Bayer Corporation

Miles Inc.

Mobay Chemical Corporation

Gm Global Technolgoy Operations, Inc.

Mobay Corporation

Robert M Loring

Neil H Nodelman

Albert Magnotta

William A Ludwico

William E Slack

David D Steppan

Robson M Mafoti

John E Dewhurst

Jan L Clatty

Richard E Keegan

Mark E Cekoric

George Ferber

Gregory D Williams

John W Arnold

Majid Daneshvar

Steven M Conover

Michael F Palmosina, Ii

Increases in reactivity of acidic containing RIM systems are reduced by inclusion of a catalyst system of a zinc-containing compound, a non-zinc containing metal compound and a tertiary amine.

Catalyst package for use in RIM systems containing acidic additives

The present invention is directed to polyurethane moldings produced via the RIM process. These polyurethane moldings have excellent reactivity, demold properties (at a 30 s demold), and good elongation and tear strength, and comprise the reaction product of an aliphatic polyisocyanate having a viscosity of less than about 20,000 mPa.multidot.s at 25.degree. C. and a NCO functionality of 2.3 to 4.0 with an isocyanatereactive component comprising b1) a relatively high molecular weight organic compound containing at least one of the groups selected from the group consisting of hydroxy groups and amine groups; and b2) a low molecular weight chain extender selected from the group consisting of diols, triols, primary amines, secondary amines, aminoalcohols, and mixtures thereof; in the presence of a catalyst. The OH:NH ratio of the chain extender is from 1:1 to 25:1.

Aliphatic rim elastomers

The present invention relates to a process for preparing polyurea-polyurethane elastomers comprising reacting in a closed mold, in accordance with the reaction injection molding technique at an isocyanate index of about 95 to about 110, an isocyanate prepolymer having an isocyanate content of about 5 wt. % to 10 wt. % and a molecular weight range of about 1000 to 4000 with a diamine chain extender having no isocyanate-reactive groups other than amino groups in the substantial absence of compounds having isocyanate-reactive groups other than amino groups. The present invention further relates to the polyureapolyurethane elastomers produced by the process of this invention.

Process for the preparation of polyurea-polyurethane elastomers

Homogeneous storable mixtures containing small quantities of a potassium halide, having a high mixed hydroxyl number or mixed hydroxyl/amine number and an average functionality of at least 2.0 are made by mixing (a) a polyoxyalkylene polyol and/or polyolamine and/or polyamine based on an alkyloxirane having a molecular weight of from 400 to 12,000 and (b) a low molecular weight polyol which is not completely miscible with (a) wherein these mixtures are reacted with a prepolymer or a polyisocyanate to produce shrink stable thermal break urethanes having good adhesion to substrate properties and wherein the use of such mixtures increases processing flexibility without detrimentally affecting the physical properties of the thermal break urethanes produced.

Thermal break systems

The present invention is directed to an internal mold release agent, a composition containing the mold release agent, and a method of using such agent. The mold release broadly comprises zinc oleate or zinc laurate and a specific fatty amine derivative.

Internal mold release agent for use in molding polyurethanes and/or

The instant invention is directed to a process for the production of microcellular elastomeric moldings comprising:

Process for the production of microcellular elastomeric moldings and the

The instant invention is directed to novel mold release agents for polyurethane resins and to the use thereof, particularly in the closed mold forming of polyurethane foams. The mold release agents disclosed herein are applied to the surface of the mold prior to molding and broadly comprise talc dispersed in an emulsion of water and an organic solvent.

Talc-based external mold release agent for polyurethane foams

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Library, PA, United States of America

Robert M Loring