Bayer Corporation

Bayer Aktiengesellschaft

Miles Inc.

Philip E Yeske

Douglas A Wicks

Edward P Squiller

William E Slack

Lyuba K Gindin

E Haakan Jonsson

Kenneth P Yonek

Richard R Roesler

Lutz Schmalstieg

Harald Pielartzik

Robert J Kumpf

Sze-Ming Lee

Arthur W Mason

Peter D Schmitt

Duane B Priddy, Jr

Stanley F Siranovich

Reinhard Halpaap

Markus Mechtel

Stefan Groth

Lanny D Venham

Kristen L Parks

Sharon D Hicks

Rainer Rettig

Erik H Jonsson

Edwin Ray Hortelano

Jane F Ciebien

Mary Ann Wittig

Alexa B Sommer

Gotz Limbeck

A method for making an aliphatic diisocyanate by (a) phosgenating an aliphatic diamine in the presence of an inert solvent or gas to form a crude reaction mixture; (b) distilling the crude reaction mixture to form an aliphatic diisocyanate production stream and an aliphatic diisocyanate waste stream; (c) introducing the aliphatic diisocyanate waste stream to a chamber and placing the waste stream under supercritical fluid conditions sufficient to dissolve an appreciable amount of the aliphatic diisocyanate component in the supercritical fluid; (d) separating the dissolved aliphatic diisocyanate component from the waste stream, wherein the remaining waste stream is a supercritically-purged aliphatic diisocyanate waste stream; (e) lowering the pressure sufficiently to precipitate the aliphatic diisocyanate component.

Method for making aliphatic diisocyanates

Coating compositions containing alkoxysilanes

The present invention relates to compounds containing alkoxysilane and urea groups corresponding to the formula ##STR1## wherein X represents identical or different organic groups which are inert to isocyanate groups below 100.degree. C., provided that at least one of these groups is an alkoxy group,

Compounds containing urea and alkoxysilane groups

The present invention relates to hydroxy-functional polyhydantoin prepolymers corresponding to the formula ##STR1## wherein R represents the residue obtained by removing the isocyanate groups from an organic monomeric diisocyanate, a polyisocyanate adduct or an NCO prepolymer containing hydantoin groups, R.sub.2 represents an organic group which is inert towards isocyanate groups at a temperature of 100.degree. C. or less, R.sub.3 and R.sub.4 may be identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100.degree. C. or less, R.sub.5 represents the hydrocarbon radical obtained by removing the amino and hydroxyl groups from an amino alcohol, n has a value of 1 to 3 and m has a value of 2 to 6. The present invention is also directed to compositions suitable for the production of coatings, adhesives or elastomers containing these polyhydantoin prepolymers in combination with optionally blocked polyisocyanates or aminoplast resins.

Hydroxy-functional polyhydantoin prepolymers and their use in coating

The present invention is directed to a powder coating composition containing as binder

Blocked polyisocyanate crosslinkers for providing improved flow

The present invention relates to compounds containing alkoxysilane and hydantoin groups and corresponding to the formula ##STR1## wherein X represents identical or different organic groups which are inert to isocyanate groups below 100.degree. C., provided that at least one of these groups is an alkoxy group,

Compounds containing alkoxysilane groups and hydantoin groups

The present invention relates to polyisocyanate adducts containing allophanate groups, fluorine and optionally isocyanurate groups that are prepared by reacting compounds a) which

Low surface energy polyisocyanates and their use in one-or two-component

The present invention relates to aqueous dispersions of polyurethanes containing hydantoin groups (calculated as C.sub.3 N.sub.2 O.sub.2, MW 96) in an amount of 1 to 40% by weight, based on resin solids. The present invention also relates to the use of these dispersions for preparing coatings with excellent hydrolytic and thermal stability.

Aqueous polyurethane dispersions and their use for preparing coatings

The present invention relates to heat-curable, cyclic isocyanate addition products

Heat-curable compositions based on cyclic isocyanate addition reproducts

The present invention relates to polyisocyanate adducts containing allophanate groups, siloxane groups and optionally isocyanurate groups that are prepared by reacting compounds a) which

Low surface energy polyisocyanates and their use in one- or

The invention is directed to a process for preparing SRIM molded article. The process broadly requires the use of a fiber reinforcement mat which is placed inside the mold cavity, and then a polyurethane reaction system is injected into the mold. The system comprising a polyisocyanate and a blend of active hydrogen containing compounds requires aldimines as part of the blend of active hydrogen containing compounds.

High heat resistant molded parts produced by structural reaction

Heat-curable compositions based on cyclic isocyanate addition products

The present invention relates to aqueous dispersions of polyureas containing hydantoin groups (calculated as C.sub.3 N.sub.2 O.sub.2, MW 96) in an amount of 1 to 40% by weight, based on resin solids. The present invention also relates to the use of these dispersions for preparing coatings having excellent hydrolytic and thermal stability.

Aqueous polyurea dispersions and their use for preparing coatings with

The present invention is directed to a polyisocyanate mixture

The invention relates to a thermoreversible process for the preparation of a hydantoin comprisng

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Pittsburgh, PA, United States of America

Philip E Yeske