Surfactants for incorporating silica aerogel in polyurethane foa

Details Surfactants for incorporating silica aerogel in polyurethane foa Surfactants for incorporating silica aerogel in polyurethane foa

1994-06-28

2000-09-19

Truong, Duc

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 99, 528 48, 528 55, 528 76, 524588, 524589, 524860, 524863, 556450, 556466, C08J 900

Patent

active

061213365

ABSTRACT:
Polyurethane foams prepared using polysiloxane/polyoxyalkylene surfactants, preferably blended with a viscosity modifying agent, particularly in combination with particulate silica, especially silica aerogel, exhibit improved thermal insulating capacity, as measured by K-factor, and improved closed cell content, without increasing the density of the polyurethane foam.

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"Correlation Between Surfactant Performance and Raw Materials in the Formation of Rigid Polyurethane Foams", by H. J. Kollmeier et al., Journal of Cellular Plastics, pp. 255-258, Jul./Aug. 1983.

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