Plastic skin cladded polyurethanes having improved surface appearance
AssigneeThe Dow Chemical Company
InventorLaura B. Weaver
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Abstract
Certain fatty acid amides can be included in plastic skin clad polyurethane formulations to increase adhesion between the plastic skin and the polyurethane. These adhesion improvers can decrease or prevent blister formation in plastic skin clad polyurethanes. Additionally, the adhesion improvers can compatibilize certain extenders with base polyols and improve mold release properties.
Claims20
A plastic skin cladded polyurethane polymer comprising a plastic skin and, adherent thereto, a polyurethane prepared from a formulation including a polyisocyanate, a polyfunctional active hydrogen containing material and an adhesion improver having the general formula:
- ##STR5## wherein R is an aliphatic group having from about 6 to about 24 carbons and X and Y are integers such that 0<X+Y.ltoreq.15 and wherein the adhesion improver is present in an amount effective to prevent blistering.
The plastic skin cladded polyurethane polymer of claim I wherein the adhesion improver is prepared from the hydrolysis products of a tallow, coconut, or soya oil.
A method for preparing a plastic cladded polyurethane comprising applying to a plastic skin a polyurethane prepared from a formulation including a polyisocyanate, a polyfunctional active hydrogen containing material and an adhesion improver having the general formula:
- ##STR6## wherein R is an aliphatic group having from about 6 to about 24 carbons and X and Y are integers such that 0<X+Y.ltoreq.15 and wherein the adhesion improver is present in an amount effective to prevent blistering.
Dependencies are inferred from the claim text.