Precision-moldable abrasion-resistant molding composition and moldings
US3988291A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1975 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | May 27, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.