Method of making coreactable powdered coatings
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsJeffrey M. Lewis, Kenneth L. Hoy, Michael J. Greene
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Abstract
Thermosettable, coreactable particulate powdereded compositions having particles comprising at least a first copolymer of an olefinically unsaturated monomer having at least one functional group and at least a second copolymer of an olefinically unsaturated monomer having at least one functional group which is reactive with the at least one functional group of the at least first copolymer are disclosed. Methods for making and using these compositions are also disclosed.
Claims46
A process of forming a thermosettable, coreactable particulate powdered composition which comprises spray drying an aqueous dispersion containing two or more coreactive copolymers, at least one of the coreactive copolymers having a weight average molecular weight of less than about 50,000 and each coreactive copolymer having at least one functional group and made by polymerizing (i) at least one olefinically unsaturated monomer and (ii) at least one functionality providing monomer which is capable of being polymerized with the at least one olefinically unsaturated monomer, to form particles of the powdered composition, wherein a substantial portion of the particles each contain functional groups which are thermosettably reactive with each other and the particles are substantially uniform and spherical.
A process of forming a thermosettable, coreactive particulate powdered composition which comprises spray drying an aqueous dispersion containing (a) two or more coreactive copolymers, each coreactive copolymer having at least one functional group and made by polymerizing (i) at least one olefinically unsaturated monomer and (ii) at least one functionality providing monomer which is capable of being polymerized with the at least one olefinically unsaturated monomer and (b) crosslinking agent, to form particles of the powered composition, wherein a substantial portion of the particles each contain functional groups and crosslinking agent which are thermosettably reactive with each other and the particles are substantially uniform and spherical.
Dependencies are inferred from the claim text.