US PATENT SUBCLASS 530 / 211
.~.~ Polymerization or product thereof (e.g., dimer rosin, etc.)

Current as of: June, 1999
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530 /   HD   CHEMISTRY: NATURAL RESINS OR DERIVATIVES; PEPTIDES OR PROTEINS; LIGNINS OR REACTION PRODUCTS THEREOF

200  DF  NATURAL RESINS OR DERIVATIVES (E.G., WOOD OR PINE TAR; CATIVO RESIN DERIVATIVES, ETC.) {6}
210  DF  .~ Rosin or derivative used as starting material in process, or product thereof (e.g., using gum rosin, wood rosin, solid tall oil rosin, etc.) {10}
211.~.~ Polymerization or product thereof (e.g., dimer rosin, etc.) {1}
212  DF  .~.~.~> Chemical treatment or color modification of polymerized rosin or derivative, or product thereof (e.g., hydrogenation or esterification of polymerized rosin; removal of color bodies from polymerized rosin, etc.)

DEFINITION

Classification: 530/211

(under subclass 210) Processes wherein rosin or a derivative thereof is polymerized, or products of such processes.

(1) Note. This subclass, and the indented subclass 212, are limited to polymers of rosin, per se, of a single derivative of rosin, e.g., an ester, hydrogenated rosin, etc., or of a mixture of two or more types of rosin, derivatives, etc. The most common product is dimer rosin.

SEE OR SEARCH CLASS

525, Synthetic Resins or Natural Rubbers,

54.4+, for reaction products of natural resins with a preformed solid polymer or specified intermediate condensation product (SICP).

526, Synthetic Resins or Natural Rubbers, 238.3, for polymers derived solely from ethylenic reactants at least one of which is a natural resin.

527, Synthetic Resins or Natural Rubbers,

600+, for solid polymers derived from natural resin or derivative by means of chemical reaction with a nonresin reactant.