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US 4,225,678 AGranted
Foamed polyurethane materials with a bitumen and a hydroxy fatty oil
AssigneeGeorge F. Thagard, Jr.
InventorSantanu Roy
Life of this patent
Estimating the term…
Abstract
A process for manufacturing a foamed polymeric material from starting materials which include a bitumen and a hydroxy fatty oil is disclosed. In addition to the process itself, certain final products of the process are claimed.
Claims17
A process for manufacturing a polymeric foam comprising the step of combining the following ingredients:
- (a) an intermediate reactant prepared by heating a mixture of a bitumen and a hydroxy fatty oil to a temperature substantially above room temperature and maintaining the mixture at such a temperature for a time sufficient to enable significant fractions of the bitumen and the hydroxy fatty oil to react;
- (b) a polyhydroxy compound;
- (c) a polyisocyanate;
- and
- (d) a gas-generating agent
- to form a polymeric foam.
3 more elements
A process for manufacturing a polymeric foam comprising the step of combining the following ingredients:
- (a) an intermediate reactant prepared by heating a mixture comprising a bitumen and a hydroxy fatty oil to a temperature substantially above room temperature and maintaining the mixture at such a temperature for a time sufficient to enable significant fractions of the bitumen and the hydroxy fatty oil to react;
- (b) a polyhydroxy compound;
- (c) a polyisocyanate;
- and
- (d) a gas-generating agent
- to form a polymeric foam.
3 more elements
Dependencies are inferred from the claim text.