METHOD FOR PRODUCING AQUEOUS ACRYLIC ACID POLYMER SOLUTION AND AQUEOUS ACRYLIC ACID POLYMER SOLUTION

METHOD FOR PRODUCING AQUEOUS ACRYLIC ACID POLYMER SOLUTION AND AQUEOUS ACRYLIC ACID POLYMER SOLUTION

PROBLEM TO BE SOLVED: To provide an aqueous acrylic acid polymer solution with a decreased residual monomer content which can be used for a thermosensitive water gel, a cosmetic additive, a support for sustained-release medicine, and an additive for skin patches, and to provide a method for producin...

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Hauptverfasser: MASUDA SEIJI, AIMIYA RYOICHI
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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 MASUDA SEIJI
AIMIYA RYOICHI
description PROBLEM TO BE SOLVED: To provide an aqueous acrylic acid polymer solution with a decreased residual monomer content which can be used for a thermosensitive water gel, a cosmetic additive, a support for sustained-release medicine, and an additive for skin patches, and to provide a method for producing the aqueous solution. SOLUTION: The method for producing the aqueous acrylic acid polymer solution comprises polymerizing an acrylic monomer or a monomer mixture mainly composed thereof in an aqueous medium using a radical polymerization initiator, then optionally performing an additional catalytic treatment using a radical polymerization initiator, and removing a water soluble organic solvent when the aqueous medium contains the water soluble organic solvent. The aqueous polymer solution produced by the method has a viscosity and a nonvolatile content satisfying formula 1: 5≤[N]≤25 and formula 2: [N]/log[V]≤5 and contains a residual acrylic acid monomer of 7,000 ppm or less based on the nonvolatile matter. COPYRIGHT: (C)2005,JPO&NCIPI
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SOLUTION: The method for producing the aqueous acrylic acid polymer solution comprises polymerizing an acrylic monomer or a monomer mixture mainly composed thereof in an aqueous medium using a radical polymerization initiator, then optionally performing an additional catalytic treatment using a radical polymerization initiator, and removing a water soluble organic solvent when the aqueous medium contains the water soluble organic solvent. The aqueous polymer solution produced by the method has a viscosity and a nonvolatile content satisfying formula 1: 5≤[N]≤25 and formula 2: [N]/log[V]≤5 and contains a residual acrylic acid monomer of 7,000 ppm or less based on the nonvolatile matter. 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SOLUTION: The method for producing the aqueous acrylic acid polymer solution comprises polymerizing an acrylic monomer or a monomer mixture mainly composed thereof in an aqueous medium using a radical polymerization initiator, then optionally performing an additional catalytic treatment using a radical polymerization initiator, and removing a water soluble organic solvent when the aqueous medium contains the water soluble organic solvent. The aqueous polymer solution produced by the method has a viscosity and a nonvolatile content satisfying formula 1: 5≤[N]≤25 and formula 2: [N]/log[V]≤5 and contains a residual acrylic acid monomer of 7,000 ppm or less based on the nonvolatile matter. 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SOLUTION: The method for producing the aqueous acrylic acid polymer solution comprises polymerizing an acrylic monomer or a monomer mixture mainly composed thereof in an aqueous medium using a radical polymerization initiator, then optionally performing an additional catalytic treatment using a radical polymerization initiator, and removing a water soluble organic solvent when the aqueous medium contains the water soluble organic solvent. The aqueous polymer solution produced by the method has a viscosity and a nonvolatile content satisfying formula 1: 5≤[N]≤25 and formula 2: [N]/log[V]≤5 and contains a residual acrylic acid monomer of 7,000 ppm or less based on the nonvolatile matter. COPYRIGHT: (C)2005,JPO&amp;NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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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 FOR PRODUCING AQUEOUS ACRYLIC ACID POLYMER SOLUTION AND AQUEOUS ACRYLIC ACID POLYMER SOLUTION
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