Flexible urethane foams having a low density and a method for producing said foams
AssigneeBridgestone Tire Company Limited
InventorsToshio Yukuta, Hiroya Fukuda, Seiji Ishii, Kazuo Utsumi
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Abstract
Flexible urethane foams having a low density and capable of preventing spontaneous combustion during production and storage are produced by compounding 5.0-12.0 parts by weight based on 100 parts by weight of polyhydroxylcompounds, of water and not less than 0.1 part by weight of aromatic amine antioxidant, further preferably not less than 0.01 part by weight of phosphorous acid triesters in the usual combination of polyhydroxyl compounds, polyisocyanates, water, catalysts, surfactants, foaming agent and other additives.
Claims10
In a method for producing flexible urethane foams having a low density and capable of preventing spontaneous combustion during production and storage of flexible urethane foams by combining polyhydroxyl compounds, polyisocyanates, water, catalysts, surfactants, foaming agents and other additives, the improvement which comprises using 5.0-12.0 parts by weight of water based on 100 parts by weight of the polyhydroxyl compounds, and not less than 0.1 part by weight of aromatic amine antioxidants.
Flexible urethane foams having a low density obtained by compounding and foaming polyhydroxyl compounds, polyisocyanates, water, catalysts, surfactants, foaming agents and other additives, the improvement which comprises the use of 5.0-12.0 parts by weight of water based on 100 parts by weight of the polyhydroxyl compounds, and not less than 0.1 part by weight of aromatic amine antioxidants in the foams to obtain urethane foams capable of preventing spontaneous combustion during storage.
Dependencies are inferred from the claim text.