公开(公告)号：AU5265090A

公开(公告)日：1990-10-22

申请号：AU5265090

申请日：1990-03-20

Applicant: MATSUSHITA REFRIGERATION COMPANY

Inventor： UEKADO KAZUTAKA ,  NAKAMOTO HIDEO

IPC: C08J9/00 ,  C08J9/02 ,  C08J9/14 ,  C08L75/04 ,  C08K9/06

Abstract: This invention relates to an expanded heat-insulating material containing a reduced amount of a fluorocarbon blowing agent for use in a freezer, refrigerator or the like. It is produced by stirring a mixture of a carbon dioxide adsorbent having a hydrophobic surface, a premix component containing water, and an isocyanate component. According to the expanded heat-insulating material thus produced, the amount of the fluorocarbon blowing agent to be used can be reduced since water is used as the blowing agent, while carbon dioxide generated by the reaction of the isocyanate with the water can be removed after foaming by adsorption with the carbon dioxide adsorbent, and the gas present in the bubbles becomes enriched with the fluorocarbon gas.

公开(公告)号：AU2002258258B2

公开(公告)日：2005-03-10

申请号：AU2002258258

申请日：2002-05-31

Applicant: MATSUSHITA REFRIGERATION COMPANY

Inventor： NAKANO AKIRA ,  OHASHI YOSHIKI ,  UEKADO KAZUTAKA ,  SASKI MASATO

IPC: F25D23/06 ,  F25D023/06

Abstract: An insulation box unit and a refrigerator of the present invention employs i) rigid urethane foam with a 8.0 MPa-or-greater bending modulus, and a 60 kg/m -or-lower density, and ii) a vacuum insulation material. The proper bending modulus provides the insulation box unit with a substantial strength, even in the case that the coverage of the vacuum insulation material with respect to the surface of the outer box exceeds 40%. The proper density prevents the insulation box unit from poor insulation efficiency due to undesired solid thermal conductivity. Despite of an extended use of the vacuum insulation material, the insulation box unit offers an excellent insulation efficiency and therefore accelerates energy saving. According to the recycling method of the present invention, rigid urethane foam formed of tolylene di-isocyanate composition, which was separated from refrigerator wastes, is recycled as a material of rigid urethane foam.