Abrasion-resistant mineral-filled thermosetting molding composit

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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260 40R, 260836, 260862, C08K 336, C08K 340, C08L 6308, C08L 6706

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active

RE0299545

ABSTRACT:
Mineral-filled thermosetting molding compositions having improved abrasion resistance. The addition of up to 10% polyethylene or other polyolefin greatly improves the abrasion resistance of conventional molding compositions containing 15% to 60% thermosetting resin, 40% to 85% mineral filler of which 50% may be fiberglass or other fibrous reinforcement. The addition is especially applicable with free radical initiated polymers, particularly polyester resins and epoxy-polybutadiene resins, with which it cross links. In some cases flexure strength is also slightly improved.

REFERENCES:
patent: 2518462 (1950-08-01), Gowing et al.
patent: 3256362 (1966-06-01), Craubner et al.
patent: 3291857 (1966-12-01), Howertoh
patent: 3328339 (1967-06-01), Tierney
Bjorksten et al., "Polyesters and their Applications", 1956, p. 73.
Skeist, "Epoxy Resins", Plastics Application Series, Reinhold Publishing Co., 1958, pp. 77 & 78.

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