Flow improvers and cloud point depressants

Fuel and related compositions – Liquid fuels – Containing organic -c

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252 56R, C10L 118

Patent

active

050115057

ABSTRACT:
Additives suitable for improving the flow and/or depressing the cloud point of crude oils, lubricating oils and especially fuel oils are polymers containing defined alkyl groups of at least 8 carbon atoms chain length. Such polymers are either (a) of a mixture of monomers having only two alkyl groups being at least 3 carbon atoms longer than the other or (b) of a mixture of monomers having only three alkyl groups each differing by at least 3 carbon atoms and the middle alkyl group being half the combined length of the other two. Alternatively, the polymer may be derived from a monomer having the two defined alkyl groups (a) or the three defined alkyl groups (b).

REFERENCES:
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patent: 4175926 (1979-11-01), Wisotsky
patent: 4261703 (1981-04-01), Tack et al.
patent: 4419106 (1983-12-01), Miller
patent: 4661122 (1987-04-01), Lewtas
patent: 4670516 (1987-06-01), Sackmann et al.
patent: 4713088 (1987-12-01), Tack et al.
patent: 4839074 (1989-06-01), Rossi et al.

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