Aqueous dispersions of carboxylated cellulose esters, and methods of making them
US7052540B2 · kind B2 · utility
8Cited by
18References
69Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 11, 2004 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Aug 30, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2301/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Aqueous dispersions of carboxylated cellulose esters are disclosed having a low organic solvent content. These dispersions can be prepared using a volatile hydrophilic organic solvent and a coupling organic solvent having a lower volatility, the volatile hydrophilic solvent being substantially stripped off during preparation to obtain a dispersion useful in a variety of coating compositions, providing satisfactory performance in metallic flake control, flow and leveling properties, and defect reduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.