Liquid-crystalline polymer composition, method for producing the same, and molded article using the same
US7618552B2 · kind B2 · utility
9Cited by
8References
13Claims
0Family size
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Key dates
| Filing date | Feb 9, 2007 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Oct 9, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A liquid-crystalline polymer composition with less warpage not only in molding but also in a high temperature treatment conducted after molding is provided. The liquid-crystalline polymer comprises (i) 30 to 95% by weight of a first liquid-crystalline polymer having a deflection temperature under load of 200° C. or higher and (ii) 5 to 70% by weight of a second liquid-crystalline polymer having a deflection temperature under load lower than that of the first liquid-crystalline polymer, a melting point from 270° C. to lower than 400° C. and a flow-beginning temperature of 270° C. or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.