... C5 and C9 res General description:C5/C9 copolymer resins is a new line of our products. ... both C5 and C9 resins. Application: C5/C9 copolymer resins are widely used in hot-melt adhesives, ... well accepted by customers.In the rubber industry, copolymer resin can not only improve the adhesion between ... -melt adhesive, adhesive, glue industry, C5/C9 copolymer resins not only provides good initial tack, but ...