Solvent resistant halogenated aromatic polyester fibers and process therefor
US4346209A · kind A · utility
3Cited by
10References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 19, 1980 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Nov 19, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/6826
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Solvent resistant halogenated aromatic polyester fibers are prepared by first heat treating the fibers at substantially constant length at a temperature of from about 270.degree. to about 295.degree. C. for a period of from about 5 to about 60 minutes, and then further treating the fibers with perchloroethylene which is at a temperature of from about 80.degree. C. up to its boiling point for a period of at least about 15 minutes to produce halogenated aromatic polyester fibers having improved solvent resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.