CAS: 120144-90-3; Methylaluminoxane

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    专利信息


    专利号:US-6479685-B2
    优先权日:1998-01-09
    标题 :Metallocene catalysts for synthesis of high-melting polyolefin copolymer elastomers
    发明人：WAYMOUTH ROBERT M; KRAVCHENKO RAISA L; MACIEJEWSKI PETOFF JENNIFER; HUNG JOYCE
    权利人:TRUSTEES OF THE LELAND STANDAR
    摘要:Metallocene catalysts having plural coordination geometries for synthesis of high melting polyolefin copolymers suitable as thermoplastic elastomers. The inventive catalysts comprise unbridged, substituted or unsubstituted cyclopentadienyl metallocene catalysts that are capable of inter-converting between states with different polymerization or copolymerization characteristics, which interconversion is controlled by selecting the substituents of the cyclopentadienyl ligands so that the rate of interconversion of the two states is within several orders of magnitude of the rate of formation of a single polymer chain. Where r i >r f the polymer can be characterized as multiblock; where r i
    专利号:US-9127096-B2
    优先权日:2010-10-18
    标 题:Methods and systems for synthesis of an ultra high molecular weight polymer
    发明人：KORNFIELD JULIA A; AILIANOU ARTEMIS; RONCA SARA; RASTOGI SANJAY; FORTE GIUSEPPE
    权利人:KORNFIELD JULIA A; AILIANOU ARTEMIS; RONCA SARA; RASTOGI SANJAY; FORTE GIUSEPPE; CALIFORNIA INST OF TECHN; UNIV LOUGHBOROUGH
    摘要:A method for controlling the physical state of an ultra-high molecular weight polymer to make the ultra-high molecular weight polymer suitable for further processing, and related polymers compositions methods and systems, wherein the method comprises combining a catalyst, monomers, and an additive, for a time and under condition to allow synthesis of a nascent polymer and co-crystallization of the nascent polymer with the additive.

    专利号:US-2008086013-A1
    优先权日:2006-06-15
    标 题:Carbometallation of alkynes and improved synthesis of uniquinones
    发明人：LIPSHUTZ BRUCE H
    权利人:UNIV CALIFORNIA
    摘要:Methods for the carbometallation of alkynes are presented. Those are useful for the synthesis of CoQ 10 and other ubiquinones as well as for the synthesis of ubiquinol analogs.

    专利号:US-4960878-A
    优先权日:1988-12-02
    标题:Synthesis of methylaluminoxanes
    发明人：CRAPO CLARK C; MALPASS DENNIS B
    权利人:TEXAS ALKYLS INC
    摘要:Methylaluminoxane can be formed by the reaction of a tetraalkyldialuminoxane containing C 2 or higher alkyl groups with trimethylaluminum with the trimethylaluminum being present in an amount which is not present in stoichiometric excess. Another embodiment of the present invention involves the synthesis of the methylaluminoxane by reaction of a trialkylaluminum compound or a tetraalkyldialuminoxane containing C 2 or higher alkyl groups with water to form a polyalkylaluminoxane which is then reacted with trimethylaluminum. A third embodiment of the present invention involves the synthesis of the methylaluminoxane by reaction of the aforementioned polyalkylaluminoxane with trimethylaluminum and then with water.

    专利号:US-2007260076-A1
    优先权日:2003-12-05
    标 题:Practical, Cost-Effective Synthesis of Ubiquinones
    发明人：LIPSHUTZ BRUCE H; BERL VOLKER; SHEIN KARIN; WETTERICH FRANK
    权利人:LIPSHUTZ BRUCE H; BERL VOLKER; SHEIN KARIN; WETTERICH FRANK
    摘要:The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention. The invention further provides an improved method for the carboalumination of alkyne substrates.

    专利号:US-2006167289-A1
    优先权日:2003-12-05
    标题 :Practical, cost-effective synthesis of ubiquinones
    发明人：LIPSHUTZ BRUCE H; BERL VOLKER; SCHEIN KARIN; WETTERICH FRANK
    权利人:ZYMES LLC
    摘要:The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention. The invention further provides an improved method for the carboalumination of alkyne substrates.

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    合成参考文献


    摘要:L134: ATSDR - Agency for Toxic Substances and Disease Registry (2001). Minimal Risk Levels (MRLs) for Hazardous Substances. U.S. Public Health Service in collaboration with U.S. Environmental Protection Agency (EPA).
    摘要:L135: International Agency for Research on Cancer (2014). IARC Monographs on the Evaluation of Carcinogenic Risks to Humans.
    摘要:A235: Darbre PD: Metalloestrogens: an emerging class of inorganic xenoestrogens with potential to add to the oestrogenic burden of the human breast. J Appl Toxicol. 2006 May-Jun;26(3):191-7.
    摘要:A15468: Willhite CC, Karyakina NA, Yokel RA, Yenugadhati N, Wisniewski TM, Arnold IM, Momoli F, Krewski D: Systematic review of potential health risks posed by pharmaceutical, occupational and consumer exposures to metallic and nanoscale aluminum, aluminum oxides, aluminum hydroxide and its soluble salts. Crit Rev Toxicol. 2014 Oct;44 Suppl 4:1-80. doi: 10.3109/10408444.2014.934439.
    摘要:L740: Wikipedia. Aluminium. Last Updated 16 June 2009. http://en.wikipedia.org/wiki/Aluminum
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