公开(公告)号：EP0667876A1

公开(公告)日：1995-08-23

申请号：EP94927574.0

申请日：1994-09-07

申请人： EUROPÄISCHE WIRTSCHAFTSGEMEINSCHAFT (E.W.G.)

发明人： MORMANN, Werner ,  IRLE, Christoph

IPC分类号： C08G18 ,  C08G59 ,  C09K19

CPC分类号： C08G18/771 ,  C08G18/003 ,  C08G18/8125 ,  C09K19/3804 ,  C09K19/3823

摘要： Described are anisotropic polymers produced from a diepoxide A of the formula (I) in which: Y is O-CY2, CH2 or a C-C single bond; X is one of structural elements (a), (b), (c), (d), (e) or (f); R1 to R5, independently or each other, are hydrogen, halogen or a methyl, ethyl, propyl or butyl group; or R2, R3, R4 or R5 may be a benzene group, whereby R2 to R5 is hydrogen when R1 is not hydrogen and R1 is hydrogen when R2 to R5 are not hydrogen, and n may be 1 to 3; whereby the central grouping Z may be an aromatic heterocyclic ring containing one or two nitrogen atoms or a cycloaliphatic trans-1,4-cyclohexylene group, and from a diisocyanate B of one of the formulae (II) to (VII) in which: Y is a C-C single bond, CH2 or C2H4; X is one of structural elements (a), (b), (c) or (f), n is 0 or 1 and R1 to R5 are the atoms or groups given in the definition of formula (I); whereby the central grouping Z may also be a cycloaliphatic trans-1,4-cyclohexylene group, and R is (CH2)6-NCO, the molar ratio of diepoxide A to diisocyanate B being about 2:1 to 1:4. Also described is a method for the production of such anisotropic polymers, in which the diepoxide A and the diisocyanate B are reacted at a temperature of about 100 to 300 °C at a molar ratio of about 2:1 to 1:4. These anisotropic polymers have a low coefficient of thermal expansion in the direction of orientation of the molecules and can be used in the manufacture of insulation materials, laminates and coatings.

公开(公告)号：EP0717735B1

公开(公告)日：1998-06-10

申请号：EP94926244.8

申请日：1994-09-07

申请人： EUROPÄISCHE WIRTSCHAFTSGEMEINSCHAFT (E.W.G.)

发明人： MORMANN, Werner ,  ZIMMERMANN, Jörg

IPC分类号： C07D251/34 ,  C09K19/34 ,  C08G73/06

CPC分类号： C09K19/3475 ,  C07D251/34 ,  C08G73/0644 ,  C09K19/38

摘要： Described are tris-(cyanato)-s-triazines of formula (I) in which R1 and R2 are each, independently of each other, halogen, hydrogen or a methyl or ethyl group, plus a method for the preparation of anisotropic duroplastic networks by the melt-polycyclotrimerization of polycyanates present as liquid-crystal tris-(cyanato)-s-triazines of formula (I) of claim 1, optionally in the presence of catalysts, comonomers and other commonly used additives. Also includes in the invention are anisotropic duroplastic networks obtained by this method. Such networks exhibit an E-modulus which is superior to that of comparable prior art products.

公开(公告)号：EP0717735A1

公开(公告)日：1996-06-26

申请号：EP94926244.0

申请日：1994-09-07

申请人： EUROPÄISCHE WIRTSCHAFTSGEMEINSCHAFT (E.W.G.)

发明人： MORMANN, Werner ,  ZIMMERMANN, Jörg

IPC分类号： C07D251 ,  C08G73 ,  C09K19

CPC分类号： C09K19/3475 ,  C07D251/34 ,  C08G73/0644 ,  C09K19/38

摘要： Described are tris-(cyanato)-s-triazines of formula (I) in which R1 and R2 are each, independently of each other, halogen, hydrogen or a methyl or ethyl group, plus a method for the preparation of anisotropic duroplastic networks by the melt-polycyclotrimerization of polycyanates present as liquid-crystal tris-(cyanato)-s-triazines of formula (I) of claim 1, optionally in the presence of catalysts, comonomers and other commonly used additives. Also includes in the invention are anisotropic duroplastic networks obtained by this method. Such networks exhibit an E-modulus which is superior to that of comparable prior art products.