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. 15, 1983
Filed:
Mar. 26, 1982
Applicant:
Inventor:
John M Kernstock, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
524 43 ; 524 44 ; 106 1434 ; 106170 ; 1061 / ;
Abstract
Aqueous coating compositions are disclosed employing as a thickener an HEHPC ether having a haze point of at least about 70.degree. C., a gel point below 100.degree. C., a total molar substitution of about 2.5 to about 4.0 and having a ratio of hydroxypropyl molar substitution to hydroxyethyl molar substitution of about 1:2 to 2:1. The HEHPC thickeners as described exhibit good resistance to bacterial degradation, good color development and a haze point sufficiently high to allow normal formulation of the coating composition.