53.
    发明专利
    未知

    公开(公告)号:DE3614594A1

    公开(公告)日:1988-01-07

    申请号:DE3614594

    申请日:1986-04-30

    Applicant: BASF AG

    Abstract: High temperature resistant molding materials containing (A) 5-95 mol % of blocks having the structural unit I (I) (B) 5-95 mol % of blocks having the structural unit II (II) (C) 0-80 mol % of blocks having the structural unit III (III) the molecular weight of the blocks being within the range 2000-20,000, where X is -O-, -S-, (only if a or b NOTEQUAL 0), (R7=R8=CH3 only if a or b NOTEQUAL O) or a chemical bond, R7 and R8 are each alkoxy or alkyl of 1-6 carbon atoms, aryl or hydrogen, Q and W are each Z is -O- or a chemical bond and R1, R2, R3, R4, R5 and R6 are each alkyl or alkoxy of 1-6 carbon atoms, aryl, Cl or F and p, q and r are each 0 or 1 and a, b, c, d and e are each 0, 1, 2, 3 or 4.

    54.
    发明专利
    未知

    公开(公告)号:DE3602090A1

    公开(公告)日:1987-07-30

    申请号:DE3602090

    申请日:1986-01-24

    Applicant: BASF AG

    Abstract: In the preparation of block copolyethers which contain sulfonyl and keto groups by polycondensation of aromatic dihalogen compounds and bisphenols in the presence of an alkali metal carbonate in N-methylpyrrolidin-2-one as a solvent, an amorphous polyether sulfone block having a molecular weight Mn of from 1,500 to 30,000 is prepared in a first stage, and, in a second stage, a polyetherketone block is polymerized onto the living chain ends, the molar ratio of sulfonyl to keto groups being from 90:10 to 40:60.

    55.
    发明专利
    未知

    公开(公告)号:DE19639592A1

    公开(公告)日:1998-04-02

    申请号:DE19639592

    申请日:1996-09-26

    Applicant: BASF AG

    Abstract: Thermoplastic moulding compounds contain, in relation to the total weight of the moulding compound: (A) 72 to 88.5 wt % of a thermoplastic polymer which, in relation to (A), consists of (a1) 50 to 100 wt % styrene or alpha -methylstyrene or their mixtures; (a2) 0 to 50 wt % acryl nitrile; (a3) 0 to 50 wt % one or several other monoethylenically unsaturated monomers; (B) 10 to 20 wt % of a first graft polymer with a mean particle diameter d50 of 400 to 600 nm and which, in relation to B, consists of (b1) 30 to 90 wt % of a rubber elastic graft core (with (b11) 80 to 99.99 wt % n-butylacrylate, (b12) 0.01 to 20 wt % of at least one cross-linking monomer, (b13) 0 to 40 wt % one or several other monoethylenically unsaturated monomers); (b2) 10 to 70 wt % of a graft shell (with in relation to (b2): (b21) 50 to 100 wt % styrene or alpha -methylstyrene or their mixtures, (b22) 0 to 50 wt % acryl nitrile, (b23) 0 to 50 wt % of one or several other monoethylenically unsaturated monomers); (C) 1.5 to 8 wt % of a second graft polymer with bimodal particle size distribution with mean particle diameters d50 of 25 to 200 nm on the one hand and 350 to 550 nm on the other hand, and which, in relation to (C), consists of (c1) 30 to 90 wt % of a rubber elastic graft core (with (c11) 50 to 100 wt % butadiene or isoprene or their mixtures, (c12) 0 to 50 wt % one or several other monoethylenically unsaturated monomers); (c2) 10 to 70 wt % of a graft shell (with (c21) 50 to 100 wt % styrene or alpha -methylstyrene or their mixtures, (c22) 0 to 50 wt % acryl nitrile, (c23) 0 to 50 wt % one or several other monoethylenically unsaturated monomers); (D) 0 to 50 wt % parting agents or mould release agents, pigments, dyes, fire-proofing agents, antioxidants, stabilisers against exposure to light, fibrous or powdery fillers or reinforcing agents or antistatic agents, or other additives or their mixtures. The sum of graft polymers (B) and (C) equals 11.5 to 25 wt % of the sum of the three components (A), (B) and (C), and the sum of the four components (A) to (D) equals 100 wt %.

    58.
    发明专利
    未知

    公开(公告)号:DE59304012D1

    公开(公告)日:1996-11-07

    申请号:DE59304012

    申请日:1993-02-25

    Applicant: BASF AG

    Abstract: The invention relates to a sheet-like composite material comprising a polyolefin matrix and natural fibre mats as reinforcing material, where the natural fibres have a fibre weight of greater than 10 tex. Preference is given to sisal fibres. The composite materials are used, in particular, in automobile production.

    59.
    发明专利
    未知

    公开(公告)号:DE58909403D1

    公开(公告)日:1995-10-05

    申请号:DE58909403

    申请日:1989-06-06

    Applicant: BASF AG

    Abstract: Process for the continuous preparation of linear thermoplastic polyesters, in which a) a transesterification or esterification product of aliphatic and/or aromatic dicarboxylic acids having a molecular weight /l, and in step c), the precondensate is further condensed at a temperature of from 240 to 290 DEG C under a pressure of from 0.5 to 20 mm Hg and a residence time of from 10 to 40 minutes, giving polyesters which are suitable for granulation.

Patent Agency Ranking