It is an IBMA polymer. It is an alkyd-compatible acrylic resin designed to havegood compatibility with long-oil alkyds. The addition of PARALOID™️ B-67MT(45%) to alkyds, oils, or varnishes produces coatings of improved hardness,faster-drying speed, better color and gloss retention, and improved hold outand brushing characteristics. It is supplied as a 45% solids solution inmineral spirits for use where requirements for slightly slower drying speedand/or higher flash point exist.