RK 8-4 Adduct of a diglycidyl ether of bisphenol A and a rubber 68610-41-3 CVC Epoxide (EP) >> Bisphenol A based ADHESIVE EXPERIMENTAL RESIN RK-8-4 High Molecular Weight DGEBA Modified with a Liquid Rubber RK-8-4 is an adduct of a solid diglycidyl ether of Bisphe-nol A and a liquid rubber. The product is a solid resin, which imparts toughness and a degree of flexibility to ep-oxy formulations. The formulator can expect improve-ments in impact resistance, peel and tensile shear strengths and low temperature properties with the incor-poration of RK-8-4. Adhesives Powder Coatings Laminating Reinforcements Solvent Based Coatings High molecular weight diglycidyl ether of bisphenol A modified with a liquid rubber. Used in adhesives. Provides toughness and degree of flexibility to epoxy formulations. Improves impact resistance, peel and tensile shear strengths and low temperature properties.