Process for producing polyurethane foams using foam modifiers

Details Process for producing polyurethane foams using foam modifiers Process for producing polyurethane foams using foam modifiers

1985-10-25

1987-08-11

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521 99, 521106, 521111, 521114, 521123, 521125, C08G 1814

Patent

active

046862404

ABSTRACT:
This invention relates to a process for producing water-blown, flexible polyurethane foams for improved foam stability and molded water-blown, flexible polyurethane foams that are rapidly demoldable with improved green strength. The process involves the use of certain compounds ("foam modifiers") as hereinafter more specifically defined. The foam modifiers consist of an alkali metal or alkaline earth metal ion and an anion of a Bronsted acid having a pKa of greater than 1 (other than: (a) an inorganic alkaline earth metal salt that has a water solubility of less than one gram of salt per 100 milliliters of water at 25.degree. C., (b) alkali metal dihydrogen phosphate and (c) alkali metal sulphate).

REFERENCES:
patent: 3560544 (1971-02-01), Haluska
patent: 3804782 (1974-04-01), Demou et al.
patent: 4336341 (1982-06-01), Fujwara et al.
patent: 4468478 (1984-08-01), Dexheimer et al.
patent: 4469820 (1983-09-01), Dexheimer et al.
patent: 4478959 (1984-10-01), Bechara et al.
patent: 4546116 (1985-10-01), Muller et al.

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