2.
    发明专利
    未知

    公开(公告)号:DE58906489D1

    公开(公告)日:1994-02-03

    申请号:DE58906489

    申请日:1989-10-09

    Applicant: BASF AG

    Abstract: Process for the preparation of imidazoles substituted in the 2- and/or 4- and/or 5-position by p-nitrophenyl and, if appropriate, additional substituents by reaction of imidazoles substituted in the 2- and/or 4- and/or 5-position by phenyl and, if appropriate, additional substituents with mixtures of sulphuric acid and nitric acid, by carrying out the reaction in the presence of urea.

    3.
    发明专利
    未知

    公开(公告)号:DE3880514D1

    公开(公告)日:1993-06-03

    申请号:DE3880514

    申请日:1988-01-22

    Applicant: BASF AG

    Abstract: Continuous prodn. of thermoplastic polyphenylene ether /polyamide moulding materials in an extruder comprises (1) reacting in a first zone at 240-350 deg.C (by wt. w.r.t. total components (a1)-(a5): (a1) 50-99.5% of a polyphenylene ether, (a2) 0-45% of a vinylaromatic polymer, (a3) 0.05-10% of (a31) an alpha-beta-unsatd. carboxylic acid of derivs. of this of formula R1-CO-C(R2)=C(R3)-CO-R4 (I) in which R1 and R4=OH, aryloxy, alkoxy, aralkoxy or cycloalkoxy gps. with up to 12C, or R1 and R4 together=-O- or -NR5-; R2 and R3=H, alkyl or cycloalkyl with up to 12C, aryl or Cl, or R2 and R3 may together form a 4-12C alkylene gp.; R5=alkyl, cycloalkyl, aralkyl or aryl gp. wit- up to 12C, which may be substd. with 1-4C alkyl or alkoxy gps., and/or (a32) a monomer contg. an amide gp. and a polymerisable double bond, and/or (a33) a monomer contg. a lactam gp. and a polymerisable double bond; and opt. (a4) 0-80% other monomers suitable for grafting and (a5) 0-20% radical initiators, for 0.1-15 mins. to give a modified polyphenylene ether A; and (2) subsequently introducing into a further zone of the extruder at 250-350 deg.C (by wt. w.r.t. total components A-F); (B) 5-95 wt.% of a polyamide, (C) 0-90 wt.% of an unmodified polyphenylene ether, (D) 0-45% of a vinyl aromatic polymer, (E) 0-40% of an impact-improving modifying rubber, (F) 0-60% additives and processing aids, and finally extruding the mixt..

    4.
    发明专利
    未知

    公开(公告)号:DE3871988D1

    公开(公告)日:1992-07-23

    申请号:DE3871988

    申请日:1988-02-24

    Applicant: BASF AG

    Abstract: Thermoplastics moulding compsn. contains (w.r.t. A+B) (A) 5-95 (wt.)% resin(s) consisting of (a1) 8-12C vinylaromatic monomer(s), (a2) alpha,beta-unsatd. dicarbonyl monomer(s) and (a3) elastomer(s) (rubber) and (B) 95-5% polyamide(s). The novelty is that resin (A) is obtd. by grafting (a1) to an unmodified resin in the presence of a3, then modification in the melt at 120-280 deg.C in the presence of a2, using the monomers in such amts. that A consists of 97-50% a1, 0.05-10% a2 and 3-50% a3.

    Thermoplastic moulding compositions based on polyesters and polyphenylene ethers

    公开(公告)号:DE3834085A1

    公开(公告)日:1990-04-12

    申请号:DE3834085

    申请日:1988-10-07

    Applicant: BASF AG

    Abstract: Thermoplastic moulding compositions based on A) polyesters and B) polyphenylene ethers, characterised by a content of C) from 0.1 to 40% by weight, based on the sum of A, B and C, of a copolymer comprising c1) from 40 to 99.9 mol % of a vinylaromatic monomer, c2) from 0.1 to 60 mol % of a compound of the formula (I) wherein R is -OH, alkoxy, aryloxy, aralkoxy or alkylaryloxy having up to 25 carbon atoms or, together with R is -NR -, R is -H or, if R is -H, is alkyl, aryl, aralkyl or alkaryl having up to 25 carbon atoms or chlorine, R is -H or, if R is -H, is alkyl, aryl, aralkyl or alkaryl having up to 25 carbon atoms or chlorine, R is alkoxy, aryloxy, aralkoxy or alkylaryloxy having up to 25 carbon atoms or, together with R , is -NR -, and R is hydrogen or an alkyl, cycloalkyl, aralkyl or aryl group having up to 12 carbon atoms which itself may be substituted by C1-C4-alkyl or -alkoxy groups, and c3) from 0 to 20 mol % of further copolymerisable monomers, and the preparation and use thereof.k

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