US PATENT SUBCLASS 560 / 359
.~.~.~ Plural benzene rings bonded directly to isocyanate groups (e.g., diisocyanatodiphenylmethane, etc.)

Current as of: June, 1999
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560 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {17}
330  DF  .~ Isocyanate esters (i.e., compounds containing the isocyanate group, -N=C=O, bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {7}
358  DF  .~.~ Benzene ring bonded directly to the isocyanate group {2}
359.~.~.~ Plural benzene rings bonded directly to isocyanate groups (e.g., diisocyanatodiphenylmethane, etc.)

DEFINITION

Classification: 560/359

(under subclass 358) Compounds wherein isocyanate groups are bonded directly to more than one benzene ring.

(1) Note. An example of a compound provided for herein is: [figure]