Polyurethane foams blown only with water

Details Polyurethane foams blown only with water Polyurethane foams blown only with water

1990-04-25

1993-01-05

Kight, III, John

Boot and shoe making

521170, 521174, 521159, 521160, C08G 1800

Patent

active

051771195

ABSTRACT:
A novel polyurethane resin foam composition is provided which is only water-blown and requires no chlorofluorocarbon or other auxiliary blowing agents, yet suffers little or no degradation in physical properties even at reduced isocyanate indexes. The formulation includes a relatively low molecular weight polyethylene glycol along with the conventional polyol to make a blend for the polyol component. The molecular weight range of the polyethylene glycol is from about 200 to about 600. The lower molecular weight polyethylene glycol may range from about 2 to about 10 parts by weight of the polyol, based on the total polyurethane foam composition.

REFERENCES:
patent: 3803064 (1974-04-01), Fishbein et al.
patent: 3857800 (1974-12-01), Fishbein et al.
patent: 3943075 (1976-03-01), Fishbein et al.
patent: 4100116 (1978-07-01), Mazanek et al.
patent: 4256846 (1981-03-01), Ohashi et al.
patent: 4259452 (1981-03-01), Yutuka et al.
patent: 4910231 (1990-03-01), Pham et al.

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