• 专利标题:   Selective laser sintering for forming highly spherical particles, involves depositing carbon nanomaterial graft-polyolefin particles on nanomaterial surface, exposing polyolefin particles to laser, for fusing polymer particles, where particles comprise polyolefin grafted to carbon nanomaterial.
  • 专利号:   US2022363799-A1, KR2022155907-A, CN115366286-A, JP2022176887-A, EP4098425-A1, CA3158065-A1
  • 发明人:   FARRUGIA V M, SRISKANDHA S E, SIBANTIISWARISLISKANDA, EMPARUZIA V, SRISKANDAR S E
  • 专利权人:   XEROX CORP, XEROX CORP, XEROX CORP
  • 国际专利分类:   B29C064/153, B29C064/314, B33Y010/00, B33Y040/10, B33Y070/00, C08F292/00, C08L051/10, B33Y040/00, B33Y070/10, C08F004/32, B29B009/06, B29B009/12, B29B009/16, B29C064/165, B29C064/268, B82Y040/00, C08J003/12, C08K003/04, C08L101/00, C09C001/44, C09C003/10
  • 专利详细信息:   US2022363799-A1 17 Nov 2022 C08F-292/00 202299 English
  • 申请详细信息:   US2022363799-A1 US321759 17 May 2021
  • 优先权号:   US321759

▎ 摘  要

NOVELTY - Selective laser sintering process involves: 1) depositing carbon nanomaterial-graft-polyolefin (CNM-g-polyolefin) particles optionally in combination with other thermoplastic polymer particles on a surface, where the CNM-g-polyolefin particles comprise a polyolefin grafted to a carbon nanomaterial; and 2) then exposing at least a portion of the CNM-g-polyolefin particles to a laser, for fusing the polymer particles and forming a consolidated body by selective laser sintering. USE - Selective laser sintering is used for forming highly spherical particles comprising CNM-g-polyolefin. ADVANTAGE - The process having entirely different structural and mechanical tolerances, enables preparing highly spherical particles comprising CNM-g-polyolefin. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the method used for forming highly spherical CNM-g-polyolefin particles, which involves: i) mixing a mixture comprising: (a) CNM-g-polyolefin, (b) a carrier fluid that is immiscible with the polyolefin of CNM-g-polyolefin, optionally (c) a thermoplastic polymer not grafted to CNM, and optionally (d) an emulsion stabilizer, at temperature more than the melting point or softening temperature of polyolefin of CNM-g-polyolefin and the thermoplastic polymer, when included, and at a shear rate sufficiently high to disperse the CNM-g-polyolefin in the carrier fluid; ii) cooling the mixture to below the melting point or softening temperature, to form CNM-g-polyolefin particles; and iii) separating the CNM-g-polyolefin particles from the carrier fluid.