| abstract |
The invention relates to a dispersant, which has a tertiary or quaternary amine anchoring group, and a dissolving polymer, the dissolving polymer is selected from C 8-50 fatty acids; C 8-50 alk (en) yl substituted succinic acid and anhydride Or a partial ester; a dimer or trimer fatty acid; and / or a polymer derived from a repeating unit of polyester, polyether, polyacrylate, polyamine, polyurethane; or the repeating unit The mixture becomes a random or block copolymer. The dispersant does not have a removable hydrogen atom on the counter carbon atom of the nitrogen of the tertiary or quaternary amine due to the alkylene linker between the tertiary or quaternary amine and the dissolved polymer. , And improve the advanced skills. The dispersant may be a dispersant with improved thermal stability and low yellow content after aging at high temperature. |