Joncryl 678 Acrylic resin Johnson Polymer North America South and Central America Acrylic Resins Coatings >> Waterborne General Industrial /Maintenance Wood & Furniture Coatings Joncryl 678 is alkali-soluble, mid-range molecular weight resin. Recommended as a pigment dispersant in waterborne coatings. It is also used in wood industrial coatings. Alkali-soluble, mid-range molecular weight acrylic resin. Used in wood industrial coatings. Offers good chemical resistance and hardness.