Imperial Chemical Industries Limited

David J Sparrow

James P Brown

James M Bentley

Guy Frijns

William G Carroll

Ronald N May

Willy Van Autgaerden

Erik M Merckx

The invention relates to a process for producing a polyurea or polyurea/polyurethane compound by reaction of an organic polyisocyanate with a diamine chain extender and an isocyanate-reactive polymer, the latter consisting at least in part, in a polymeric polyamine havng a molecular weight of from 1000 to 16000, containing from 2 to 4 primary amino groups per molecule, and being the condensation product of a polycarboxylic acid or ester with a stoichiometric excess of a polyamine having terminal propoxy groups and a molecular weight of from 500 to 5000.

Process for preparing polyurea and polyurea/polyurethane polymers from

The invention relates to a polymeric polyamine having a molecular weight of from 1000 to 16000 and containing from 2 to 4 primary amino groups per molecule, the polymeric polyamine being the condensation product of a polycarboxylic acid or ester with a stoichiometric excess of a polyamine having terminal aminopropoxy groups and a molecular weight below 500.

Polymeric polyamines

A polyether polyol having an average hydroxyl value in the range 400 to 650 mgKOH/g which is a alkoxylated derivative of a polyhydric alcohol being itself a single compound or a mixture of compounds according to the general formula (I) ##STR1## where R.sup.1 is --H, --CH.sub.3 or OCH.sub.3

Polyether polyols containing hydroxymethyl substituted 1,3-dioxane for

A mold-release agent is provided which consists essentially of 99.9% to 80% by weight of an aromatic polyisocyanate containing at least two isocyanate groups and 0.1% to 20% by weight of a fatty acid ester, e.g., glycerol trioleate, olive oil, peanut oil, etc. A process of using the material by incorporating it in polyurethane foams is disclosed.

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Tervuren, Belgium

David J Sparrow