Headlamp reflectors for automobile vehicles manufactured by injection molding according to the coinjection process using poly(alkylene terephthalate)
US4617618A · kind A · utility
6Cited by
3References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 2, 1984 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Mar 2, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0083
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a headlamp reflector for an automobile vehicle manufactured by injection molding according to the coinjection process using poly(alkylene terephthalate) having a viscosity number (DIN 16,779) of between 60 and 180 cm.sup.3 /g. It is characterized by the fact that the core contains some 15 to 75% by weight of hematite, at least 75% of the hematite having a particle size less than 70 .mu.m. Good mechanical strength and good behavior in respect of temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.