Granolite 5130 Phenolic modified resin DRT Phenol Formaldehyde (PF) >> Modified Phenolic Resins Inks Printing Inks & Varnishes >> Gravure >> Publication PUBLICATION ROTOGRAVURE IKS Granolite 5130 Phenolic modified resin. Excellent drying properties. Allows a high dilution rate. Recommended as extender and for let down varnishes. Phenolic modified resin. Offers very good drying properties. Allows a high dilution rate. Recommended as extender and for let down varnishes.