# US 5,344,883 A · Polymeric powder coating compositions comprising low molecular weight copolymer or terpolymer salts of .alpha.-olefins and .alpha.,.beta.-ethylenically unsaturated carboxylic acids > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,344,883 A - Document ID: US5344883A - Status: Granted - Kind: A - Application number: 07/956,711 - Filed: 1992-10-05 - Granted: 1994-09-06 - Earliest claimed: 1992-10-05 - Assignees: AlliedSignal Inc. - Inventors: Donald F. Loar; Patrick A. Verle - Web page: https://patentgrep.com/patent/US5344883A ## CPC - C09D 167/06: Unsaturated polyesters having carbon-to-carbon unsaturation - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) ## Abstract A polymeric powder coating composition which comprises: (a) polymeric powder coating resin and (b) at least one low molecular weight copolymer salt having a degree of saponification neutralization upto 100%. The powder coating composition may be applied to articles using conventional techniques. Processes for producing the polymeric powder coating compostiions, and articles comprising the same are also disclosed. ## Claims ### Claim 1 A polymeric powder coating composition which comprises: (a) a cross-linkable unsaturated polyester resin and (b) a salt of copolymer or terpolymer derived from an .alpha.-olefin and an .alpha.,.beta.-ethylenically unsaturated carboxylic acid. ### Claim 2 (depends on 1) A polymeric powder coating composition according to claim 1 wherein the amount of .alpha.-olefin derived units is from about 50% by wgt. to about 97.5% by wgt. and the amount of .alpha.,.beta.-ethylenically unsaturated carboxylic acid derived units is from about 2.5% by wgt. to about 50% by wgt., based on the total weight of recurring monomeric units derived from said acid and said olefin. ### Claim 3 (depends on 2) A polymeric powder coating composition according to claim 2 wherein the amount of said .alpha.-olefin derived units is from about 60 to about 95% by wgt. and the amount of said acid derived units is from about 5 to about 40% by wgt. ### Claim 4 (depends on 3) A polymeric powder coating composition according to claim 3 wherein the amount of said .alpha.-olefin derived units is from about 85 to about 95% by wgt. and the amount of said acid derived units is from about 15 to about 5% by wgt. ### Claim 5 (depends on 1) A polymeric powder coating composition according to claim 1 wherein cations of said salt are selected from the group consisting of copper, iron, sodium, potassium, magnesium, calcium, barium, zinc and aluminum. ### Claim 6 (depends on 5) A polymeric coating composition according to claim 5 wherein said cations are selected from the goup consisting of calcium, zinc and magnesium. ### Claim 7 (depends on 1) A polymeric powder coating composition according to claim 1 wherein the salt has a degree of neutralization of upto 100%. ### Claim 8 (depends on 7) A polymeric powder coating composition according to claim 7 wherein the degree of neutralization is at least 15%. ### Claim 9 (depends on 8) A polymeric powder coating composition according to claim 8 wherein the degree of neutralization is from about 15 to about 80% ### Claim 10 (depends on 9) A polymeric powder coating compostion according to claim 9 wherein the degree of neutralization is from about 25 to about 60%. ### Claim 11 (depends on 1) A polymeric powdered coating composition according to claim 1 wherein said .alpha.-olefin is selected from the group consisting of ethylene and propylene. ### Claim 12 (depends on 1) A polymeric powder coating composition according to claim 1 wherein said acid is selected from the group consisting of acrylic acid, ethacrylic acid and methacrylic acid. ### Claim 13 (depends on 11) A polymeric powder composition according to claim 11 wherein said .alpha.-olefin is ethylene. ### Claim 14 (depends on 12) A polymeric powder coating composition according to claim 12 wherein said acid is acrylic acid. ### Claim 15 (depends on 1) A polymeric powder coating composition according to claim 1 wherein said copolymer or terpolymer has a number average molecular weight equal to or less than about 20,000. ### Claim 16 (depends on 15) A polymeric powder coating composition according to claim 15 wherein said molecular weight is from about 1,000 to about 6,000. ### Claim 17 (depends on 16) A polymeric powder coating composition according to claim 16 wherein the at least one copolymer salt is a copolymer of from about 60 to about 95% ethylene and from about 40 to about 95% acrylic acid wherein from about 20 to 60% of the acid functions are neutralized with a cation selected from the group consisting of copper, iron, sodium, potassium, magnesium, calcium, barium, zinc and aluminum, said salt having a number average molecular weight from about 500 to about 6000. ### Claim 18 (depends on 17) A polymeric powder coating composition according to claim 17 wherein the cation of said copolymer salt is calcium, zinc, aluminum or a combination thereof. ### Claim 19 (depends on 1) A polymeric powder coating composition according to claim 1 wherein the cations of said salt are selected from the group consisting of metal cations from Groups IIA and IIB of the Periodic Table of Elements. ### Claim 20 (depends on 1) A polymeric powder coating composition according to claim 1 wherein: said resin is in an amount of from about 99.5% to 80% by total weight of said salt and resin; said salt is in an amount of from about 0.5% to about 20% by total weight of said salt and said resin; said salt is a copolymer having a number average molecular weight of from about 500 to about 6000 and comprises from about 40 to about 95% ethylene and from about 40 to about 95% of an .alpha.,.beta.-unsaturated acid selected from the group consisting of acrylic acid, ethacrylic acid and methacrylic acid, wherein at least about 15% of the acid functions are neutralized with a cation selected from the group consisting of metal cations from Group IIA and IIB of the Periodic Table of Elements. ### Claim 21 (depends on 20) A polymeric powder coating resin according to claim 20 wherein: said acid is acrylic acid; said cation is calcium, zinc or magnesium; and said resin is an unsaturated polyester resin.