- 专利标题: High Viscosity Index Comb Polymer Viscosity Modifiers and Methods of Modifying Lubricant Viscosity Using Same
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申请号: US17109655申请日: 2020-12-02
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公开(公告)号: US20210189281A1公开(公告)日: 2021-06-24
- 发明人: Nga Nguyen , Ronald Lewis , Ewan Galbraith
- 申请人: lnfineum International Limited
- 申请人地址: GB Abingdon Oxfordshire
- 专利权人: lnfineum International Limited
- 当前专利权人: lnfineum International Limited
- 当前专利权人地址: GB Abingdon Oxfordshire
- 主分类号: C10M145/14
- IPC分类号: C10M145/14 ; C08F220/18 ; C08F220/28 ; C10M169/04
摘要:
A comb copolymer viscosity modifier may be made by polymerization comprising at least, or consisting essentially of, the following monomers: (a) (optionally from 7.0 wt % to 18 wt %, by repeat units, of) a hydrogenated polybutadiene-based (alk)acrylate ester macromonomer; (b) (optionally from 33 wt % to 64 wt %, by repeat units, of) a C3-C8 alkyl (alk)acrylate ester monomer; (c) a C12-C24 alkyl (alk)acrylate ester monomer; and (d) (optionally from 3.0 wt % to 25 wt %, by repeat units, of) H-endcapped, C1-C18 alkyl-endcapped, or C6-C20 aryl-, aralkyl-, or alkaryl-endcapped C2-C6 oxyalkyl or C2-C6 oligo(alkylene glycol)-based (alk)acrylate ester monomer, wherein repeat units based on monomer (c) and/or monomer (d) comprise at least 21.0 wt % (and optionally up to 35.0 wt %) of repeat units of the comb copolymer viscosity modifier. Lubricant compositions comprising the comb copolymer viscosity modifier, as well as uses thereof and methods for modifying viscosity and dispersancy, are also contemplated.
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