公开(公告)号：DE59305271D1

公开(公告)日：1997-03-06

申请号：DE59305271

申请日：1993-04-20

Applicant: BASF AG

Inventor： MEYER HARALD ,  SANNER AXEL ,  FROSCH FRANZ ,  RICHTER HANS

IPC: C08K5/41 ,  C08F16/12 ,  C08F216/14 ,  C08K3/00 ,  C08K3/30 ,  C08K3/32 ,  C08K5/00 ,  C08K5/1535 ,  C08L29/10 ,  C08L33/02 ,  C08L35/00 ,  C08L35/08

Abstract: PCT No. PCT/EP93/00954 Sec. 371 Date Sep. 30, 1994 Sec. 102(e) Date Sep. 30, 1994 PCT Filed Apr. 20, 1993 PCT Pub. No. WO93/22374 PCT Pub. Date Nov. 11, 1993A process for stabilizing a copolymer of maleic acid or maleic anhydride and vinyl alkyl ethers against a reduction in molecular weight in aqueous solution or in the solution of an organic solvent by adding 0.001 to 10% by weight, based on the copolymer, of a reducing agent, a tert-butyl-containing phenol or a mixture thereof.

公开(公告)号：ES2096294T3

公开(公告)日：1997-03-01

申请号：ES93911767

申请日：1993-04-20

Applicant: BASF AG

Inventor： MEYER HARALD ,  SANNER AXEL ,  FROSCH FRANZ ,  RICHTER HANS

IPC: C08F16/12 ,  C08F216/14 ,  C08K3/00 ,  C08K5/41 ,  C08K3/30 ,  C08K3/32 ,  C08K5/00 ,  C08K5/1535 ,  C08L29/10 ,  C08L33/02 ,  C08L35/00 ,  C08L35/08

Abstract: PCT No. PCT/EP93/00954 Sec. 371 Date Sep. 30, 1994 Sec. 102(e) Date Sep. 30, 1994 PCT Filed Apr. 20, 1993 PCT Pub. No. WO93/22374 PCT Pub. Date Nov. 11, 1993A process for stabilizing a copolymer of maleic acid or maleic anhydride and vinyl alkyl ethers against a reduction in molecular weight in aqueous solution or in the solution of an organic solvent by adding 0.001 to 10% by weight, based on the copolymer, of a reducing agent, a tert-butyl-containing phenol or a mixture thereof.

公开(公告)号：DE59304688D1

公开(公告)日：1997-01-16

申请号：DE59304688

申请日：1993-05-06

Applicant: BASF AG

Inventor： MEYER HARALD DR ,  DENZINGER WALTER ,  SANNER AXEL ,  RICHTER HANS ,  RAUBENHEIMER HANS-JUERGEN ,  FROSCH FRANZ

IPC: A61K8/72 ,  A61K8/00 ,  A61K8/81 ,  A61K47/32 ,  A61Q5/00 ,  A61Q5/06 ,  A61Q11/00 ,  C08F16/16 ,  C08F20/02 ,  C08F22/10 ,  C08F216/16 ,  C08F216/18 ,  C08F222/04 ,  C08F222/06 ,  C08F222/14 ,  C11D3/37 ,  C11D17/08 ,  A61K7/00

Abstract: Copolymers contain, as characteristic polymerized monomer units, (a) 2 to 50 mol % vinylalkylether with 3 to 30 C atoms in the molecule; (b) 10 to 88 mol % monoethylenically unsaturated dicarboxylic acid anhydrides and (c) 10 to 88 mol % dialkylesters of monoethylenically unsaturated dicarboxylic acids. A process is disclosed for producing these copolymers by copolymerizing the monomers (a), (b) and (c) at temperatures between 40 and 180 C in the presence of radical-building initiators. Also disclosed is the use of the copolymers as film forming resins in hair sprays and in the form of alkaline metal, ammonium or alkaline earth metal salts as thickeners for aqueous systems, such as cosmetic and pharmaceutical compositions, textile printing pastes, liquid washing and cleaning agents.

公开(公告)号：DE59200858D1

公开(公告)日：1995-01-12

申请号：DE59200858

申请日：1992-02-28

Applicant: BASF AG

Inventor： RICHTER HANS ,  SCHWAB EKKEHARD ,  JAKUSCH HELMUT ,  HIBST HARTMUT ,  GRAU WERNER ,  KNELLER ECKHART ,  HAWIG REINHARDT

IPC: C21D6/00 ,  C22C38/00 ,  G11B5/64 ,  G11B5/706 ,  H01F1/00 ,  H01F1/03 ,  H01F1/053 ,  H01F1/057 ,  H01F10/12 ,  H01F10/13 ,  H01F41/02 ,  H01F41/14 ,  H01Q17/00 ,  H02K1/02 ,  H05K9/00

公开(公告)号：CA2134330A1

公开(公告)日：1993-10-30

申请号：CA2134330

申请日：1993-04-20

Applicant: BASF AG

Inventor： MEYER HARALD ,  SANNER AXEL ,  FROSCH FRANZ ,  RICHTER HANS

IPC: C08K5/41 ,  C08F16/12 ,  C08F216/14 ,  C08K3/00 ,  C08K3/30 ,  C08K3/32 ,  C08K5/00 ,  C08K5/1535 ,  C08L29/10 ,  C08L33/02 ,  C08L35/00 ,  C08L35/08

Abstract: A process for stabilizing a copolymer of maleic acid or maleic anhydride and vinyl alkyl ethers against a reduction in molecular weight in aqueous solution or in the solution of an organic solvent by adding 0.001 to 10 % by weight, based on the copolymer, of a reducing agent, a tert-butyl-containing phenol or a mixture thereof.

公开(公告)号：ES2095051T3

公开(公告)日：1997-02-01

申请号：ES93909900

申请日：1993-05-06

Applicant: BASF AG

Inventor： MEYER HARALD DR ,  DENZINGER WALTER ,  SANNER AXEL ,  RICHTER HANS ,  RAUBENHEIMER HANS-JUERGEN ,  FROSCH FRANZ

IPC: A61K8/72 ,  A61K8/00 ,  A61K8/81 ,  A61K47/32 ,  A61Q5/00 ,  A61Q5/06 ,  A61Q11/00 ,  C08F16/16 ,  C08F20/02 ,  C08F22/10 ,  C08F216/16 ,  C08F216/18 ,  C08F222/04 ,  C08F222/06 ,  C08F222/14 ,  C11D3/37 ,  C11D17/08 ,  A61K7/00

Abstract: Copolymers contain, as characteristic polymerized monomer units, (a) 2 to 50 mol % vinylalkylether with 3 to 30 C atoms in the molecule; (b) 10 to 88 mol % monoethylenically unsaturated dicarboxylic acid anhydrides and (c) 10 to 88 mol % dialkylesters of monoethylenically unsaturated dicarboxylic acids. A process is disclosed for producing these copolymers by copolymerizing the monomers (a), (b) and (c) at temperatures between 40 and 180 C in the presence of radical-building initiators. Also disclosed is the use of the copolymers as film forming resins in hair sprays and in the form of alkaline metal, ammonium or alkaline earth metal salts as thickeners for aqueous systems, such as cosmetic and pharmaceutical compositions, textile printing pastes, liquid washing and cleaning agents.