Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1992-07-16
1993-05-04
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521164, 521170, C08G 1800, C08J 900
Patent
active
052082695
ABSTRACT:
The invention pertains to a low weight, low density rigid polyurethane-polyurea reinforced reaction injection molded (RRIM) part having wollastonite reinforcing fibers dispersed throughout a matrix made by reacting polyisocyanates with a resin containing hydroxy group tertiary amine polyether polyols, a water as a blowing agent, and optionally surfactants, chain extenders, and urethane promoting catalysts. The low density RRIM part using wollastonite and the tertiary amine polyether polyols is a low cost alternative to glass fiber reinforced low density parts, and the part exhibits good mechanical properties and quick demold times.
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BASF Corporation
Carmen Dennis V.
Foelak Morton
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