Title:
VINYL CHLORIDE-VINYL ACETATE COPOLYMER PARTICLES AND AUTOMOBILE UNDERBODY COATING AGENT
Document Type and Number:
WIPO Patent Application WO/2017/138518
Kind Code:
A1
Abstract:
Provided are: vinyl chloride-vinyl acetate copolymer particles having few changes over time in sol viscosity when kneaded together with a plasticizer and having exceptional mechanical strength when processed at low temperatures; and applications represented by a coating agent, especially an automobile underbody coating, or an automotive sealant. Vinyl chloride-vinyl acetate copolymer particles characterized by comprising a vinyl chloride-vinyl acetate copolymer in which the vinyl acetate residue unit content is continuously distributed within the 0-30 wt% range, there is one maximum value of the distribution, the average degree of polymerization is 1,500-3,000, and the average vinyl acetate residue unit content is 5-15 wt%, the average primary particle size of the vinyl chloride-vinyl acetate copolymer being 1-2 μm.
Inventors:
WATANABE KAZUNORI (JP)
Application Number:
PCT/JP2017/004378
Publication Date:
August 17, 2017
Filing Date:
February 07, 2017
Export Citation:
Assignee:
TOSOH CORP (JP)
International Classes:
C08F214/06; C08F2/26; C08F218/08; C08K5/41; C08L27/06; C08L31/04; C09D5/00; C09D127/06; C09D131/04
Foreign References:
| CN102417556A | 2012-04-18 | |||
| JPS49111990A | 1974-10-24 | |||
| JPS5157792A | 1976-05-20 | |||
| JPH02208307A | 1990-08-17 | |||
| JP2009221335A | 2009-10-01 | |||
| JPS4949039B1 | 1974-12-25 | |||
| CN102807644A | 2012-12-05 |
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