Method for obtaining para-type wholly aromatic polyamide particles
US8110129B2 · kind B2 · utility
1Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2006 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Mar 15, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/29
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention pertains to a method for obtaining para-type wholly aromatic polyamide particles, comprising the steps: a) introducing an aramid polymer solution into a water-based coagulating liquid to obtain a hydrous shaped product; and b) subjecting the never-dried or partly-dried shaped product having a water content of 10 to 99% by weight to freeze-grinding. These aramid polymer particles can be used as a filler material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.