???CB-820S is a modified copolymer with polyester polyol as the main monomer.(Polyester-Type Adhesion Promoter) It is an Adhesion Promoter made by adjusting the molecular weight and modifying it with other resins. Because of its soft molecular chain, it has polarity attached to it. Adsorbs functional groups to promote better adhesion on polar materials such as PET/PVC/nylon and aluminum foil.
? ? CB-820S has very good solubility. Most commonly used organic solvents can dissolve it into a colorless and transparent liquid. It can also be dissolved without benzene or ketone. For example, it can be dissolved with ester solvent alone. For example, 820S resin: ethyl ester: n-propylene Ester = 2:4:4, it has good compatibility with Polyurethane Resin, chlorine-vinyl resin, polyketone resin, rosin resin, etc. When used in polyurethane matte oil, the generally recommended addition amount is 0.2%-0.3%; when used in polyurethane screen printing ink, the general recommended addition amount is 2%--5%.
