US PATENT SUBCLASS 530 / 210-- .~ Rosin or derivative used as starting material in process, or product thereof (e.g., using gum rosin, wood rosin, solid tall oil rosin, etc.)

US PATENT SUBCLASS 530 / 210
.~ Rosin or derivative used as starting material in process, or product thereof (e.g., using gum rosin, wood rosin, solid tall oil 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		.~ 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	DF	.~.~> Polymerization or product thereof (e.g., dimer rosin, etc.) {1}
213	DF	.~.~> Boron or phosphorus containing material used in the process, or product thereof
214	DF	.~.~> Diels-Alder adducts (e.g., of maleic anhydride, fumaric acid, etc., with conjugated dienes, such as rosin acids, terpenes, etc.)
215	DF	.~.~> Esterification of rosin or derivative via carboxyl group, or product thereof {3}
219	DF	.~.~> Sulfur, selenium, or tellurium containing material used in the process, or product thereof (e.g., disproportionation of rosin, etc.) {1}
221	DF	.~.~> Nitrogen containing material used in the process, or product thereof {1}
223	DF	.~.~> Hydrogenation or product thereof (e.g., forming dihydro rosin acids; rosinyl alcohol or derivatives; etc.)
224	DF	.~.~> Metal containing material used to form salts of rosin acids, or product thereof {1}
226	DF	.~.~> Heat treatment of rosin or derivative in the absence of nonrosin organic reactants, or product thereof (e.g., forming rosin oil; disproportionated, dehydrogenated, or isomerized rosin; etc.) {1}
228	DF	.~.~> Purification process or product thereof {1}

DEFINITION

Classification: 530/210

(under subclass 200) Processes wherein rosin or a derivative thereof is used as starting material, or products of such processes.

(1) Note. Rosin, also known as colophony, is usually designated according to its source, e.g., gum rosin (from

exudate of incisions on living trees); wood rosin (from Southern pine stumps); and tall oil rosin (from by-products of the wood pulp industry). The principal constituents isolated from rosin are carboxylic acids with a hydrophenanthrene nucleus, comprising abietic acid and its isomers, such as pimaric acid. The acids may exist in rosin as acid anhydrides. The mixed acids are known in the trade as rosin acids or resin acids, the two terms being used interchangeably.

(2) Note. Abietic acid has the following structure: [figure]

(3) Note. This and indented subclasses (210+) provide for the production of mixtures of compounds from rosin or its derivatives, whether or not the individual compounds have a known chemical structure.

(4) Note. The production of a pure resin (rosin) acid or its derivative of known chemical structure from rosin or its derivative is classified in a class and subclass providing for the compound produced.

SEE OR SEARCH CLASS 106, Compositions: Coating or Plastic, for compositions wherein a resin is utilized.

520, Synthetic Resins or Natural Rubbers, including the classes which are part of the 520 series, for synthetic resin compositions wherein a natural resin is utilized.