Unithane 644 WD 55

UNITHANE® 644 WD 55 is an urethane alkyd based on aliphatic isocyanate and was designed particularly with color retention in mind. The resin can be used in clear and pigmented finishes and is often used in combination with color retentive long oil alkyds. The excellent color and gloss retention of UNITHANE® 644 WD 55, especially when exposed to ultra violet light, makes it an ideal choice for use in exterior applications, including garden furniture and marine finishing. In clear varnishes UNITHANE® 644 WD 55 can be used as the sole medium. For decorative gloss or eggshell finishes, between 20-50% of the urethane resin should be used, the balance being a color retentive long oil alkyd. The resin is supplied in low aromatic white spirit to enable the formulation of coatings that do not require adverse environmental labelling.