Claims
- 1. A heat insulating box comprising:
- a heat insulator comprising a urethane foam; and
- a box member that is in contact with said heat insulator, characterized in that either CHCl.sub.2 CF.sub.3 or CH.sub.3 CCl.sub.2 F or both are used as a foaming agent of the urethane foam, and the box member is formed of an acrylonitrile/ethylene-.varies.-olefinic rubbery polymer/styrene resin (an A/epdm/S resin);
- wherein said acrylonitrile/ethylene-.varies.-olefinic rubbery polymer/styrene resin comprises an ethylene-.varies.-olefinic rubbery polymer phase and an acrylonitrile-styrene copolymer phase, said acrylonitrile/ethylene-.varies.-olefinic rubbery polymer/styrene resin includes 10-35 wt % ethylene-.varies.-olefinic rubbery polymer, and said acrylonitrile-styrene copolymer phase includes 25-50 wt % acrylonitrile.
- 2. The heat insulating box as recited in claim 1, wherein said ethylene-.alpha.-olefinic rubbery polymer comprises an ethylene-propylene copolymer or an ethylene-propylene-nonconjugated diene terpolymer.
- 3. A heat insulating box comprising:
- a heat insulator comprising a urethane foam; and
- a box member that is in contact with said heat insulator, characterized in that either CHCl.sub.2 CF.sub.3 or CH.sub.3 CCl.sub.2 F or both are used as a foaming agent of the urethane foam, and the box member is formed of a resin composition comprising an acrylonitrile/ethylene-.varies.-olefinic rubbery polymer/styrene resin (A/epdm/S resin) and an acrylonitrile/alkyl acrylate ester rubbery polymer/styrene resin (ASA resin),
- wherein said resin composition includes 10-35 wt % ethylene-.varies.-olefinic rubbery polymer and 5-30 wt % alkyl acrylate ester rubbery polymer, and includes an acrylonitrile-styrene copolymer having 25-50 wt % acrylonitrile in the copolymer, said resin composition including a total amount of said ethylene-.varies.-olefinic rubbery polymer and said alkyl acrylate ester rubbery polymer of 15-40 wt % based on the weight of the resin composition.
- 4. The heat insulating box as recited in claim 3, wherein said ethylene-.alpha.-olefinic rubbery polymer comprises an ethylene-propylene copolymer or an ethylene-propylene-nonconjugated diene terpolymer.
- 5. The heat insulating box as recited in claim 3, wherein said alkyl acrylate ester rubbery polymer comprises a rubbery polymer prepared by copolymerizing at least one monomeric acrylic acid ester having C.sub.1-16 alkyl groups with a polymerizable monomer selected from the group consisting of a crosslinking agent and a grafting agent.
- 6. The heat insulating box as recited in claim 5, wherein said monomeric acrylic acid ester is selected from the group consisting of methyl acrylate, ethyl acrylate, butyl acrylate, and 2-ethylhexyl acrylate.
- 7. A heat insulating box comprising:
- a heat insulator comprising a urethane foam; and
- a box member that is in contact with said heat insulator, characterized in that either CHCl.sub.2 CF.sub.3 or CH.sub.3 CCl.sub.2 F or both are used as a foaming agent of the urethane foam, and the box member consists essentially of an acrylonitrile/ethylene-.varies.-olefinic rubbery polymer/styrene resin (an A/epdm/S resin);
- wherein said acrylonitrile/ethylene-.varies.-olefinic rubbery polymer/styrene resin comprises an ethylene-.varies.-olefinic rubbery polymer phase and an acrylonitrile-styrene copolymer phase, said acrylonitrile/ethylene-.varies.-olefinic rubbery polymer/styrene resin includes 10-35 wt % ethylene-.varies.-olefinic rubbery polymer, and said acrylonitrile-styrene copolymer phase includes 25-50 wt % acrylonitrile.
- 8. A heat insulating box comprising:
- a heat insulator comprising a urethane foam; and
- a box member that is in contact with said heat insulator, characterized in that either CHCl.sub.2 CF.sub.3 or CH.sub.3 CCl.sub.2 F or both are used as a foaming agent of the urethane foam, and the box member consists essentially of a resin composition comprising an acrylonitrile/ethylene-.varies.-olefinic rubbery polymer/styrene resin (A/epdm/S resin) and an acrylonitrile/alkyl acrylate ester rubbery polymer/styrene resin (ASA resin),
- wherein said resin composition includes 10-35 wt % ethylene-.varies.-olefinic rubbery polymer and 5-30 wt % alkyl acrylate ester rubbery polymer, and includes an acrylonitrile-styrene copolymer having 25-50 wt % acrylonitrile in the copolymer, said resin composition including a total amount of said ethylene-.varies.-olefinic rubbery polymer and said alkyl acrylate ester rubbery polymer of 15-40 wt % based on the weight of the resin composition.
- 9. A heat insulating box comprising:
- a heat insulator comprising a urethane foam; and
- a box member that is in contact with said heat insulator, characterized in that either CHCl.sub.2 CF.sub.3 or CH.sub.3 CCl.sub.2 F or both are used as a foaming agent of the urethane foam, and the box member consists essentially of a resin composition comprising an acrylonitrile/alkyl acrylate ester rubbery polymer/styrene resin (ASA resin) and an acrylonitrile/butadiene/styrene resin (ABS resin) comprising a rubber component and a glassy polymer,
- wherein said acrylonitrile/alkyl acrylate ester rubbery polymer/styrene resin includes 5-50 wt % alkyl acrylate ester rubbery polymer, and said resin composition includes at least 5 wt % acrylonitrile/alkyl acrylate ester rubbery polymer/styrene resin.
Priority Claims (3)
Number |
Date |
Country |
Kind |
4-28034 |
Feb 1992 |
JPX |
|
4-203416 |
Jul 1992 |
JPX |
|
4-295546 |
Nov 1992 |
JPX |
|
REFERENCE TO RELATED APPLICATION
This application is a continuing application of Applicants' United States application Ser. No. 08/016,109, filed Feb. 10, 1993, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5229457 |
Kamoshita et al. |
Jul 1993 |
|
5248546 |
Greenlee |
Sep 1993 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
16109 |
Feb 1993 |
|