| US4289811A | 1981-09-15 | |||
| US5627232A | 1997-05-06 | |||
| US5629373A | 1997-05-13 | |||
| US5914373A | 1999-06-22 | |||
| US6103816A | 2000-08-15 |
| 1. | latex coating based on small particle size acrylics with improved viscosity retention, comprising : a) at least one pigment and water, b) at least one dispersant, c) at least one defoamer, d) at least one aminoplast ether copolymer sufficient to thicken the latex coating without the need for additional nonaminoplast ether copolymer thickeners. |
| 2. | The latex coating of claim 1, wherein the aminoplast ether copolymer has a relatively high hydrophobe content. |
| 3. | The latex coating of claim 2, wherein the hydrophobe content is about 3 to about 10% weight content. |
| 4. | The latex coating of claim 2, wherein the hydrophobe is tristyryl phenol. |
| 5. | The latex coating of claim 2, wherein the amount of aminoplast ether copolymer is fmm about 0.1 weight percent to about 15 weight percent. |
| 6. | The latex coating of claim 2, wherein the aminoplast ether copolymer has a molecular weight of about 12,000 to about 800,000. |
| 7. | The latex coating of claim 5, wherein the hydrophobe is tristyryl phenol. |
| 8. | A method for malang a latex coating with improved viscosity retention having the following steps : a) admixing water, a dispersant, a defoamer, propylene glycol, and Kathon LX ; b) admixing in additional desired additives and pigments ; c) adding this premix to a container, and d) optionally adding a dcfoamer to remove entrained air. |
| 9. | The method for making a latex coating of claim 8, wherein the premix comprises water and aminoplast ether copolymer. |
11. The method for making a latex coating of claim 9, wherein the hydrophobe is tristyryl phenol.
12. The method of making a latex coating of claim 9, wherein the hydrophobe content is greater than about 3% by weight.
13. The method for making a latex coating of claim 8, wherein the dispersant comprises Tamol 731.
14. The method for making a latex coating of claim 8, wherein the defoamer comprises foamaster VL.
15. The method for making a latex coating of claim 8, wherein the pigments comprise TiO2.
16. The method of making a latex coating of claim 9, wherein the aminoplast ether copolymer contains a relatively high hydrophobe content.
17. The method of making a latex coating of claim 16, wherein the hydrophobe is aliphatic, alkyl phenol, tristyryl phenol, or combinations thereof, 18. A method for making a small particle size acrylic latex coating with an improved viscosity retention having the following steps: a) admixing water, a dispersant, a defoamer, propylene glycol, and Kathon LX ; b) admixing in additional desired additives and pigments ; c) adding this premix to a container ; and d) optionally adding a defoamer to remove entrained air.
19. The method for making a small particle size acrylic latex coating of claim 18, wherein the premix comprises water, Optiflo L100, and Optiflo H600.
20. The method for making a small particle size acrylic latex coating of claim 18, wherein the pigments comprise TiO2.
21. The method for making a small particle size acrylic latex coating of claim 19, wherein the pigments comprise TiO2.
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