Copolymer dispersants via vinyl terminated propene polymers

Details Copolymer dispersants via vinyl terminated propene polymers Copolymer dispersants via vinyl terminated propene polymers

1995-10-03

1997-04-01

Willis, Jr., Prince

Fuel and related compositions

Liquid fuels

Heterocyclic carbon compound containing a hetero ring having...

44393, 44394, 508235, 508466, 525301, 525322, 525337, 525340, 525343, 525344, 525374, 525379, 525380, 525381, 525386, C10L 118

Patent

active

056161530

ABSTRACT:
A novel copolymer of an unsaturated acidic reactant and an atactic vinyl terminated propene polymer (VTPP) and its use in preparation of fuel and lubricant additives is taught. The VTPP has a major amount of polymer chains containing terminal vinyl unsaturation, a number average molecular weight of at least 500, and comprises at least 70 weight per cent propene and 0 to 30 weight per cent of at least one olefin selected from the group consisting of C.sub.2 and C.sub.4 to C.sub.10 olefins. The unsaturated acidic reactant comprises at least one unsaturated C.sub.4 to C.sub.10 carboxylic or dicarboxylic acid or anhydride. An oil soluble dispersant additive of the invention useful in oleaginous compositions is prepared by contacting the atactic VTPP copolymer with at least one nucleophilic reagent selected from the group consisting of amines, alcohols, metal reactants and mixtures thereof under conditions effective to form adducts of the nucleophilic reagent with the copolymer. The novel dispersants made from the copolymers and terpolymers of the invention can be polymeric succinic ester-amide dispersants, polymeric succinimide dispersants, polymeric succinic amide-triazole dispersants, or polymeric succinic triazole dispersants. Fuel and lubricant compositions containing such additives are a part of the invention.

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Article -J. Am. Chem. Soc. 1994, 116,10015-10031 "Cationic Zirconocene Olefin Polymerization Catalysts Based on the Organo-Lewis Acid Tris (pentafluorophenyl)borane. A Synthetic, Structural, Solution Dynamic, and Polymerization Catalytic Study" (Yang et al.) Date Unknown.

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