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:
Jun. 06, 1989
Filed:
Jun. 19, 1987
James E Eastman, Decatur, IL (US);
A. E. Staley Manufacturing Company, Decatur, IL (US);
Abstract
Cold water soluble etherified or esterified starch derivatives having a 20 rpm Brookfield viscosity of less than 15,000 cps when tested in the form of a 10 weight percent starch solids aqueous solution at 25.degree. C. and which forms a transparent film when dried from aqueous solution can be prepared by first preparing a non-crosslinked granular etherified or esterified starch derivative, washing said starch derivative to remove salt by-products therefrom and thereafter solubilizing said starch derivative and thinning same to the desired viscosity level. The resulting starch derivative products are particularly suitable for use in wall covering adhesive formulations and as protective colloids in emulsion polymerization processes.