PRODUCTION OF VINYL CHLORIDE-BASED POLYMER

Title:

PRODUCTION OF VINYL CHLORIDE-BASED POLYMER

Document Type and Number:

Japanese Patent JP3663500

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a method for producing a vinyl chloride-based polymer having excellent heat stability and low fisheye-generating property.
SOLUTION: In this method for producing a vinyl chloride-based polymer by an aqueous suspension polymerization, (a) a partially saponified polyvinyl alcohol having 65-85 mole % degree of saponification and 400-1000 average degree of polymerization, (b) a partially saponified polyvinyl alcohol having 75-85 mole % degree of saponification and 1500-3000 average degree of polymerization, (c) a partially saponified polyvinyl alcohol having 15-54 mole % degree of saponification and 100-1200 average degree of polymerization and (d) a water soluble cellulose ester are used together as dispersion stabilizers. After finishing the polymerization, 0.01-0.2 pt.wt., based on 100 pts.wt. of the polymer, of the partially sponified polyvinyl alcohol (a) is added in a slurry.

More Like This:

WO/2008/000693	PROCESS FOR THE MANUFACTURE OF 1,2-DICHLOROETHANE
JPH04122703	PRODUCTION OF VINYL CHLORIDE RESIN FOR PASTE TECHNIQUE

Inventors:

Naonori Asada
Furuta Yen
Hiroshi Minemura

Application Number:

JP20099996A

Publication Date:

June 22, 2005

Filing Date:

July 12, 1996

Export Citation:

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Assignee:

Toagosei Co., Ltd.

International Classes:

C08F14/06; C08F2/18; C08F2/20; C08F14/00; (IPC1-7): C08F2/20; C08F14/00

Domestic Patent References:

JP6065309A
JP6211909A

Attorney, Agent or Firm:

Masahiro Koda

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