The Quaker Oats Company

Other

Qo Chemicals, Inc.

William J Pentz

David Elmer Vietti

George W Huffman

Joseph P Wuskell

William R Dunlop

The new composition of matter, 2,2'-isopropylidine bis(tetrahydrofuran) and method of preparation.

2,2'-Isopropylidine bis(tetrahydrofuran)

Improved rigid urethane and isocyanurate foam compositions having improved fire resistance are described. The urethane foams are based on furan compositions and are chiefly made from adding propylene oxide to bis(hydroxymethyl)furan.

Chemical compositions and methods

Improved rigid urethane and isocyanurate foam compositions having improved fire resistance are described. The urethane foams are based on furan compositions having the formula: ##STR1## and from about 100% to about 500% of a stoichiometric amount of a reactive polyisocyanate to produce a foamable composition, and sufficient blowing agent to create a foam having a density from about 1.5 to about 5 pounds per cubic foot. The product has improved fire resistence. The disclosure also described the method of decreasing the flame hazard potential of a rigid foam by adding two urethane or isocyanurate foaming ingredients the appropriate amount of one or more of the compositions listed above. The polymers described are chiefly made from adding propelyne oxide to bis (hydroxymethyl) furan.

Polyurethanes or isocyanurates from alkoxylated hydroxymethylfuran

A low fire hazard rigid urethane insulation foam having high compressive strength and low friability is disclosed. Rigid foam products of this invention have a Class I flame hazard rating according to the ASTM E-84 Steiner tunnel test. The urethane foam contains a halogenated base polyol and a modifying amount of a 2,5-bis-(hydroxymethyl) furan component.

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Cary, IL, United States of America

William J Pentz