公开(公告)号：DE2543384A1

公开(公告)日：1977-04-07

申请号：DE2543384

申请日：1975-09-29

Applicant: BASF AG

Inventor： KOVACS JENOE DIPL CHEM DR ,  BLINNE GERD DIPL CHEM DR ,  KUERTEN HERIBERT DIPL ING DR ,  BRUCK WOLFGANG DIPL ING ,  WEINLE WERNER ING GRAD

IPC: C08J3/14 ,  C08L79/08

公开(公告)号：DE2346055A1

公开(公告)日：1975-04-03

申请号：DE2346055

申请日：1973-09-13

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BRUCK WOLFGANG DIPL ING ,  SIMMLER WERNER DIPL ING DR

IPC: C02F1/46 ,  C25B9/23 ,  C25B11/04

Abstract: An electrode for electrolysis which contains tantalum, tantalum boride, tantalum carbide or an alloy of tantalum with a metal of the iron group in addition to an alloy of tungsten with a metal of the iron group.

公开(公告)号：DE2908303A1

公开(公告)日：1980-09-18

申请号：DE2908303

申请日：1979-03-03

Applicant: BASF AG ,  TENSI HANS M PROF DR ING

Inventor： WELZEL GERHARD DIPL CHEM DR ,  BRUCK WOLFGANG DIPL ING ,  STREIT WERNER DIPL CHEM DR ,  TENSI HANS-M PROF DIPL ING DR

IPC: C21D1/60 ,  C21D1/56

Abstract: The copolymers (I) pref. acrylic acid with e.g. vinyl benzene or their alkali-, ammonium- or amine salts in 0.0005-2% aq. soln. as a quenching medium for tempering metal workpieces is claimed. The quenching bath may also contain 0.05-0.5 wt.% polyether cpd. (II) opt. contg. N, pref. alkoxylated amines. The bath has improved heat transfer properties i.e. improved cooling rate for the metal and the polymer has higher stability. The polymer forms hardly any deposits on the hardened metal surface. There is no localised cooling of the workpiece and crack formation is avoided. The bath can be used for Al, Cu alloys and esp. steel.

公开(公告)号：DE2904240A1

公开(公告)日：1980-08-14

申请号：DE2904240

申请日：1979-02-05

Applicant: BASF AG

Inventor： WELZEL GERHARD DIPL CHEM DR ,  BRUCK WOLFGANG DIPL ING ,  STREIT WERNER DIPL CHEM DR

IPC: B29C33/62 ,  C03B40/02 ,  C10M173/02 ,  C10M3/22 ,  C10M3/04

Abstract: Used of crosslinked copolymer contg. COOH gps. or their alkali, NH4 or amine salts, in aq. soln. as release agents in hot forming of materials e.g. moulding or calendering of thermoplastics, rubbers, etc. is described. Good release properties, without adverse effect on subsequent treatment by coating, heat-sealing etc. Aq. soln. contg. 0.005-2 (0.05-0.5) wt.% copolymer from 3-6C unsatd. acid, e.g. (meth)acrylic or maleic acid, and a monomer with 2 C=C bonds, e.g. butadiene or divinyl benzene, or salts of these copolymers, and 0.05-10 wt.% polyether cpd. e.g. and adduct of an alkylene oxide and an alcohol, carboxylic acid, phenol, carbonamide or amine, which further stabilises the Leidenfrost vapour film between the mould and the material being moulded.