Process for the production of reinforced moldings and the...

Details Process for the production of reinforced moldings and the... Process for the production of reinforced moldings and the...

B - Operations, Transporting

29

C

B29C 45/00 (2006.01) C08J 9/30 (2006.01) C08J 9/32 (2006.01) C08J 9/35 (2006.01) C08L 75/04 (2006.01) B29C 67/14 (1990.01)

Patent

CA 2113502

It has been found that the use of specific expanded organic microspheres greatly improve the RIM process by (i) significantly enhancing the blowing action of air and/or nitrogen, (ii) providing for uniform density of the molded part, (iii) allowing for the reduction of internal mold pressures, (iv) substantially eliminating surface defects, (v) allowing for a significant reduction in density in the molded product, (vi) allowing for a substantial increase in the amount of air and/or nitrogen that can be dissolved in the isocyanate-reactive component, and (vii) significantly reducing shrinkage in the molded part.

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