Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1977-10-17
1979-11-27
Cockeram, H. S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
252182, 521123, 521125, 521137, 521904, 521914, C08G 1824, C08G 1822, C08G 1863, C09K 300
Patent
active
041762185
ABSTRACT:
A flexible, highly resilient, cold-cure, closed-mold polyurethane foam can be produced by reacting a foamable mixture comprising an organic polyisocyanate, water and a polyol. The foams of the invention are preferably prepared from a mixture of a hydroxyl-terminated graft copolymer and a hydroxyl-terminated polyoxyalkylene polyether in the presence of a co-catalyst mixture of at least one tertiary amine catalyst and at least one metal-containing basic catalyst. Said catalyst is selected from the group consisting of an alkali metal hydroxide, an alkaline earth metal hydroxide, an inorganic basic salt thereof derived from the reaction of said hydroxides with a weak inorganic acid, a metal organic basic salt catalyst derived from the reaction of at least one of said hydroxides with an organic acid and mixtures thereof. Useful metal organic catalysts are selected from the group consisting of the alkali and alkaline earth metal carboxylates, alkoxides and phenates. Useful inorganic basic metal salt catalysts are sodium bicarbonate and sodium carbonate.
REFERENCES:
patent: 3108975 (1963-10-01), Lambert et al.
patent: 3112281 (1963-11-01), Gromacki et al.
patent: 3336242 (1967-08-01), Hampson et al.
patent: 3803064 (1974-04-01), Fishbein
patent: 3823201 (1974-07-01), Pizzini et al.
patent: 3943075 (1976-03-01), Fishbein
patent: 4025466 (1977-05-01), Jourquin
patent: 4026837 (1977-05-01), Zimmerman
Demou John G.
Pray Edward R.
BASF Wyandotte Corporation
Cockeram H. S.
Dunn Robert E.
Michaels Joseph D.
Pierce Andrew E.
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