Polyurethanes or isocyanurates from alkoxylated hydroxymethylfuran
AssigneeThe Quaker Oats Company
InventorWilliam J. Pentz
Life of this patent
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Abstract
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.
Claims22
A method of trimerizing a composition which includes a polyfunctional isocyanate component and a polyfunctional polyol composition, said method including adding to said composition from about 0.5% to about 40% by weight of a Mannich diol composition adapted to serve, at least in part, as a trimerizing catalyst for said composition, and having the formula:
- ##STR14## wherein n.sub.a is from 1 to 4, n.sub.b is 1 to 4, and wherein X is a C.sub.1 -C.sub.6 alkyl group and permitting said components to react to from an isocyanurate-containing composition.
A rigid polyurethane foam composition comprising the reaction product of about 100 parts of a chemical compositions consisting essentially of one or more compounds having the formula:
- ##STR15## wherein n.sub.a is from 1 to about 4, wherein n.sub.b is from 1 to about 4, wherein n.sub.c is 1 or 2, wherein n.sub.d is 1 or 2, and wherein ##STR16## and n.sub.e is from 1 to 10;
- ##STR17## and n.sub.f is from 1 to 10;
- ##STR18## where L is lower alkyl or M, and M is ##STR19## and n.sub.g is from 2 to 4;
- or ##STR20## n.sub.g is 2 to 6, and n.sub.h is from 1 to 3, and from about 100% to about 120% of a stoichiometric amount of a reactive polyisocyanate, said composition containing a fluorocarbon material as a blowing agent, and having a density of from 1.5 to about 5 compounds per cubic foot.
A rigid isocyanurate foam composition comprising the reaction product of about 100 parts of a chemical composition consisting essentially of one or more compounds having the formula:
- ##STR27## where n.sub.a is from 1 to about 4, wherein n.sub.b is from 1 to about 4, wherein n.sub.c is 1 or 2, where n.sub.d is 1 or 2, and wherein ##STR28## and n.sub.e is from 1 to 10;
- ##STR29## and n.sub.f is from 1 to 10;
- ##STR30## and L is lower alkyl or M and M is ##STR31## and n.sub.g is from 2 to 4;
- or ##STR32## n.sub.g is 2 to 6, and n.sub.h is from 1 to 3;
- and from at least 120% to about 500% of a stoichiometric amount of a reactive polyisocyanate, said composition containing a fluorocarbon material as a blowing agent, and having a density of from 1.5 to about 5 pounds per cubic foot.
A method of decreasing the flame hazard potential of a rigid urethane or isocyanurate foam composition, said method comprising adding to a urethane- or isocyanurate-forming ingredients a composition consisting essentially of one or more compounds having the formula:
- ##STR39## wherein n.sub.a is from 1 to about 4, wherein n.sub.b is from 1 to about 4, wherein n.sub.c is 1 or 2, wherein n.sub.d is 1 or 2, and wherein ##STR40## and n.sub.e is from 1 to 10;
- ##STR41## and n.sub.f is from 1 to 10;
- ##STR42## where L is lower alkyl or M, and M is ##STR43## and n.sub.g is from 2 to 4;
- or ##STR44## n.sub.g is 2 to 6, and n.sub.h is from 1 to 3, and, utilizing said composition as at least a portion of the polyol component of said composition, permitting the ingredients thereof to react in order to form a modified polyurethane or isocyanurate composition having decreased flame hazard potential.
Dependencies are inferred from the claim text.