Compatibility improvement in aromatic polyesters with mineral fillers
US7294663B2 · kind B2 · utility
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17References
16Claims
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Key dates
| Filing date | Sep 11, 2003 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Sep 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Liquid crystalline polymers (LCP) with relatively high melting points are prepared by a process which includes solid state polymerization of a (pre)polymer, which contains alkali metal cations, to raise the LCP molecular weight. The presence of the alkali metal cations in the (pre)polymer usually results in a final polymer with less color and/or a higher melting point. The LCPs are useful as molding resins and for films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.