LOW-DENSITY RRIM HAVING IMPROVED COEFFICIENT OF LINEAR THERMAL EXPANSION AND HEAT DEFLECTION PROPERTIES

The invention pertains to a low weight, low density rigid polyurethane-polyurea reinforced reaction injection molded (RRIM) part having flaked glass, reinforcin g fibers dispersed throughout a matrix made by reacting polyisocyanates with a resin containing hydroxy group tertiary amine polyether poly...

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Bibliographische Detailangaben
1. Verfasser:	BROWN, BARI W
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention pertains to a low weight, low density rigid polyurethane-polyurea reinforced reaction injection molded (RRIM) part having flaked glass, reinforcin g fibers dispersed throughout a matrix made by reacting polyisocyanates with a resin containing hydroxy group tertiary amine polyether polyols, a blowing agent, and optionally surfactants, chain extenders, and urethane promoting catalysts. The low density RRIM part using flaked glass and the tertiary amine polyether polyols is a low cost alternative to glass fiber reinforced low density parts and the part exhibi ts a relatively low coefficient of linear thermal expansion and relatively high tempe rature deflection properties as compared to other known fillers.