METHOD OF PRODUCING POLYBASIC ACID VINYL MONOMER COPOLYMER

METHOD OF PRODUCING POLYBASIC ACID VINYL MONOMER COPOLYMER

PROBLEM TO BE SOLVED: To provide a method of producing a polybasic acid vinyl monomer copolymer safely at low cost.SOLUTION: A copolymer of a styrene unit derived from a styrene-maleic anhydride copolymer and a polybasic acid unit is precipitated by: dissolving the styrene-maleic anhydride copolymer...

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Hauptverfasser: MATSUGI SHIN, OHIRA HIROKI
Format: Patent
Sprache:eng
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator MATSUGI SHIN
OHIRA HIROKI
description PROBLEM TO BE SOLVED: To provide a method of producing a polybasic acid vinyl monomer copolymer safely at low cost.SOLUTION: A copolymer of a styrene unit derived from a styrene-maleic anhydride copolymer and a polybasic acid unit is precipitated by: dissolving the styrene-maleic anhydride copolymer in water or an alkali aqueous solution; and then making the resultant aqueous solution acidic. Thus the polybasic acid vinyl monomer copolymer can be obtained which includes the copolymer thus precipitated.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title METHOD OF PRODUCING POLYBASIC ACID VINYL MONOMER COPOLYMER
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