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US 5,766,273 AGranted
Polymer blends and their use as additives for mineral oil middle distillates
AssigneeBASF SE
InventorsGabriele Dralle-Voss, Knut Oppenlander, Bernd Wenderoth, Dieter Faul, Wolfgang Kasel
Life of this patent
Estimating the term…
Abstract
Polymer blends contain a) from 10 to 90% by weight of an imide of a copolymer based on an .alpha.-olefin and on an ethylenically unsaturated dicarboxylic acid and a polyamine and b) from 10 to 90% by weight of a copolymer which differs from a) and contains at least two monomers selected from the group consisting of ethylene, acrylates, vinyl esters, vinyl ethers and ethylenically unsaturated dicarboxylic acids or dicarboxylic acid derivatives, and are used as additives for mineral oil middle distillates.
Claims8
a polymer blend containing
- a) from 10 to 90% by weight of an imide of a copolymer based on an .alpha.-olefin and on an ethylenically unsaturated dicarboxylic acid, which may furthermore contain up to 10 mol % of at least one further ethylenically unsaturated monomer selected from acrylic acid, methacrylic acid, esters derived therefrom or vinyl esters, and a polyamine and
- b) from 10 to 90% by weight of a copolymer which differs from a) and contains at least two monomers selected from ethylene, acrylates, vinyl esters, vinyl ethers, ethylenically unsaturated dicarboxylic acids, dicarboxylic acid esters or dicarboxylic anhydrides.
Dependencies are inferred from the claim text.