发明名称 |
Process for the preparation of nano-scaled graphene platelets with a high dispersibility in low-polarity polymeric matrixes and relative polymeric compositions |
摘要 |
A process for the production of nano-scaled graphene platelets which comprises: a) putting a graphite material in contact with molecular or atomic oxygen or a substance capable of releasing molecular or atomic oxygen, obtaining a precursor consisting of graphite material functionalized with oxygen groups (FOG), characterized by a carbon/oxygen molar ratio higher than 8:1 b) subsequently, reducing (chemically or physically) said FOG precursor obtaining nano-scaled graphene platelets characterized by a carbon/oxygen molar ratio higher than 20:1. |
申请公布号 |
US9139440(B2) |
申请公布日期 |
2015.09.22 |
申请号 |
US201013505862 |
申请日期 |
2010.10.27 |
申请人 |
Versalis S.p.A. |
发明人 |
Felisari Riccardo;Valentino Olga;Casalini Alessandro |
分类号 |
C01B31/00;C01B31/04;B82Y30/00;B82Y40/00 |
主分类号 |
C01B31/00 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A process for producing a nano-scaled graphene platelet, the process consisting of:
(a) contacting a graphite material with oxygen or ozone, wherein the oxygen or ozone comprises up to 50% by volume of water in the liquid or gaseous state, to provide a precursor comprising a functionalized graphite material comprising oxygen groups and having a carbon/oxygen molar ratio higher than 8:1; and subsequently, (b) chemically or physically reducing the precursor, to provide a nano-scaled graphene platelet having a carbon/oxygen molar ratio higher than 20:1. |
地址 |
San Donato Milanese IT |