摘要:
2,6-dimethylphenylmaleimide is used as a comonomer for the preparation of styrene copolymers and vinyl chloride copolymers having an increased glass transition temperature and low intrinsic coloration compared with the prior art.
摘要:
A heat curable, solventless liquid prepolymer formed from an N-(R-oxymethyl) acrylamide; a rubber monomer such as isoprene, butadiene or alkyl esters of acrylic acid; and a nitrile monomer such as acrylonitrile or methacrylonitrile. The prepolymer is formed with sufficient chain transfer agent to establish a weight average molecular weight which is less than about 25,000. The prepolymer is heat curable to form a solid polymer with excellent compression set, tensile strength and fuel resistance. The method of formulating these polymers is also disclosed.
摘要:
There is disclosed block copolymers having acrylonitrile sequences and sequences of glutarimide units of a molecular weight of from about 10,000 to about 2,000,000 where the acrylonitrile sequences and sequences including glutarimide units are of a molecular weight of at least about 400 with the number of sequences being at least about 2 and preferably 5 and higher.
摘要:
There is disclosed block copolymers having acrylonitrile sequences and sequences of glutarimide units of a molecular weight of form about 10,000 to about 2,000,000 where the acrylonitrile sequences and sequences including glutarimide units are of a molecular weight of at least about 400 with the number of sequences being at least about 2 and preferably 5 and higher.
摘要:
A polymer comprising repeating units derived from a first monomer, typically acrylonitrile, and repeating units derived from a second monomer different from the first monomer, wherein the second monomer is a compound comprising an ethylenically unsaturated organic anion and an organic cation containing a C═N imine group; a process for producing carbon fibers using the said polymer; and carbon fibers made therefrom, are described herein.
摘要:
A binder composition for the electrode of a non-aqueous lithium ion secondary battery, which is unlikely to swell with respect to an electrolyte solution and can easily increase the electrode density of the electrode for a non-aqueous lithium ion secondary battery, includes a polymer, the polymer includes an acrylonitrile unit and an α,β-ethylenically unsaturated nitrile monomer unit in which at least one or more types of hydrogen at the α position has been substituted, and the polymer has a crystallite size of 2.5 nm or more and 7.0 nm or less, which is determined from the peak within the range of 2θ=14° to 18° in X-ray structure diffraction and the half width of this peak.
摘要:
Provided is a new technique that can sufficiently inhibit heat generation in the event of an internal short circuit of an electrochemical device while also reducing IV resistance at low temperature and improving high-temperature storage characteristics of the electrochemical device. A binder composition for an electrochemical device contains a binder and a thermally decomposable material. The thermally decomposable material includes a foaming agent. The thermally decomposable material has a thermal decomposition temperature of 150° C. to 400° C., a number-average particle diameter of 0.01 μm to 10 μm, a ratio of the number-average particle diameter relative to volume-average particle diameter of 0.05 to 1, and a circularity of 0.05 to 0.95.
摘要:
Provided is an aqueous binder composition for a secondary battery electrode, comprising a copolymer and a dispersion medium, wherein the copolymer comprises a structural unit (a) derived from a carboxylic acid group-containing monomer, a structural unit (b) derived from an amide group-containing monomer, a structural unit (c) derived from a nitrile group-containing monomer, and at least one anionic reactive emulsifier, with an improved binding capability. In addition, battery cells comprising the cathode prepared using the binder composition disclosed herein exhibits exceptional electrochemical performance.
摘要:
An integrated and improved, single-step, process for the production of a carbon fiber precursor is described, specifically a process which starts from the comonomers and reaches the spinning step, obtaining the final precursor fiber.
摘要:
Free-standing non-fouling polymers and polymeric compositions, monomers and macromonomers for making the polymers and polymeric compositions, objects made from the polymers and polymeric compositions, and methods for making and using the polymers and polymeric compositions.