Back to results
US 2003/0153635 A1Published application
Process for making cellular composites using polymeric isocyanates as binders for hollow filler particles
AssigneeBayer MaterialScience AG
InventorsKieth G. Spitler, David D. Steppan, Howard S. Duff
Life of this patent
Estimating the term…
Abstract
The present invention relates to a process for the production of a cellular composite, and to the resultant cellular composites. This process comprising (A) preparing a mixture of a polyisocyanate, water, and, optionally, one or more additives; (B) adding this mixture under low shear mixing to inorganic hollow microspheres; (C) completely filling a mold with the mixture; and (D) heating the mold containing the mixture to a temperature of from 100 to 280° C., thereby forming the composite.
Claims9
A process for the production of a cellular composite comprising:
- (A) preparing a mixture of (1) a polyisocyanate and (2) water;
- (B) adding the mixture formed in (A) to (3) inorganic hollow microspheres under low shear mixing;
- (C) completely filling a mold with the mixture formed in (B);
- and
- (D) heating the filled mold at a temperature of from 100 to 280° C.;
- thereby reacting the polyisocyanate and water to form a polyurea which binds the hollow microspheres, thus forming a cellular composite.
3 more elements
Dependencies are inferred from the claim text.