Patent US898114A successfully refreshed from Google Patents.
Patent US4530946A successfully refreshed from Google Patents.
US4530946A
Expired / Lapsed
US
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Resinous emulsion comprising microparticles for coating use and preparation thereof
Assignee: Nippon Paint Co Ltd
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Filing: 1984-03-02
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Granted: 1985-07-23
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Expires: 2004-03-02
Abstract
Abstract A resinous emulsion is prepared by copolymerizing alpha , beta -ethylenically unsaturated monomers and a crosslinking monomer which is at least difunctional, in an aqueous medium in the presence of a resin having an amphoionic group of the formula: <IMAGE> wherein R represents substituted or unsubstituted C1-C6 alkylene or phenylene and Y is -COOH or -SO3H, or in the presence of a resin having the above said amphoionic group and a polymerizable alpha , beta -unsaturated bonding. The thus obtained emulsion is useful for the obtainment of crosslinked polymer microparticles to be incorporated in a high solid coating composition or for the preparation of aqueous coating composition because of having contained no harmful emulsifier or surfactant.
Inventors
- 👤 Kazunori Kanda
- 👤 Keizou Ishii
- 👤 Katsuaki Kida
- 👤 Shinichi Ishikura
- 👤 Ryuzo Mizuguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:37
CPC Classifications
C; C09; C09D; C09D167/00; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34; C08G59/00; C08G59/14; C08G59/18; C08G59/40; C08G59/4007; C08G59/4064; C09D201/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
In a resinous emulsion comprising a dispersion medium of water and a dispersed phase of polymer microparticles having an average diameter of 0.02 to 0.5μ which are insoluble in water and are maintained in a stabilized state of dispersion therein, the improvement wherein the microparticles are composed of a crosslinked copolymer comprising α,β-ethylenically unsaturated monomers and a crosslinking monomer which is at least difunctional, said copolymer having physically adhered or covalently bonded thereto a resinous portion having an amphoionic group of the formula: ##STR27## wherein R is a member selected from substituted or unsubstituted alkylene having 1 to 6 carbon atoms and phenylene and Y is --COOH or --SO 3 H, said resinous portion being selected from the group consisting of modified epoxy, acrylic, polyester and melamine resins.
Claim 2
Dependent Claim
128 words
In a resinous emulsion comprising a dispersion medium of water and a dispersed phase of polymer microparticles having an average diameter of 0.02 to 0.5μ which are insoluble in water and are maintained in a stabilized state of dispersion therein, the improvement wherein the microparticles are composed of a crosslinked copolymer comprising α,β-ethylenically unsaturated monomers and a crosslinking monomer which is at least difunctional, said copolymer having physically adhered or covalently bonded thereto a resinous portion having an amphoionic group of the formula: ##STR27## wherein R is a member selected from substituted or unsubstituted alkylene having 1 to 6 carbon atoms and phenylene and Y is --COOH or --SO 3 H, said resinous portion being selected from the group consisting of modified epoxy, acrylic, polyester and melamine resins.
Claim 3
Independent Claim
178 words
A method for preparing a resinous emulsion comprising a dispersion medium of water and a dispersed phase of polymer microparticles having an average diameter of 0.02 to 0.5μ which are insoluble in water and are maintained in a stabilized state of dispersion therein, microparticles being composed of a crosslinked copolymer comprising α,β-ethylenically unsaturated monomers and a crosslinking monomer which is at least difunctional, and having physically adhered thereto a resinous portion having an amphoionic group of the formula: ##STR28## wherein R is a member selected from substituted or unsubstituted alkylene having 1 to 6 carbon atoms and phenylene and Y is --COOH or --SO 3 H, said resinous portion being selected from the group consisting of modified epoxy, acrylic, polyester and melamine resins, which is characterized by that the α,β-ethylenically unsaturated monomers and the crosslinking monomer are copolymerized in an aqueous medium, by emulsion polymerization technique, in the presence of a resin having an amphoionic group of the formula: ##STR29## (in which R and Y are as defined above) selected from modified epoxy, acrylic, polyester or melamine resin.
Claim 4
Independent Claim
178 words
A method for preparing a resinous emulsion comprising a dispersion medium of water and a dispersed phase of polymer microparticles having an average diameter of 0.02 to 0.5μ which are insoluble in water and are maintained in a stabilized state of dispersion therein, microparticles being composed of a crosslinked copolymer comprising α,β-ethylenically unsaturated monomers and a crosslinking monomer which is at least difunctional, and having physically adhered thereto a resinous portion having an amphoionic group of the formula: ##STR28## wherein R is a member selected from substituted or unsubstituted alkylene having 1 to 6 carbon atoms and phenylene and Y is --COOH or --SO 3 H, said resinous portion being selected from the group consisting of modified epoxy, acrylic, polyester and melamine resins, which is characterized by that the α,β-ethylenically unsaturated monomers and the crosslinking monomer are copolymerized in an aqueous medium, by emulsion polymerization technique, in the presence of a resin having an amphoionic group of the formula: ##STR29## (in which R and Y are as defined above) selected from modified epoxy, acrylic, polyester or melamine resin.
Claim 5
Independent Claim
183 words
A method for preparing a resinous emulsion comprising a dispersion medium of water and a dispersed phase of polymer microparticles having an average diameter of 0.02 to 0.5μ which are insoluble in water and are maintained in a stabilized state of dispersion therein, microparticles being composed of a crosslinked copolymer comprising α,β-ethylenically unsaturated monomers and a crosslinking monomer which is at least difunctional, and having covalently bonded thereto a resinous portion having an amphoionic group of the formula: ##STR30## wherein R is a member selected from substituted or unsubstituted alkylene having 1 to 6 carbon atoms and phenylene and Y is --COOH or --SO 3 H, said resinous portion being selected from the group consisting of modified epoxy, acrylic, polyester and melamine resins, which is characterized by that the α,β-ethylenically unsaturated monomers and the crosslinking monomer are copolymerized in an aqueous medium, by emulsion polymerization technique, in the presence of a resin having an amphoionic group of the formula: ##STR31## (in which R and Y are as defined above) and a polymerizable α,β-unsaturation bonding, selected from modified epoxy, acrylic, polyester or melamine resin.
Claim 6
Independent Claim
183 words
A method for preparing a resinous emulsion comprising a dispersion medium of water and a dispersed phase of polymer microparticles having an average diameter of 0.02 to 0.5μ which are insoluble in water and are maintained in a stabilized state of dispersion therein, microparticles being composed of a crosslinked copolymer comprising α,β-ethylenically unsaturated monomers and a crosslinking monomer which is at least difunctional, and having covalently bonded thereto a resinous portion having an amphoionic group of the formula: ##STR30## wherein R is a member selected from substituted or unsubstituted alkylene having 1 to 6 carbon atoms and phenylene and Y is --COOH or --SO 3 H, said resinous portion being selected from the group consisting of modified epoxy, acrylic, polyester and melamine resins, which is characterized by that the α,β-ethylenically unsaturated monomers and the crosslinking monomer are copolymerized in an aqueous medium, by emulsion polymerization technique, in the presence of a resin having an amphoionic group of the formula: ##STR31## (in which R and Y are as defined above) and a polymerizable α,β-unsaturation bonding, selected from modified epoxy, acrylic, polyester or melamine resin.
References Cited (Backward Citations)
US4427820A
Cited
US4368287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |