Imperial Chemical Industries Limited

Karen Liliane Van Der Sande

Martin C Barker

Guy Leon Biesmans

Alain Luc Herssens

Norman Washington Keane

Microvoid polyurethane materials having densities below 300 kg/M.sup.3 and void sizes below 5 micron which are suitable for use as insulating filler in evacuated insulation panels.

Microvoid polyurethane materials

Microvoid polyurethane materials having densities below 300 kg/m.sup.3 and void sizes below 5 micron which are suitable for use as insulating filler in evacuated insulation panels.

Polyol compositions comprising a polyol, an insoluble fluorinated compound and a surfactant composition which is the reaction product of a stoichiometric excess of a polyisocyanate and a polyalkylene glycol monoalkyl ether of formula R--A--OH, wherein R is C.sub.1-25 alkyl and A is a polypropylenoxy chain, optionally containing up to 25% polyethylenoxy units, having a total length of from 4 to 39 units.

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Berg, Belgium

Karen Liliane Van Der Sande