Aqueous pigmented coating formulation providing for improved opacity
US7300509B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Mar 15, 2005 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Jun 20, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H19/46
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Aqueous pigmented coating formulations for improving opacity and processes for their manufacture are disclosed. Specifically, the aqueous pigmented coating formulations comprise an acylated lecithin that comprises a chemically modified lecithin and less than 10% (by total weight acylated lecithin) free fatty acid. Additionally, the acylated lecithin is substantially free of fatty acid esters and surfactants. The acylated lecithin provides an increase in opacity to paper and paperboard coated with the aqueous pigmented coating formulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.