C9 petroleum resin is widely used into Paint, Ink, Rubber, Adhesive industrial. 1. Product Introduction: ... have high softening point are used for printing inks, they have color spreading, fast dry and brightening effects ... as paper glutting agents, plastic modifiers etc.3.Specification:Color Grade: 9 - 13Softening Point: 80-120 degrees.4 ... sunshine, moisture and pollution. C9 Petroleum Resin for Ink