The present invention relates to lubricating greases comprising at least one thickening agent and at least one lubricating oil, wherein the lubricating grease contains at least one polymeric structure improver that can be obtained by polymerization of monomer compositions, which are composed of
a) 0 to 40 wt %, relative to the weight of the monomer compositions for synthesis of the polymeric structure improvers, of at least one (meth)acrylate of formula (I)
in which R represents hydrogen or methyl, R
1
denotes a straight-chain or branched alkyl moiety having 1 to 5 carbon atoms,
b) 40 to 99.99 wt %, relative to the weight of the monomer compositions for synthesis of the polymeric structure improvers, of at least one (meth)acrylate of formula (II)
in which R represents hydrogen or methyl, R
2
denotes a straight-chain or branched alkyl moiety having 6 to 30 carbon atoms,
c) 0.01 to 20 wt %, relative to the weight of the monomer compositions for synthesis of the polymeric structure improvers, of monomers containing acid groups or salts thereof, d) 0 to 59.99 wt %, relative to the weight of the monomer compositions for synthesis of the polymeric structure improvers, of comonomer.
本发明涉及由至少一种稠化剂和至少一种润滑油组成的润滑脂,其中润滑脂含有至 少一种聚合物结构改良剂,该聚合物结构改良剂可通过单体组合物聚合获得,单体组合 物包括
a) 相对于用于合成聚合结构改进剂的单体组合物重量,0-40 wt % 的至少一种式 (I) 的(甲基)
丙烯酸酯
其中 R 代表氢或甲基,R
1
表示具有 1 至 5 个碳原子的直链或支链烷基、
b) 相对于用于合成聚合物结构改进剂的单体组合物的重量,含有 40 至 99.99 wt % 的至少一种式(II)的(甲基)
丙烯酸酯。
其中 R 代表氢或甲基,R
2
表示具有 6 至 30 个碳原子的直链或支链烷基、
c) 相对于用于合成聚合物结构改良剂的单体组合物重量,0.01-20 wt % 的含酸基团的单体或其盐, d) 相对于用于合成聚合物结构改良剂的单体组合物重量,0-59.99 wt % 的共聚单体。