Process and composition for providing double metal cyanide catal

Details Process and composition for providing double metal cyanide catal Process and composition for providing double metal cyanide catal

1992-08-03

1993-11-30

Kight, III, John

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

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

528403, 528410, 568618, 568620, 568621, C08G 5968, C08G 6504

Patent

active

052666816

ABSTRACT:
The present invention relates to a process for improving the polyurethane-forming reactivity of a propylene oxide-based ethylene oxide-free polyol produced using a double metal cyanide complex catalyst by incorporating therein a minor amount of a base prior to employing the polyol in a polyurethane-forming reaction. Also claimed is the base-containing polyol composition produced in accordance with the present invention.

REFERENCES:
patent: 3829505 (1974-08-01), Herold
patent: 3941849 (1976-03-01), Herold
patent: 4242490 (1980-12-01), Emerson et al.
patent: 4335188 (1982-06-01), Igi et al.
patent: 4472560 (1984-09-01), Kuyper et al.
patent: 4477589 (1984-10-01), van der Hulst et al.
patent: 4877906 (1989-10-01), Harper
Article entitled "Influence of Acids and Bases on Preparation of Urethane Polymers" by H. L. Heiss et al., vol. 51, No. 8, Aug. 1959.
Article entitled "Urethane Polyether Prepolymers and Foams-Influence of Chemical and Physical Variables on Reaction Behavior" by H. G. Scholten et al. vol. 5, No. 3, Jul. 1960.

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