Method of producing coatings using thixotropic compositions
阅读：826发布：2023-03-19
专利汇可以提供Method of producing coatings using thixotropic compositions专利检索，专利查询，专利分析的服务。并且A reactive metal oxide or metal hydroxide, such as ZnO, MgO, HgO or Ba(OH)2 and acrylic or methacrylic acid are added to a liquid, hydrophobic, essentially solvent-free coating vehicle capable of being cured by high-energy radiation. The resulting coating composition, as compared to the vehicle alone, can be cured with lower radiation doses, is less susceptible to oxygen inhibition of curing with ionizing radiation and exhibits a thixotropic viscosity which prevents excessive penetration of the coating into porous substrates and contributes non-drip, low-flow characteristics to the composition.，下面是Method of producing coatings using thixotropic compositions专利的具体信息内容。
1. APPLYING TO SAID SUBSTRATE A VISCIOUS THIXOTROPIC COMPOSITION PRODUCED BY INCORPORATING INTO A HYDROPHOBIC, ESSENTIALLY SOLVENT-FREE COATING VEHICLE THAT IS LIQUID AT AMBIENT TEMPERATURE AND CAPABLE OF BEING CURED BY EXPOSURE TO HIGH ENERGY RADIATION AND ADDITIVE SELECTED FROM THE GROUP CONSISTING OF METAL OXIDES AND METAL HYDROXIDES, SAID ADDITIVE BEING DISPERSIBLE IN SAID VEHICLE IN A FINELY DIVIDED STATE AND AN ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID, SAID ADDITIVE BEING REACTIVE WITH SAID ACID TO FORM A METAL SALT THEREOF AND WATER AND BEING SUBSTANTIALLY NON-INHIBITORY OF CURING OF SAID COMPOSITION BY EXPOSURE TO HIGH-ENERGY RADIATION, AND THE AMOUNTS OF SAID ADDITIVE AND ACID BEING SUFFICIENT TO RENDER SAID COMPOSITION THIXOTROPICL AND
1. A PROCESS FOR FORMING A COATING ON A SUBSTRATE COMPRISUING:
2. The process of claim 1 wherein said additive is selected from the group consisting of ZnO, MgO, CaO, SrO, BaO, HgO, PbO, Pb3O4, CuO, CdO, NiO, Sb2O3, Bi2O3, Cr2O3, MnO2, SnO2, ZrO2, Fe2O3, Co2O3, alkali metal oxides and the hydroxides corresponding thereto.
2. exposing said composition to high-energy radiation for a time sufficient to effect curing thereof.
2. EXPOSING SAID COMPOISITION TO HIGH-ENERGY RADIATION FOR A TIME SUFFICIENT TO EFFECT CURING THEREOF,
3. The process of claim 2 wherein at least 1.0 mole of said acid per equivalent of said additive is incorporated into said vehicle.
4. The process of claim 2 wherein said acid is acrylic acid.
5. The process of claim 1 wherein said additive is selected from the group consisting of ZnO, MgO, PbO, CaO, SrO, BaO, HgO, Pb3O4 and the hydroxides corresponding thereto.
6. The process of claim 5 wherein at least 1.0 mole of said acid per eqivalent of said additive is incorporated into said vehicle.
7. The process of claim 5 wherein said acid is acrylic acid.
8. The process of claim 1 wherein said vehicle is essentially free of reactive carboxylic acid groups.
9. The process of claim 8 wherein said additive is selected from the group consisting of ZnO, MgO, CaO, SrO, BaO, HgO, PbO, Pb3O4, CuO, CdO, NiO, Sb2O3, Bi2O3, Cr2O3, MnO2, SnO2, ZrO2, Fe2O3, Co2O3, alkali metal oxides and the hydroxides corresponding thereto.
10. The process of claim 1 wherein said vehicle comprises an acrylate ester resin produced by reacting a half-ester of a 2-hydroxyalkyl acrylate or 2-hydroxyalkyl methacrylate and a dibasic acid with a polyepoxide, said acrylate ester resin being essentially free of reactive carboxylic acid groups.
11. The process of claim 10 wherein said additive is selected from the group consisting of ZnO, MgO, CaO, SrO, BaO, HgO, PbO, Pb3O4, CuO, CdO, NiO, Sb2O3, Bi2O3, Cr2O3, MnO2, SnO2, ZrO2, Fe2O3, Co2O3, alkali metal oxides and the hydroxides corresponding thereto.
12. The process of claim 10 wherein said additive is selected from the group consisting of ZnO, MgO, PbO, CaO, SrO, BaO, HgO, Pb3O4 and the hydroxides corresponding thereto.
13. The process of claim 10 wherein said additive is ZnO.
14. The process of claim 1 wherein said additive is ZnO.
15. The process of claim 14 wherein said acid is acrylic acid.
16. The process of claim 1 wherein the amount of said additive is at least 3 percent by weight of said composition and wherein the amount of said acid is at least the lesser of 0.3 mole per equivalent of said additive and 0.5 by weight of said composition.
17. The process of claim 16 wherein said additive is selected from the group consisting of ZnO, MgO, PbO, CaO, SrO, BaO, HgO, Pb3O4 and the hydroxides corresponding thereto.
18. The process of claim 16 wherein said additive is ZnO.
19. The process of claim 8 wherein said additive is ZnO.
20. The process of claim 19 wherein said acid is acrylic acid.
21. The process of claim 8 wherein the amount of said additive is at least 3 percent by weight of said composition and wherein the amount of said acid is at least the lesser of 0.3 mole per equivalent of said additive and 0.5 percent by weight of said composition.
22. The process of claim 21 wherein said additive is selected from the group consisting of ZnO, MgO, PbO, CaO, SrO, BaO, HgO, Pb3O4and the hydroxides corresponding thereto.
23. The process of claim 21 wherein said additive is ZnO.
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