公开(公告)号：ES2053494T3

公开(公告)日：1994-08-01

申请号：ES87113595

申请日：1987-09-17

Applicant: BASF AG

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

IPC: C08F290/00 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C08F2/06 ,  C08F4/32 ,  C08F8/12 ,  C08F20/02 ,  C08F20/10 ,  C08F220/20 ,  C08F222/02 ,  C08F222/06 ,  C08F299/02

Abstract: Slightly crosslinked, water-soluble polymaleic acid which is obtainable by polymerization of maleic anhydride with from 0.1 to 10% by weight of a crosslinking agent in an aromatic hydrocarbon at from 60 DEG to 200 DEG C. in the presence of from 1 to 20% by weight, based on maleic anhydride, of a peroxyester, and hydrolysis of the polymer to give slightly crosslinked polymaleic acid having a Fikentscher K value of from 8 to 20 (measured at 20 DEG C. in 5% strength aqueous solution at pH 7 as the Na salt), a process for the preparation of slightly crosslinked polymaleic acid, and its use as a water treatment agent for reducing boiler scale and hard water deposits in water-conveying systems.

公开(公告)号：DE3863311D1

公开(公告)日：1991-07-25

申请号：DE3863311

申请日：1988-03-26

Applicant: BASF AG

Inventor： BAUR RICHARD DR ,  RICHTER FELIX DR ,  BIRNBACH STEFAN DR ,  FIKENTSCHER ROLF DR ,  OFTRING ALFRED DR ,  WINKLER EKHARD DR ,  BOCHNITSCHEK WERNER DR

IPC: G01N31/00 ,  C07C67/00 ,  C07C227/16 ,  C07C227/18 ,  C07C229/22 ,  C07C229/24 ,  C07C229/76 ,  C07C231/00 ,  C07C231/12 ,  C07C237/06 ,  C07C253/00 ,  C07C253/30 ,  C07C255/18 ,  C07C255/24 ,  C07C255/26 ,  C09K3/00 ,  C11D3/33 ,  C11D3/39

Abstract: 2-Hydroxy-3-aminopropionic-N,N-diacetic acid and derivatives thereof are used in particular as complexing agents, bleaching agent stabilizers and builders in detergents.

公开(公告)号：DE3865698D1

公开(公告)日：1991-11-28

申请号：DE3865698

申请日：1988-02-20

Applicant: BASF AG

Inventor： BAUR RICHARD DR ,  FIKENTSCHER ROLF DR ,  OFTRING ALFRED DR ,  RICHTER FELIX DR ,  TRIESELT WOLFGANG DR ,  DIESSEL PAUL ,  WINKLER EKHARD DR ,  PERNER JOHANNES DR

IPC: C11D3/20 ,  C07C41/00 ,  C07C41/50 ,  C07C43/30 ,  C07C67/00 ,  C08G4/00 ,  C08G16/02 ,  C09K3/00 ,  C11D3/37

Abstract: New polyacetals (A) are prepd. by reacting (a) a dialdehyde OHC-(-A-)n-CHO (I) with (b) a polyol carboxylic acid (II) contg. 5-7C and at least 3 OH gps., with mole ratio 1:0.25-4, in aq. medium and in presence of acid catalyst. A = (CH2)m, -CH2-C(Me)H-CH2- or 1,4-phenylene; m = 1-4; n = 0 or 1. Pref. reaction is at up to 140 deg.C and water is removed from the mixt. during reaction.

公开(公告)号：AT64592T

公开(公告)日：1991-07-15

申请号：AT88104891

申请日：1988-03-26

Applicant: BASF AG

Inventor： BAUR RICHARD DR ,  RICHTER FELIX DR ,  BIRNBACH STEFAN DR ,  FIKENTSCHER ROLF DR ,  OFTRING ALFRED DR ,  WINKLER EKHARD DR ,  BOCHNITSCHEK WERNER DR

IPC: G01N31/00 ,  C07C67/00 ,  C07C227/16 ,  C07C227/18 ,  C07C229/22 ,  C07C229/24 ,  C07C229/76 ,  C07C231/00 ,  C07C231/12 ,  C07C237/06 ,  C07C253/00 ,  C07C253/30 ,  C07C255/18 ,  C07C255/24 ,  C07C255/26 ,  C09K3/00 ,  C11D3/33 ,  C11D3/39

公开(公告)号：DE3712330A1

公开(公告)日：1988-10-20

申请号：DE3712330

申请日：1987-04-11

Applicant: BASF AG

Inventor： BAUR RICHARD DR ,  RICHTER FELIX DR ,  BIRNBACH STEFAN DR ,  FIKENTSCHER ROLF DR ,  OFTRING ALFRED DR ,  WINKLER EKHARD DR ,  BOCHNITSCHEK WERNER DR

IPC: G01N31/00 ,  C07C67/00 ,  C07C227/16 ,  C07C227/18 ,  C07C229/22 ,  C07C229/24 ,  C07C229/76 ,  C07C231/00 ,  C07C231/12 ,  C07C237/06 ,  C07C253/00 ,  C07C253/30 ,  C07C255/18 ,  C07C255/24 ,  C07C255/26 ,  C09K3/00 ,  C11D3/33 ,  C11D3/39 ,  C07C101/30 ,  C07C121/453

Abstract: 2-Hydroxy-3-aminopropionic-N,N-diacetic acid and derivatives thereof are used in particular as complexing agents, bleaching agent stabilizers and builders in detergents.

公开(公告)号：ES2061461T3

公开(公告)日：1994-12-16

申请号：ES87113592

申请日：1987-09-17

Applicant: BASF AG

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

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

Abstract: A process for the preparation of polymaleic acid by polymerizing maleic anhydride in an aromatic hydrocarbon at from 60 DEG to 200 DEG 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：DE3789083D1

公开(公告)日：1994-03-24

申请号：DE3789083

申请日：1987-09-17

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH DR ,  GOECKEL ULRICH DR ,  RICHTER FELIX DR ,  WINKLER EKHARD DR ,  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

Abstract: A process for the preparation of polymaleic acid by polymerizing maleic anhydride in an aromatic hydrocarbon at from 60 DEG to 200 DEG 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：DE3868118D1

公开(公告)日：1992-03-12

申请号：DE3868118

申请日：1988-04-02

Applicant: BASF AG

Inventor： BAUR RICHARD DR ,  RICHTER FELIX DR ,  BIRNBACH STEFAN DR ,  FIKENTSCHER ROLF DR ,  OFTRING ALFRED DR ,  WINKLER EKHARD DR

IPC: C11D3/26 ,  C07C67/00 ,  C07C229/22 ,  C07C229/32 ,  C07C231/00 ,  C07C231/12 ,  C07C237/06 ,  C07C253/00 ,  C07C255/18 ,  C07C255/24 ,  C09K3/00 ,  C11D3/33 ,  C11D3/39

Abstract: Various new processes are claimed for the prodn. of serine N,N-diacetic acid and N,N-diacetonitrile derivs. if formula (I): (where Y is COOH (opt. in the form of an alkali metal, ammonium or substd. ammonium salt) or CH; and X is COOH (opt. in the form of an alkali metal, ammonium or substd. ammonium salts), CN or a residue CONR3R4 in which R3 and R4 are H or 1-4C alkyl; X not being CN when Y is COOH). The use of serine-N,N-diacetic acid (I,X=COOH, Y=COOH) and its Na, K, ammonium and organic amine salts as complexing agents for heavy metals and/or alkaline earth ions and an building agents and bleach stabilisers in washing and cleaning agents is now. Detergents and cleaning agents contg. 0.01-20 wt.% of (I) (X other than CN) are new and claimed. Serine-N,N-diacetonitrile (i.e. (I,X COOH, Y=CN)) is new and claimed per se.

公开(公告)号：DE3706036A1

公开(公告)日：1988-09-08

申请号：DE3706036

申请日：1987-02-25

Applicant: BASF AG

Inventor： BAUR RICHARD DR ,  FIKENTSCHER ROLF DR ,  OFTRING ALFRED DR ,  RICHTER FELIX DR ,  TRIESELT WOLFGANG DR ,  DIESSEL PAUL ,  WINKLER EKHARD DR ,  PERNER JOHANNES DR

IPC: C11D3/20 ,  C07C41/00 ,  C07C41/50 ,  C07C43/30 ,  C07C67/00 ,  C08G4/00 ,  C08G16/02 ,  C09K3/00 ,  C11D3/37 ,  C07C41/48 ,  C07C43/307 ,  C07C43/303

Abstract: Polyacetals obtainable by reaction of (a) a dialdehyde of the formula OHC-An-CHO where A=C1-C4-alkylene or and n is 0 or 1, is reacted with (b) a polycarboxylic acid of 5 to 7 carbon atoms which contains not less than 3 OH groups, in a molar ratio (a):(b) of 1:0.25 to 4 in an aqueous medium in the presence of an acid catalyst, are used as additives in washing agents and as complexing agents for heavy metal ions.

公开(公告)号：DE3631815A1

公开(公告)日：1988-03-31

申请号：DE3631815

申请日：1986-09-19

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH DR ,  GOECKEL ULRICH DR ,  RICHTER FELIX DR ,  WINKLER EKHARD DR ,  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 ,  C08F122/04

Abstract: A process for the preparation of polymaleic acid by polymerizing maleic anhydride in an aromatic hydrocarbon at from 60 DEG to 200 DEG 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.