Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1987-01-16
1988-04-19
Ivy, C. Warren
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524853, 524902, 526216, C08K 510, C08L 3314
Patent
active
047390069
ABSTRACT:
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.
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Exxon Research & Engineering Co.
Furman D. E.
Ivy C. Warren
Murray, Jr. J. B.
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