发明公开
EP0347963A2 Thermotropic copolyester, process for preparing it and its use
失效
热收缩共聚酯，Verfahren zu dessen Herstellung und seine Verwendung。
- 专利标题： Thermotropic copolyester, process for preparing it and its use
- 专利标题（中）： 热收缩共聚酯，Verfahren zu dessen Herstellung und seine Verwendung。
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申请号： EP89201384.8申请日： 1989-05-31
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公开(公告)号： EP0347963A2公开(公告)日： 1989-12-27
- 发明人: Pedretti, Ugo , Bresci, Bruno c/o DIPARTIMENTO INGEGNERIA CHIMICA , Bonfanti, Cesarina , Magagnini, Pier Luigi c/o DIPARTIMENTO INGEGNERIA , La Mantia, Francesco Paolo , Roggero, Arnaldo
- 申请人： ENIRICERCHE S.p.A.
- 申请人地址： Corso Venezia 16 I-20121 Milan IT
- 专利权人： ENIRICERCHE S.p.A.
- 当前专利权人： ENIRICERCHE S.p.A.
- 当前专利权人地址： Corso Venezia 16 I-20121 Milan IT
- 代理机构： Fusina, Gerolamo
- 优先权： IT2107988 19880623
- 主分类号： C08G63/60
- IPC分类号： C08G63/60 ; C09K19/38
摘要：
A thermotropic copolyester, showing a liquid-crystalline structure of nematic type within a desired temperature range, contains umits deriving from:
(a) a saturated bicarboxy aliphatic acid;
(b) 4,4′-di-hydroxy-biphenyl;
(c) 4-hydroxybenzoic acid; and
(d) 4-hydroxy-benzoic acid bearing an alkyl substituent or a halogen atom bonded to the aromatic ring.
Such a copolyester constitutes a material endowed with self-reinforcing characteristics, originating, through the usual transformation processes by injection or by extrusion techniques, marked molecular orientations, which supply the manufactured articles with high stiffness characteristics.
Said material can be also used as a reinforcing agent when is mixed, by means fo the usual techniques, with the traditional thermoplastic polymers.
(a) a saturated bicarboxy aliphatic acid;
(b) 4,4′-di-hydroxy-biphenyl;
(c) 4-hydroxybenzoic acid; and
(d) 4-hydroxy-benzoic acid bearing an alkyl substituent or a halogen atom bonded to the aromatic ring.
Such a copolyester constitutes a material endowed with self-reinforcing characteristics, originating, through the usual transformation processes by injection or by extrusion techniques, marked molecular orientations, which supply the manufactured articles with high stiffness characteristics.
Said material can be also used as a reinforcing agent when is mixed, by means fo the usual techniques, with the traditional thermoplastic polymers.
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