Method of pigmenting water-absorbable plastic and products there

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524 38, 524 39, 524457, 524461, 524733, 523105, 523106, 351160H, 351162, G02C 704, C08F22028

Patent

active

046380256

ABSTRACT:
A colored opacified plastic material containing an organic binder, at least one pigment, a hydrophilic polymerizable plastic material and a cross linking agent is disclosed together with a method of making the same.

REFERENCES:
patent: 3171869 (1965-03-01), Weinberg
patent: 3557261 (1971-01-01), Wichterle
patent: 3992563 (1976-11-01), Tanaka
patent: 4157892 (1979-06-01), Tanaka et al.
patent: 4234466 (1980-11-01), Takahashi et al.
patent: 4248989 (1981-02-01), Novicky
patent: 4252421 (1981-02-01), Foley, Jr.

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