Process for the preparation of filled urethane-based...

Details Process for the preparation of filled urethane-based... Process for the preparation of filled urethane-based...

B - Operations, Transporting

29

C

B29C 45/00 (2006.01) B29C 33/60 (2006.01) B29C 67/24 (2006.01) C08K 7/02 (2006.01) C08K 13/04 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2131048

This invention relates to a reaction injection molding process for preparing a molded product by reaction of a mixture of (a) an organic polyisocyanate; (b) one or more compounds containing at least two isocyanate- reactive groups; (c) about 2 to about 20% by weight, based on the weight of the molded product, of rigid fibers having a diameter of from about 5 to about 10 micrometers and a length ranging from the diameter of the fiber up to about 2 millimeters, preferably in admixture with component (b); and, optionally, (d) an inert gas dissolved in at least one of components (a) or (b) in an amount sufficient to produce a molded product having a density of at least 0.80 g/cm3; and (e) up to 15% by weight, based upon the weight of the molded product, of a filler other than rigid fibers (c).

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