Low melt viscosity amorphous copolyesters having improved resistance to lipids
US6287656A · kind A · utility
67Cited by
21References
20Claims
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Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Dec 1, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/29
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Amorphous copolyesters containing residues derived from 2,2'-[2,2-](sulfonylbis(4,1-phenyleneoxy))bis(ethanol). They exhibit enhanced heat distortion temperatures and glass transition temperatures without a significant increase in viscosity at low shear rates. The amorphous copolyesters also have improved resistance to attack by lipid solutions and are readily molded and extruded to form medial devices such as connectors, tubes, etc. which are useful for transport of lipids and other medical solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.