charged the preparing process is the same as in example 1 the coated panels were allowed to dry at room temperature for a set period prior to coating with top coat cross hatch tape test was conducted when top coat was completely dried salt spray test and chemical resistance test were also conducted to evaluate the anti corrosion performance 15 g primer 77 solid and 6 67 g phenalkamine curing agent were charged the preparing process is the same as in example 1 the coated panels were allowed to dry at room temperature for a set period prior to coating with top coat cross hatch tape test was conducted when top coat was completely dried salt spray test and chemical resistance test were also conducted to evaluate the anti corrosion performance 15 g primer 77 solid and 0 75 g poly vinyl chloride average mn 30000 and 6 67 g phenalkamine curing agent mixed and stirred for 30 minutes however vinyl chloride was difficult to be completely dissolved with xylene even after adding some methyl ethyl ketone into the primer system so it has solubility issue for directly mixing poly vinyl chloride powder mixed into epoxy system table 4 summarizes the properties of various coatings used in this research with the blending of vinyl chloride vinyl acetate vinyl alcohol copolymer convinyl u00ae g 75 or vinyl chloride vinyl acetate maleic acid terpolymer convinyl u00ae c 47 all the coatings have improved overcoatability windows and slightly improved anti corrosion properties and chemical resistance ability glass transition temperature tg of vinyl chloride polymer modified primers decreased a little comparing to that of comparative example 1 the impact resistance pendulum hardness and contact angles of the coatings cured for 30 days at room temperature were tested these.