Polyols, use and method of preparation

Details Polyols, use and method of preparation Polyols, use and method of preparation

1988-11-01

1990-07-24

Cashion, Jr., Merrell C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 11, 536126, 521163, 521167, C07H 310, C08B 11145, C08B 11155, C08G 1812

Patent

active

049436490

ABSTRACT:
Alkoxylated polyols are prepared by dispersing a nitrogen-containing material, such as urea, into a dispersing media comprised of a polyether or polyester polyol and a chemical moiety capable of being alkoxylated, such as a carbohydrate, i.e. whey permeate or sucrose, lactose, etc., and reacting the resultant dispersion with a C.sub.2 -C.sub.6 epoxide to form an alkoxylated polyol having a hydroxyl number below about 600. In certain embodiments, up to about 25% by weight of a urea material can be incorporated within the alkoxylated polyol for improved flame retardancy in the polyurethane/polyisocyanate/polyisocyanurate foams produced therefrom.

REFERENCES:
patent: 3420787 (1969-01-01), Reymore
patent: 3629162 (1971-12-01), Richardson et al.
patent: 3658731 (1972-04-01), Richardson et al.
patent: 3717597 (1973-02-01), Hesskamp
patent: 4154931 (1979-05-01), Richter
patent: 4305858 (1981-12-01), Reischl
patent: 4310448 (1982-01-01), Reischl
patent: 4459397 (1984-07-01), Richardson et al.
patent: 4569952 (1986-02-01), Radovich et al.
patent: 4714717 (1987-12-01), Londrigan et al.
patent: 4795763 (1989-01-01), Gluck et al.

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