Reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrates and antifreeze/heat transfer fluids
US8431038B2 · kind B2 · utility
1Cited by
39References
2Claims
0Family size
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Key dates
| Filing date | Feb 14, 2012 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Feb 14, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K5/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrate is provided comprised of ethylene glycol, a polyhydric alcohol having a boiling point above about 150° C. and that acts as an alcohol dehydrogenase inhibitor, such as propylene glycol or glycerol, and selected additives. The antifreeze/heat transfer fluid concentrate may be combined with water to form a coolant solution for use in internal combustion engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.