Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic compound containing boron
Patent
1995-01-12
1999-04-06
Howard, Jacqueline V.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Organic compound containing boron
508465, C10M14102
Patent
active
058917861
ABSTRACT:
The fluids have an oil-soluble boron content of about 0.001 to about 0.1%, an oil-soluble phosphorus content of about 0.005 to about 0.2%, and either no metal additive content or an oil-soluble metal content as one or more metal-containing additives of no more than about 100 ppm. Included in the fluids are: (a) at least 70 wt % of hydrogenated poly-.alpha.-olefin oligomer fluid with a viscosity in the range of 2-6 cSt at 100.degree. C.; (b) 2-20 wt % of acrylic viscosity index improver; (c) 4-25 wt % of oil-soluble dialkyl ester of a C.sub.4 to C.sub.14 .alpha.,.omega.-dicarboxylic acid with a pour point of -45.degree. C. or lower; (d) ashless dispersant; (e) friction modifier; and (f) oil-soluble inhibitors. The components are such that the fluid has (i) a KV of at least 6.8 cSt at 100.degree. C., (ii) a BV of 15,000 cP or less at -40.degree. C., (iii) a KV at 100.degree. C. of at least 6.0 cSt after 4 hours and at least 5.0 cSt after 20 hours in the Volkswagen taper roller bearing shear stability test. The fluids possess other excellent performance properties.
REFERENCES:
patent: 3668236 (1972-06-01), Cyba
patent: 4382006 (1983-05-01), Horodysky
patent: 4409000 (1983-10-01), Le Suer
patent: 4704217 (1987-11-01), Sweeney et al.
patent: 5078893 (1992-01-01), Ryer et al.
patent: 5089156 (1992-02-01), Chrisope et al.
patent: 5286394 (1994-02-01), Moore
patent: 5348670 (1994-09-01), McDonald et al.
patent: 5360562 (1994-11-01), Chrisope et al.
patent: 5372735 (1994-12-01), Ohlani et al.
Smith David W.
Srinivasan Sanjay
Ethyl Corporation
Howard Jacqueline V.
Rainear Dennis H.
LandOfFree
Substantially metal free synthetic power transmission fluids hav does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Substantially metal free synthetic power transmission fluids hav, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Substantially metal free synthetic power transmission fluids hav will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1371107