US PATENT SUBCLASS 8 / 493
.~ Modification of molecular structure of substrate by chemical means, e.g., cross-linking of substrate, hydrolysis of substrate, etc.

Current as of: June, 1999
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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

491  DF  OVERALL DIMENSIONAL MODIFICATION OR STABILIZATION, E.G., CREPING, ETC., INCLUDING USE OF CHEMICAL ADDITIVE TO FORM AT LEAST A TEMPORARY COMPOSITION, WITH DYEING PROCESS {2}
493.~ Modification of molecular structure of substrate by chemical means, e.g., cross-linking of substrate, hydrolysis of substrate, etc.

DEFINITION

Classification: 8/493

Modification of molecular structure of substrate by chemical means, e.g., cross-linking of substrate, hydrolysis of substrate, etc.:

(under subclass 491) Processes involving modification of chemical structure by chemical means, e.g., cross-linking, hydrolysis, etc., of substrate and product thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

541, for cross-linking agents such as diepoxides, to anchor a dye.