Eastman Chemical Company

Philip Jerome Geiger

Stacey James Marsh

John Evan Boisseau

This invention relates to aliphatic polyester resins for use in coatings. More particularly this invention relates to aliphatic polyester resins containing 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCD) that exhibit improved scratch resistance when formulated into 1 K automotive clearcoats. These polyesters can be used as the sole resin in the clearcoat binder or in combination with carbamate-functional acrylic resins and/or hydroxyl-functional acrylic and polyester resins.

Coatings with improved scratch resistance

This invention relates to a carbamate functional thermosetting coating with a composition comprised of a carbamate-functional acrylic and/or polyester polyol and an alkylated melamine-formaldehyde cross linker modified by an aliphatic polyester and an alkylated melamine. The polyester polyol is made of monomers including a 2,4,4-tetraalkylcyclobutane-1,3-diol and an aliphatic diacid. These polyester polyols can be used in blends with hydroxyl-functional or carbamate-functional acrylic resins or serve as the primary film former in a coating formulation.

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Kingsport, TN, United States of America

Philip Jerome Geiger