US PATENT SUBCLASS 8 / 120
.~.~ Esterifying, etherifying or immunizing

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

115.51  DF  CHEMICAL MODIFICATION OF TEXTILES OR FIBERS OR PRODUCTS THEREOF {7}
116.1  DF  .~ Cellulose fibers {8}
120.~.~ Esterifying, etherifying or immunizing {2}
121  DF  .~.~.~> Acetylation
122  DF  .~.~.~> Xanthogenation

DEFINITION

Classification: 8/120

(under subclass 116.1) Processes for the treat- ment of cellulose fibers and fabrics so as to form chemical derivatives thereof, such as ethers, esters, etc., without entirely destroying the structure of the fibers. The materials so treated generally lose the dyeing characteristics and affinity for the usual cotton dyes and may take on an affinity for dyes usually employed for animal fibers and cellulose ethers or esters.

SEE OR SEARCH THIS CLASS, SUBCLASS:

117, for the production of wool-like or crinkle effects.

181+, for immunizing with nitrogenous organic compounds.

SEE OR SEARCH CLASS

536, Organic Compounds,

32+, 43+, 58+, and 84+ for the complete dissolution of cellulosic material and its regeneration.