公开(公告)号：US20230265265A1

公开(公告)日：2023-08-24

申请号：US18004692

申请日：2021-07-30

Applicant: SHELL OIL COMPANY

Inventor： Dawid John D'MELO ,  Richard Emest TAYLORR ,  Bulent TUGAL

IPC: C08K5/526 ,  C08K5/372

CPC classification number: C08K5/526 ,  C08K5/372

Abstract: The invention relates to an additive composition, wherein the additive composition comprises anti-oxidants and an asphaltene dispersant, wherein the anti-oxidants are tris (2,4-ditert butyl) phenyl phosphite and 3,3′-thiodipropionic acid dioctadecylester, and wherein the asphaltene dispersant is polyethylene glycol monoalkyl ether. The invention additionally relates to a bituminous composition comprising anti-oxidants and an asphaltene dispersant, wherein the anti-oxidants are tris (2,4-ditert butyl) phenyl phosphite and 3,3′-thiodipropionic acid dioctadecylester, and wherein the asphaltene dispersant is polyethylene glycol monoalkyl ether. The invention also relates to an asphalt composition comprising the bituminous composition with resistance to short-term and long-term chemical ageing. The invention further relates to the use of an additive composition to reduce short-term and long-term chemical ageing of the bituminous compositions.