Foamed polymer and process for production thereof

Details Foamed polymer and process for production thereof Foamed polymer and process for production thereof

1995-01-30

1997-09-16

Gorr, Rachel

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 49, 521 99, 521155, 4289033, C08G 1800

Patent

active

056681895

ABSTRACT:
A foamed isocyanate-based polymer containing a filler material, the filler material being present at a level greater than 30% by weight of the polymer and having a specific gravity of less than about 2.0 with the provisio that the filler material is not melamine. A process for producing the a foamed isocyanate-based polymer is also disclosed. The process comprises the steps of: providing a first mixture comprising water, a catalyst and a substantially inert filler material, the filler material being wetted by the water and the catalyst; providing a second mixture comprising an isocyanate and an active hydrogen-containing compound; mixing the first mixture and the second mixture to provide a reaction mixture; allowing the reaction mixture to expand to produce the foamed isocyanate-based polymer.

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