Polyether polyol for foam applications

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 65/08 (2006.01) C08G 18/40 (2006.01) C08G 18/48 (2006.01) C08G 65/10 (2006.01) C08G 65/26 (2006.01)

Patent

CA 2492818

Polyols initiated with a first initiator having a relatively high functionality averaging greater than eight and comprising a range of species of different functionality, and optionally a second initiator, having low functionality, i.e. a two to eight nominal functionality initiator molecule. Another aspect of the invention is a process for making the polyol. The invention is also directed to a process for producing polyurethane foam by reacting the polyol of the invention with isocyanates, and the foam produced thereby.

Cette invention a trait à des polyols dont la production est déclenchée par un premier initiateur ayant une moyenne de niveau de fonctionnalité relativement élevée, supérieure à huit, comprenant une plage d'espèces à différents niveaux de fonctionnalité, et, éventuellement, par un second initiateur à faible niveau de fonctionnalité, par exemple, des molécules initiatrices à niveau de fonctionnalité nominale compris entre deux et huit. Un autre volet de l'invention porte sur un procédé de production de ces polyols. L'invention concerne, en outre, un procédé de fabrication de mousse de polyuréthane, produite par réaction des polyols selon l'invention avec des isocyanates, ainsi que la mousse obtenue.

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