公开(公告)号：CA2336644A1

公开(公告)日：2000-01-20

申请号：CA2336644

申请日：1999-07-08

Applicant: BASF AG

Inventor： OPPENLANDER KNUT ,  GUNTHER WOLFGANG ,  MESZAROS LADISLAUS ,  GILLICH MICHAEL ,  PFITZNER KLAUS

IPC: C09K5/08 ,  C09K5/20 ,  C09K15/06 ,  C09K15/12 ,  C09K15/30 ,  C23F11/10 ,  C23F11/16

Abstract: The invention relates to antifreeze concentrates which are characterized in that they a) comprise at least one alcohol which can be mixed with water and which lowers the freezing point; b) at least one corrosion inhibitor; and c) at least one mononuclear or polynuclear aromatic component which carries at least one hydroxyl group, has a high buffering capacity in the pH range of approximately 6 to 10, and which is used as a reserve alkalinity dispenser. The invention also relates to coolant compositions containing these antifree ze concentrates for cooling circuits in internal combustion engines.

公开(公告)号：CA2234844A1

公开(公告)日：1997-08-21

申请号：CA2234844

申请日：1997-02-13

Applicant: BASF AG

Inventor： OPPENL NDER KNUT ,  GUENTHER WOLFGANG ,  PFITZNER KLAUS ,  GILLICH MICHAEL ,  MESZAROS LADISLAUS

IPC: C09K5/00 ,  C23F11/14

Abstract: The invention concerns the use as corrosion-inhibitors of quaternized imidazoles (I), wherein R1 and R3, independently of each other, designate saturated or unsaturated C1-C12 hydrocarbon groups which can be substituted by groups having an oxygen function or interrupted by non-adjacent oxygen atoms; R2, R4 and R5, independently of one another, designate hydrogen or saturated or unsaturated C1-C12 hydrocarbon groups which can be substituted by groups having an oxygen function or interrupted by non-adjacent oxygen atoms, R4 and R5 being able to form a five- or six-member ring together with the corresponding imidazole carbon atoms; and XO stands for an anion. These substances are used for protecting nonferrous metals against corrosion, in particular for protecting radiators in the automotive field.

公开(公告)号：CA2234844C

公开(公告)日：2006-04-04

申请号：CA2234844

申请日：1997-02-13

Applicant: BASF AG

Inventor： GUNTHER WOLFGANG ,  MESZAROS LADISLAUS ,  OPPENLANDER KNUT ,  PFITZNER KLAUS ,  GILLICH MICHAEL

IPC: C09K5/00 ,  C09K5/20 ,  C23F11/08 ,  C23F11/14 ,  C23G1/06

Abstract: Quaternized imidazoles I (see formula I) in which R1 and R3 independently of one another are saturated or unsaturated hydrocarbon radicals of 1-12 carbon atoms which can be substituted by oxygen-functional groups or interrupted by nonadjacent oxygens, R2, R4 and R5 independently of one another are hydrogen or saturated or unsaturated hydrocarbon radicals of 1-12 carbon atoms which can be substituted by oxygen-functional groups or interrupted by nonadjacent oxygens, it being possible for R4 and R5, together with the corresponding imidazole carbons, to form a five- or six-membered ring, and X.THETA. is an anion, are used as corrosion inhibitors in the corrosion protection of nonferrous metals, especially for car radiator protection.

公开(公告)号：AT224939T

公开(公告)日：2002-10-15

申请号：AT99939996

申请日：1999-07-08

Applicant: BASF AG

Inventor： OPPENLAENDER KNUT ,  GUENTHER WOLFGANG ,  PFITZNER KLAUS ,  GILLICH MICHAEL ,  MESZAROS LADISLAUS

IPC: C09K5/08 ,  C09K5/20 ,  C09K15/06 ,  C09K15/12 ,  C09K15/30 ,  C23F11/10 ,  C23F11/16

Abstract: A description is given of antifreeze concentrates which comprisea) at least one water-miscible alcohol which lowers the freezing point;b) at least one corrosion inhibitor; andc) as reserve alkalinity donor, at least one mono- or polycyclic aromatic compound which has at least one hydroxyl group and a high buffer capacity in the pH range from about 6 to 10and of coolant compositions which comprise said concentrates and are intended for the cooling circuits in internal combustion engines.

公开(公告)号：DE19830819A1

公开(公告)日：2000-01-13

申请号：DE19830819

申请日：1998-07-09

Applicant: BASF AG

Inventor： OPPENLAENDER KNUT ,  GUENTHER WOLFGANG ,  PFITZNER KLAUS ,  GILLICH MICHAEL ,  MESZAROS LADISLAUS

IPC: C09K5/08 ,  C09K5/20 ,  C09K15/06 ,  C09K15/12 ,  C09K15/30 ,  C23F11/10 ,  C23F11/16 ,  C09K5/00 ,  C07C317/22 ,  C07C309/42 ,  C07C65/21 ,  C07C65/05

Abstract: The invention relates to antifreeze concentrates which are characterized in that they a) comprise at least one alcohol which can be mixed with water and which lowers the freezing point; b) at least one corrosion inhibitor; and c) at least one mononuclear or polynuclear aromatic component which carries at least one hydroxyl group, has a high buffering capacity in the pH range of approximately 6 to 10, and which is used as a reserve alkalinity dispenser. The invention also relates to coolant compositions containing these antifreeze concentrates for cooling circuits in internal combustion engines.

公开(公告)号：MX9804557A

公开(公告)日：1998-09-30

申请号：MX9804557

申请日：1998-06-08

Applicant: BASF AG

Inventor： MESZAROS LADISLAUS ,  GILLICH MICHAEL ,  PFITZNER KLAUS ,  OPPENLANDER KNUT ,  GUNTHER WOLFGANG

IPC: C07D233/60 ,  C09K5/00 ,  C09K5/20 ,  C23F1/14 ,  C23F11/08 ,  C23F11/14 ,  C23G1/06 ,  C09K05/00 ,  C23F01/14 ,  C23G01/06

Abstract: Imidazoles cuaternarios I, en donde R1 y R3, independientemente una de la otra, son radicales de hidrocarburos saturados o no saturados de 1-12 átomos de carbono que se pueden substituir por grupos funcionales de oxígeno o interrumpidos por oxígeno no adyacentes, R2, R4 y R5 independientemente uno del otro son radicales hidrogeno o hidrocarburos o saturados o no saturados de 1-12 átomos de carbono que se pueden substituir con grupos funcionales de oxígeno o interrumpidos mediante oxígenos no adyacentes; es posible que R4 y R5, junto con los carbones de imidazoles correspondientes formen un anillo de cinco o seis miembros, y X es un anion, se utilizan como anticorrosivos en la proteccion a la corrosion de los metales no ferrosos, especialmente para la proteccion del radiador del automovil.

公开(公告)号：ES2185390T3

公开(公告)日：2003-04-16

申请号：ES99939996

申请日：1999-07-08

Applicant: BASF AG

Inventor： OPPENLANDER KNUT ,  GUNTHER WOLFGANG ,  PFITZNER KLAUS ,  GILLICH MICHAEL ,  MESZAROS LADISLAUS

IPC: C09K5/08 ,  C09K5/20 ,  C09K15/06 ,  C09K15/12 ,  C09K15/30 ,  C23F11/10 ,  C23F11/16

Abstract: A description is given of antifreeze concentrates which comprisea) at least one water-miscible alcohol which lowers the freezing point;b) at least one corrosion inhibitor; andc) as reserve alkalinity donor, at least one mono- or polycyclic aromatic compound which has at least one hydroxyl group and a high buffer capacity in the pH range from about 6 to 10and of coolant compositions which comprise said concentrates and are intended for the cooling circuits in internal combustion engines.

公开(公告)号：PT1098949E

公开(公告)日：2003-02-28

申请号：PT99939996

申请日：1999-07-08

Applicant: BASF AG

Inventor： OPPENLAENDER KNUT ,  GUNTHER WOLFGANG ,  PFITZNER KLAUS ,  GILLICH MICHAEL ,  MESZAROS LADISLAUS

IPC: C09K5/08 ,  C09K5/20 ,  C09K15/06 ,  C09K15/12 ,  C09K15/30 ,  C23F11/10 ,  C23F11/16

Abstract: A description is given of antifreeze concentrates which comprisea) at least one water-miscible alcohol which lowers the freezing point;b) at least one corrosion inhibitor; andc) as reserve alkalinity donor, at least one mono- or polycyclic aromatic compound which has at least one hydroxyl group and a high buffer capacity in the pH range from about 6 to 10and of coolant compositions which comprise said concentrates and are intended for the cooling circuits in internal combustion engines.

公开(公告)号：DE59902866D1

公开(公告)日：2002-10-31

申请号：DE59902866

申请日：1999-07-08

Applicant: BASF AG

Inventor： OPPENLAENDER KNUT ,  GUENTHER WOLFGANG ,  PFITZNER KLAUS ,  GILLICH MICHAEL ,  MESZAROS LADISLAUS

IPC: C09K5/08 ,  C09K5/20 ,  C09K15/06 ,  C09K15/12 ,  C09K15/30 ,  C23F11/10 ,  C23F11/16

Abstract: A description is given of antifreeze concentrates which comprisea) at least one water-miscible alcohol which lowers the freezing point;b) at least one corrosion inhibitor; andc) as reserve alkalinity donor, at least one mono- or polycyclic aromatic compound which has at least one hydroxyl group and a high buffer capacity in the pH range from about 6 to 10and of coolant compositions which comprise said concentrates and are intended for the cooling circuits in internal combustion engines.

公开(公告)号：ES2140206T3

公开(公告)日：2000-02-16

申请号：ES97903264

申请日：1997-02-13

Applicant: BASF AG

Inventor： MESZAROS LADISLAUS ,  GILLICH MICHAEL ,  PFITZNER KLAUS ,  OPPENLANDER KNUT ,  GUNTHER WOLFGANG

IPC: C07D233/60 ,  C09K5/00 ,  C09K5/20 ,  C23F1/14 ,  C23F11/08 ,  C23F11/14 ,  C23G1/06

Abstract: PCT No. PCT/EP97/00648 Sec. 371 Date Aug. 11, 1998 Sec. 102(e) Date Aug. 11, 1998 PCT Filed Feb. 13, 1997 PCT Pub. No. WO97/30133 PCT Pub. Date Aug. 21, 1997Quaternized imidazoles I in which R1 and R3 independently of one another are saturated or unsaturated hydrocarbon radicals of 1-12 carbon atoms which can be substituted by oxygen-functional groups or interrupted by nonadjacent oxygens, R2, R4 and R5 independently of one another are hydrogen or saturated or unsaturated hydrocarbon radicals of 1-12 carbon atoms which can be substituted by oxygen-functional groups or interrupted by nonadjacent oxygens, it being possible for R4 and R5, together with the corresponding imidazole carbons, to form a five- or six-membered ring, and X(-) is an anion, are used as corrosion inhibitors in the corrosion protection of nonferrous metals, especially for car radiator protection.