O-Tolidine sulfone based copolyamide fiber
US4373087A · kind A · utility
1Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1981 |
| Grant date | Feb 8, 1983 |
| Priority date | — |
| Expiry date | Mar 13, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel copolyamide fiber having an excellent initial modulus of elasticity and mechanical strength, is made from a copolyamide consisting essentially of unit A of the formula (A): ##STR1## unit (B) of the formula (B): ##STR2## and unit (C) of the formula (C): ##STR3## wherein CH.sub.3 groups in the formula (A) are located in the ortho-position to NH groups, the sum of the amount of units (A) and (B) is substantially equimolar to the amount of unit (C) and the molar ratio of unit (A) to unit (B) is from 10/90 to 50/50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.