31.
    发明专利
    未知

    公开(公告)号:DE3685016D1

    公开(公告)日:1992-05-27

    申请号:DE3685016

    申请日:1986-11-24

    Applicant: BASF AG

    Abstract: Polyesteramides (I) forming a liq. crystalline, thread-forming melt below 320 deg.C comprise a) 3-30 mol.% repeating units of formula (1) b) 3-30 mol.% repeating units of formula (2) and/or (3) c) 2-25 mol. % at least one of the repeating units of formula (4), (5) or (6) d) molar amt. corresp. to a + b + c, but excluding units of formula 3) repeating units of formula (7) opt. partly replaced by repeating units of formula (8) e) opt. 5-25 mol.% repeating units of formula (9) f) repeating units of formula (10) where sum of molar amts. of a,b,c,d,e and f is 100 mol.%.

    VOLLAROMATISCHE THERMOTROPE POLYESTER UND POLYESTERAMIDE.

    公开(公告)号:DE3776610D1

    公开(公告)日:1992-03-19

    申请号:DE3776610

    申请日:1987-08-20

    Applicant: BASF AG

    Abstract: The polyesters (I) are based on A) 30-60 mol.% 4-hydroxybenzoic acid B) 20-35 mol.% mixt., in molar ratio 1.04:1-19:1, of B1) terephthalic acid and B2) isophthalic acid C) 20-35 mol.% mixt. of C1) hydroquinone C2) 4,4'-dihydroxydiphenyl C3) 0.5-5 mol.% C3a) 2,7-dihydroxynaphthalene and/or C3b) resorcinol and/or C3c) dihydroxy cpd. of formula (I) X = CH2,C(Me)2, S, SO2, O, or CO, opt. substd. in nucleus by Cl, Br, Aryl, or 1-8C alkyl or alkoxy, and/or C3d) cpd. of formula (II) X' = NH2 or OH with substits. m- or p- to each other, opt. substd. in nucleus by Cl, Br, aryl, or 1-8C alkyl or alkoxy where molar ratio C1:C2 = 0.1:1-2.67:1, molar ratio B:C = 0.9:1-1.1:1. Prepn. of (I) by one-stage polycondensation in melt of A, B1, B2, C1, C2, and C3 in presence of 5-60% molar excess, on total OH content, anhydride of 2-6C alkanecarboxylic acid, opt. with postcondensation in solidphase. Dimensionally stable mouldings contg. (I) are claimed. C3 is pref. C3a and/or C3b or C3c where X = C(Me)2, S, SO2, O, or CO. C3d is 4- and/or 3-aminophenol. Molar ratio B1:B2 = 1.5:1-10:1. Molar ratio C1:C2 = 0.5:1-2.33:1.

    33.
    发明专利
    未知

    公开(公告)号:DE3585248D1

    公开(公告)日:1992-03-05

    申请号:DE3585248

    申请日:1985-08-12

    Applicant: BASF AG

    Abstract: Polymers contg. mesogenic gps. are made up of polymer chairs contg. mesogenic gps., to which are bound side chains which each contain a mesogenic gp.. Pref. the mesogenic gps. in the polymer chain are bonded together via aliphatic or araliphatic gps. contg. hetero atoms in the chain, or by aromatic gps., and the side chains contg. mesogenic gps. are bound to the aliphatic, araliphatic or aromatic gps. in the polymer chain or to the mesogenic gps. in the polymer chain, pref. where the mesogenic gps. in the side chains are each bound to the polymer chain via an aliphatic gp. with hetero atoms in the chain with up to 12 chain members.

    38.
    发明专利
    未知

    公开(公告)号:DE3820361A1

    公开(公告)日:1989-12-21

    申请号:DE3820361

    申请日:1988-06-15

    Applicant: BASF AG

    Abstract: Process for the continuous preparation of aromatic polycondensates from a) aromatic hydroxy-, thio- and/or aminocarboxylic acids, b) aromatic dihydroxy-, dithio-, diamino- and/or hydroxy-amino compounds c) if desired urea and d) a molar amount of aromatic dicarboxylic acids which is equivalent to the sum of components b) and c), by 1. reacting components a), b) and d) and, if used, c) with lower fatty acid anhydrides in excess, at a temperature of from 140 to 280 DEG C while distilling off the fatty acids and fatty acid anhydrides, 2. passing the oligomer mixture from top to bottom through a vertical precondensation zone forming a two-phase mixture of prepolymers and vapour-form fatty acids, 3. separating the prepolymers from the vapour-form fatty acids and 4. condensing the prepolymer in a condensation zone to give a polycondensate which is suitable for granulation.

    39.
    发明专利
    未知

    公开(公告)号:DE3629210A1

    公开(公告)日:1988-03-03

    申请号:DE3629210

    申请日:1986-08-28

    Applicant: BASF AG

    Abstract: Fully aromatic thermotropic polyesters are based on (A) from 30 to 60 mol % of 4-hydroxybenzoic acid, (b) from 20 to 35 mol % of a mixture of (B1) terephthalic acid and (B2) isophthalic acid, the molar ratio of B1 to B2 being from 1.04:1 to 19:1, and (C) from 20 to 35 mol % of a mixture of (C1) hydroquinone, (C2) 4,4'-dihydroxydiphenyl and (C3) from 0.5 to 5 mol % of (C31) 2,7-dihydroxynaphthalene and/or (C32) 1,3-dihydroxybenzene and/or (C33) and aromatic dihydroxy compound of the general formula I (I) where X is -CH2-, -C(CH3)2-, -S-, -SO2-, -O- or -CO-, and/or (C34) a compound of the general formula II (II) where Y is NH2 or OH, the molar ratio of C1 to C2 being from 0.1:1 to 2.67:1 and the molar ratio of B to C being from 0.9:1 to 1.1:1.

    40.
    发明专利
    未知

    公开(公告)号:DE3621519A1

    公开(公告)日:1988-01-07

    申请号:DE3621519

    申请日:1986-06-27

    Applicant: BASF AG

    Abstract: Fully aromatic mesomorphic polyesters which give a liquid crystalline filament-forming melt below 300 DEG C. consist of (a) from 5 to 25 mol % of repeating units of the formula I (I) (b) from 5 to 25 mol % of repeating units of the formula II (II) (c) from 10 to 50 mol % of repeating units of the formula III (III) and (d) not less than 10 mol % of repeating units of the formula IV (IV) the sum of the molar amounts of components (a), (b), (c) and (d) being 100 mol %, and the molar ratio of components (a) and (b) to component (c) being from 0.9:1 to 1.1:1.

Patent Agency Ranking