Process for producing polyurethane foam
AssigneeKao Corporation
InventorsKazunari Takemura, Kenichi Miyamoto, Minoru Sawai, Masahiro Mori
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Abstract
A process for producing a polyurethane foam which comprises mixing a polyol solution comprising 100 parts by weight of a polyester-polyol, 0.1 to 1.8 parts by weight of water and 0.1 to 5 parts by weight of urea, and a catalyst with a polyisocyanate compound and foaming the mixture. According to the process, there can be produced a polyurethane foam which satisfies both productivity and moldability even when having a low density, and is suitable for use in shoe soles.
Claims9
A process for producing a polyurethane foam comprising mixing a polyol solution comprising a polyester-polyol, 0.1 to 1.8 parts by weight of water and 0.1 to 5 parts by weight of urea based on 100 parts by weight of the polyester-polyol, and a catalyst, with a polyisocyanate compound and foaming the mixture.
A process for producing a polyurethane foam comprising mixing a polyol solution comprising a polyester-polyol, 0.1 to 1.8 parts by weight of water and 0.1 to 5 parts by weight of urea based on 100 parts by weight of the polyester-polyol, and a catalyst, with a polyisocyanate compound and foaming the mixture, wherein the density of the polyurethane foam is 0.15 to 0.45 g/cm3.
Dependencies are inferred from the claim text.