Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Solid hydrocarbon polymer
Patent
1998-07-02
2000-01-25
McAvoy, Ellen M.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Solid hydrocarbon polymer
44459, 585 10, 585 12, 5253317, 5253319, 5253337, C10M14300, C10L 116
Patent
active
060178590
ABSTRACT:
Polymers (including copolymers) derived from one or more olefins, such including ethylene and C.sub.3 -C.sub.20 .alpha.-olefins such as propylene and 1-butene, which polymers have (a) an average ethylene sequence length, ESL, of from about 1.0 to less than about 3.0; (b) an average of at least 5 branches per 100 carbon atoms of the polymer chains comprising the polymer; (c) at least about 50% of said branches being methyl and/or ethyl branches; (d) at least about 30% of said polymer chains terminated with a vinyl or vinylene group; (e) a number average molecular weight, Mn, of from about 300 to about 15,000 when the polymer is intended for dispersant or wax crystal modifier uses and up to about 500,000 where intended for viscosity modifier uses; and (f) substantial solubility in hydrocarbon and/or synthetic base oil. The polymers are produced using late-transition-metal catalyst systems and, preferably, inexpensive, highly dilute refinery or steam cracker feed streams that have undergone only limited clean-up steps. Fuel and lubricating oil additives, particularly dispersants, wax crystal modifiers and flow improvers, are produced. Where functionalization and derivatization of these polymers is required for such additives it is facilitated by the olefinic structures available in the polymer chains.
REFERENCES:
patent: 5811379 (1998-09-01), Rossi et al.
Emert Jacob
Gindelberger David Edward
Rossi Albert
Sher Jaimes
Stanat Jon Edmond
Exxon Chemical Patents Inc
McAvoy Ellen M.
LandOfFree
Polymers derived from olefins useful as lubricant and fuel oil a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymers derived from olefins useful as lubricant and fuel oil a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymers derived from olefins useful as lubricant and fuel oil a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2315886