Patents Assigned to Changchun Institute of Applied Chemistry Chinese Academy of Science
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Patent number: 7410629Abstract: The present invention provides a method for preparing a carbon nanotube material. In the present invention, a mixture of polyolefin and modified montmorillonite is used as the carbon source. Under the action of a catalyst, a carbon nanotube is synthesized in air. The present invention can address the problem of “white pollution” caused by waste plastics, such as waste polyolefin polymers.Type: GrantFiled: December 3, 2004Date of Patent: August 12, 2008Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Tao Tang, Xuecheng Chen, Xiaoyu Meng
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Publication number: 20080177060Abstract: This invention relates to the use of axial substituted phthalocyanine compound as a semiconductor layer between the source/drain electrodes of organic thin-film transistor. The centre ligand of the axial substituted phthalocyanine compound is an atom with 3 valences or higher, and the axial ligands are chlorine, fluorine, or oxygen which can be connected with the centre ligands of axial substituted phthalocyanine compounds. Crystalline Film with high quality can be prepared on an organic substrate from the axial substituted phthalocyanine compound using vapor deposition process. These crystalline films have high carrier mobility, rich energy level, and stable performances and are easy for integrated process. The field effect mobility and the on/off Ratio of the organic thin-film transistor are 0.01 cm2/Vs or more and higher than 105, respectively.Type: ApplicationFiled: January 17, 2008Publication date: July 24, 2008Applicant: CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY CHINESE ACADEMY OF SCIENCESInventors: Donghang Yan, De Song, Feng Zhu, Bo Yu
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Patent number: 7339063Abstract: The present invention relates to compounds of quinolyl organic germanium ester having the following Formula 1 and the synthesis methods thereof. R1 and R2 are defined in the specification. Organic germanium acyl chloride and 8-hydroxylquinoline were used as the starting raw materials. Displacement reaction was carried out at 0-40° C., followed by hydrolysis reaction and then by changing the solvent, water soluble quinolyl organic germanium ester was finally obtained. The quinolyl organic germanium ester possesses better water solubility and fat solubility.Type: GrantFiled: June 9, 2005Date of Patent: March 4, 2008Assignee: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Xiaogang Qu, Guoqiang Shangguan
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Patent number: 7288611Abstract: Disclosed herein are a method for preparing a cis-1,4-polybutadiene with a controlled molecular weight distribution, comprising polymerizing butadiene monomers using a rare-earth catalyst system comprising: (a) at least one aliphatic hydrocarbon-soluble organometallic compound comprising at least one metal element chosen from the elements of atomic numbers 51-71 in the periodic table; (b) at least one organoaluminum compound of the formula: AlR1R22, (c) at least one aliphatic hydrocarbon-soluble halogen-containing compound; (d) optionally at least one alkylaluminum alkoxide; and (e) at least one conjugated double bond-containing organic compound, and methods of preparing the rare-earth catalyst system.Type: GrantFiled: September 27, 2004Date of Patent: October 30, 2007Assignee: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Liansheng Jiang, Xuequan Zhang, Weimin Dong, Xichun Liu, Jifu Bi
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Patent number: 7186785Abstract: This invention relates to A process for manufacturing a vinyl-rich polybutadiene rubber, comprising polymerizing butadiene in a solvent using a catalyst system comprising an iron-based catalyst as catalyst and a phosphite as ligand, said catalyst system comprising: (A) an organoiron compound; (B) an organoaluminum compound; and (C) a phosphite selected from a group consisting of dialkyl phosphite, trialkyl phosphite, diaryl phosphite, triaryl phosphite and mixtures thereof; wherein, the mole ratio of component B to component A is 5:100; and that of component C to component A is 0.5:10; and 80 wt % of macromolecules of the rubber have a vinyl group.Type: GrantFiled: July 27, 2004Date of Patent: March 6, 2007Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Liansheng Jiang, Xuequan Zhang
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Publication number: 20070004183Abstract: The present invention relates to a two-phase thermal method for the preparation of cadmium sulfide quantum dots. In the method, cadmium carboxylate containing 2 to 18 carbon atoms or cadmium oxide is selected as cadmium source; thiourea or thioacetamide is selected as sulfur source; oleic acid or trioctylphosphine oxide (TOPO) is selected as capping agent, and molar ratio of cadmium source to sulfur source is in a range of from 10:1 to 1:10, and molar ratio of cadmium source to capping agent is in a range of from 1:7 to 1:25. Water and water-insoluble organic compound in equal or similar volume are used as solvents forming a two-phase system. The mixture is heated at 120-180° C. in an autoclave for 0.5 to 24 hrs. By means of varying reaction time, cadmium sulfide quantum dots of different sizes could be prepared.Type: ApplicationFiled: June 21, 2005Publication date: January 4, 2007Applicant: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Qiang Wang, Daocheng Pan, Xiangling Ji, Shichun Jiang, Lijia An
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Patent number: 7101961Abstract: The present invention provides a method for preparation of poly(o-phenylenediamine) nano-belt comprising mixing aqueous solutions of o-phenylenediamine and of oxidant in a mole ratio of 1:0.1–1 under stirring; standing for 0.5–2 hrs at room temperature; and obtaining poly(o-phenylenediamine) nano-belt. The method is suitable for large-scale production. In the absence of template and surfactant, aqueous solutions of o-phenylenediamine and of oxidant are mixed in a specified mole ratio and thus obtain a poly(o-phenylenediamine) nano-belt with length of several hundred micrometers, width of several hundred nanometers and thickness of tens nanometers. The method is simple, quick and suitable for large-scale manufacture. The poly(o-phenylenediamine) nano-belt thus prepared possesses excellent semiconductor properties and is one of the most promising conductive polymer materials.Type: GrantFiled: June 10, 2005Date of Patent: September 5, 2006Assignee: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Erkang Wang, Xuping Sun, Shaojun Dong
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Patent number: 7060202Abstract: The present invention relates to a process for preparing rare earth trichromatic phosphor, comprising the following steps: (1) providing precursors for at least one composition formula selected from the group consisting of CaBPO5:xEu:yTb, CaAlrB1-rPO5:xEu:yTb and Ca2B5O9Cl:xEu:yTb, wherein x=0.02–0.05 (mole ratio), y=0.001–0.01 (mole ratio) and r=0.5–0.8; (2) grinding and mixing the precursors; and (3) calcining the product obtained in step (2) at 800–1000° C. for 3–5 hours. According to the present process, only one matrix material and two rare earth reactive ions (Eu3+ and Tb3+) are required to synthesize rare earth trichromatic phosphor. That is to say, no reducing reagent is needed; and absence of reducing agent(s) reduces environmental pollution.Type: GrantFiled: May 24, 2002Date of Patent: June 13, 2006Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Chunshan Shi, Zeren Ye, Yingliang Liu, Xiaotang Liu, Chunyu Zang
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Publication number: 20050282795Abstract: The present invention relates to compounds of quinolyl organic germanium ester having the following Formula 1 and the synthesis methods thereof. R1 and R2 are defined in the specification. Organic germanium acyl chloride and 8-hydroxylquinoline were used as the starting raw materials. Displacement reaction was carried out at 0-40° C., followed by hydrolysis reaction and then by changing the solvent, water soluble quinolyl organic germanium ester was finally obtained. The quinolyl organic germanium ester possesses better water solubility and fat solubility. Due to the existence of both drug active group (organic germanium part) and drug recognizing group (quinoline part) in the structure of the quinolyl organic germanium ester, the compound is expected to develop a novel kind of anti-tumor drug.Type: ApplicationFiled: June 9, 2005Publication date: December 22, 2005Applicant: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Xiaogang Qu, Guoqiang Shangguan
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Patent number: 6914258Abstract: A field effect transistor in sandwiched configuration having organic semiconductor, comprising: a substrate (1), a gate electrode (2) formed on the surface of the substrate (1), a gate insulation layer (3) formed on the substrate (1) and the gate insulation layer (2), which is characterized in that, further comprising: an active layer (4) formed on the gate insulation layer (3) but leaving a part of the gate insulation layer (3) to be exposed, a source and drain electrodes (5) formed on a part of the gate insulation layer (3) and a part of the active layer (4), and an active layer (6) formed on the exposed part of the gate insulation layer (3), the active layer (4), the source electrode and the drain electrode (5).Type: GrantFiled: August 21, 2003Date of Patent: July 5, 2005Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Donghang Yan, Jun Wang, Jian Zhang
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Patent number: 6847048Abstract: The present invention relates to an organic thin film transistor (OTFT) comprising: a substrate (1), a gate electrode (2) formed on the substrate (1), a gate insulation layer formed on the gate electrode, a source electrode (5) and a drain electrode (6) formed on the gate insulation layer including a first insulation layer (3) and a second insulation layer (4) with different dielectric constants, and an active layer (7) which overlays the source electrode (5) and the drain electrode (6). Without adding the conventional complicated processes like photolithography but adding two simple processes of spin coating or vaporously coating the second insulation film and self-aligned dry RIE, the present invention not only can improve the carrier's injection property so as to improve the OTFT device's properties, but also can block the leakage current of the gate insulation layer and reduce the device's parasitic capacitance.Type: GrantFiled: July 11, 2003Date of Patent: January 25, 2005Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Donghang Yan, Jianfeng Yuan
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Patent number: 6815529Abstract: This invention relates to a catalyst for producing aliphatic polycarbonate, which is composed of a rare-earth coordination compound; an alkyl metal compound; a polyol; and a carbonate. The catalytic efficiency of the catalyst of the present invention is more than 8×104 g polymer/mol RE(RE is rare earth metal). The number average molecular weight of the polymer is higher than 30,000. The degree of carbon dioxide fixation is more than 42 wt % and the content of alternative sequence structure exceeds 97%.Type: GrantFiled: August 29, 2001Date of Patent: November 9, 2004Assignee: Changchun Institute of Applied Chemistry Chinese Academy of SciencesInventors: Xiaojiang Zhao, Xianhong Wang, Fosong Wang
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Patent number: 6815391Abstract: The present invention relates to a method for preparing nano-level Pt/C electrocatalyst for cathode of fuel cell. By employing ammonium chloride, potassium chloride, ammonium bromide, potassium bromide, ammonium iodide or potassium iodide as anchoring agent for the chloroplatinic acid, the present invention realizes the preparation of Pt/C electrocatalyst with platinum micro-particles homogeneously distributed in the interstices as well as on the surfaces of the active carbon. The sizes of the platinum particles in the catalyst are homogeneous and their average diameter is in the range of 2.5 to 4.5 mm. The present method is a novel one for preparing nanometer level Pt/C electrocatalyst. Said electrocatalyst possesses high specific activity per unit mass for the catalytic reduction of oxygen.Type: GrantFiled: April 25, 2003Date of Patent: November 9, 2004Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Wei Xing, Xuguang Li, Tianhong Lu
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Patent number: 6806492Abstract: A organic semiconductor field effect transistor that can work in the depletion mode or super-inverse mode, comprising: a substrate (1), a gate electrode (2) formed on the substrate (1), a gate insulation layer (3) formed on the substrate (1) and the gate electrode (2), a first semiconductor layer (4) formed on the gate insulation layer (3), a source electrode and a drain electrode (5) formed on the first semiconductor layer (4), and a second semiconductor layer (6) formed on the first semiconductor layer (4) and the source/drain electrodes (5).Type: GrantFiled: July 9, 2003Date of Patent: October 19, 2004Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Donghang Yan, Jian Zhang, Jun Wang, Haibo Wang, Xuanjun Yan
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Patent number: 6800774Abstract: The present invention provides a polynuclear &agr;-diimine Ni(II) complex used as the precursor of the catalyst in polymerizing polyolefine, represented by the following formula: wherein M is Ni; X is Cl or Br; m and n is independently an integer from 0 to 100, respectively; R1 and R2 is the same or different, and is selected from the group consisting of H, methyl, ethyl, isopropyl and tert-butyl; Y is CR3R4, wherein R3 and R4 is the same or different, and is selected from the group consisting of H, methyl, ethyl, propyl, butyl and phenyl, or R3 and R4 forming a cyclic alkyl group; R5 and R6 is the same or different, and is selected from the group consisting of methyl, ethyl, propyl and heterocyclic group; Q is a cyclic divalent residual group of the following formula or a mixture thereof: The compound of this invention can be used to catalyze the polymerization of ethylene and to prepare high molecular weight branched polyethylene.Type: GrantFiled: May 10, 2001Date of Patent: October 5, 2004Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Yuesheng Li, Jingyu Liu, Ke Dai, Yi Zheng
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Publication number: 20040155239Abstract: A field effect transistor in sandwiched configuration having organic semiconductor, comprising: a substrate (1), a gate electrode (2) formed on the surface of the substrate (1), a gate insulation layer (3) formed on the substrate (1) and the gate insulation layer (2), which is characterized in that, further comprising: an active layer (4) formed on the gate insulation layer (3) but leaving a part of the gate insulation layer (3) to be exposed, a source and drain electrodes (5) formed on a part of the gate insulation layer (3) and a part of the active layer (4), and an active layer (6) formed on the exposed part of the gate insulation layer (3), the active layer (4), the source electrode and the drain electrode (5).Type: ApplicationFiled: August 21, 2003Publication date: August 12, 2004Applicant: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Donghang Yan, Jun Wang, Jian Zhang
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Publication number: 20040150050Abstract: A organic semiconductor field effect transistor that can work in the depletion mode or super-inverse mode, comprising: a substrate (1), a gate electrode (2) formed on the substrate (1), a gate insulation layer (3) formed on the substrate (1) and the gate electrode (2), a first semiconductor layer (4) formed on the gate insulation layer (3), a source electrode and a drain electrode (5) formed on the first semiconductor layer (4), and a second semiconductor layer (6) formed on the first semiconductor layer (4) and the source/drain electrodes (5).Type: ApplicationFiled: July 9, 2003Publication date: August 5, 2004Applicant: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Donghang Yan, Jian Zhang, Jun Wang, Haibo Wang, Xuanjun Yan
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Patent number: 6740288Abstract: The present invention relates to a process for preparing a powdered tungsten-aluminum alloy, in which the powdered tungsten and aluminum as starting materials is mechanical alloyed at normal temperature to provide the tungsten-aluminum alloy. The process of this present invention is simple and easy and the device used is simple to handle. The process is carried out at room temperature, and is suitable for preparing an alloy of metals wherein there is large disparity between melting points and densities of the metals, which alloy could not be prepared by the known smelting process.Type: GrantFiled: June 17, 2002Date of Patent: May 25, 2004Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Xianfeng Ma, Xuewei Yan, Wei Zhao, Shixue Wu
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Patent number: 6649713Abstract: The present invention relates to a process for preparation of polyolefin/inorganic component nanocomposite by in-situ polymerization, in which, a clay is first organically modified and then silica or titanium dioxide nanometer particles are incorporated into the layers of crystal sheets of the clay by sol-gel method. And a metallocene catalyst is then loaded on the above-mentioned material and a finished catalyst is obtained. The said catalyst is used for in-situ polymerization of ethylene or propylene, and polyolefin/clay nanocomposite is finally obtained. The process for preparation of the catalyst according to the present invention is simple, and the mechanical properties of the nanocomposite are high. For example, the Young's modulus and the tensile strength thereof are in the ranges of 700-2600 Mpa, and 20-55 MPa respectively.Type: GrantFiled: April 24, 2002Date of Patent: November 18, 2003Assignee: Changchun Institute of Applied Chemistry Chinese Academy of ScienceInventors: Tao Tang, Liangming Wei, Baolong Huang
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Patent number: 6613711Abstract: The present invention provides a clay-titanium tetrachloride catalyst used for the preparation of polyolefine/clay composite materials, comprising: 1) a phyllosilicate; 2) a magnesium compound selected from the group consisting of MgCl2, Mg(OR)2 and MgR2, wherein R is an alkyl group having 1-8 carbon atoms; 3) an aliphatic alcohol which is capable of dissolving the magnesium compound; 4) titanium tetrachloride TiCl4; and optionally 5) an electron-donor reagent selected from the group consisting of an aromatic ester and an aromatic group substituted or cycloalkyl group substituted alkoxy silane. The present invention also provide a method for the prepare of the catalyst. The nanocomposite materials obtained by using the catalyst have tensile strength of 32-50 MPa and Vicat temperature of 131-220° C.Type: GrantFiled: January 31, 2002Date of Patent: September 2, 2003Assignee: Changchun Institute of Applied Chemistry, Chinese Academy of SciencesInventors: Xuequan Zhang, Feng Yang, Haichao Zhao