Imperial Chemical Industries Limited

Ici Americas, Inc.

Ici Americas Inc/imperial Chemical Industries Plc

Malcolm P Hannaby

Herbert R Gillis

Alain Parfondry

Edward F Cassidy

Jan Willem Leenslag

Martin C Barker

Eduard F Cassidy

Herbert R Gillis, Jr

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 isocyanate-reactive polymer comprising the reaction product of: (a) an isocyanate-terminated polyurethane prepolymer formed by reacting a polymeric polyol having a hydroxyl equivalent weight of at least 500 with a stoichiometric excess of an organic polyisocyanate, and (b) a stoichiometric excess, relative to the free isocyanate groups present in the prepolymer, of an imino-functional or enamine containing compound having a molecular weight less than about 750. The polymer is useful in reaction injection molding systems as an isocyanate-reactive ingredient.

Isocyanate reactive polymers having imino/enamine functionality

A fire retardant composition comprising a dispersion of a solid fire retardant additive in a liquid isocyanate-reactive compound having a functionality of from 2 to 8 and an average equivalent weight of from about 31 to about 5000 and, as anti-settling agent, an effective amount of a fatty acid ester and/or amide. The composition is useful for preparing polyurethane foams.

Fire retardant compositions comprising dispersion of fire retardant in

A method of making a reaction injection moulded elastomer which includes injecting into a mould cavity a reaction mixture including:

Moulding process

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

Internal mould release compositions

An isocyanate-reactive composition comprising the reaction product of:

Isocyanate reactive 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

Isocyanate-reactive polymers having terminal enamino-functional groups are obtained by reacting ammonia or primary or secondary amines with polymers having terminal .beta.-ketoester groups which are themselves obtained by reaction of polyols with .beta.-ketoesters such as ethyl acetoacetate.

Compositions of matter

Polyurethane/polyurea foams are made by reacting an organic polyisocyanate with resins containing imino/enamino-functional groups in the presence of blowing agents. Control of foam properties is offered by selecting imino/enamino-functional groups which decompose with water at the temperature of the reaction to produce volatile gases.

Polyurethane/urea foams employing imino/enamine functional compounds

Compositions of matter used as reaction systems in RIM processes. Useful for the production of polymeric materials such as molded articles. The articles comprise the product of the reaction of an aromatic isocyanate with an imino-functional isocyanate-reactive composition.

Reaction injection molding compositions

An isocyanate-reactive polymer comprising the reaction product of:

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

Polymers having substituted urea groups, and molded objects therefrom, can be made by reacting, in a reaction injection molding (RIM) process, a composition comprising (A) a polyisocyanate and (B) a mixture comprising an imino functional resin and a chain extender. The chain extender may also be imino functional.

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Louvain, Belgium

Malcolm P Hannaby