Extruded profiles
US4415699A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1981 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Jun 23, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/05
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extruded profiled section characterized in that it has been extruded from a composition comprising a blend of a linear polyamide, a linear polyester containing at least 80% by weight of ethylene terephthalate units and an inorganic fibrous filler wherein the composition contains 5 to 60% by weight of the composition of the filler and the weight ratio of polyamide to polyester is between 1:1 and 49:1, which composition preferably has a melt flow index of not greater than 2 measured according to ASTM-D1238 using a standard die of bore 2.096 mm, length 8 mm and a load of 2.16 kg at a temperature of 285.degree. C. A preferred composition for preparing the extruded profiled section comprises a blend in which the polyamide contains an excess of terminal amino groups, and preferably at least 20 g equivalents of terminal amino groups per 10.sup.6 g of polyamide, in excess of the carboxyl groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.