Precision-moldable abrasion-resistant molding composition and mo

Details Precision-moldable abrasion-resistant molding composition and mo Precision-moldable abrasion-resistant molding composition and mo

1975-05-27

1976-10-26

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4217, 260862, C08K 334, C08L 6706

Patent

active

039882918

ABSTRACT:
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 applications. 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.

REFERENCES:
patent: 3397169 (1968-08-01), Wilkinson
patent: 3549586 (1970-12-01), Smith et al.
patent: 3668178 (1972-06-01), Comstock et al.
patent: 3701748 (1972-10-01), Kroekel
patent: 3718714 (1973-02-01), Comstock et al.
patent: 3842142 (1974-10-01), Harpold et al.

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