公开(公告)号：DE3738959A1

公开(公告)日：1989-05-24

申请号：DE3738959

申请日：1987-11-17

Applicant: BASF AG

Inventor： BRANDT HERMANN DR ,  GAUSEPOHL HERMANN DR ,  DREHER HERMANN DR ,  LEBER LUDGER DR

IPC: C08G65/46

公开(公告)号：DE59007712D1

公开(公告)日：1994-12-22

申请号：DE59007712

申请日：1990-06-02

Applicant: BASF AG

Inventor： LEBER LUDGER DR ,  BRANDT HERMANN DR ,  OSTERMAYER BERTRAM DR ,  FISCHER HERMANN DR ,  GAUSEPOHL HERMANN DR

IPC: C08G65/44

公开(公告)号：DE3902939A1

公开(公告)日：1990-08-02

申请号：DE3902939

申请日：1989-02-01

Applicant: BASF AG

Inventor： FEUERHERD KARL-HEINZ DR ,  HEDTMANN-REIN CAROLA DR ,  LEBER LUDGER DR

IPC: B41M5/26 ,  B29D11/00 ,  C07C39/15 ,  C07C50/08 ,  C07C50/24 ,  C07C50/30 ,  C07C211/03 ,  C07C215/78 ,  C07C215/80 ,  C07C225/20 ,  C07C225/28 ,  C07C305/24 ,  C07D295/02 ,  C07D295/027 ,  C07D295/096 ,  C07D295/112 ,  C07D295/116 ,  C08K5/08 ,  C08K5/13 ,  C08K5/42 ,  C08L25/04 ,  C08L25/06 ,  C08L25/16 ,  C08L71/00 ,  C08L71/08 ,  C08L71/12 ,  G02B1/04 ,  G11B7/24 ,  G11B7/253 ,  G11B11/10 ,  G11B11/105

Abstract: The novel, optically clear, isotropic moulding for optical purposes which is free from orientation birefringence comprises a mixture of polyphenylene ethers, vinylaromatic polymers and, as additives, traces of novel diphenoquinone and/or diphenohydroquinone derivatives. In addition, the novel moulding may contain, as further additives, novel ammonium salts of sulphuric acid monoesters of diphenohydroquinones. The novel moulding has a yellowness index (YI) of from 40 to 90. It can be produced simply by injection moulding. The novel moulding, in the form of a circular, perforated disc, is highly suitable for use as a dimensionally stable substrate for audio compact discs (CD), audio-visual compact discs (CDV), laser-optical data discs and magnetooptical data discs, and data carriers of this type which contain this novel dimensionally stable substrate have particularly advantageous applicational properties.

公开(公告)号：DE3923229A1

公开(公告)日：1991-01-24

申请号：DE3923229

申请日：1989-07-14

Applicant: BASF AG

Inventor： BECKERLE WILHELM FRIEDRICH ,  DERSCH ROLF DR ,  FRANZMANN GERNOT DR ,  GAREISS BRIGITTE DR ,  LEBER LUDGER DR

IPC: C08J3/03 ,  C04B24/22 ,  C04B24/26 ,  C04B28/02 ,  C08J3/12 ,  C08L61/04 ,  C08L61/14

公开(公告)号：DE3839232A1

公开(公告)日：1990-05-23

申请号：DE3839232

申请日：1988-11-19

Applicant: BASF AG

Inventor： BRANDT HERMANN DR ,  OSTERMAYER BERTRAM DR ,  MUEHLBACH KLAUS DR ,  LEBER LUDGER DR ,  GAUSEPOHL HERMANN DR ,  HOFMANN JUERGEN

IPC: C02F1/52 ,  C02F9/00

Abstract: Process for the recovery of copper from the effluent of poly(phenylene ether) synthesis, which includes in a first step the oxidative linking of phenols to oxygen in the presence of a copper-amine catalyst in organic solvents and, in a second step, the separation of the catalyst with the aid of aqueous solutions of complexing agents and/or cation exchange resins, characterized in that the effluent from the catalyst separation step is treated at a pH of 4 to 14 with a compound of the general formula I in which R and R are hydrogen, C1-C20-alkyl, an aryl, alkylaryl or aralkyl group having up to 20 C atoms and R is hydrogen, ammonium, sodium or potassium, and then separating off the resulting precipitate.

公开(公告)号：DE3766924D1

公开(公告)日：1991-02-07

申请号：DE3766924

申请日：1987-09-18

Applicant: BASF AG

Inventor： BRANDT HERMANN DR ,  MITULLA KONRAD DR ,  DREHER HERMANN DR ,  LEBER LUDGER DR ,  HAMBRECHT JUERGEN DR

IPC: C08G65/46

公开(公告)号：DE3919229A1

公开(公告)日：1990-12-20

申请号：DE3919229

申请日：1989-06-13

Applicant: BASF AG

Inventor： LEBER LUDGER DR ,  BRANDT HERMANN DR ,  OSTERMAYER BERTRAM DR ,  FISCHER HERMANN DR ,  GAUSEPOHL HERMANN DR

IPC: C08G65/44

公开(公告)号：DE3632528A1

公开(公告)日：1988-03-31

申请号：DE3632528

申请日：1986-09-24

Applicant: BASF AG

Inventor： BRANDT HERMANN DR ,  MITULLA KONRAD DR ,  DREHER HERMANN DR ,  LEBER LUDGER DR ,  HAMBRECHT JUERGEN DR

IPC: C08G65/46