Polyester compositions suitable for the manufacture of fibres and films with high elastic modulus
US5976654A · kind A · utility
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11References
5Claims
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Key dates
| Filing date | Sep 12, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Sep 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Polyester resins containing up to 5% by weight of a polymeric liquid crystal and an upgrading agent capable of increasing the I.V. of the resin by polyaddition reaction in the solid state with the end groups of the resin. Fibers, films and biaxially oriented articles obtained from the resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.