• 专利标题:   Modified asphalt particles useful in high temperature aqueous drilling fluid, comprise base asphalt, aminated graphene microsheet, rubber powder, reaction accelerator, and additive.
  • 专利号:   CN114479483-A, CN114479483-B
  • 发明人:   WU X, GUO X, GUO J, FU L
  • 专利权人:   SINOPEC DALIAN PETROLEUM PETROCHEM RES, CHINA PETROLEUM CHEM CORP, SINOPEC CORP DALIAN RES INST PETROLEUM
  • 国际专利分类:   C08K003/04, C08K003/26, C08K007/00, C08K009/04, C08L011/00, C08L045/00, C08L009/02, C08L009/06, C08L095/00, C09K008/03, C09K008/035, C09K008/24
  • 专利详细信息:   CN114479483-A 13 May 2022 C08L-095/00 202265 Chinese
  • 申请详细信息:   CN114479483-A CN11159456 27 Oct 2020
  • 优先权号:   CN11159456

▎ 摘  要

NOVELTY - Modified asphalt particles comprise 100 pts. wt. base asphalt, 0.5-1 pt. wt. aminated graphene microsheet, 5-20 pts. wt. rubber powder, 1-5 pts. wt. reaction accelerator, and 0.5-2 pts. wt. additive. USE - The modified asphalt particles are useful in drilling fluid (claimed), preferably high temperature aqueous drilling fluid. ADVANTAGE - The modified asphalt particles have small particle size, and excellent high temperature resistance and deformation ability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the modified asphalt particles, which involves: (1) preparing aminated graphene microsheet; (2) mixing and reacting aminated graphene microsheet, base asphalt, rubber powder, reaction accelerator and additive to prepare modified asphalt; and (3) freezing, crushing and sieving.