公开(公告)号：US11759820B2

公开(公告)日：2023-09-19

申请号：US16877575

申请日：2020-05-19

申请人： Ewald Dörken AG

发明人： Melanie Müller ,  Marcel Roth ,  Ingo Klüppel

IPC分类号： C23C22/06 ,  C23C22/40 ,  C23C22/53 ,  B05D7/16 ,  C01B33/32 ,  C23C22/42 ,  C23C22/83 ,  C23C22/46

CPC分类号： B05D7/16 ,  C01B33/325 ,  C23C22/06 ,  C23C22/40 ,  C23C22/42 ,  C23C22/46 ,  C23C22/53 ,  C23C22/83 ,  C23C2222/20

摘要： The invention relates to a method for producing a silane-modified silicate. In order to obtain optimal corrosion protection properties, a silane compound according to the invention is at least partially hydrolyzed and/or condensed in the presence of a silicate compound at a pH value greater than or equal to 8 and then a pH value less than or equal to 7 is set by adding acid. The invention further relates to an aqueous acidic passivation composition for metal substrate coated with the passivation composition.

公开(公告)号：US10792702B2

公开(公告)日：2020-10-06

申请号：US15539879

申请日：2015-12-22

申请人： Ewald Dörken AG

发明人： Melanie Müller ,  Marcel Roth ,  Ingo Klüppel

IPC分类号： C23C22/06 ,  C23C22/48 ,  B05D7/16 ,  C01B33/32 ,  C23C22/42 ,  C23C22/83 ,  C23C22/53 ,  C23C22/40 ,  C23C22/46 ,  C23C22/00

摘要： The invention relates to a method for producing a silane-modified silicate. In order to obtain optimal corrosion protection properties, a silane compound according to the invention is at least partially hydrolyzed and/or condensed in the presence of a silicate compound at a pH value greater than or equal to 8 and then a pH value less than or equal to 7 is set by adding acid. The invention further relates to an aqueous acidic passivation composition for metal substrate coated with the passivation composition.