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US4127872A
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Novel amino siloxane lubricants
Assignee: RCA Corp
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Filing: 1977-03-07
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Granted: 1978-11-28
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Expires: 1997-03-07
Abstract
Abstract Novel siloxane lubricants of the formula ##STR1## wherein R 1 is methyl or (CH 3 ) 3 SiO--, R 2 is methyl, R 3 is ##STR2## WHEREIN R 4 is methyl or --(CH 2 ) n NH--CH 2 ) m NH 2 , n is an integer of at least 3, m is an integer of at least 2 and x can be 0 or an integer, and dimers thereof.
Inventors
- 👤 Elizabeth Shen Lo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:53
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/485; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
In information storage means adapted to provide capacitance variations through a pick-up means, said storage means comprising a conductive storage medium in which information is recorded in the form of geometric variations on a conductive surface thereof, a dielectric coating disposed over said conductive surface and a thin coating of a lubricant over said dielectric coating, the improvement wherein said lubricant is an aminosiloxane of the formula ##STR16## wherein R 1 is methyl or (CH 3 ) 3 SiO--, R 2 is methyl, R 3 is ##STR17## wherein R 4 is methyl or --(CH 2 ) n NH--(CH 2 ) m NH 2 , n is an integer of at least 3, m is an integer of at least 2 and x can be 0 or an integer, or dimers thereof.
Claim 2
Dependent Claim
131 words
In information storage means adapted to provide capacitance variations through a pick-up means, said storage means comprising a conductive storage medium in which information is recorded in the form of geometric variations on a conductive surface thereof, a dielectric coating disposed over said conductive surface and a thin coating of a lubricant over said dielectric coating, the improvement wherein said lubricant is an aminosiloxane of the formula ##STR16## wherein R 1 is methyl or (CH 3 ) 3 SiO--, R 2 is methyl, R 3 is ##STR17## wherein R 4 is methyl or --(CH 2 ) n NH--(CH 2 ) m NH 2 , n is an integer of at least 3, m is an integer of at least 2 and x can be 0 or an integer, or dimers thereof.
Claim 3
Dependent Claim
148 words
In a capacitance video frequency recording means in the shape of a disc having a spiral groove on a face thereof and video information in the form of geometric variations in said groove, said disc having about 5,000 grooves per inch, said disc having a thin conductive layer on said face, a thin dielectric layer disposed over the conductive layer and a thin conformal coating of a lubricant disposed over the dielectric layer, the improvement wherein said lubricant is an aminosiloxane of the formula ##STR18## wherein R 1 is methyl or (CH 3 ) 3 SiO--, R 2 is methyl, R 3 is ##STR19## wherein R 4 is methyl or --CH 2 ) n NH--CH 2 ) m NH 2 , n is an integer of at least 3, m is an integer of at least 2 and x can be 0 or an integer, or dimers thereof.
Claim 4
Dependent Claim
148 words
In a capacitance video frequency recording means in the shape of a disc having a spiral groove on a face thereof and video information in the form of geometric variations in said groove, said disc having about 5,000 grooves per inch, said disc having a thin conductive layer on said face, a thin dielectric layer disposed over the conductive layer and a thin conformal coating of a lubricant disposed over the dielectric layer, the improvement wherein said lubricant is an aminosiloxane of the formula ##STR18## wherein R 1 is methyl or (CH 3 ) 3 SiO--, R 2 is methyl, R 3 is ##STR19## wherein R 4 is methyl or --CH 2 ) n NH--CH 2 ) m NH 2 , n is an integer of at least 3, m is an integer of at least 2 and x can be 0 or an integer, or dimers thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |