Imperial Chemical Industries Limited

Atlas Europol Spa

Gabriel Verhelst

Louis Muller

Mireille B De Witte

Tu Pham

Alain Parfondry

Giovanni Parrinello

David Thorpe

Julian Francis Hopper

Gian-Carlo Bagaglio

Arun Watts

Philip Cornet

Roberto Frigo

Vabilisetti S Murty

Alfons Bruyninckx

Bleys: Geert

Benoit F De Veubeke

Process for recycling flexible foams by glycolysis and extraction. The glycolysis is conducted by allowing the foam to react with low molecular weight polyols, then allowing the mixture to separate in two phases.

Recycling of flexible foam

A method for the preparation of flexible polymeric foam by reacting a polyisocyanate component with an isocyanate-reactive component comprising at least 50% by weight of water, the polyisocyanate component comprising at least two polyisocyanate compositions, one of them being a low NCO isocyanate terminated prepolymer and the second being a high NCO polyisocyanate.

Manufacture of polymeric foams

Polyisocyanate compositions are provided which comprise the reaction product of a diphenylmethane diisocyanate composition comprising 25 to 70% by weight of 2,4'-diphenylmethane diisocyanate and an isocyanate-reactive polyoxyethylene polyoxypropylene polyahl having an ethylene oxide content of at least 30% by weight, a number average hydroxyl equivalent weight of 700-2000 and an average nominal hydroxyl functionality of 2-6, the reaction product having a free NCO content of 2-31% by weight.

Polyisocyanate compositions and low density flexible polyurethane foams

An isocyanate-reactive composition comprising a first isocyanate-reactive compound and a second isocyanate-reactive compound which is normally immiscible with the first isocyanate-reactive compound and a stabilizing amount of a surfactant compound comprising a carboxylic acid ester or amide carrying a terminal acid group selected from carboxymethyl, sulphate, sulphonate, phosphate and phosphonate, provided that the methyl radical of the carboxymethyl group is not directly attached to a carbon atom of an unsubstituted hydrocarbon chain containing two or more carbon atoms.

Cyanate-reactive compositions

Process for preparing a flexible foam by reacting an isocyanate prepolymer having a free NCO content of 2-15% by weight, an isocyanate prepolymer having a free content of 25-31% by weight and an isocyanate-reactive composition comprising water.

Process for preparing flexible polyurethane foams

A method for preparing a polyurethane/polyurea flexible foam which comprises reacting:

Method for preparing polyurea - polyurethane flexible foams

A continuous process for the preparation of an isocyanate-terminated prepolymer having an NCO content in the range from 2 to 15% by weight, said process comprising the steps of:

Chemical process

An isocyanate-reactive composition comprising:

Isocyanate-reactive compositions

The invention relates to a liquid isocyanate-containing prepolymer composition having an average isocyanate functionality greater than 2 and an NCO content of from 2 to 15% by weight, as obtainable by reacting an isocyanate reactive polymer having an average nominal functionality of from 2 to 6 with a stoichiometric excess of a diphenylmethane diisocyanate composition containing at least 2% by weight of 2,4'-diphenylmethane diisocyanate and having an average isocyanate functionality in the range from 2 to 2.3. The invention also relates to a method for preparing a polyurethane foam, which comprises reacting such a prepolymer composition with water.

Isocyanate composition and process for making flexible foams therefrom

A method to prepare polyurethane and/or polyurea flexible foams which comprises reacting:

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Herent, Belgium

Gabriel Verhelst