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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsFumihiro Inagaki, Takashi Hashida, Masa-aki Suzuki, Yoshio Kishimoto, Takayoshi Ueno
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A polyurethane foam is constituted by using a blowing agent selected from the group consisting of iodofluorohydrocarbons, perfluoroalkenes and hydrogen-containing fluoromorpholine derivatives. These blowing agents have a low thermal conductivity and a short life in the air, and thus impose no or very small load such as ozone layer depletion potential (ODP) and global warming potential (GWP) on the environment. The iodofluorohydrocarbon, in particular, can give an incombustibility and self-extinguishing property to the conventionally used inflammable substance such as cyclopentane or the like, and thus is also advantageous from the viewpoint of safety of the thermal insulating material.
A method for producing a thermal insulating foamed material comprising the step of concurrent blowing and molding of a resin raw material composition including a polyol, a polyisocyanate, a catalyst for urethane reaction, a foam stabilizer, and a blowing agent composed of at least one compound selected from the group consisting of in iodofluorohydrocarbons, and hydrogen-containing fluoromorpholine derivatives.
A method for producing a thermal insulating foamed material comprising the step of concurrent blowing and molding of a resin raw material composition including a polyol, polyisocyanate, and a complex compound of an iodofluorohydrocarbon with an amine, an ammonium salt or a quaternary ammonium salt having a non-conjugated bond.
Dependencies are inferred from the claim text.