Imperial Chemical Industries Limited

Ici Americas, Inc.

Ici Americas Inc/imperial Chemical Industries Plc

Edward F Cassidy

Malcolm P Hannaby

Herbert R Gillis

Jan Willem Leenslag

Alain Parfondry

Gerhard Jozef Bleys

Eric Huygens

Alan James Hamilton

Herbert R Gillis, Jr

A method for the production of polyurethane elastomers by reacting an isocyanate epolymer having an isocyanate content of from 5 to 10% by weight which is the reaction product of an excessive amount of a polyisocyanate containing at least 85% by weight of 4,4'-diphenylmethane diisocyanate or a variant thereof and a polyether polyol having an average nominal hydroxyl functionality of from 2 to 4, an average hydroxyl equivalent weight of from 500 to 3000, and an oxyethylene content of from 50 to 85% by weight, with an aqueous latex to form a foam, and compressing said foam.

Method for the preparation of polyurethane elastomers

Process for removing unwanted material from wanted material containing water by bringing an isocyanate-containing prepolymer into contact with the materials, allowing the prepolymer to react with the water to form a flexible foam and removing the foam obtained from the wanted material.

Process for removing unwanted material from wanted material

Reaction system for preparing elastomers according to the RIM process, the system comprising an allophanate modified polyisocyanate, a polyol and an aromatic polyamine chain extender. No IMR is necessary.

Reaction system for preparing polyurethane/polyurea

The invention is concerned with an isocyanate-reactive composition comprising a polymer having a molecular weight of at least 500 containing a plurality of groups of the formula: ##STR1## wherein R.sup.1 represents hydrogen or a hydrocarbon radical;

Isocyanate-reactive compositions

An internal mould release composition, suitable for use in the production of moulded articles by the RIM process, comprising:

Internal mould release compositions

Polyurethane/urea foams are derived from prepolymers having branched chain linked isocyanate end groups and components containing isocyanate reactive imino/enamino-functional compounds.

Polyurethane/urea foams from isocyanate prepolymers and isocyanate

An isocyanate-reactive polymer comprising the reaction product of:

Reaction injection molding compositions

A polyisocyanate composition, suitable for use in the production of elastomers by the RIM process, or foams, said composition being the product of reacting an imino-functional or enamine-containing compound having a molecular weight of at least 1000 with a stoichiometric excess of an organic polyisocyanate.

Polysocyanate compositions

A polyisocyanate composition, suitable for use in the production of elastomers by the RIM process, said composition being the product of reacting an alcohol and/or thiol having an average hydroxyl and/or thiol functionality of from about 1.5 to about 4 and an average hydroxyl and/or thiol equivalent weight of at least 500 with at least 2 equivalents, per hydroxyl and/or thiol equivalent, of an organic polyisocyanate under such conditions that at least about 20% of the initially formed urethane and/or thiourethane groups are converted to allophanate and/or thioallophanate groups.

Growing community of inventors

Ukkel, Belgium

Edward F Cassidy