AQUEOUS SOLUTION CONTAINING BLOCK COPOLYMER AND PREPARATION OF THE SAME

AQUEOUS SOLUTION CONTAINING BLOCK COPOLYMER AND PREPARATION OF THE SAME

PROBLEM TO BE SOLVED: To provide an aqueous solution containing a block copolymer with a controlled molecular weight distribution. SOLUTION: During the preparation process of a block copolymer from a polymer (A), which is prepared by living radical polymerization of at least one kind of monomers and...

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Hauptverfasser: ETO AKINORI, ITO SOTA
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 ETO AKINORI
ITO SOTA
description PROBLEM TO BE SOLVED: To provide an aqueous solution containing a block copolymer with a controlled molecular weight distribution. SOLUTION: During the preparation process of a block copolymer from a polymer (A), which is prepared by living radical polymerization of at least one kind of monomers and more than one kind of monomers (B) in an aqueous solution, the polymer (A) is added continuously or intermittently to the polymerization reaction solution to polymerize the polymer and the monomer (B). The process can control the molecular weight and prepare block copolymers having continuously or discontinuously varied molecular weights and meets various kinds of requirements at the same time. COPYRIGHT: (C)2005,JPO&NCIPI
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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 AQUEOUS SOLUTION CONTAINING BLOCK COPOLYMER AND PREPARATION OF THE SAME
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