Claims
- 1. An aqueous dispersion of a sizing agent comprising a cellulose-reactive sizing agent and anionic hydrophobically modified cellulose-derivative dispersing agent.
- 2. The dispersion of claim 1, wherein the cellulose-derivative contains a hydrophobic group containing from 4 to about 30 carbon atoms.
- 3. The dispersion of claim 1, wherein the cellulose-derivative contains a hydrophobic amide, hydrophobic ester or hydrophobic ether substituent comprising a saturated or unsaturated hydrocarbon chain of at least 8 carbon atoms, optionally being interrupted by one or more heteroatoms and/or one or more groups containing a heteroatom.
- 4. The dispersion of claim 3, wherein the cellulose-derivative is a fatty amide-modified carboxymethyl cellulose.
- 5. The dispersion of claim 1, wherein the sizing agent is a ketene dimer or an acid anhydride.
- 6. The dispersion of claim 1, wherein the dispersion is anionic.
- 7. A method for preparing the dispersion of claim 1, which comprises homogenizing the cellulose-reactive sizing agent in the presence of an aqueous phase and the anionic hydrophobically modified cellulose-derivative.
- 8. The method of claim 7, which comprises providing a substantially water-free composition containing the cellulose-reactive sizing agent and the anionic hydrophobically modified cellulose-derivative and homogenizing the composition in the presence of the aqueous phase.
- 9. A substantially water-free composition containing a cellulose-reactive sizing agent and an anionic hydrophobically modified cellulose-derivative effective as a dispersing agent.
- 10. The composition of claim 9, wherein the sizing agent is a ketene dimer or an acid anhydride.
Priority Claims (3)
Number |
Date |
Country |
Kind |
97850016 |
Feb 1997 |
EPX |
|
97850017 |
Feb 1997 |
EPX |
|
9704930 |
Dec 1997 |
SEX |
|
Parent Case Info
This application claims the benefit of U.S. Provisional application Ser. No. 60/038,432, filed Feb. 19, 1997.
US Referenced Citations (16)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0 186 956 |
Jul 1986 |
EPX |