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:
Dec. 17, 1991
Filed:
Jul. 16, 1990
Applicant:
Inventor:
Wayne Harelstad, Bloomington, MN (US);
Assignee:
Fremont Industries, Inc., Shakopee, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ; C11D / ;
U.S. Cl.
CPC ...
252153 ; 134 38 ; 252158 ; 252162 ; 252170 ; 252171 ; 252364 ; 252542 ; 252D / ;
Abstract
A quasi-azeotropic stripper composition for the removal of paint or other organic coatings from metallic surfaces and including a formulation containing 1-10% by weight of an alcoholate activator consisting of sodium methoxide, 10-14 20% by weight of a coupling agent and co-solvent consisting of methanol, and 70-89% by weight of an aprotic polar solvent consisting essentially of N-methyl-2-pyrrolidone. The formulation is desirable for use in the work place since it is non-halogenated, is relatively non-volatile under normal ambient conditions, and also possesses a reasonably useful and high flash point.