Pneumatic cellular aromatic polyamide articles and process for the preparation thereof
US4552810A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1983 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Dec 13, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/298
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Pneumatic cellular aromatic polyamide articles characterized by PA1 (a) being articles prepared substantially from aromatic polyamide. PA1 (b) said articles having numerous bubbles at the void ratio in the range of 10 to 95%, PA1 (c) said bubbles being substantially enclosed in said articles, and PA1 (d) said articles having an average thickness in the range of 0.2 to 10 mm on the cross section made by cutting them at right angles to the longest axis. The present invention provides also a process for the preparation thereof. According to the present invention, there are suitably provided pneumatic cellular aromatic polyamide article having a high strength and a wide range of void ratio, comparatively heavy thickness, excellent heat resistance and thermal insulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.