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. 13, 1991
Filed:
Nov. 13, 1989
Wilfred C Meyer, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
A cellulose ether blend useful as an adhesive in finishing compounds, comprising a high viscosity hydroxypropyl methylcellulose having a viscosity from about 4,000 to about 120,000 cps and a low viscosity hydroxypropyl methylcellulose having a viscosity from about 5 to about 3,000 cps, wherein the hydroxypropyl methylcellulose blend is at least from about 10:1 to about 1:2 high viscosity hydroxypropyl methylcellulose to low viscosity hydroxypropyl methylcellulose. Both the high and low viscosity cellulose ethers have a methoxyl substitution of about 25 to about 32 weight percent and a hydroxypropyl substitution of about 3 to about about 13 weight percent. The cellulosic blend can be used in tape joint compounds, tile adhesives, grouts, spray textures and stucco compositions.