Gels

Details Gels Gels

1993-11-10

1995-08-15

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524127, 524141, 524575, C08K 552

Patent

active

054420040

ABSTRACT:
Gels of hard-elastomer-hard block copolymers with at least 300 parts of extending liquid per 100 parts of the copolymer contain at least 50 parts (per 100 parts of copolymer) of a stabilizing additive which resists migration of PVC plasticizers into the gel when in contact with a plasticized PVC article. Styrene-(ethylene-butylene)-styrene triblock copolymers with organic phosphate stabilizers are preferred, these stabilizers tending to raise the gel softening temperature.

REFERENCES:
patent: 3827999 (1974-08-01), Crossland
patent: 4351913 (1982-09-01), Patel
patent: 4361507 (1982-11-01), Bourland
patent: 4369284 (1983-01-01), Chen
patent: 4617422 (1986-10-01), Hagger
patent: 4618213 (1986-10-01), Chen
patent: 4709982 (1987-12-01), Comer et al.
patent: 4798853 (1989-01-01), Handlin, Jr.
Ullmann's Encyclopedia of Industrial Chemistry, 5th Rev. Ed., W. Gerhartz, Exec. Ed., vol. A3, p. 96 (VCH Verlagsgesellschaft mbH, Germany, 1985).
Handbook of Chemical Synonyms and Trade Names, Gardner et al., eds., p. 382 (CRC Press 1978).

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