Glycol antifreeze mixtures
US4077895A · kind A · utility
7Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1977 |
| Grant date | Mar 7, 1978 |
| Priority date | — |
| Expiry date | Jan 3, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D19/0404
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A glycol-based antifreeze formulation containing as a defoaming agent, from 0.001% to about 1.0% by weight of the reaction product of a polyglycerol having from 5 to 30 glycerol units, and a glycidyl ether having the formula ##STR1## wherein n is an integer from 1 to 20, R is hydrogen, methyl or ethyl, and Z is an alkyl group having from 1 to 8 carbon atoms or the group having the formula ##STR2##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.