Novel oxyalkylated polyol prepolymers, flame retardant interpoly

Details Novel oxyalkylated polyol prepolymers, flame retardant interpoly Novel oxyalkylated polyol prepolymers, flame retardant interpoly

1976-11-26

1978-08-22

Marquis, Melvyn I.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260 293, 260829, 260613B, 528151, 528153, 528159, C08J 900

Patent

active

041088085

ABSTRACT:
Liquid oxyalkylated polyol prepolymers are prepared by oxyalkylating a prepolymer prepared from a hydroxy aromatic compound, an aldehyde and furfuryl alcohol with an alkylene oxide containing about 2-4 carbon atoms. The oxyalkylated polyol prepolymers have a viscosity of 1000-500,000 centipoises at 25.degree. C. and contain about 1.1-6 moles of interpolymerized aldehyde, about 3.1-15 moles of interpolymerized furfuryl alcohol, and about 1-10 moles of interpolymerized alkylene oxide for each mole of interpolymerized hydroxy aromatic compound. The resultant prepolymers are highly reactive and may be further polymerized with or without monomers such as polyisocyanate to produce flame retardant solid or cellular interpolymers. Flame retardant solid or cellular polyurethanes are prepared in one variant by interpolymerizing organic polyisocyanates with the oxyalkylated polyol prepolymers. In another variant, flame retardant closed cell cellular interpolymers are provided. Processes are provided for preparing the aforementioned novel oxyalkylated polyol prepolymers and solid or cellular interpolymers.

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patent: 3919127 (1975-11-01), Larsen et al.
patent: 4016111 (1977-04-01), Wolff et al.

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