Polyurethane catalyst system additive which permits the use of r

Details Polyurethane catalyst system additive which permits the use of r Polyurethane catalyst system additive which permits the use of r

1982-09-30

1984-07-31

Anderson, Philip E.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

264 455, 26433119, 4284233, 521126, 521127, 521129, 521904, B29D 2700

Patent

active

044630506

ABSTRACT:
A method for making polyurethanes in a mold that is cooler than usual; i.e., at a temperature less than 120.degree. F., is described. Normally, polyurethanes made in relatively "cold" molds contain numerous surface voids. However, N-alkylmorpholines have been discovered to be effective "cold sink" catalyst additives which permit void-free polyurethane formation even in cooler than average molds. The additive should comprise from about 10 to about 30 wt. % of the entire catalyst portion of the polyurethane formulation.

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