The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 08, 2005
Filed:
Apr. 13, 2000
John Capendale, Bp Broek Op Langedijk, NL;
Henk Felix, Da Beverwijk, NL;
Karlheniz Hausmann, Auvenier, CH;
Eleni Karayianni, Geneva, CH;
Metske Steffen Osinga, Sj Haarlem, NL;
Bernard Rioux, Puteaux, FR;
John Capendale, Bp Broek Op Langedijk, NL;
Henk Felix, Da Beverwijk, NL;
Karlheniz Hausmann, Auvenier, CH;
Eleni Karayianni, Geneva, CH;
Metske Steffen Osinga, Sj Haarlem, NL;
Bernard Rioux, Puteaux, FR;
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Paramelt B.V., Heerhugowaard, NL;
Abstract
This invention is directed to the discovery that ethylene-acid copolymers that have low melt flow index MFI (namely less than 100 g/10 min measured according to ASTM D1238 at 190° C., 2.16 kg) even with low acid content (such as less than 20 wt. %) can provide stable aqueous dispersions directly in aqueous media (i.e. free from any other solvent) with less than 1 wt. % non-dispersibles in single bases even at mild dispersion process conditions, at temperature less than 100°C., atmospheric pressure, and with low agitation speed.