Aqueous pigmented coating composition with improved open time comprising crosslinkable oligomer(s) and dispersed polymer(s)
US7569636B2 · kind B2 · utility
11Cited by
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25Claims
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Key dates
| Filing date | Mar 22, 2004 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Dec 14, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aqueous coating composition with an improved open time comprising (a) a crosslinkable water-dispersible oligomer(s); (b) a dispersed polymer(s), (c) a pigment(s) with an oil absorption number ≦25 g oil/100 g pigment and optionally (d) a Newtonian-like thickener(s) and (e) a thixotropic thickener(s) wherein the weight ratio of (a):(b) is in the range of from 10:90 to 60:40; wherein (d)+(e)=0.1 to 10 wt % and wherein said composition when drying to form a coating has a tack-free time of ≦24 hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.