Melt spinnable copolyamines with improved modulus of elasticity, filaments produced from them and use of such filaments
US5698660A · kind A · utility
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Key dates
| Filing date | May 28, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | May 28, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2969
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolyamide with an improved modulus of elasticity for the melt-spinning of filaments consists of at least 75 wt. % of a linear polyamide base polymer with a melting point of 150.degree.-320.degree. C. and at least 0.5 wt. % of a block comonomer which is incorporated into the base polymer and has a glass transition temperature (T.sub.g) between 130.degree. and 330.degree. C. and a degree of polymerization (DP) of <100. The filaments produced from the modified copolymer with an initial modulus of 500 to 1500 cN/tex are suitable for use in the production of technical fabrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.