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:
Jul. 08, 1986
Filed:
Mar. 02, 1983
Applicant:
Inventor:
David G Hey, Northwich, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D / ;
U.S. Cl.
CPC ...
252171 ; 134 26 ; 134 40 ; 252170 ; 252364 ;
Abstract
A cleaning composition suitable for removing ionic flux residues from printed circuit boards comprises an approximate azeotropic mixture of 1,1,2-trichloro-1,2,2-trifluoroethane and an aliphatic alcohol having from 1 to 3 carbon atoms containing as additives and aliphatic alcohol having from 4 to 6 carbon atoms, preferably isobutyl alcohol, and a polyol, preferably ethylene glycol. Contaminated articles are cleaned by bringing them into contact with the cleaning composition which preferably is employed at the boil.