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:
Nov. 19, 1985
Filed:
Oct. 02, 1978
Andrea Russiello, Kelton, PA (US);
Wilmington Chemical Corporation, Wilmington, DE (US);
Abstract
Stable aqueous dispersions of crosslinked polyurethane particles are disclosed. Preferably the aqueous dispersions coalesce, upon drying, to form continuous films. The aqueous dispersions of crosslinked polyurethane particles are formed by reacting a mixture of polyfunctional hydrogen compounds, one of which has an ionically neutralizable solubilizing group thereon and one of which has a functionality of three or more, with a diisocyanate to form a non-crosslinked or ungelled prepolymer. The solubilizing group is neutralized and the prepolymer is dispersed in water. The prepolymer is chain extended with water or an aqueous solution of a water soluble diamine to form an isocyanate free dispersion of crosslinked polyurethane polymer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile