Blends of semi-crystalline polyamides and polyesteramides
US5321099A · kind A · utility
12Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1992 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Jan 2, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Blends of (1) a crystalline polyamide derived from 4,4'-diphenylmethane diisocyanate (MDI) and a dicarboxylic acid and (2) a segmented polyesteramide derived from (a) MDI, (b) a carboxylic acid-terminated polyester prepolymer, a carboxylic acid-terminated polyether prepolymer or a carboxylic acid-terminated polycarbonate prepolymer and (c) from 0 to 10 moles of a dicarboxylic acid per mole of prepolymer, exhibit increased tensile ductility and are useful in the manufacture of headlamp reflectors, electrical connectors, molded circuit boards and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.