mmt with an organic inorganic weight ratio 70 30 is obtained repeat step a and step f of example 4 but mmt of step a and nsp of step f are replaced with synthetic nanoclay snc then the product oda snc with an organic inorganic weight ratio 70 30 is obtained repeat step a and step f of example 4 but mmt of step a and nsp of step f are replaced with synthetic mica then the product oda mica with an organic inorganic weight ratio 70 30 is obtained repeat the procedure in the r o c taiwan patent no 574370 u201c combined antifoulant of derivative disperser from polyetheramine and pibsa u201d so that pib sa pop or pib sa poe can be obtained by grafting hydrophobic polyisobutylene succinic anhydride pib sa with jeffamine u00ae diamine d 230 or pop230 d 400 or pop400 d 2000 or pop2000 d 4000 or pop4000 and ed 2003 or poe2000 the reaction is shown in fig1 the i o dispersants are obtained by respectively mixing these pib sa pop or pib sa poe with clay the modified clay is uniformly dispersed in heptane to have a concentration of 1 u02dc 30 wt then tio 2 10 wt or 50 wt are added for dispersion effects of the dispersants are evaluated by observing or measuring the mobility and the uniformity of the dispersions with a viscometer sem tem afm and an interfacial tension meter are provided results are listed in table 1 as shown in table 1 the products d2000 mmt of examples 1 u02dc 3 can effectively disperse tio 2 10 wt but those of comparative examples 1 u02dc 2 can not.