Toshio Okuhara

US Patent:

6479559, Nov 12, 2002

Filed:

Feb 26, 2002

Appl. No.:

10/082138

Inventors:

Atsushi Takai - Kobe, JP
Toshio Okuhara - Houston TX
Kazumasa Yamane - Kakogawa, JP

Assignee:

Kaneka Corporation - Osaka

International Classification:

C08J 9236

US Classification:

521 54, 521134, 521145, 521150

Abstract:

There is obtained a chlorinated vinyl chloride resin composition from which a siding molded article having good appearance and excellent heat resistance, impact resistance and weatherability is obtained. A chlorinated vinyl chloride resin composition for siding extrusion molding is obtained and a siding molded article is prepared therefrom, said chlorinated vinyl chloride resin composition comprising 100 parts by weight of a chlorinated vinyl chloride resin and 3 to 20 parts by weight of an acrylic graft rubber copolymer, wherein the acrylic graft rubber copolymer contains 30 to 90% by weight of acrylic hollow rubber particles whose average void ratio is 3 to 90% by volume in a latex state.

US Patent:

20020147246, Oct 10, 2002

Filed:

Dec 28, 2001

Appl. No.:

10/028923

Inventors:

Atsushi Takai - Kobe-shi, JP
Toshio Okuhara - Houston TX, US
Kazumasa Yamane - Kakogawa-shi, JP

International Classification:

C08J009/36
C08J003/00

US Classification:

521/053000, 521/054000, 521/055000

Abstract:

There is obtained a chlorinated vinyl chloride resin composition from which a siding molded article having good appearance and excellent heat resistance, impact resistance and weatherability is obtained. A chlorinated vinyl chloride resin composition for siding extrusion molding is obtained and a siding molded article is prepared therefrom, said chlorinated vinyl chloride resin composition comprising 100 parts by weight of a chlorinated vinyl chloride resin and 3 to 20 parts by weight of an acrylic graft rubber copolymer, wherein the acrylic graft rubber copolymer has a glass transition temperature of at most 0 C. and contains 30 to 90% by weight of acrylic hollow rubber particles whose average void ratio is 3 to 90% by volume in a latex state.