摘要:
Wholly aromatic mesomorphic polyether ester imides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of(a) from 5 to 35 mol % of repeat units of the formula I ##STR1## (b) from 5 to 35 mol % of repeat units of the formula II ##STR2## where X is a chemical bond, --O--, --S--, --SO.sub.2 --, --CO--, --Ch.sub.2 -- or .dbd.C(CH.sub.3).sub.2, and n is 0 or 1,(c) from 15 to 30 mol % of repeat units of the formula III ##STR3## (d) a molar amount corresponding to the total amount of (b) plus (c) minus (a) of repeat units of the formulae IV and/or V ##STR4## (e) repeat units of the formula VI ##STR5## the mole percentages of components a, b, c, d and e adding up to a 100 mol % in each case,the preparation thereof and fibers, films and molding prepared therefrom.
摘要翻译:全芳族介晶聚醚酯酰亚胺,其在320℃以下形成液晶纤维形成熔体,并由(a)5-35摩尔%的式I(b)的重复单元组成, 5至35摩尔%的式II的重复单元其中X是化学键,-O - , - S - , - SO 2 - , - CO - , - C 2-或= C(CH 3)2,n为0或1,(c)15至30摩尔%的式III的重复单元(III)(d)相当于(b) (IV)的重复单元加(c) - (a)(Ⅴ)(ⅴ)式Ⅵ的重复单元Ⅵ(VI)的重复单元 在各种情况下,组分a,b,c,d和e加起来为100mol%,其制备和由其制备的纤维,薄膜和模制品。
摘要:
Wholly aromatic mesomorphic polyester imides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of(a) from 5 to 35 mol % of repeat units of the formulae I and/or II ##STR1## where x can be identical or different and each is --O--, --S--, --SO.sub.2 --, --CO--, --CH.sub.2 -- or .dbd.C(CH.sub.3).sub.2, and n is 1 or 2,(b) from 0 to 30 mol % of repeat units of the formulae III and/or IV ##STR2## (c) a molar amount corresponding to the total amount of components (a) and (b) of repeat units(c1) from 3 to 35 mol % of units of the formula V ##STR3## and one or more of the repeat units. 2 (c2) from 2 to 25 mol % of units of the formula VI ##STR4## (c3) from 0 to 25 mol % of units of the formula VII ##STR5## (c4) from 2 to 25 mol % of units of the formula VIII ##STR6## the total of the molar proportions of components (c1), (c2), (c3) and (c4) corresponding in each case to the total in mol % of components (a) and (b),(d) if desired from 5 to 25 mol % of repeat units of the formula IX ##STR7## (e) repeat units of the formula X ##STR8## the molar proportions of (a), (b), (c), (d) and (e) in each case adding up to 100 mol %, the preparation thereof and fibers, films and molding prepared therefrom.
摘要:
A liquid crystalline copolymer contains a comonomer to which a radical ##STR1## is bonded, where X is a chemical bond, O or NR.sup.1, Y is a chemical bond or --CO--, R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl and A is a linear or branched C.sub.2 -C.sub.20 -alkylene group which may be interrupted by --O-- or ##STR2## The liquid crystalline copolymers have very good lightfastness, high dichroism and a high absorption.
摘要:
Wholly aromatic, mesomorphic polyesters which give a homogeneous liquid crystalline melt at below 320.degree. C. consist of(a) not less than 10 mol % of repeating units of the formula I ##STR1## (b) from 1 to 25 mol % of repeating units of the formula II ##STR2## (c) from 5 to 20 mol % of one or more of the repeating units of the formulae III to VII ##STR3## (d) from 5 to 15 mol % of repeating units of the formula VIII ##STR4## and (e) from 10 to 60 mol % of repeating units of the formula IX ##STR5## the sum of the molar amounts of (a), (b), (c), (d) and (e) being 100 mol % in each case and the molar ratio of the components (b)+(c)+(d) to component (e) being from 0.9:1 to 1.1:1.
摘要:
Wholly aromatic mesomorphic polyester amide imides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of(a) from 5 to 35 mol % of repeat units of the formula I and/or II ##STR1## where X can be identical or different, each X being --O--, --S--, --SO.sub.2 --, --CO--, --CH.sub.2 -- or .dbd.C(CH.sub.3).sub.2, and n is 0 or 1(b) from 0 to 30 mol % of repeat units of the formulae III and/or IV ##STR2## (c) a molar amount corresponding to the total amount of components (a) and (b) of one or more of the repeat units V, VI, VII, VIII, IX or X in an amount of(c1) from 3 to 35 mol % of units of the formula V ##STR3## (c2) from 0 to 10 mol % of units of the formula VI ##STR4## (c3) from 2 to 25 mol % of units of the formula VII ##STR5## (c4) from 2 to 20 mol % of units of the formula VIII ##STR6## (c5) from 0 to 20 mol % of the units of the formula IX ##STR7## (c6) from 2 to 20 mol % of units of the formula X ##STR8## the total of the mole percentages of components (c1), (c2), (c3), (c4), (c5) and (c6) equalling in each case the total of the mole percentages of components (a) and (b);(d) not less than 10 mol % of repeat units of the formula XI ##STR9## (e) from 0 to 25 mol % of one or more of the repeat units of the formula XII, XIII or XIV ##STR10## the mole percentages of components (a), (b), (c), (d) and (e) adding up to 100 mol % in each case, the preparation thereof and fibers, films and moldings prepared therefrom.
摘要:
Wholly aromatic mesomorphic polyester amides which form a liquid-crystalline fiber-forming melt below 320.degree. C., composed of(a) from 3 to 30 mol % of repeat units of the formula I ##STR1## (b) from 3 to 30 mol % of repeat units of the formula II and/or III ##STR2## (c) from 2 to 25 mol % of one or more of the repeat units of the formula IV, V or VI, ##STR3## (d) a molar amount corresponding to the total amount of components (a), (b) and (c) excluding the repeat unit of the formula III, of the repeat units of the formula VII ##STR4## which, if desired, can in part be replaced by repeat units of the formula VIII ##STR5## (e) if desired from 5 to 25 mol % of repeat units of the formula IX ##STR6## (f) repeat units of the formula X ##STR7## the molar proportions of components (a), (b), (c), (d), (e) and (f) in each case adding up to 100 mol %, and preparation thereof.
摘要:
Wholly aromatic mesomorphic polyester imides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of(a) from 5 to 35 mole % of repeat units of the formulae I and/or II ##STR1## where the Xs and n's can be identical or different, each X being --O--, --S--, --SO.sub.2 --, --CO--, --CH.sub.2 -- or .dbd.C(CH.sub.3).sub.2 and n being 0 or 1,(b) from 0 to 30 mole % of repeat units of the formulae III and/or IV ##STR2## (c) a molar amount corresponding to the total amount of components a and b of one or more of the repeat units of the formulae V, VI, VII or VIII ##STR3## (d) not less than 10 mole % of repeat units of the formula IX ##STR4## (e) if desired from 5 to 25 mole % of repeat units of the formula X ##STR5## the molar proportions of components a, b, c, d, and e adding up to 100 mole % in each case,and the preparation thereof.
摘要:
Wholly aromatic mesomorphic polyester amides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of(a) from 5 to 35 mol % of repeat units of the formula I ##STR1## (b) from 5 to 15 mol % of repeat units of the formula II ##STR2## (c) a molar amount corresponding to the total amount of components (a) and (b), and, when (e) signifies repeat units of the formula VI or VII, (e) of repeat units of the formula III ##STR3## (d) not less than 10 mol % of repeat units of the formula IV ##STR4## (e) from 2 to 15 mol % of repeat units of the formula V ##STR5## or of the formula VI ##STR6## the repeat units of the formula VI being replaceable in part by repeat units of the formula VII ##STR7## with the proviso that the molar proportions of components (a), (b), (c), (d) and (e) add up to 100 mol % in each case, the preparation thereof and fibers, films, molding and surface coating materials prepared therefrom.
摘要:
A laser-optical write and read process whereby a thermally alterable recording layer which contains liquid-crystalline compounds in homogeneous planar orientation and forms part of a multilayer, sheet-like recording material is written by means of a write laser beam with analogue or digital data in the form of thermally altered areas, whereafter the written data are read by means of a read laser beam, including: analyzing the light transmitted or reflected by the recording material, and reading the data by determining the polarization-optical contrast between the thermally altered and the unaltered areas and/or utilizing for this purpose the interference of the light rays which form from the laser lightwaves in a Gaussian intensity distribution owing to the different phase velocities of the light in the center of thermally altered areas on the one hand and their thermally unaltered surroundings on the other.
摘要:
A polymeric molding composition contains(a) 20-70% by weight of a thermotropic, liquid-crystalline polymer(b) 10-50% by weight of a polycarbonate(c) 10-50% by weight of a polyester, the weight percentages (a), (b) and (c) adding up to 100, and(d) up to 60% by weight, based on the total amount of proportions (a), (b) and (c), of further polymers, fillers, reinforcing agents, processing aids or other additives, and is used for producing moldings, fibers, films or coatings.