FUNCTIONALIZED C4 TO C5 OLEFIN POLYMERS AND LUBRICANT COMPOSITIONS COMPRISING THE SAME

To provide a lubricant that improves fuel efficiency, maintains durability and wear prevention, and prevents soot-induced viscosity increase.SOLUTION: The present invention relates to functionalized polymers and compositions comprising the same, the functionalized polymers have i) an Mw/Mn of less than 2, ii) a functionality distribution (Fd) value of 3.5 or less, and iii) an Mn of 10,000 g/mol or more (GPC-PS) of the polymer prior to functionalization, provided that, if the polymer prior to functionalization is a copolymer of isoprene and butadiene, then the Mn of the copolymer is greater than 25,000 g/mol (GPC-PS), and the functionalized polymers comprise C4-5 olefin-containing amide, imide, and/or ester functionalized partially or fully saturated polymers.SELECTED DRAWING: None 【課題】燃費が向上し、耐久性及び摩耗防止を維持し、煤煙誘導粘度増加を防止する潤滑油を提供する。【解決手段】官能化ポリマー及びそれらを含む組成物であって、官能化ポリマーは、ｉ）２未満のＭｗ／Ｍｎ、ｉｉ）３．５以下（ＧＰＣ－ＰＳ）の官能価分布（Ｆｄ）値、及びｉｉｉ）１０，０００ｇ／ｍｏｌ以上（ＧＰＣ－ＰＳ）の官能化前のポリマーのＭｎを有し、ただし、官能化前のポリマーがイソプレン及びブタジエンのコポリマーである場合は、コポリマーのＭｎは２５，０００ｇ／ｍｏｌ（ＧＰＣ－ＰＳ）よりも大きい、Ｃ４－５オレフィンを含むアミド、イミド、及び／又はエステル官能化部分的又は完全飽和ポリマーを含む、官能化ポリマー及びそれらを含む組成物に関する。【選択図】なし