US PATENT SUBCLASS 530 / 218
.~.~.~ Polyhydroxy material used in the esterification, or product thereof (e.g., forming ester gum, 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}
215  DF  .~.~ Esterification of rosin or derivative via carboxyl group, or product thereof {3}
218.~.~.~ Polyhydroxy material used in the esterification, or product thereof (e.g., forming ester gum, etc.)

DEFINITION

Classification: 530/218

(under subclass 215) Processes wherein the esterification utilizes a polyhydroxy containing material, or products of such processes.