发明名称 |
BLEND OF FLEXIBLE COIL POLYMER AND THERMOTROPIC LIQUID CRYSTAL SEGMENTED BLOCK COPOLYMER |
摘要 |
Novel segmented block copolymers comprising mesogenic (or ''rod'') blocks and flexible coil polymer blocks are disclosed which are especially adapted to be blended with a substantially similar flexible coil polymer matrix to improve the mechanical properties of the flexible coil matric. For example, blends of poly(butylene terephthalate) (PBT) with a liquid crystalline block copolymer, poly(tetramethylene 4,4'-terephthaloyldioxydibenzoate)-b-poly(butylene terephthalate) (LCP-b-PBT) were prepared by precipitation from a common solvent, dried, and melt extruded through a capillary die to produce a monofilament. In all blends, the LCP-b-PBT domains were less than 0.1 mu m in size and ultrafinely and uniformly dispersed. Even though the blends were only moderately elongated into fibrils, interfacial adhesion between the LCP-b-PBT and the pure PBT appeared excellent. |
申请公布号 |
WO9301238(A1) |
申请公布日期 |
1993.01.21 |
申请号 |
WO1992US05670 |
申请日期 |
1992.07.07 |
申请人 |
UNIVERSITY OF MASSACHUSETTS AT AMHERST |
发明人 |
FARRIS, RICHARD, J.;JO, BYUNG-WOOK |
分类号 |
C08G69/44;C08L67/00;C08L67/02;C08L69/00;C08L77/00 |
主分类号 |
C08G69/44 |
代理机构 |
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代理人 |
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地址 |
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