Claims
- 1. A refinish primer system comprising a first layer of refinish primer composition and a second layer of primer surfacer composition;
- said refinish primer composition comprising:
- an organic solvent based dispersion having a solids content in the range from about 45 to 70%. by weight, wherein said organic solvent is selected from the group consisting of: aprotic solvents or mixtures thereof;
- and wherein said solids comprise:
- from about 10 to about 50%, by weight, crosslinked acrylic polymer microparticles having a diameter of 0.1 to 10 microns which are insoluble in the organic solvent and are stabilized in the solvent system by steric barriers;
- from about 30 to about 60%, by weight, an oxidatively-curable resin;
- from about 15 to about 40%, by weight, one or more ingredients, selected from the group consisting of: corrosion inhibitors, inert fillers, pigments, surface builders and mixtures thereof;
- and said primer surfacer composition comprising:
- an organic solvent system, and oxidatively curable or plastic resin, and an inert filler.
- 2. A refinish primer composition according to claim 1 further comprising a corrosion inhibitor.
- 3. A refinish primer composition according to claim 1 further comprising inert filler, colored pigment or a mixture thereof.
- 4. A refinish primer composition according to claim 1 wherein the microparticles are associated with dispersion stabilizing polymers which form the surrounding steric barriers, and contain at least two segments, one being soluble in the organic solvent and the other being substantially insoluble therein.
- 5. A refinish primer composition according to claim 4 wherein the dispersion stabilizing polymers are chemically bound to the microparticles.
- 6. A refinish primer composition according to claim 1 wherein the oxidatively-curable resin comprises an alkyd resin, an oil-modified acrylic resin, an epoxy-unsaturated fatty acid ester resin, or an addition or condensation resin with pendant olefinic groups.
- 7. A refinish primer composition according to claim 6 wherein the addition or condensation resin is a polyester, polyurethane, polyamide, polylactone, polycarbonate or polyolefin.
- 8. A refinish primer composition according to claim 2 wherein the corrosion inhibitor is a zinc salt.
- 9. A refinish primer composition according to claim 8 wherein the zinc salt is zinc phosphate.
- 10. A refinish primer composition according to claim 1 wherein the organic solvent system has nonpolar solvating power.
- 11. A refinish primer composition according to claim 10 wherein the solvent system comprises an aromatic hydrocarbon, an aliphatic ketone, an aliphatic ester or a mixture thereof.
- 12. A refinish primer composition according to claim 1 wherein the microparticles are polymers of methyl acrylate or methacrylate, acrylic or methacrylic acid and glycidyl acrylate or methacrylate with surrounding steric barriers of the adduct of self-condensed 12-hydroxystearic acid and glycidyl acrylate or methacrylate, which adduct is copolymerized with methyl acrylate or methacrylate and acrylic or methacrylic acid.
- 13. A refinish primer composition according to claim 1 further comprising silica, bentonite or kaolin clay, zeolites, talcs, inorganic carbonate or silicate or mixtures thereof.
- 14. The refinish primer system of claim 1 wherein the solids content of said organic solvent based dispersion is 50 to 60 percent, by weight.
- 15. The refinish primer system of claim 1 wherein said solids comprise from about 20 to about 40%, by weight, the crosslinked acrylic polymer microparticles.
- 16. The refinish primer system of claim 1 wherein said solids comprise from about 40 to about 50%, by weight, the oxidatively-curable resin.
- 17. The refinish primer system of claim 1 wherein said solids comprise from about 20 to about 35%, by weight, one or more ingredients, selected from the group consisting of: corrosion inhibitors, inert fillers, pigments, surface builders and mixtures thereof.
- 18. The refinish primer system of claim 1 comprising:
- from about 20 to about 40%, by weight, the crosslinked acrylic polymer microparticles;
- from about 40 to about 50%, by weight, the oxidatively-curable resin; and
- from about 20 to about 35%, by weight, one or more ingredients, selected from the group consisting of: corrosion inhibitors, inert fillers, pigments, surface builders and mixtures thereof.
- 19. A refinish primer system comprising a first layer of refinish primer composition and a second layer of primer surfacer composition,
- said refinish primer composition comprising:
- an organic solvent based dispersion having a solids content in the range from about 45 to 70%, by weight, wherein said organic solvent is selected from the group consisting of: aprotic solvents or mixtures thereof;
- and wherein said solids comprise:
- from about 10 to about 50%, by weight, crosslinked acrylic polymer microparticles having a diameter of 0.1 to 10 microns which are insoluble in the organic solvent and are stabilized in the solvent system by steric barriers;
- from about 20 to about 40%, by weight, a resin-pigment dispersion comprising 20 to 35%, by weight, pigment, in an oxidatively-curable resin dissolved in aromatic hydrocarbon;
- from about 15 to about 40%, by weight, an ingredient, or ingredients, selected from the group consisting of: corrosion inhibitors, inert fillers, surface builders and mixtures thereof;
- and said primer surfacer composition comprising:
- an organic solvent system, and oxidatively curable or plastic resin, and an inert filler.
Parent Case Info
This is a continuation of Ser. No. 07/799,928 filed Nov. 26, 1991, now abandoned itself a continuation of Ser. No. 07/474,260 filed Feb. 5, 1990, now abandoned itself a continuation of Ser. No. 07/168,453 filed Mar. 15, 1988, now abandoned.
US Referenced Citations (7)
Continuations (3)
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Number |
Date |
Country |
Parent |
799928 |
Nov 1991 |
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Parent |
474260 |
Feb 1990 |
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Parent |
168453 |
Mar 1988 |
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