公开(公告)号：NO20032794L

公开(公告)日：2003-08-19

申请号：NO20032794

申请日：2003-06-19

Applicant: BASF AG

Inventor： WENDEROTH BERND ,  MESZAROS LADISLAUS ,  DAMBACH STEFAN ,  FIDORRA UWE ,  BERGEMANN MARCO

IPC: C09K3/00 ,  C09K5/08 ,  C09K5/20 ,  H01M8/04 ,  H01M8/10

Abstract: The invention relates to antifreeze concentrates for cooling systems in fuel cell drives, from which are produced ready-to-use aqueous cooling agent compositions having a maximum conductivity of 50 mus/cm, based on alkylene glycols or the derivatives thereof, and containing orthosilicic acid esters of formula (I) wherein the variables R 1 to R 4 are the same or different and represent C 1 -C 20 alkyl substituents, C 2 -C 20 alkenyl substituents, C 1 -C 20 hydroxyalkyl substituents, optionally substituted C 6 -C 12 aryl substituents and/or glycol ether substituents of formula (CH 2 -CH 2 -O) n -R 5 wherein R 5 represents hydrogen or C 1 -C 5 alkyl and n represents a number between 1 and 5

公开(公告)号：CA2430443A1

公开(公告)日：2002-07-18

申请号：CA2430443

申请日：2001-12-14

Applicant: BASF AG

Inventor： FIDORRA UWE ,  BERGEMANN MARCO ,  MESZAROS LADISLAUS ,  WENDEROTH BERND ,  DAMBACH STEFAN

IPC: C09K3/00 ,  C09K5/08 ,  C09K5/20 ,  H01M8/04 ,  H01M8/10

Abstract: The invention relates to antifreeze concentrates for cooling systems in fuel cell drives, from which are produced ready-to-use aqueous cooling agent compositions having a maximum conductivity of 50 .mu.s/cm, based on alkylene glycols or the derivatives thereof, and containing orthosilicic acid esters of formula (I) wherein the variables R1 to R4 are the same or different and represent C1-C20 alkyl substituents, C2-C20 alkenyl substituents, C1-C20 hydroxyalkyl substituents, optionally substituted C6-C12 aryl substituents and/or glycol ether substituents of formula (CH2-CH2-O)n-R5 wherein R5 represents hydrogen or C1-C5 alkyl and n represents a number between 1 and 5.

公开(公告)号：DE10063951A1

公开(公告)日：2002-06-27

申请号：DE10063951

申请日：2000-12-20

Applicant: BASF AG

Inventor： WENDEROTH BERND ,  MESZAROS LADISLAUS ,  DAMBACH STEFAN ,  FIDORRA UWE ,  BERGEMANN MARCO

IPC: C09K3/00 ,  C09K5/08 ,  C09K5/20 ,  H01M8/04 ,  H01M8/10

Abstract: An antifreeze concentrate for use in fuel cell cooling systems which gives a ready-to-use aqueous cooling composition of maximum conductivity 50 mu S/cm is based on an alkylene glycol or derivative containing a specified ortho-silicic acid ester as corrosion inhibitor. An antifreeze concentrate for use in fuel cell cooling systems which gives a ready-to-use aqueous cooling composition of maximum conductivity 50 mu S/cm is based on an alkylene glycol or derivative containing an ortho-silicic acid ester of formula (I). Si(OR )(OR )(OR )(OR ) (I) R -R = 1-20C alkyl, 2-20C alkenyl or 1-20C hydroxyalkyl, optionally substituted 6-12C aryl and/or a glycol ether substituent of formula -(CH2CH2O)n-R ; R = H or 1-5C alkyl; and n = 1-5.