• 专利标题:   Master batch composition, used to make polymer nanocomposite that is used as electrical shielding material, for printed wiring in batteries and solar cells, and to make rubber for tires, comprises polymer and graphene.
  • 专利号:   WO2014144139-A1, EP2970627-A1, US2016032061-A1, IN201509043-P1, CN105452359-A, EP2970627-A4, US9790334-B2
  • 发明人:   CLAUSS A D, HALL M C, PAN G, TAFT D D, WIETFELDT N R
  • 专利权人:   XOLVE INC, CLAUSS A D, PAN G, WIETFELDT N R, HALL M C, TAFT D D, XOLVE INC, RELIANCE IND CO LTD, RELIANCE IND LTD
  • 国际专利分类:   B82B001/00, B82Y030/00, B82Y040/00, C08K003/04, C08J003/22, C08L039/06, C08L077/06, C08J003/205, C08J005/00
  • 专利详细信息:   WO2014144139-A1 18 Sep 2014 C08K-003/04 201465 Pages: 39 English
  • 申请详细信息:   WO2014144139-A1 WOUS028425 14 Mar 2014
  • 优先权号:   US787407P, WOUS028425, US14776022

▎ 摘  要

NOVELTY - Master batch composition comprises a polymer and at least 15 wt.% of graphene. USE - The master batch composition is useful for making a polymer nanocomposite (claimed), which is useful: as electrical shielding material; for printed wiring in batteries and photoelectric devices (solar cells); and for producing rubber for tires. ADVANTAGE - The master batch composition provides the polymer nanocomposite having high degree of exfoliation and dispersion of graphene nanoplatelets within the polymer matrix. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a polymer nanocomposite comprising a polymer and graphene produced by providing the master batch composition and mixing some or all of the master batch with a polymer to provide the polymer nanocomposite; (2) making the master batch composition, comprising mixing a slurry of graphene in a solvent system with a polymer, and removing the solvent system to produce a master batch comprising 15-60% graphene; (3) making a graphene/polymer (poly(vinylpyrrolidone)) master batch, comprising concentrating a solution or stable dispersion of exfoliated graphene above the solubility and stable dispersion limit of the exfoliated graphene, dissolving poly(vinylpyrrolidone) in the graphene/solvent slurry in a ratio of 1:1-1:10 graphene to poly(vinylpyrrolidone), and removing the solvent with continuous mixing to isolate the resultant graphene/poly(vinylpyrrolidone) master batch as a solid; (4) a graphene/polymer master batch composition comprising a thermoplastic polymer comprising greater than 20 wt.% of highly dispersed and exfoliated pristine graphene nanoplatelets such that the average thickness of the nanoplatelets does not exceed 5 atomic layers, where a minimum of 10% of the nanoplatelets are single atomic layer graphene, and the oxygen content of the graphene is less than 1%; and (5) making graphene/polymer master batch, comprising exfoliating graphene in a polymerizable solvent to provide a dispersion of exfoliated graphene in the polymerizable solvent and polymerizing the polymerizable solvent to produce the graphene/polymer master batch.