Polyester-siloxane paint

Abstract

Abstract A RADIATION-CURABLE PAINT IS PROVIDED BY MIXING AN ALIPHA-BETA OLEFINICALLY UNSATURATED SILOXANE. THE RESIN ALPHA-BETA OLEFINICALLY UNSATURATED SILOXANE. THE RESIN MAY BE ANY ALPHA-BETA OLEFINICALLY UNSATURATED POLYESTER HAVING BETWEEN ABOUT 0.5 AND ABOUT 5 UNITS OF ALPHA-BETA OLEFINIC UNSATURATION PER 1,000 UNITS MOLECULAR WEIGHT. BOTH MALEIC TYPE AND ACRYLIC TYPE UNSATURATION ARE ILLUSTRATE. IN ONE EMBODIMENT, THE POLYESTER IS THE COMMON, CONVENTIONAL POLYESTER FORMED FROM MELEIC ANHYDRIDE, A GLYCOL, AND RING TYPE ANHYDRIDE, E.G., PHTHALIC ANHYDEIDE, A GLYCOL, AND AN AROMATIC OR SATURATED ANHYDEIDE, E.G., PHTHALIC ANHYDRIDE, TETRAHYDROPHTHALIANHYDDRIDE, ETC. IN ANOTHER EMBODIMENT, A SATURATED POLYESTER IS REACTED WITH A DIISOCYANATE AND THE PRODUCT REACTED WITH A HYDROXYALKYL ACRYLATE. IN ANOTHER EMBODIMENT, THE POLYESTER IS A SILOXANE-MODIFIED POLYESTER. THE UNSATURATED SILOXANE COMPONENT IS THE REACTION PRODUCT OF AT LEAST TWO MOLAR PARTS OF A MONOMERIC, MONOHYDROXY ESTER OF AN ALPHA-BETA OLEFINICALLY UNSATURATED MONOCARBOXYLIC ACID, E.G., ACRYLATES, METHACRYLATES, CROTONATES, CINNAMATES, WITH ONE MOLAR PART OF A SILOXANE HAVING AT LEAST TWO SILICON ATOMS WITH ONE VALENCE SATIFIED BY A HYDROXYL GROUP OR AN ALKOXY GROUP; THE REACTION IS A CONVENTIONAL CONDENSATION REACTION. VINYL MONOMERS MAY ALSO BE INCLUDED IN THE PAINT DISPERSION.

Inventors

• 👤 J Nordstrom

Bibliographic Details