摘要:
The present application is directed to methods for solvent-free preparation of polymers and their subsequent processing into activated carbon materials. These methods unexpectedly demonstrate ability to tune pore structure in the polymer gel and carbon produced there from, while also providing distinct advantages over the current art.
摘要:
One aspect of the present invention provides a polymer having silphenylene and siloxane repeating units represented by the formulas (1-1), (1-2) and (1-3) and weight-average molecular weight of from 3,000 to 500,000, as determined by GPC using tetrahydrofuran as a solvent, reduced to polystyrene. Another aspect of the present invention provides an adhesive composition comprising (A) the polymer, (B) a thermosetting resin, and (C) a compound having flux activity. Further, the present invention provides an adhesive sheet having an adhesive layer made of the adhesive composition, a protective material for a semiconductor device, which has the adhesive layer, and a semiconductor device having a cured product obtained from the adhesive composition.
摘要:
One aspect of the present invention provides a polymer having silphenylene and siloxane repeating units represented by the formulas (1-1), (1-2) and (1-3) and weight-average molecular weight of from 3,000 to 500,000, as determined by GPC using tetrahydrofuran as a solvent, reduced to polystyrene. Another aspect of the present invention provides an adhesive composition comprising (A) the polymer, (B) a thermosetting resin, and (C) a compound having flux activity. Further, the present invention provides an adhesive sheet having an adhesive layer made of the adhesive composition, a protective material for a semiconductor device, which has the adhesive layer, and a semiconductor device having a cured product obtained from the adhesive composition.
摘要:
There is provided a novel gate insulating film forming meterial in consideration of not only initial electric properties immediately after the production of a gate insulating film, but also electric properties after other steps are performed while producing a thin-film transistor using the gate insulating film, and even reliability in the electric properties of the produced element. A gate insulating film forming agent for a thin-film transistor comprising an oligomer compound or a polymer compound, both of which contain a repeating unit having a triazinetrione ring containing a hydroxyalkyl-containing group as a substituent on a nitrogen atom, and a solvent; a gate insulating film produced from the gate insulating film forming agent; a thin-film transistor having the gate insulating film; and a method for producing the gate insulating film or thin-film transistor.
摘要:
Novel hybrid monomers contaning both the aryltrifluorovyinyloxyether-group (TFVE-group) and the cyanato-group, their synthesis, and the synthesis of homo- and co-polymers made from these new hybridmonomers are disclosed. The said monomers are preferably of formula (III):
wherein R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 can independently be selected from among a broad variety of substituents, R 11 is a single bond or is an alkylene group, R 13 and R 14 are both preferably F, and R 11 , R 15 and R 16 can be either F or H, Y and z are independent from each other and each Y and/or z can independently (in case q and/or n are more than 1) be selected from a chemical bond, SO 2 , CF 2 , CH 2 , CHF, CH(CH 3 ) 2 , isopropylene, hexafluoroisopropylene, n- or iso-C 1 -C 18 alkylene which may be partly or fully fluorinated, 0, NR 19 , N=N, CH=CH, -(C=O)-O-, -O-(C=O)-, CH=N, -C≡C-, CHN-N=CH, alkyloxyalkylene having 1 to 18 carbon atoms which is optionally partly or fully fluorinated, S, Si(CH 3 ) 2 or
wherein R 19 is hydrogen or C 1 -C 18 alkyl, Q has the same meaning as Y, m is 0 or 1, n is 0, or an integer between 1 and 6, o is 0 or an integer between 1 and 12, p is 0 or 1, and q is 0 or an integer between 1 and 6.
摘要:
Provided is a polymeric fluorescent substance showing fluorescence in solid state, which has a specific carrier drift mobility, a specific repeating unit, and specific number-average molecular weight. The polymeric fluorescent substance is excellent in solubility to organic solvents, and has higher efficiency and longer lifetime in applying as a polymer LED.
摘要:
Cette invention concerne des macromonomères à tiges rigides et des procédés permettant de préparer ces macromonomères, lesquels comprennent un squelette polyaromatique, des groupes latéraux de solubilisation et des groupes terminaux réactifs. On incorpore chimiquement les macromonomères dans des systèmes polymères pour produire des polymères plus solides et plus rigides.
摘要:
A superabrasive composition for grinding applications comprising a superabrasive material, a bismaleimide- triazine addition copolymer resin which as a cured polymer exhibits (i) a glass transition temperature (Tg) of at least about 280°C. and (ii) a long term thermal resistance of at least about 180°C., a free radical generating initiator, and preferably a catalyst. The superabrasive abrasive composition is particularly useful as a cutting/grinding edge in a high performance cutting/grinding wheel.