公开(公告)号：DE2753694A1

公开(公告)日：1979-06-07

申请号：DE2753694

申请日：1977-12-02

Applicant: BASF AG

Inventor： MOTZ HERBERT DIPL ING DR ,  LEHNER AUGUST ING GRAD ,  HARTMANN HEINRICH DIPL CHEM DR ,  BACHMANN RUDOLF DIPL CHEM DR ,  HARTMANN HANS-JOERG DIPL ING D ,  FRISCHMANN HARALD DR ,  FALK ROLAND DIPL CHEM DR ,  HACK JOACHIM DIPL CHEM ,  VELIC MILAN DIPL ING DR

IPC: C08G18/66 ,  C09D5/23 ,  G11B5/70 ,  G11B5/702 ,  G11B5/68

Abstract: Magnetic recording media comprising a non-magnetic base and, applied thereto, a firmly adhering magnetic coating based on a finely divided magnetic pigment dispersed in a binder which contains at least 50 percent by weight of a special polyurethane elastomer, namely a thermoplastic polyurethane which is soluble in tetrahydrofuran, is free from isocyanate groups and has been manufactured from (A) 1 mole of a hydroxyl-containing polyester having a molecular weight of from 700 to 2,500, (B) from 0.3 to 3 moles of a linear aliphatic diol of 2 to 10 carbon atoms, (C) from 0.05 to 0.4 mole of a triol of 3 to 10 carbon atoms, and (D) from 1.35 to 4.7 moles of a diisocyanate of 6 to 30 carbon atoms, the amount of NCO groups being approximately equivalent to the amount of OH groups of the sum of components (A) to (C).

公开(公告)号：DE2442763A1

公开(公告)日：1976-03-25

申请号：DE2442763

申请日：1974-09-06

Applicant: BASF AG

Inventor： VAETH GUENTER ,  BACHMANN RUDOLF DIPL CHEM DR ,  HARTMANN HEINRICH DIPL CHEM DR ,  SPOOR HERBERT DIPL CHEM DR ,  LEHNER AUGUST ING GRAD

IPC: C08G18/10 ,  C08G18/66 ,  C08G18/76 ,  C14C11/00 ,  C08G18/65

Abstract: Thermoplastic, elastic polyurethanes which are soluble in ethers and/or ketones and have a high surface hardness and high modulus of elasticity are manufactured from a polyester-ol and/or a polyether-ol, a substituted or unsubstituted diisocyanato-diphenylmethane or diisocyanato-diphenylsulfone, an aliphatic, branched-chain diol of the formula HOCH2-CR1R2-CO2OH, in which R1 is alkyl and R2 is alkyl or hydrogen, and, optionally, a triol.

公开(公告)号：DE2920334A1

公开(公告)日：1980-12-04

申请号：DE2920334

申请日：1979-05-19

Applicant: BASF AG

Inventor： LEHNER AUGUST ING GRAD ,  HARTMANN HEINRICH DIPL CHEM DR ,  BACHMANN RUDOLF DIPL CHEM DR ,  KOHL ALBERT ,  SPOOR HERBERT DIPL CHEM DR ,  MAHLER KARL DIPL CHEM DR ,  BALZ WERNER DIPL CHEM DR

IPC: G11B5/70 ,  C09D5/23 ,  G11B5/702 ,  G11B5/842

公开(公告)号：DE2442762A1

公开(公告)日：1976-03-25

申请号：DE2442762

申请日：1974-09-06

Applicant: BASF AG

Inventor： VAETH GUENTER ,  BACHMANN RUDOLF DIPL CHEM DR ,  HARTMANN HEINRICH DIPL CHEM DR ,  HARTMANN HANS-JOERG DIPL ING D ,  SPOOR HERBERT DIPL CHEM DR ,  UHL KARL DIPL ING DR ,  LEHNER AUGUST ING GRAD ,  MOTZ HERBERT DIPL ING DR

IPC: C08G18/00 ,  C08G18/65 ,  C08G18/66 ,  C09D5/23 ,  G11B5/702 ,  G11B5/68 ,  C09D3/72

公开(公告)号：DE2318910A1

公开(公告)日：1974-10-31

申请号：DE2318910

申请日：1973-04-14

Applicant: BASF AG

Inventor： VAETH GUENTER ,  BACHMANN RUDOLF DIPL CHEM DR ,  SENKPIEL WERNER DIPL CHEM DR ,  HARTMANN HANS-JOERG DIPL ING D ,  FALK ROLAND DIPL CHEM DR ,  MOTZ HERBERT DIPL ING DR

IPC: C09D5/23 ,  G11B5/702 ,  G11B5/68

Abstract: The invention relates to magnetic recording media comprising a non-magnetic base and, applied thereto, a firmly adhering magnetic coating based on a finely divided magnetic pigment and a special binder mixture. This binder mixture consists essentially of 20 to 90 percent by weight of an elastomeric polyurethane which is soluble in a volatile organic solvent, is practically free of isocyanate groups and has been obtained from a linear, aliphatic polyester or polyether and a diisocyanate of 6 to 24 carbon atoms, and of 10 to 80 percent by weight of a vinyl chloride copolymer which contains 50 to 90 percent by weight of vinyl chloride units and 10 to 50 percent by weight of units of one or more diesters of maleic acid with an alcohol of 1 to 3 carbon atoms, or of the reaction product of this binder mixture with a polyisocyanate of 6 to 50 carbon atoms. Magnetic coatings containing such a binder mixture are distinguished by improved surface hardness coupled with improved orientability of the magnetic particles, as a result of which such recording media are particularly suitable for modern video- and audio-recording instruments.

公开(公告)号：DE3136982A1

公开(公告)日：1983-03-31

申请号：DE3136982

申请日：1981-09-17

Applicant: BASF AG

Inventor： BACHMANN RUDOLF DIPL CHEM DR ,  BALZ WERNER DIPL CHEM DR ,  GRAU WERNER DIPL CHEM DR ,  GUTERMANN WINFRIED ,  KOVACS JENOE DIPL CHEM DR ,  KRUCKER KARL DIPL CHEM DR ,  RUDOLF PETER ING GRAD ,  SCHAEFER DIETER DIPL CHEM DR ,  HACK JOACHIM DIPL ING

IPC: C09D5/23 ,  C09D137/00 ,  G11B5/70 ,  G11B5/702 ,  G11B5/68 ,  B05D5/12

公开(公告)号：DE3005035A1

公开(公告)日：1981-08-20

申请号：DE3005035

申请日：1980-02-11

Applicant: BASF AG

Inventor： LEHNER AUGUST ING GRAD ,  HARTMANN HEINRICH DIPL CHEM DR ,  HEIL GUENTER DIPL CHEM DR ,  LENZ WERNER DIPL CHEM DR ,  BUETHE INGOLF DIPL CHEM DR ,  BACHMANN RUDOLF DIPL CHEM DR

IPC: C08G18/00 ,  C08G18/67

Abstract: A process for the preparation of polymerizable, primarily linear thermoplastic polyurethane elastomers with acrylate side groups comprising reacting an organic polyisocyanate with a mixture of (a) an acrylate diol having a molecular weight of 146 to 3000, (b) an organic polyhydroxyl compound other than those of paragraph (a) having a molecular weight between 400 and 5000, and (c) a chain extender selected from the group consisting of diols, diamines, aminoalcohols, and triols, having molecular weights between 61 and 400, water, and mixtures thereof wherein the ratio of isocyanate to active hydrogen containing groups is from 0.8:1 to 1.2:1 and wherein 1.4 to 1.8 moles of organic polyisocyante, 0 to 15 moles of component (c) and 0.3 to 6 moles of component (a) are used per mole of component (b). The polymerizable polyurethane elastomers may be used for the manufacture of molded parts, laminates, adhesives, coatings, magnetic tapes, and other articles.

公开(公告)号：DE3005009A1

公开(公告)日：1981-08-20

申请号：DE3005009

申请日：1980-02-11

Applicant: BASF AG

Inventor： LEHNER AUGUST ING GRAD ,  HARTMANN HEINRICH DIPL CHEM DR ,  BACHMANN RUDOLF DIPL CHEM DR ,  BALZ WERNER DIPL CHEM DR ,  KOHL ALBERT

IPC: C08G18/08 ,  C08G18/83 ,  C09D5/23 ,  G11B5/70 ,  G11B5/702 ,  G11B5/842 ,  G11B5/68

Abstract: Magnetic recording media comprising a non-magnetic base and, applied thereto, one or more magnetizable layers based on an anisotropic magnetic material finely dispersed in an organic binder containing an ionomeric polyurethane elastomer, wherein the binder used is a substantially aqueous polyurethane dispersion prepared from a polyurethane solution which has been obtained by reacting a polyisocyanate with an organic polyhydroxy compound in the presence of an organic solvent that is inert to isocyanate groups.