VINYL RESIN PRODUCTION METHOD

Title:

VINYL RESIN PRODUCTION METHOD

Document Type and Number:

WIPO Patent Application WO/2015/156311

Kind Code:

A1

Abstract:

Provided is a vinyl resin production method in which a dispersion stabilizer comprises: an aqueous emulsion (a) that is obtained by dispersing a polymer (A) that comprises an ethylenically unsaturated monomer unit in an aqueous medium; a PVA (B) that has a saponification degree of 65 mol% or more but less than 82 mol% and a viscosity-average degree of polymerization of 250 or more but less than 1,500; and a PVA (C) that has a saponification degree of 82 mol% or more but less than 98 mol% and a viscosity-average degree of polymerization of 1,500 or more but less than 4,000. The dispersion stabilizer comprises 7-51 mass% of the polymer (A), 40-84 mass% of the PVA (B), and 9-53 mass% of the PVA (C) with respect to the total amount of the polymer (A), the PVA (B), and the PVA (C). The use of this dispersion agent makes it possible to obtain a vinyl resin that meets the performance requirements thereof.

Inventors:

FUKUHARA TADAHITO (JP)
KUMAKI YOSUKE (JP)
MICHEL SAMUEL (DE)
HARTMANN DIRK (DE)

Application Number:

PCT/JP2015/060958

Publication Date:

October 15, 2015

Filing Date:

April 08, 2015

Export Citation:

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Assignee:

KURARAY CO (JP)
KURARAY EUROPE GMBH (DE)

International Classes:

C08F2/20; C08F14/00

Foreign References:

JP2005281680A	2005-10-13
JP2008202034A	2008-09-04
JPH0364302A	1991-03-19
JPH10101737A	1998-04-21
JP2005082665A	2005-03-31

Other References: