CAS: 1889-67-4; (2,3-Dimethylbutane-2,3-Diyl)Dibenzene

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专利信息

专利号:US-2003068317-A1
优先权日:2001-04-20
标题:High capacity methods for separation, purification, concentration, immobilization and synthesis of compounds and applications based thereupon
发明人：LEE WILLIAM; SAITO KYOICHI
摘要:Compositions are provided herein comprising a base material having engrafted polymer brushes. The polymer brushes further comprise one or more functional groups immobilized along the surface of the brushes in a plurality of layers, which confer functional properties to the base material compositions. Methods of using these compositions include deoxygenation of a sample solution, hydrolysis of denaturing agents in a sample solution, resolution of racemic mixtures in a sample solution, and purification, and concentration of target compounds.

专利号:US-7601774-B2
优先权日:2004-07-19
标题:Synthesis of aromatic polyhalogenated halomethyl compounds
发明人：KORNBERG NURIT; ADDA MICHAEL; PELED MICHAEL
权利人:BROMINE COMPOUNDS LTD
摘要:The present invention discloses a process for the preparation of highly pure pentabromobenzyl bromide, PBB-Br, wherein the benzylic bromination reaction is carried out in a suitable organic solvent in the presence of water and wherein the reaction temperature is such that it is sufficient to activate the initiator but not high enough to consume a substantial amount thereof.

专利号:US-2008070274-A1
优先权日:2001-12-10
标 题 :High capacity, methods for separation, purification, concentration, immobilization and synthesis of compounds and applications based thereupon
发明人：LEE WILLIAM; SAITO KYOICHI
权利人:LEE WILLIAM; SAITO KYOICHI
摘要:Compositions are provided herein comprising a base material having engrafted polymer brushes. The polymer brushes further comprise one or more functional groups immobilized along the surface of the brushes in a plurality of layers, which confer functional properties to the base material compositions. Methods of using these compositions include deoxygenation of a sample solution, hydrolysis of denaturing agents in a sample solution, resolution of racemic mixtures in a sample solution, and purification, and concentration of target compounds.

专利号:US-8557596-B2
优先权日:2007-07-18
标题:Fluorescence detection of nitrogen-containing explosives and blue organic LED
发明人：TROGLER WILLIAM C; SANCHEZ JASON
权利人:TROGLER WILLIAM C; SANCHEZ JASON; UNIV CALIFORNIA
摘要:The invention provides a sensor for detecting nitrogen containing high explosives. The sensor includes a substrate and a blue-photoluminescent metallofluorene copolymer to be carried on said substrate during testing for nitrogen containing high explosives. The copolymer is preferably a blue-photoluminescent metallofluorene copolymer, and preferably is a vinyl bridged silafluorene copolymer. A method for detecting nitrogen containing high explosives involves exposing a copolymer to an analyte, preferably by spraying the copolymer or otherwise coating the substrate after it has been exposed to analyte and then exciting the copolymer to luminesce. The copolymer is observed for fluorescence quenching, which can be through human or electronic observation. The invention also provides for synthesis of a vinyl bridged silafluorene polymer by providing diethynylmetallofluorene and dihydrosilafluorene as precursors and conducting catalytic hydrosilation of the precursors. In a blue emitting organic light emitting diode of the invention, an emitting layer is blue-photoluminescent metallofluorene copolymer.

专利号:US-5395885-A
优先权日:1993-12-17
标题:Multi-arm cationic star-polymers
发明人：KENNEDY JOSEPH P; MARSALKO TIMEA M; MAJOROS ISTVAN J
权利人:UNIV AKRON
摘要:The first synthesis of a multi-arm radial-star polyisobutylene is described. The synthesis occurred by the addition of excess divinylbenzene (DVB) linking reagent to a living polyisobutylene (PIB(+)), charge, i.e., by the 'arm first' method under specific conditions. The radial structure of the star-PIB was proven by determining the molecular weight of a sample by light scattering, then selectively destroying the aromatic polydivinylbenzene core, and finally determining the molecular weight of the surviving aliphatic PIB arms. The synthesis strategy, kinetic observations during synthesis, and procedures leading to a representative star-PIB are described. This product whose &upbar& Mw=1,134,400 g/mole with &upbar& Mw/ &upbar& Mn=2.83, contained DIFFERENCE 90.3 mole % ( DIFFERENCE 78 wt. %) PIB arms and DIFFERENCE 9.7 mole % ( DIFFERENCE 22 wt. %) aromatic core; thus the number of PIB arms emanating from the core was &upbar& Nn, arm=56 or &upbar& Nw, arm (weight average number of arms)=110.

专利号:US-8124693-B2
优先权日:2002-04-04
标 题 :Polyisobutylene-based block anionomers and cationomers and synthesis thereof
发明人：KENNEDY JOSEPH P; FANG ZHENG
权利人:KENNEDY JOSEPH P; FANG ZHENG; UNIV AKRON
摘要:Various novel block cationomers comprising polyisobutylene (PIB) and poly(2-dimethylamino)ethyl methacrylate) (PDMAEMA) segments have been synthesized and characterized. The specific targets were various molecular weight diblocks (PDMAEMA + ) and triblocks (PDMAEMA + -b-PIB-b-PDMAEMA + ) with the PIB blocks in the DP n =50-200 (M n =3,000-9,000 g/mol) range connected to blocks of PDMAEMA + cations in the DP n =5-20 range. The overall synthetic strategy for the preparation of these block cationomers comprised four steps: 1) Synthesis by living cationic polymerization of mono- and di-allyltelechelic polyisobutylenes, 2) End group transformation to obtain PIBs fitted with termini capable of mediating the atom transfer radical polymerization (ATRP) of DMAEMA, 3) ATRP of DMAEMA and 4) Quaternization of PDMAEMA to PDMAEMA + I − by CH 3 I. Kinetic and model experiments provided guidance to develop convenient synthesis methods. The microarchitecture of PIB-PDMAEMA di- and triblock and the corresponding block cationomers were confirmed by 1 H NMR and FTIR spectroscopy and solubility studies.