US PATENT SUBCLASS 522 / 90
.~.~ Processes involving a polyurethane having terminal ethylenic unsaturation as reactant or as solid polymer; or compositions therefore

Current as of: June, 1999
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522 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ COMPOSITIONS TO BE POLYMERIZED BY WAVE ENERGY WHEREIN SAID COMPOSITION CONTAINS A RATE-AFFECTING MATERIAL; OR COMPOSITIONS TO BE MODIFIED BY WAVE ENERGY WHEREIN SAID COMPOSITION CONTAINS A RATE-AFFECTING MATERIAL; OR PROCESSES OF PREPARING OR TREATING A SOLID POLYMER UTILIZING WAVE ENERGY {27}
90.~.~ Processes involving a polyurethane having terminal ethylenic unsaturation as reactant or as solid polymer; or compositions therefore {8}
91  DF  .~.~.~> With a polysiloxane reactant or polymer
92  DF  .~.~.~> With a reactant containing ethylenic unsaturation derived from poly 1,2 epoxide or polymer
93  DF  .~.~.~> With polycarboxylic acid or derivative and a polyol, a condensate or solid polymer thereof reactant
94  DF  .~.~.~> With aldehyde or aldehyde derivative reactant, condensate or solid polymer thereof
95  DF  .~.~.~> With solid polymer derived solely from ethylenic monomers
96  DF  .~.~.~> With ethylenic reactant
97  DF  .~.~.~> Polyurethane has an oxygen other than as part of a urethane or carboxylic acid ester group
98  DF  .~.~.~> Polyurethane has at least one non-terminal ethylenic group

DEFINITION

Classification: 522/90

Processes involving a polyurethane having terminal ethylenic unsaturation as reactant or as solid polymer; or compositions therefore:

(under subclass 1) Subject matter involving treating a polyurethane having at least one terminal ethylenic group to form a solid polymer therefrom; or chemically modifying a solid polymer derived from a ployurethane reactant having at least one terminal ethylenic group; or chemically modifying a solid polymer by reaction with a polyurethane reactant containing at least one terminal ethylenic group; or compositions therefore.

(1) Note. Terminal ethylenic as used herein denotes a carbon atom bonded toan adjacent carbon through eithera double or triple bond and wherein at least one of the linked carbons is not bonded to another carbon atom either directly or indirectly through anoncarbon atom, with the provisothat indirect does not include the double or triple bond (e.g., C(1)-C(2)=C(3)-N-C(4) does not contain terminal unsaturation since carbon 2 is bonded directly to carbon 1 and since carbon 3 is indirectly bonded to carbon 4 through nitrogen.

(2) Note. HN-C=C-C3 contains a terminally unsaturated group since carbon 1 is not bonded to any other carbon atom other than 2.

(3) Note. A polyurethane for purposes of this subclass requires a minimum of two urethane groups, i.e., HNO- but only one of the end units of the molecule need be terminally unsaturated.

(4) Note. This subclass provides for compositions for use in the processes provided for herein.

(5) Note. The unsaturated polyurethane can be a solid polymer devoid of ethylenic urethane groups which is modified to form unsaturated terminal groups and urethane linkages, and which is subsequently exposed to wave energy.

(6) Note. See Class 520, Glossary, for the definition of the term "ethylenically unsaturated". SEE OR SEARCH THIS CLASS, SUBCLASS:

113+, 134+, 150+, and 162+, for modifying a solid polymer derived from an unsaturated polyurethane reactant.