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US 11,174,333 B2Granted
Macromonomers containing polyisobutene groups, and homopolymers or copolymers thereof
AssigneeBASF SE
InventorsAndrea Misske, Anja Thomas, Christoph Fleckenstein, Friederike Fleischhaker, Szilard Csihony, Matthias Gerst, Stephan Moebius, Ulrike Licht, Andreas Schwarz, Eric Neuhaus
Life of this patent
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Abstract
The present invention describes novel macromonomers containing polyisobutene groups and homo- or copolymers thereof.
Claims20
A process for preparing
- a compound (A) of the formula (I)
- in which
- R1 to R5 are each independently selected from the group consisting of hydrogen, C1-C20-alkyl, C1-C20-alkyloxy and C5-C3500-polyisobutyl and C5-C3500-polyisobutenyl,
- R is an alkylene group having 2 to 10 carbon atoms,
- R6 is hydrogen or methyl,
- R7 is hydrogen, methyl or COOR8,
- R8 is hydrogen or C1-C20-alkyl and
- n is a positive integer from 1 to 50,
- with the proviso that
- at least one of the R1 to R5 radicals is a C5-C3500-polyisobutyl or C5-C3500-polyisobutenyl,
- and is derived from polyisobutene having a content of terminal double bonds of at least 50 mol %, based on the total number of polyisobutene macromolecules,
- wherein phenols of the formula
- are reacted with alkylene carbonates of the formula
- followed by a decarboxylation and subsequent esterification with (meth)acrylic acid, crotonic acid, fumaric acid, maleic acid or maleic anhydride, or by transesterification with (meth)acrylic esters, crotonic esters, fumaric esters or maleic esters.
11 more elements
A fuel additive or a lubricant additive which comprises a copolymer comprising, in polymerized form,
- at least one compound (A) of the formula (I)
- in which
- R1 to R5 are each independently selected from the group consisting of hydrogen, C1-C20-alkyl, C1-C20-alkyloxy and C5-C3500-polyisobutyl and C5-C3500-polyisobutenyl,
- R is an alkylene group having 2 to 10 carbon atoms,
- R6 is hydrogen or methyl,
- R7 is hydrogen, methyl or COOR8,
- R8 is hydrogen or C1-C2O-alkyl and
- n is a positive integer from 1 to 50,
- with the proviso that
- at least one of the R1 to R5 radicals is a C5-C3500-polyisobutyl or C5-C3500-polyisobutenyl,
- and is derived from polyisobutene having a content of terminal double bonds of at least 50 mol %, based on the total number of polyisobutene macromolecules,
- and at least one monomer (B) selected from the group consisting of
- (B1) (meth)acrylates other than (A),
- (B3) alkyl vinyl ethers
- (B4) styrene and α-methylstyrene and
- (B7) (meth)acrylamides.
13 more elements
Dependencies are inferred from the claim text.