Rigid polyurethane foam-forming compositions

Details Rigid polyurethane foam-forming compositions Rigid polyurethane foam-forming compositions

1977-12-27

1979-10-02

Griffin, Ronald W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521107, 521130, 521160, 521175, C08G 1802, C08J 318

Patent

active

041699220

ABSTRACT:
Advantageous rigid polyurethane foam properties (e.g. compressive strength) can be improved and the proportions of polymerization catalyst and/or surfactant needed to provide a given level of such properties can be lowered by preparing such foams from compositions comprising, in addition to the conventional foam-forming reactants including polyisocyanate and polyol, from about 3% to about 10%, based on the weight of the polyol, of a plasticizer selected from essentially halogen-free phosphates and carboxylates containing at least one aryl radical, e.g. isodecyl diphenyl phosphate or butyl benzyl phthalate.

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patent: 2811493 (1957-10-01), Simon et al.
patent: 2936293 (1960-05-01), Orth
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patent: 3143517 (1964-08-01), Heiss
patent: 3284275 (1966-11-01), Nelson
patent: 3577358 (1971-05-01), Santelli et al.
patent: 3772222 (1973-11-01), Steward et al.
patent: 3975316 (1976-08-01), Villa
patent: 3994835 (1976-11-01), Wolf et al.
patent: 4071482 (1978-01-01), Hopkins et al.
Raymond, "New Developments in Urethanes", 4th SPI International Cellular Plastics Conference, Montreal, Canada, Nov., 15-19, 1976, pp. 13-16.

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