Abstract:
A nonaqueous electrolyte having maleimide additives and rechargeable cells employing the same are provided. The nonaqueous electrolyte having maleimide additives comprises an alkali metal electrolyte, a nonaqueous solvent, and maleimide additives. Specifically, the maleimide additives comprise maleimide monomer, bismaleimide monomer, bismaleimide oligomer, or mixtures thereof. The maleimide additives comprise functional groups, such as a maleimide double bond, phenyl group carboxyl, or imide, enhancing the charge-discharge efficiency, safety, thermal stability, chemical stability, flame-resistance, and lifespan of the secondary cells of the invention.
Abstract:
A proton exchange membrane comprising modified hyper-branched polymer is disclosed. The proton exchange membrane includes 85-90 wt % of sulfonated tetrafluorethylene copolymer and 15-10 wt % of modified hyper-branched polymer. The modified hyper-branched polymer comprises the bismaleimide (BMI)-based hyper-branched polymer, and parts of the chain ends of the hyper-branched polymer are sulfonated by the sulfonic compound. Also, the modified hyper-branched polymer and sulfonated tetrafluorethylene copolymer are interpenetrated to form an interpenetrating polymer. Furthermore, the modification step could be performed before or after forming the interpenetrating polymer. For example, the sulfonation is proceeded after forming the interpenetrating polymer. Alternatively, the sulfonation of the hyper-branched polymer could be proceeded before the formation of the interpenetrating polymer.
Abstract:
Disclosed is a lithium battery including a silicon negative electrode, a lithium mixed metal oxide positive electrode, a separator disposed between the negative and positive electrodes to define a reservoir region, an electrolytic solution filled in the reservoir region, and a sealant structure wrapped around the silicon negative electrode, the lithium mixed metal oxide positive electrode, the separator, and the electrolytic solution. The electrolytic solution includes an organic solvent, a lithium salt, and an additive. The additive includes a maleimide compound and vinylene carbonate. The silicon negative electrode of the lithium battery employing the described electrolytic solution has higher cycle efficiency and longer operating lifespan.
Abstract:
The present invention is directed to a gel polymer electrolyte for use in rechargeable polymer secondary batteries and a precursor composition thereof. The precursor composition can be injected into an aluminum shell of a battery cell, which undergoes in-situ heating polymerization by heating and forms a gel polymer electrolyte penetrating a partition membrane therein. The precursor composition contains (meth)acrylic (acrylate) monomers and a modified bismaleimide oligomer resulting from a reaction of barbituric acid and bismaleimide.
Abstract:
A nonaqueous electrolyte having maleimide additives and rechargeable cells employing the same are provided. The nonaqueous electrolyte having maleimide additives comprises an alkali metal electrolyte, a nonaqueous solvent, and maleimide additives. Specifically, the maleimide additives comprise maleimide monomer, bismaleimide monomer, bismaleimide oligomer, or mixtures thereof. The maleimide additives comprise functional groups, such as a maleimide double bond, phenyl group carboxyl, or imide, enhancing the charge-discharge efficiency, safety, thermal stability, chemical stability, flame-resistance, and lifespan of the secondary cells of the invention.
Abstract:
The invention provides a halogen-free and thermal resistant composition, including a mixture of bismaleimide and maleimide with molar ratio of 99:1-50:50; a barbituric acid, wherein the molar ratio of the mixture and the barbituric acid is 93:7-80:20; and an epoxy resin, wherein (the mixture with the barbituric acid) and the epoxy resin have a weight ratio of 5:95 to 50:50. The mixture undergoes reaction at 110-130° C. for about 2˜7 hours to form a maleimide modified epoxy resin. The procedure of forming the composition is solvent-free, thereby providing improved integrity for electronic packaging, lower curing temperature, and a simplified process.
Abstract:
The present invention is directed to a gel polymer electrolyte for use in rechargeable polymer secondary batteries and a precursor composition thereof. The precursor composition can be injected into an aluminum shell of a battery cell, which undergoes in-situ heating polymerization by heating and forms a gel polymer electrolyte penetrating a partition membrane therein. The precursor composition contains (meth)acrylic (acrylate) monomers and a modified bismaleimide oligomer resulting from a reaction of barbituric acid and bismaleimide.
Abstract:
The present invention is to provide a method of enhancement of electrical conductivity for conductive polymer by use of field effect control, wherein on the substrate, whose surface was treated with a field, was coated by a containing monomer or oligomer solution of conductive polymer, through a field mechanism a monomer or oligomer of conductive polymer can demonstrate the sequential order molecular structure layer on the substrate, on this molecular structure layer was coated by an available amount of oxidant to proceed the polymerization, it was subjected to a field during polymerization to form 3-dimensional order stacking structure in order to increase the functional characteristic and electrical conductivity for conductive polymer.
Abstract:
The present invention provides a kind of liquid crystal aligning film composition used for liquid crystal display (LCD), in which the liquid crystal aligning film composition used for LCD is a polyimide resin oligomer (A) having the structural formula (I) as shown in the following: wherein m is an interger of 1, 2, and 3, R is selected one of from aromatic and cyclicaliphatic, X is selected from the group containing amide, ester, and ether etc., Y is the group of containing cholesterol structure; this polyimide resin oligomer (A) and the second reagent (B) are mixed together, through an induced process (C), to produce a thin film for aligning liquid crystal molecule.
Abstract:
The present invention discloses a photo-sensitive composition, used as a solder resist or a photosensitive material for insulation layers in the production of printed circuit boards. The photo-sensitive composition comprises a prepolymer containing carboxylic groups and unsaturated vinyl groups; photoinitiator; unsaturated photo-monomer; and the reaction adduct of bismaleimide derivative, barbituric acid derivative and epoxy compounds. The obtained photosensitive composition exhibits high adhesion towards PI substrates, in addition, it can be developed with alkaline water. The photosensitive composition obtained in the invention is very useful in packaging substrates, such as P-BGA, T-BGA and F-CSP due to its high heat resistance and solder resistance.