Silicate-containing antifreeze with phosphonate silane stabilizer
US4772408A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | May 6, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K5/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A silicone/silicate containing antifreeze characterized by dilute aqueous stability includes phosphonate silanes characterized by the following formula: ##STR1## wherein a is 0 or 1, b is 1 or 2, c is 0 or 1, R.sup.1 and R.sup.3 are selected from the group consisting of hydrogen, monovalent hydrocarbon radicals and substituted monovalent hydrocarbon radicals, R.sup.2 is a divalent hydrocarbon radical selected from the group consisting of alkylene, arylene and alicyclic radicals, Z is a hydrolyzable moeity attached to silicon, and X is a member selected from the group consisting of hydrogen, monovalent hydrocarbon radicals, substituted monovalent hydrocarbon radicals, and a monovalent cation, the phosphonate silane having an appropriate hydrophile/hydrophobe balance and being present in an amount sufficient to stabilize the silicate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.