Synthetic Resin: Phenolic Resin Natural Resin: Rosin Characteristic: Thermosetting Resin Molecular Principal Chain: Element Organic Polymer Color: Brown, Yellow Main Raw Material: Gum Rosin CAS No: 9003-35-4 Other Names: Offset Ink Resin Type: Modified Phenolic Resin Usage: Offset Printing Ink Phenolic Pentaerythritol Ester Modified Resin This material is used mainly for offset printing for products such as newspapers and magazines. This is a special resin made by modifying a synthetic resin, phenol, with a natural resin, rosin. The performance of the resin is determined mainly by the modifier, rosin. Related key word: Modified Resin Phenolic Resin Offset ink resin