US PATENT SUBCLASS 530 / 504
.~ Carboxylic acid anhydride, or a compound having halogen bonded directly to acyclic carbon by nonionic bonding, reacted with a lignin or lignin containing substance, or product thereof

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

500  DF  LIGNINS OR DERIVATIVES {7}
504.~ Carboxylic acid anhydride, or a compound having halogen bonded directly to acyclic carbon by nonionic bonding, reacted with a lignin or lignin containing substance, or product thereof

DEFINITION

Classification: 530/504

(under subclass 500) Processes wherein a lignin or a lignin-containing substance is reacted with a carboxylic acid anhydride or with a compound having halogen (i.e., fluorine, chlorine, bromine, or iodine) bonded directly or indirectly to an acyclic carbon by nonionic bonding, or the reaction products thereof.