Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1982-08-10
1984-02-07
Phynes, Lucille M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
521175, 536 183, 536121, 568607, 568608, 568618, 568621, C08G 1848
Patent
active
044304900
ABSTRACT:
Polyether polyols and their method of preparation are disclosed. The polyether polyols are prepared by reacting polyhydric alcohols with an alkylene oxide in the presence of an alkaline catalyst. The reaction mixture is then treated with a hydroxy-carboxylic acid so as to neutralize the alkaline catalyst and form a clear reaction mixture without otherwise removing the alkaline catalyst. The polyether polyols are useful for the production of polyurethane foams.
REFERENCES:
patent: 3000963 (1961-09-01), Speranza
patent: 3153002 (1964-10-01), Wismer et al.
patent: 3299151 (1967-01-01), Wismer et al.
patent: 4110268 (1978-08-01), Longley et al.
Phynes Lucille M.
Pingitore Linda
PPG Industries Inc.
Uhl William J.
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