Precision-moldable abrasion-resistant molding composition...

Details Precision-moldable abrasion-resistant molding composition... Precision-moldable abrasion-resistant molding composition...

C - Chemistry, Metallurgy

08

K

400/4003

C08K 7/12 (2006.01) C08L 67/06 (2006.01)

Patent

CA 1068844

ABSTRACT OF THE DISCLOSURE Mineral-filled thermosetting molding compositions having both precision-molding or low-shrink characteristics and also high abrasion resistance, plus other desirable properties. "Low profile" molding compositions, known to give smooth surface configurations, have low-shrink properties which also give precision molding characteristics of value in mechanically interfitting molded parts, but have such poor abrasion resistance as to be unusable for desirable applica- tions. Both low-shrink and high abrasion resistance are obtained, with other desired properties, by including a known abrasion-improving polyolefin and by using a long-fiber asbestos as the reinforcing fiber, particularly either chrysotile asbestos or that known as blue asbestos or crocidolite.

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