PROCESS FOR THE PREPARATION OF HYDROXYL-FUNCTIONALIZED POLYETHERPOLYSILOXANE BLOCK COPOLYMERS
The present invention is directed to a hydroxyl-functionalized polyether-polysiloxane block copolymer of the structure A(-X-B)n wherein: A represents said polysiloxane block; B represents said polyether block; X is a linker group characterized by including the moiety Si-C-C- of which said Si is the...
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| creator | WOZNICKA, MARTA KLEIN, JOHANN GHOSH, SWARUP MEJIA, ESTEBAN MARQUARDT, MARION DAMKE, JAN-ERIK DESPOTOPOULOU, CHRISTINA KRAGL, UDO |
| description | The present invention is directed to a hydroxyl-functionalized polyether-polysiloxane block copolymer of the structure A(-X-B)n wherein: A represents said polysiloxane block; B represents said polyether block; X is a linker group characterized by including the moiety Si-C-C- of which said Si is the terminal silicon atom of the polysiloxane block A; and, n is an integer of from 2 to 4, said block copolymer being further characterized by a terminal unsaturation of less than 0.04 meq/g, preferably less than 0.03 meq/g and more preferably less than 0.025 meq/g and the method for producing thereof. |
| format | Patent |
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B represents said polyether block; X is a linker group characterized by including the moiety Si-C-C- of which said Si is the terminal silicon atom of the polysiloxane block A; and, n is an integer of from 2 to 4, said block copolymer being further characterized by a terminal unsaturation of less than 0.04 meq/g, preferably less than 0.03 meq/g and more preferably less than 0.025 meq/g and the method for producing thereof.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | PROCESS FOR THE PREPARATION OF HYDROXYL-FUNCTIONALIZED POLYETHERPOLYSILOXANE BLOCK COPOLYMERS |
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