Temperature-stable pigment-colored plastic compositions, process

Details Temperature-stable pigment-colored plastic compositions, process Temperature-stable pigment-colored plastic compositions, process

1992-06-23

1993-05-04

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106400, 106401, 106434, 106 1813, C09C 120, C09C 114, C09D 516, C09D 518

Patent

active

052078280

ABSTRACT:
Plastics are described which contain, in intimate contact with the pigments, boric acid in a quantity of 1 to 20% by weight, preferably 2 to 15% by weight, of the dry pigment. Also described is the process for producing said plastics, in which the usual plastic granules or powders are mixed with the above-mentioned quantities of boric acid before, during or after addition of the pigment, and the boric acid is brought into intimate contact with the pigment before further processing, of the particulate plastic is mixed with the pigment containing the above mentioned quantities of boric acid before being subjected to further processing under thermal stress.

REFERENCES:
patent: 3942998 (1976-03-01), Higgins
patent: 4491619 (1985-01-01), Biermann et al.
C.A. 91:141725f; "Polymer Composition"; Vaisman, Y.; abstract of USSR 678,057; 5 Jul. 1979.
European Search Report; pp. 1-3.

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