Dibutyltin oxide preparations and their use in catalysing...

Details Dibutyltin oxide preparations and their use in catalysing... Dibutyltin oxide preparations and their use in catalysing...

B - Operations, Transporting

01

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B01J 31/12 (2006.01) C08G 18/24 (2006.01) C09D 5/44 (2006.01) C09D 201/00 (2006.01)

Patent

CA 2062272

2697/US3600 ABSTRACT OF THE DISCLOSURE The invention relates to dibutyltin oxide compo- sitions, to a process for their production, and to their use in catalyzing the crosslinking reactions of cationic paint binders crosslinkable by transesterification and/or trans- urethanization. The dibutyltin oxide compositions are pre- pared by dispersion of dibutyltin oxide in a dispersion medium comprising at least one of a blocked polyisocyanate or a curing agent containing activated ester groups and, if appropriate, water-tolerant organic solvents inert to the dibutyltin oxide. The dibutyltin oxide compositions in com- bination with cationic modified epoxy resin binders or cati- onic acrylate copolymers are especially suitable for the formulation of cathodically depositable, corrosion-resistant primers, or of pastel-colored one coat or top coat paints.

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