US PATENT SUBCLASS 8 / 554
.~.~ Cationic polymer, e.g., aminated polymer without -COO-, -(O=)S(=O)-, -O (O=)P(=O)-O- groups, e.g., polyacrylamide, etc.

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

550  DF  ORGANIC ADDITIVE FOR DYE COMPOSITION, DYE COMPOSITION CONTAINING ORGANIC ADDITIVE, PROCESS OR PRODUCT; OTHER THAN EMULSIFIER, PH ADJUSTER OR STARCH OR GUM PRINT PASTE THICKENER {24}
552  DF  .~ Polymeric additive {5}
554.~.~ Cationic polymer, e.g., aminated polymer without -COO-, -(O=)S(=O)-, -O (O=)P(=O)-O- groups, e.g., polyacrylamide, etc. {2}
555  DF  .~.~.~> Acrylamide or dialkylaminoalkylacrylate polymer
556  DF  .~.~.~> Cyanamide- or dicyandiamide-formaldehyde polymer

DEFINITION

Classification: 8/554

Cationic polymer, e.g., aminated polymer without -COO-, -(O=)S(=O)-O, -O-(O=)P(=O)-O- groups, e.g., polyacrylamide, etc.:

(under subclass 552) Subject matter wherein a cationic polymer is employed as a dye assistant.

(1) Note. The criterion for a cationic polymer is the ability of acid dyes to be substantive thereto, i.e., to permanently dye the basic polymer.

(2) Note. See the Glossary for a definition of acid dye.

(3) Note. Polymers with amine groups with no acid groups, or polyamides are examples of cationic dyes.