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:
Aug. 07, 2001
Filed:
Sep. 07, 1999
Applicant:
Inventors:
Christian Piechocki, Marienthal, FR;
James E. Pate, Sanford, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K 3/20 ; C08L 6/302 ;
U.S. Cl.
CPC ...
C08K 3/20 ; C08L 6/302 ;
Abstract
An epoxy resin containing a low temperature nonionic surfactant having a molecular weight of less than 7,000 Daltons, a high temperature nonionic surfactant having a molecular weight of greater than 7,000 Daltons, and an anionic surfactant, can be used to prepare an aqueous dispersion of the epoxy resin that has unusually low particle size and unusually long shelf-stability. The dispersion is preferably prepared by way of a high internal phase ratio emulsion.