Polyoxyalkylene triol additives for minimizing deposits from aqueous heat-exchanging fluids
US4260504A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Mar 22, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F19/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.