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:
May. 11, 1982
Filed:
Nov. 03, 1980
Applicant:
Inventor:
Maurice L Zweigle, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ;
U.S. Cl.
CPC ...
536 77 ; 536 86 ;
Abstract
An aqueous dispersion of colloidal size particles of a water-insoluble, polysaccharide derivative such as ethylcellulose is prepared by grinding the water-insoluble, polysaccharide derivative in the presence of water. A suspending agent is optionally employed to increase grinding efficiency and to form a stable suspension of the colloidal size particles.