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30 results about "C60 fullerene" patented technology

The calculated lung deposition rate and deposition fraction were 41 and 50% greater, respectively, in C60 fullerene nanoparticle-exposed group than the C60 fullerene microparticle-exposed group. Lung half-lives for C60 fullerene nanoparticles and microparticles were 26 and 29 days, respectively...

Preparation method and application of implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres

The invention relates to a preparation method and an application of implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres so as to effectively solve the problems of preparation of the implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres and application of the implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres in medicines for photodynamic therapy of tumors. According to the technical scheme for solving the problems, the preparation method is characterized in that fullerene molecules are connected to polylactic acids through chemical bonds, the relative molecular weight of the polylactic acids is 10000-18000, fullerene is C60 fullerene, and the particle sizes of the microspheres are 1-10 micrometers. The preparation method is simple; preparation conditions are easily satisfied; the intrinsic characteristics of the fullerene are not damaged; and the implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres enable photodynamic therapy and chemotherapy to simultaneously play a role in tumor treatment and are innovation of the medicines for treating the tumors.
Owner:ZHENGZHOU UNIV

Preparation method and application of implantable fullerene polylactic acid self-agglomeration drug-loaded sustained-release microspheres

The invention relates to a preparation method and an application of implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres so as to effectively solve the problems of preparation of the implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres and application of the implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres in medicines for photodynamic therapy of tumors. According to the technical scheme for solving the problems, the preparation method is characterized in that fullerene molecules are connected to polylactic acids through chemical bonds, the relative molecular weight of the polylactic acids is 10000-18000, fullerene is C60 fullerene, and the particle sizes of the microspheres are 1-10 micrometers. The preparation method is simple; preparation conditions are easily satisfied; the intrinsic characteristics of the fullerene are not damaged; and the implantable fullerene polylactic acid self-agglomerating drug-loaded sustained release microspheres enable photodynamic therapy and chemotherapy to simultaneously play a role in tumor treatment and are innovation of the medicines for treating the tumors.
Owner:ZHENGZHOU UNIV

Additive composition for improving performance of lubricant, and preparation method and application method thereof

The invention relates to an additive composition for improving the performance of lubricant, and a preparation method and application method thereof. The preparation method comprises the following steps: performing hydroxylation reaction for C60 fullerene to obtain C60(OH)8-15 or C60(OH)24-26, then catalytically esterifying the hydroxyl by virtue of short chain carboxylic acid C1-5COOH to obtain an esterification product C60(OOC-R)8-15 or 24-26 which is adopted as a component A, wherein the additive composition also comprises an ester dissolving agent and an antioxidant synergistic agent, andthe weight ratio of the three components, i.e., a weight ratio of component A to ester dissolving agent to antioxidant synergistic agent is (0.1 to 10): (2 to 20): (10 to 40). The additive compositiondoes not comprise water, sulfur, phosphorus, chlorine and mechanical impurities and is environment-friendly; and the additive composition has good wear resistance and friction reduction performance:the friction coefficient of the lubricating oil is decreased by 18.8 percent to 34.3 percent, an average grinding spot diameter is reduced to 0.49, and the oxidation induction period is increased by one time or more in the existence of the high-temperature high-pressure oxygen. After the lubricating grease is added, when the device is in an idle state, the input current can be decreased by 16.3 to20.3 percent.
Owner:江苏凯尚碳科技有限公司
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