Exxon Research and Engineering Company

Constantine J Bouboulis

Irving Kuntz

According to one aspect of the present invention, an improved method for preparing acrylic copolymer resins is provided in which the polymerization solvent comprises an alkanoic acid alkyl ester having a total of from about 7 to 18 carbon atoms per molecule. The monomers comprise hydroxy-substituted alkyl (meth)acrylates, and non-hydroxy substituted alkyl (meth)acrylates, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in high solids acrylic coatings suitable for electrostatic spraying. The polymerization solvent can remain in the resin to become the solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides surprisingly improved electrical resistivity and solvency and decreased surface tensions over prior art polymerization solvents. In accordance with another aspect of the present invention, an improved method for preparing high solids acrylic resin coatings is provided wherein an acrylic copolymer resin is dissolved in a coating solvent comprising at least one alkyl alkanoic acid ester having a total of from 7 to 18 carbon atoms per molecule.

Process for preparing superior high solids coatings

According to the present invention, an improved method for providing acrylic copolymer resins is provided in which the polymerization solvent comprises a blend of methyl isobutyl ketone and certain alkyl-substituted benzene solvents. The monomers comprise hydroxy-substituted alkyl (meth)acrylate monomers and non-hydroxy substituted alkyl (meth)acrylate monomers, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in acrylic coatings. The polymerization solvent can remain in the resin to become a solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides improved electrical resistivity, improved solvency and decreased surface tensions over prior art polymerization solvents.

Superior solvent blends for synthesis of acrylic resins for high solids

According to one aspect of the present invention, an improved method for preparing acrylic copolymer resins is provided in which the polymerization solvent comprises an alkanoic acid alkyl ester having a total of from about 7 to 12 carbon atoms per molecule. The monomers comprise hydroxy-substituted alkyl (meth)acrylates, and non-hydroxy substituted alkyl (meth)acrylates, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in high solids acrylic coatings suitable for electrostatic spraying. The polymerization solvent can remain in the resin to become the solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides surprisingly improved electrical resistivity and solvency and decreased surface tensions over prior art polymerization solvents. In accordance with another aspect of the present invention, an improved method for preparing high solids acrylic resin coatings is provided wherein an acrylic copolymer resin is dissolved in a coating solvent comprising at least one alkyl alkanoic acid ester having a total of from 7 to 12 carbon atoms per molecule.

Superior high solids coatings

Novel polyamides are prepared by reacting a dicarboxylic acid with 1,4-cyclohexane-bis(.beta.-ethylamine). Unique properties are obtained where the dicarboxylic acid is 1,4-cyclohexane diacetic acid. The polymers of this invention are distinguished from the prior art in that they exhibit unexpectedly high melting points and crystallinity. Thence they are suitable for use in fibers as well as molding and other general polyamide applications.

Growing community of inventors

Union, NJ, United States of America

Constantine J Bouboulis