公开(公告)号：DE2461936A1

公开(公告)日：1976-07-08

申请号：DE2461936

申请日：1974-12-31

Applicant: BASF AG

Inventor： PISTER PHILIPP ,  BUETTNER FRANZ ,  OHLINGER MANFRED DIPL CHEM DR ,  STRITZINGER HEINZ DIPL ING ,  HARTMANN JOB-WERNER DIPL CHEM ,  SCHNEIDER WALTER ,  HAMMON FRITZ

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/716 ,  G11B5/68 ,  B05D5/12 ,  H01F10/02

公开(公告)号：DE2364878A1

公开(公告)日：1975-07-03

申请号：DE2364878

申请日：1973-12-28

Applicant: BASF AG

Inventor： ROLLER HERMANN ,  STRITZINGER HEINZ DIPL ING ,  HARTMANN JOB-WERNER DIPL CHEM ,  SCHNEIDER WALTER

IPC: G11B5/708 ,  G11B5/735 ,  G11B5/68

Abstract: A magnetic recording tape consists of a non-magnetic carrier film, a magnetic layer contg. a finely divided magnetic pigment in a binder, and on the back of the carrier a non-magnetic backing layer, with higher electrical conductivity than the carrier, consisting of a mixt. of (A) an organic polymeric binder and (B) a powder mixt. of (a) 15-60 (15-35) pts. wt. conducting carbon black particles, (bi) 5-40(25-35) pts. of a reaction rpod. of montmorillonite, Al2(OH)2 Si4O10 .H2O, with an alkylammonium base, or (b2) 15-85 pts. of a powdered mixt. of 15-90(24-31) wt. % flaky silicate particles with Mohs hardness >6(>5) and 85-10 wt. % cubic or spherical particles of hard, durable oxides of Al, Si and/or Cr, and (c) 20-55 pts. wt. of a finely divided inorganic non-magnetic filler. The backing layer resists rapid coiling of the tape, is not sensitive to dust, and has improved bonding and crack-resistance. (A) The binder is esp. an elastomeric polyurethane free from NCO, prepd. from a polyester of a 4-6C aliphatic dicarboxylic acid and 3-10C diol, and a 6-24C (8-20C) diisocyanate, with a glycol extender; the polyurethane may be mixed with is not >40 (10-30) wt. % of other binders, e.g. vinyl(idene) chloride polymers or an epoxy resin, esp. from bisphenol A and epichlorohydrin. Copolymers of 70-95(75-90) wt. % vinyl chloride and 50-5% of a 1-3C alkyl ester of a 3-5C unsatd. acid may also be used as binder, e.g. a copolymer of 70-90% vinyl chloride, 5-15% dimethyl maleate and 5-15% diethyl maleate.

公开(公告)号：CA857937A

公开(公告)日：1970-12-08

申请号：CA857937D

Applicant: BASF AG

Inventor： KOENIG DIETRICH ,  HOHWILLER FRIEDER ,  KOEHLING KLAUS ,  SCHNEIDER WALTER

公开(公告)号：AT343547T

公开(公告)日：2006-11-15

申请号：AT04739694

申请日：2004-06-08

Applicant: BASF AG

Inventor： FECHTENKOETTER ANDREAS ,  DECKERS ANDREAS ,  EHLE MICHAEL ,  GAST SIEGFRIED ,  KASEL WOLFGANG ,  MAEHLING FRANK-OLAF ,  WEBER WILHELM ,  SCHNEIDER WALTER

IPC: C02F1/56 ,  C02F1/00

Abstract: Use of aqueous dispersions comprising at least one at least partially neutralized ethylene copolymer wax selected from among ethylene copolymer waxes which comprise, as comonomers in copolymerized form, (A) from 26.1 to 39% by weight of at least one ethylenically unsaturated carboxylic acid and (B) from 61 to 73.9% by weight of ethylene, and ethylene copolymer waxes which comprise, in copolymerized form, (A') from 20.5 to 38.9% by weight of at least one ethylenically unsaturated carboxylic acid, (B') from 60 to 79.4% by weight of ethylene and (C') from 0.1 to 15% by weight of at least one ethylenically unsaturated carboxylic ester, as auxiliaries for wastewater treatment.