公开(公告)号：CA2051678A1

公开(公告)日：1990-11-14

申请号：CA2051678

申请日：1990-05-10

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH ,  GOUSETIS CHARALAMPOS ,  GOECKEL ULRICH ,  RULAND ALFRED

IPC: C02F1/00 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/12 ,  C02F5/14 ,  C08F20/02 ,  C08F26/06 ,  C08F220/04 ,  C08F220/06 ,  C08F222/02 ,  C08F226/06

Abstract: O.Z. 0050/40810 Water-soluble copolymers which contain, polymerized in, as characteristic monomers (a) 99 to 50% by weight of monoethylenically unsaturated carboxylic acids with 3 to 8 carbon atoms or their salts and (b) 1 to 50 % by weight of N-vinylLmidazole or sub stituted N-vinylimidazoles, their salts or products of quaternization and which have K values of from 10 to 50 are used for water treatment to reduce deposits of scale and sludge in water-conveying systems.

公开(公告)号：DE3700535A1

公开(公告)日：1988-07-21

申请号：DE3700535

申请日：1987-01-10

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH ,  GOECKEL ULRICH ,  RICHTER FELIX ,  RAUBENHEIMER HANS-JUERGEN ,  WINKLER EKHARD

IPC: C23F14/02 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/12 ,  C02F5/14 ,  C08F2/04 ,  C08F2/06 ,  C08F4/32 ,  C08F20/02 ,  C08F222/06 ,  C08F222/02 ,  C08F8/12 ,  C08F267/02

Abstract: A process wherein… (a) from 99 to 80 % by weight of maleic anhydride and… (b) from 1 to 20 % by weight of a monoethylenically unsaturated monomer which can be copolymerised with maleic anhydride, and, if desired,… (c) up to 10 % by weight of a crosslinking agent… are copolymerised in an aromatic hydrocarbon at a temperature of from 60 to 200 DEG C in the presence of a peroxy ester derived from a saturated or monoethylenically unsaturated carboxylic acid, and the anhydride groups of the copolymer are subsequently hydrolysed. … The copolymers prepared in this way are used as water-treatment agents.

公开(公告)号：CA1336117C

公开(公告)日：1995-06-27

申请号：CA555765

申请日：1988-01-04

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH ,  GOECKEL ULRICH ,  RICHTER FELIX ,  RAUBENHEIMER HANS-JUERGEN ,  WINKLER EKHARD

IPC: C23F14/02 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/12 ,  C02F5/14 ,  C08F2/04 ,  C08F2/06 ,  C08F4/32 ,  C08F20/02 ,  C08F222/06

Abstract: Water-soluble copolymers of maleic acid useful as water treatment agents are prepared by copolymerizing (a) from 99 to 80% by weight of maleic anhydride and (b) from 1 to 20% by weight of a monoethylenically unsaturated monomer copolymerizable therewith and, facultatively, (c) up to 10% by weight of a crosslinker, at from 60 to 200.degree.C in an aromatic hydrocarbon in the presence of peroxyesters derived from saturated or monoethylenically unsaturated carboxylic acids, and hydrolyzing the anhydride groups of the copolymers following the polymerization.

公开(公告)号：DE3686916D1

公开(公告)日：1992-11-12

申请号：DE3686916

申请日：1986-07-04

Applicant: BASF AG

Inventor： GOECKEL ULRICH ,  PETERSEN HARRO ,  OSTERLOH ROLF ,  SCHUPP EBERHARD ,  LOCH WERNER ,  SCHWERZEL THOMAS

IPC: C07D239/10 ,  C08G12/02 ,  C08G12/10 ,  C08G12/40 ,  C08G14/06 ,  C08G18/38 ,  C08G18/54 ,  C09D5/44 ,  C09D161/34

Abstract: The prods. (I) essentially contain structures of general formula (1) and/or (2) where R1 = at least divalent 4-20C straight or branched alkylene, cycloalkylene, oxa-alkylene, or aza-alkylene gp., opt. contg. at least one (a) OH gp. and/or (b) urea, carbamate, carbonamide, or sulphonamide gp. substd. by hydroxyalkyl, hydroxycycloalkyl, hydroxyoxa-alkyl and/or aza-alkyl gps.; R2, R3, R4, R5, R6 are same or different (in each ring and/or in different rings) and = H, 1-18C alkyl, 5-15C cycloalkyl, 6-15C aryl,7-16C aralkyl, 2-18C oxa-alkyl, or 2-18C aza-alkyl, with provisos that when R2 = hydroxyalkyl this has 4-18C and R2 cannot be aryl or aralkyl; n = 2-20.

公开(公告)号：DE3774863D1

公开(公告)日：1992-01-09

申请号：DE3774863

申请日：1987-12-22

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH ,  GOECKEL ULRICH ,  RICHTER FELIX ,  RAUBENHEIMER HANS-JUERGEN ,  WINKLER EKHARD

IPC: C23F14/02 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/12 ,  C02F5/14 ,  C08F2/04 ,  C08F2/06 ,  C08F4/32 ,  C08F20/02 ,  C08F222/06

Abstract: Water-soluble maleic acid copolymers (I) are prepd. by copolymerising 99-80 (wt.)% maleic anhydride (II) and 1-20% mono-ethylenically unsatd. comonomer (III) in an aromatic hydrocarbon (IV) at 60-200 deg.C in the presence of 1-20% polymerisation initiators (V) w.r.t. (II)+(III) and hydrolysis of the anhydride gps. in the copolymer. The novelty is that (V) are peroxy-esters derived from satd. or monoethylenically unsatd. carboxylic acids. Pref. the amts. used are 98-90% (II), 2-10% (III) and 5-16% (V) w.r.t. (II) + (III). Up to 10 (0.2-5)% crosslinked (VI) with at least 2 ethylenically unsatd. double bonds can be added w.r.t. (II)+(III))+(VI).

公开(公告)号：AU6949591A

公开(公告)日：1991-07-25

申请号：AU6949591

申请日：1991-01-22

Applicant: BASF AG

Inventor： GOUSETIS CHARALAMPOS ,  GOECKEL ULRICH ,  BUECHNER KARL-HEINZ ,  DENZINGER WALTER ,  HARTMANN HEINRICH

IPC: C08L33/02 ,  C02F5/10 ,  C02F5/12 ,  C08F26/00 ,  C08F26/02 ,  C08L39/00 ,  C08L39/02

公开(公告)号：CA1268774A

公开(公告)日：1990-05-08

申请号：CA545856

申请日：1987-09-01

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH ,  GOECKEL ULRICH ,  RICHTER FELIX ,  WINKLER EKHARD ,  RAUBENHEIMER HANS-JUERGEN

IPC: C08F4/28 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C08F2/06 ,  C08F4/32 ,  C08F4/34 ,  C08F8/12 ,  C08F20/02 ,  C08F22/02 ,  C08F22/06 ,  C08F122/02 ,  C08F120/08

Abstract: A process for the preparation of polymaleic acid by polymerizing maleic anhydride in an aromatic hydrocarbon at from 60 to 200.degree.C, using from 1 to 20% by weight, based on maleic anhydride, of peroxyesters derived from saturated or ethylenically unsaturated carboxylic acids, as the polymerization initiators and hydrolyzing the polymer, the polymaleic acid thus obtained and the use of the polymaleic acid as an agent for reducing scale formation and hard water deposits in systems through which water flows.

公开(公告)号：ES2000685A6

公开(公告)日：1988-03-16

申请号：ES8600351

申请日：1986-07-17

Applicant: BASF AG

Inventor： GOECKEL ULRICH ,  PETERSEN HARRO ,  OSTERLOH ROLF ,  SCHUPP EBERHARD ,  LOCH WERNER ,  SCHWERZEL THOMAS

IPC: C07D239/10 ,  C08G12/02 ,  C08G12/10 ,  C08G12/40 ,  C08G14/06 ,  C08G18/38 ,  C08G18/54 ,  C09D5/44 ,  C09D161/34 ,  C09D3/52 ,  C09D5/02

Abstract: PROCEDIMIENTO PARA LA OBTENCION DE PRODUCTOS DE CONDENSACION A BASE DE PROPILENUREAS SUSTITUIDAS, QUE CONTIENEN AL MENOS DOS UNIDADES CICLICAS DE UREA, DE LOS PRODUCTOS DE REACCION DE ESTOS PRODUCTOS DE CONDENSACION CON DI- Y/O POLIISOCIANATOS, DERIVADOS DE ACIDOS DI Y/O POLICARBOXILICOS O FENOLES P-SUSTITUIDOS Y/O SUS O-METILOLDERIVADOS ASI COMO A UN PROCEDIMIENTO PARA LA OBTENCION DE AGENTES DE RECUBRIMIENTO TERMOENDURECIBLES.