It is mainly used in paint,print,coating.ink,road marking paint. Brief introduction and Uses of DIBP DIBP is diisobutyl phthalate , which is a main plasticizer. Just like DBP, it offers good solubility, dispersion and adhesion capacity. It can work with dye for the dying of membrane, manmade leather and plastic product. It also can be used as softener of rubber, or used as the replacer of DBP. ...