Coatings prepared from trialkoxysilanes
US4113665A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1977 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Feb 3, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D183/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Chemically resistant coatings comprise a binder, the major portion of which is prepared by reacting, in the presence of an acidic solution, trialkoxysilanes with aliphatic polyols and/or silicone intermediates. The silanes have the formula ##STR1## where R.sub.1 is selected from the group consisting of alkyl, aryl and cycloalkyl groups containing up to about 6 carbon atoms and each R.sub.2 is independently selected from the group consisting of alkyl, hydroxyalkyl, alkoxyalkyl and hydroxyalkoxyalkyl groups containing up to about 6 carbon atoms. The aliphatic polyols contain an average of at least two carbon bonded hydroxyl groups per polyol. The silicone intermediates have the formula ##STR2## WHERE EACH R.sub.3 is selected from the group consisting of the hydroxy group and alkyl, aryl, and alkoxy groups having up to about 6 carbon atoms. Each R.sub.4 is selected from the group consisting of hydrogen and alkyl and aryl groups having up to about 6 carbon atoms. "n" is selected so that the average molecular weight of the silicone intermediates is from about 500 to about 2000. In the binder, the weight ratio of silanes to polyols is greater than about 5:1 and the weight ratio of silane…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.