Alkoxylated formose polyols and their use in polyurethane plasti

Details Alkoxylated formose polyols and their use in polyurethane plasti Alkoxylated formose polyols and their use in polyurethane plasti

1979-02-26

1981-01-27

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521175, 528 77, 528 79, 568678, 568679, 568680, C08G 1814, C08G 1832, C08G 1848

Patent

active

042476542

ABSTRACT:
The invention is directed to a process for the production of polyether polyols having an average molecular weight of from 200 to 10,000 and an average hydroxyl functionality of from 2.0 to 7.0, comprising reacting one or more alkylene oxides, optionally successively, with a mixture of polyhydric alcohols which has been produced by reduction of the condensation products from the condensation of formaldehyde hydrate. The invention is also directed to the process for the production of polyether polyols characterized in that the mixture of polyhydric alcohols is mixed with dihydric and/or trihydric alcohols and/or monoamines or polyamines prior to alkoxylation. Finally, the invention is directed to the use of the alkoxylated mixtures as the isocyanate-reactive component in the production of optionally cellular polyurethane plastics.

REFERENCES:
patent: 2224910 (1940-12-01), Hanford et al.
patent: 2775621 (1956-12-01), MacLean et al.
patent: 2927918 (1960-03-01), Anderson
patent: 3833669 (1974-09-01), Gehm et al.
patent: 3865806 (1975-02-01), Knodel
Gaylord, Polyethers, Part I, Interscience, N.Y. (1963), pp. 105-106, 197-200.
Schonfeldt, Surface-Active Ethylene Oxide Adducts, Pergamon Press, Oxford (1969), pp. 297, 534, 535 & 565.

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