High density information disc lubricants
US4351048A · kind A · utility
8Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1981 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Aug 27, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31667
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
High density information discs are lubricated with a silyl quaternary ammonium salt of the formula ##STR1## wherein R is a lower alkyl group of 1-5 carbon atoms; R.sub.3 is methyl or ethyl; R.sub.4 is an alkyl group of 1-12 carbon atoms and X is --OSO.sub.2 --(CH.sub.2).sub.n CH.sub.3 wherein n is an integer of 5-12. Discs lubricated with this lubricant exhibit improved stability to high temperature, high relative humidity environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.