Patent classifications
C08F122/14
Polymers containing a 1,1-disubstituted alkene compound
Disclosed is a block copolymer having a first polymer block including a first primary monomer that is a 1,1-disubstituted alkene compound, wherein the first primary monomer is present at a concentration of about 50 weight percent or more, based on the total weight of the first polymer block, the first polymer block covalently bonded to a second polymer block including a second primary monomer different from the first primary monomer, wherein the second primary monomer is present at a concentration of about 50 weight percent or more, based on the total weight of the second polymer block. Also disclosed is a polymer comprising at least one monomer of a 1,1-disubstituted alkene compound having a weight average molecular weight of about 3000 daltons or more, wherein the polymer is substantially free of a melting temperature and is substantially free of a glass transition temperature of about 15 C. or more.
Polymeric monolithic capacitor
Prismatic polymer monolithic capacitor structure that includes multiple interleaving radiation-cured polymer dielectric layers and metal layers. Method for fabrication of same. The chemical composition of polymer dielectric and the electrode resistivity parameters are chosen to maximize the capacitor self-healing properties and energy density, and to assure the stability of the capacitance and dissipation factor over the operating temperature range. The termination electrode that extends beyond the active capacitor area and beyond the polymer dielectric layers has a thickness larger than that used industrially to provide resistance to thermomechanical stress. The glass transition temperature of the polymer dielectric is specifically chosen to avoid mechanical relaxation from occurring in the operating temperature range, which prevents high moisture permeation (otherwise increasing a dissipation factor and electrode corrosion) into the structure. The geometry and shape of the capacitor are appropriately controlled to minimize losses when the capacitor is exposed to pulse and alternating currents.
Polymeric monolithic capacitor
Prismatic polymer monolithic capacitor structure that includes multiple interleaving radiation-cured polymer dielectric layers and metal layers. Method for fabrication of same. The chemical composition of polymer dielectric and the electrode resistivity parameters are chosen to maximize the capacitor self-healing properties and energy density, and to assure the stability of the capacitance and dissipation factor over the operating temperature range. The termination electrode that extends beyond the active capacitor area and beyond the polymer dielectric layers has a thickness larger than that used industrially to provide resistance to thermomechanical stress. The glass transition temperature of the polymer dielectric is specifically chosen to avoid mechanical relaxation from occurring in the operating temperature range, which prevents high moisture permeation (otherwise increasing a dissipation factor and electrode corrosion) into the structure. The geometry and shape of the capacitor are appropriately controlled to minimize losses when the capacitor is exposed to pulse and alternating currents.
POLYMERS INCLUDING ONE OR MORE 1,1-DISUBSTITUTED ALKENE COMPOUNDS AND POLYMER COMPOSITIONS THEREOF
The disclosure relates to polymers including one or more 1,1-disubstitued alkene monomers. By employing a plurality of monomers and/or tailored chain structure, polymers having improved combinations of properties are achieved. The polymer may be a copolymer, preferably including two or more 1,1-disubstituted alkene monomers. The polymer may be a homopolymer having a tailored chain structure.
METHOD FOR PRODUCING (METH)ACRYLIC ACID ESTER COMPOUND
To provide a method for producing a (meth)acrylic acid ester compound, wherein the method enables the esterification at a high introduction rate and collecting the obtained ester compound efficiently. A method for producing a (meth)acrylic acid ester compound, includes reacting a polymer having a structure represented by formula (1) with (meth)acrylic acid anhydride in the presence of at least one of potassium carbonate, rubidium carbonate, and cesium carbonate. In formula (1), R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 are each independently selected from a hydrogen atom and an alkyl group, and at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 is selected from a single bond, O*, S*, S(?O)*, S(?O).sub.2*, and an alkylene group-*; and X is a hydrogen atom, at least some of which react with (meth)acrylic acid anhydride to be (meth)acrylic groups.
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Polymeric monolithic capacitor
Prismatic polymer monolithic capacitor structure operating at temperatures exceeding 140 C. and including multiple interleaving radiation-cured polymer dielectric layers and metal layers. Method for fabrication of same. The geometry of structure is judiciously chosen to increase sheet resistance of metal electrodes while reducing the capacitor's equivalent series resistance. Metal electrode layers are provided with a thickened peripheral portion to increase strength of terminating connections and are passivated to increase corrosion resistance. Materials for polymer dielectric layers are devised to ensure that the capacitor's dissipation factor remains substantially unchanged across the whole range of operating temperatures, to procure glass transition temperature that is no less than the desired operating temperature, and to optimize the absorption of ambient moisture by the polymeric layers.
Polymeric monolithic capacitor
Prismatic polymer monolithic capacitor structure operating at temperatures exceeding 140 C. and including multiple interleaving radiation-cured polymer dielectric layers and metal layers. Method for fabrication of same. The geometry of structure is judiciously chosen to increase sheet resistance of metal electrodes while reducing the capacitor's equivalent series resistance. Metal electrode layers are provided with a thickened peripheral portion to increase strength of terminating connections and are passivated to increase corrosion resistance. Materials for polymer dielectric layers are devised to ensure that the capacitor's dissipation factor remains substantially unchanged across the whole range of operating temperatures, to procure glass transition temperature that is no less than the desired operating temperature, and to optimize the absorption of ambient moisture by the polymeric layers.
PORE INDUCER AND POROUS ABRASIVE FORM MADE USING THE SAME
Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.
PORE INDUCER AND POROUS ABRASIVE FORM MADE USING THE SAME
Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.
Polymers including one or more 1,1-disubstituted alkene compounds and polymer compositions thereof
The disclosure relates to polymers including one or more 1,1-disubstituted alkene monomers. By employing a plurality of monomers and/or tailored chain structure, polymers having improved combinations of properties are achieved. The polymer may be a copolymer, preferably including two or more 1,1-disubstituted alkene monomers. The polymer may be a homopolymer having a tailored chain structure.