PROCESSES FOR CROSS-LINKING CELLULOSE ETHERS UNDER MILD CONDITIONS

The present technology provides processes for cross-linking cellulose ethers under mild conditions. The processes include exposing a substantially dry cellulose ether film to a polyisocyanate to provide a cross-linked cellulose ether film, wherein the substantially dry cellulose ether film comprises...

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Hauptverfasser:	KUNDU, PATIT PABAN, SINGH, RATAN PAL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLYSACCHARIDES SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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creator	KUNDU, PATIT PABAN SINGH, RATAN PAL
description	The present technology provides processes for cross-linking cellulose ethers under mild conditions. The processes include exposing a substantially dry cellulose ether film to a polyisocyanate to provide a cross-linked cellulose ether film, wherein the substantially dry cellulose ether film comprises alkoxide groups on the cellulose. The resulting cellulose ether films are highly cross-linked by polyurethane linkages and may be used as membranes in a variety of applications. La présente invention porte sur des procédés de réticulation d'éthers de cellulose dans des conditions douces. Les procédés comprennent l'exposition d'un film d'éther de cellulose sensiblement sec à un polyisocyanate pour obtenir un film d'éther de cellulose réticulé, le film d'éther de cellulose sensiblement sec comprenant des groupes alcoolate sur la cellulose. Les films d'éther de cellulose obtenus sont fortement réticulés par des liaisons polyuréthane et peuvent être utilisés en tant que membranes dans toute une gamme d'applications.
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subjects	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLYSACCHARIDES SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
title	PROCESSES FOR CROSS-LINKING CELLULOSE ETHERS UNDER MILD CONDITIONS
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