86.
    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.

    87.
    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.

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