, C08K 324

Patent

active

041592611

ABSTRACT:
This invention relates to the use of indium compounds as thermal stabilizers for vinyl halide resins. Very small additions of indium compounds to vinyl halide resins, with or without the inclusion of other stabilizers, have been found to contribute marked improvements in resistance to high temperature discoloration. For example, additions sufficient to provide less than 100 ppm of indium based upon the weight of said resin are particularly effective in helping to maintain original color over a longer period of time at elevated temperatures such as are encountered during hot processing and fabricating operations.

REFERENCES:
patent: 2795570 (1957-06-01), Fuchs et al.
patent: 2932590 (1960-04-01), Barrett et al.
patent: 3315111 (1967-04-01), Jaff et al.
patent: 3523099 (1970-08-01), Shepard et al.

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