Identification of absorbent material with a thermostable coloran

Details Identification of absorbent material with a thermostable coloran Identification of absorbent material with a thermostable coloran

1990-02-20

1991-07-16

Pianalto, Bernard

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

427287, 4273722, 428470, 428699, B32B 514

Patent

active

050324527

ABSTRACT:
A process is provided for applying a thermostable identification mark to an absorbent material such as piece goods or ceramics. A cobalt salt solution containing hydrogen peroxide is applied in the form of a mark to the surface of an absorbent material, followed by a thermal aftertreatment above 400.degree. C. for stabilization of the identifying mark.

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