Dielectric compositions stabilized against water treeing with organo silane compounds containing the azomethine group and partial condensation products
US4263158A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Sep 18, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dielectric composition comprising ethylene polymer and effective amounts, as a water treeing inhibitor, of at least one organo silane of the following formula: ##STR1## wherein R and R.sub.1 are independently selected from hydrogen, a hydrocarbyl group or substituted hydrocarbyl groups wherein the substituents are hydroxy, halogen, nitro, C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.8 alkoxy; or R and R.sub.1 together with the adjacent carbon atom form a ring of 3 to 7 carbon atoms; R.sub.2 is C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.18 alkoxy, C.sub.6 to C.sub.18 aryl, C.sub.1 to C.sub.8 acyloxy, C.sub.6 to C.sub.18 substituted or unsubstituted aryloxy; R.sub.3 and R.sub.4 are independently selected from C.sub.1 to C.sub.18 alkoxy, C.sub.6 to C.sub.18 substituted or unsubstituted aryloxy or C.sub.1 to C.sub.8 acyloxy; Y is C.sub.1 to C.sub.8 alkylene, C.sub.6 to C.sub.18 substituted or unsubstituted arylene or --CH.sub.2 CH.sub.2 NH(CH.sub.2).sub.3 --. Partial condensation products of the silanes also have been found to inhibit water treeing in ethylene polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.