Claims
- 1. A reaction injection molding process for preparing a molded product comprising reacting
- (a) an organic polyisocyanate with a mixture consisting essentially of
- (b) one or more compounds containing at least two isocyanate-reactive groups;
- (c) 2 to 20% by weight, based on the weight of the molded product, of rigid fibers having a diameter of from 7 to 10 micrometers and a length ranging from the diameter of a fiber up to 2 millimeters;
- (d) optionally, an inert gas dissolved in component (b)in an amount sufficient to produce a molded product having a density of at least 0.80 g/cm.sup.3 ;
- (e) 0 to 15% by weight, based upon the weight of the molded product, of a filler other than rigid fibers added to component (b); and
- (f) optionally, a mold release agent.
- 2. The process according to claim 1 wherein said rigid fibers are milled glass fibers.
- 3. A process according to claim 2 wherein the mold release agent contains zinc stearate.
- 4. A process according to claim 2 wherein the milled glass fibers have a diameter of 7 to 8 micrometers.
- 5. A process according to claim 2 wherein the milled glass fibers have a diameter of 7.5 micrometers.
- 6. A process according to claim 2 wherein the milled glass fibers are present in an amount of from 4 to 8% by weight, based upon the amount of the molded product.
- 7. A process according to claim 2 wherein the inert gas is air and/or nitrogen gas.
- 8. A process according to claim 2 wherein the inert gas is dissolved in component (b) in an amount sufficient to produce a molded product having a density of 0.85 to 1.10 g/cm.sup.3.
- 9. A process according to claim 2 wherein filler (e) is used in an amount of from 1 to 10% by weight based upon the weight of the molded product.
- 10. A process according to claim 2 wherein filler (e) is selected from the group consisting of rigid microspheres, compressible microspheres, mica, wollastonite, carbon black, talc, calcium carbonate, and carbon fibers.
Parent Case Info
This application is a continuation of application Ser. No. 08/123,318 filed Sep. 17, 1994, now abandoned.
US Referenced Citations (12)
Non-Patent Literature Citations (1)
Entry |
S. H. Metger, Jr. & K. Seel, "High Modulus Rim Elastomers for Automotive Exterior Body Panels", J. Cellular Plastics, 268-273 (1981). |
Continuations (1)
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Number |
Date |
Country |
Parent |
123318 |
Sep 1993 |
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