Heat insulating box

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.

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.

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.

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.