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:
Apr. 07, 1981
Filed:
Mar. 22, 1979
Marcel J Tucoulat, Martiques, FR;
Jacques Lonchampt, Montbeliard, FR;
Naphtachimie, Paris, FR;
Abstract
PCT No. PCT/FR78/00008 Sec. 371 Date Mar. 22, 1979 Sec. 102(e) Date Mar. 22, 1979 PCT Filed July 10, 1978 The invention concerns a process for preventing the formation of deposits on the walls of the heating or cooling circuits of heat exchangers in which an aqueous heat-exchange liquid circulates. This process comprises mixing with the heat-exchange liquids from about 0.3 to about 5% by weight of a product of polyaddition of ethylene oxide and propylene oxide on a monohydric alcohol, water, a diol or a triol, the ethylene oxide representing from 60% to 90% by weight of the fixed alkylene oxides. This process can be used in particular in internal combustion engine cooling circuits.