Title:
HEAT INSULATING BOX
Document Type and Number:
Japanese Patent JP3144935
Kind Code:
B2
Abstract:
PURPOSE: To prevent generation of cracking by forming an resin inner box of a resin composite which is obtained by mixing a graft copolymer of a conjugate diene, an aromatic vinyl and a vinyl cyanide, a copolymer of an aromatic vinyl and a vinyl cyanide, and a poly n-butyl acrylate coated with the above copolymers.
CONSTITUTION: A resin composite which forms an inner box contains a graft copolymer which is obtained by polymerizing a vinyl cyanide compound of 35 to 52wt.%, a vinyl aromatic compound of 48 to 65wt.% and a monomer mixture under existence of a conjugate diene synthetic rubber, and a copolymer of a vinyl cyanide compound of the above percent by weight and a vinyl aromatic compound of the above percent by weight. The resin composite is formed by mixing the above copolymers and a poly n-butyl acrylate coated with a copolymer of the above vinyl cyanide compound and vinyl aromatic compound. Thus it is possible to provide a heat insulating box free of crazing and cracking in spite of a strong chemical attacking quality of urethane heat insulating materials HCFC123 and HCFC141b.
Inventors:
Hiroshi Tsujita
Kazuo Shimahara
Yoshiro Murono
Junichi Nakata
Nobuo Ohashi
Kazuo Shimahara
Yoshiro Murono
Junichi Nakata
Nobuo Ohashi
Application Number:
JP811193A
Publication Date:
March 12, 2001
Filing Date:
January 21, 1993
Export Citation:
Assignee:
Matsushita Cold Machinery Co., Ltd.
International Classes:
C08G18/08; C08G18/00; C08G18/10; C08J9/14; F25D23/06; C08G101/00; (IPC1-7): F25D23/06
Domestic Patent References:
| JP443279A | ||||
| JP493581A | ||||
| JP4184072A | ||||
| JP4240377A | ||||
| JP4189808A | ||||
| JP4158184A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)