61 results about "Organometallic polymer" patented technology

Polymeric nanofibers have been developed which are useful in a variety of medical and other applications, such as filtration devices, medical prosthesis, scaffolds for tissue engineering, wound dressings, controlled drug delivery systems, cosmetic skin masks, and protective clothing. These can be formed of any of a variety of different polymers, either non-degradable or degradable. In a preferred embodiment demonstrated in the following examples, nanofibers are formed of biodegradable and non biodegradable polyphosphazenes, their blends with other polyphosphazenes or with organic, inorganic/organometallic polymers as well as composite nanofibers of polyphosphazenes with nanosized particles such as hydroxyapatites.

A resist removing composition has an excellent capability for removing a resist, polymer, organometallic polymer and metal oxide and which does not attack underlying layers, and a resist removing method using the same. The resist removing composition includes alkoxy N-hydroxyalkyl alkanamide, at least one selected from the group consisting of alkanolamine, a polar material having a dipole moment of 3 or greater and an attack inhibitor, and hydrogen peroxide or at least one of a fluoride-based reducing agent and a hydroxide-based reducing agent.

The present invention discloses a novel process for the fabrication of a class of conductive supported electrocatalysts based on transition metals. The electrocatalysts are formed by pyrolysis of an organometallic polymer complex precursor which is the reaction product of transition metal salts and a templating polymer. The electrocatalysts has enhanced catalytic activity, and are useful in the preparation of supercapacitor and fuel cell electrodes, auto-thermal fuel reformer catalysts, oxygen and hydrogen sensors, zinc-air battery electrode and oxidation catalysts.

The present disclosure is directed to processes, compositions and agents for inhibiting corrosion in various substrates, for example metal substrates. The present disclosure is also directed to corrosion inhibitors comprising organometallic polymers such as metal-organic frameworks (MOFs), including compositions and processes comprising MOFs for inhibiting corrosion in metal substrates.

The invention provides a composition comprising at least one dopant, and a polymer containing at least one unit selected from the structure I shown in the specification, wherein M is selected from Fe, Co, or Ni; R1, R2, R3 , R4 and R5 are independently selected from hydrogen, deuterium, halogen, substituted or unsubstituted (C1-C16) alkyl, substituted or unsubstituted (C6-C16) aryl, substituted or unsubstituted (C3-C16) cycloalkyl, substituted or unsubstituted 5- to 7-membered heterocycloalkyl group, substituted or unsubstituted (C6-C16) aryl condensed with one or more cycloalkyls; 5- to 7- membered heterocycloalkyl group condensed with one or more substituted or unsubstituted aromatic rings or (C3-C16) cycloalkyl condensed with one or more substituted or unsubstituted aromatic rings, substituted or unsubstituted (C1-C16) silyl, cyano, nitro or hydroxyl; n is greater than or equal to 1; x is 0-4; y is 0-5; the dopant is a P-type dopant. The polymers containing and free of dopants can be used to prepare films and electronic devices, such as an organic light emitting diode (OLED).

The invention relates to an organometallic polymer ceramic precursor, and a preparation method and application thereof. The organometallic polymer ceramic precursor is prepared by copolymerization of a double-bond-containing organometallic zirconium or titanium or hafnium monomer and a boron-containing monomer. By using the organometallic polymer ceramic precursor for preparing M(Zr,Ti,Hf)-B-C ceramic, the ceramic yield is up to 40-60%, and the content of the super-high-temperature-resistant component (ZrC/ZrB2,TiC/TiB2,HfC/HfB2) in the prepared ceramic material is higher than 70 wt%. When being treated at 2000 DEG C for 2 hours, the organometallic polymer ceramic precursor is not subjected to obvious weight loss, thereby having favorable high-temperature resistance.

The invention relates to the technical field of photocatalytic materials, in particular to a preparation method and application of a perylene bisimide based organometallic polymer with visible-light photocatalytic performance.The preparation method includes the steps: 1, adding transition metal salt Tm and perylene bisimide derivative H2PDI in the molar ratio of 1:1.0-1.5 into a mixed solvent of N,N-dimethylformamide and water in the volume ratio of 1:2-2.5, and regulating the solution to alkalescence with NaOH; 2, putting the reaction solution prepared in the step 1 in an oven with the temperature controlled between 90 DEG C and 110 DEG C and time controlled between 60h and 80h, closing the oven, cooling to room temperature, crystallizing out, filtering and drying to obtain the target material Zn-PDI.The catalyst is simple to synthesize and easy to operate, the catalyst and the raw materials for catalytic reaction are low in cost, yield is high, visible-light photocatalysis can be realized under mild conditions, and convenience is brought to widespread popularization and application.

An organometallic polymer material is obtained which excels in translucency, shows improved hardness after it is cured and exhibits high reliability at high temperature and high humidity.

Characteristically, the organometallic polymer material contains an organometallic polymer having an -M-O-M- bond (M indicates a metal atom), a metal alkoxide having a single hydrolyzable group and/or its hydrolysate and an organic polymer having a urethane bond and a methacryloxy or acryloxy group, and preferably further contains an organic anhydride and/or an organic acid.

The present invention relates to polymeric composites comprising inorganic fillers and organic, or organometallic, polymers. The filler compositions are used in the preparation of inorganic-organic polymeric composites, and, in particular, light curable composites. The composite fillers are used in dental applications, such as tooth restorations, for example, cavity fillings, adhesive compositions, veneers, crowns, bridges and teeth replacements. The inventive composition is a composite filler comprising porous inorganic particles having a diameter of 2-25 microns and a polymer occupying the pores of the porous inorganic particles, wherein the composite filler has a diameter of 2-25 microns.

The invention provides an optical polymer material having a low viscosity before curing, a high refractive index of a cured product, little alteration of refractive index under high temperature and high humidity, and an excellent heat resistant shock property and an optical component using the optical polymer material.

The optical polymer material is characterized in that the material contains a fluorene compound having four (meth) acryloyl groups and a (meth) acrylate having an aryl group and may further contain -M-O-M- bond (M is a metal atom), an organometallic polymer having an aryl group, a monofunctional (meth)acrylate and/or a polyfunctional (meth)acrylate.

The invention provides an organometallic polymer composite ceramic precursor and a preparation method and application thereof.The organometallic polymer composite ceramic precursor can be used to prepare Zr-Si-C-N ceramics, the yield of the ceramics is 40-60%, no evident weight loss is discovered when the ceramics are processed at 2000 DEG C for 2 hours, and the ceramics are good in high temperature resistance.The ceramics are promising in application prospect in fields such as aviation and supersonic aircrafts.

A curable organometallic composition containing an organometallic polymer having an -M-O-M- bond (M denotes a metal atom) and an aryl group, and a fluorene-based compound having an acryloyl or methacryloyl group, an organometallic polymer obtained by curing the composition and an optical component using the material.

The invention belongs to the technical field of heterogeneous catalysts, and particularly relates to a monodisperse porous organic metal polymer material and a preparation method and application thereof. The polymer is prepared by taking homogeneous double carbene iridium, palladium, gold, copper, cobalt and manganese compounds as monomers and aromatic hydrocarbon as a comonomer in a manner of adding a cross-linking agent and carrying out Friedel-Crafts alkylation under the catalysis of Lewis acid. The polymer can be used for catalyzing hydrogenation cyclization of levulinic acid to prepare gamma-valerolactone, or catalyzing oxidative dehydrogenation of polyol and derivatives thereof and carbohydrate compounds to efficiently prepare lactic acid and derivatives thereof, and dehydrogenationcoupling of alcohol compounds and amine to efficiently prepare pyrrole and derivatives thereof. The polymer material completely holds intrinsic high activity and high selectivity of a homogeneous catalyst precursor and has the characteristics of heterogeneous catalysis stability and easiness in recovery, so that biomass can be converted into various fine chemicals with high efficiency, high selectivity and a large amount; the catalyst can be recycled for multiple times and has a good industrial application prospect.

Disclosed is a multilayer optical device which is a composite optical device wherein an optical resin layer is arranged on an optical base such as a glass base. This multilayer optical device is excellent in reliability since the optical resin layer is hardly separated even under high temperature, high humidity conditions. Specifically disclosed is a multilayer optical device comprising an optical base (1) made of an optical material, an intermediate layer (2) arranged on the optical base (1), and an optical resin layer (3) arranged on the intermediate layer (2). This multilayer optical device is characterized in that the optical resin layer (3) is a resin layer made of an organic metal polymer having an -M-O-M- bond (wherein M represents a metal atom), a metal alkoxide having one hydrolyzable group and/or a hydrolysis product thereof, and an organic polymer having an urethane bond and a methacryloxy or acryloxy group. The intermediate layer (2) is a layer wherein fine particles of a metal oxide are dispersed in a matrix resin which is made of a metal alkoxide having a radically polymerizable group and a hydrolyzable group and/or a hydrolysis product thereof.

A circuit board structure and fabrication method thereof are disclosed, including: a circuit board with a circuit layer thereon; a reactant formed on the surface of the circuit layer, wherein the reactant is an organic metallic polymer having a polymer end and a metal ion end; and a dielectric layer formed above the reactant and the circuit board, thus forming a metallic bond between the metal ion end of the reactant and the circuit layer and forming a chemical bond between the polymer end of the reactant and the dielectric layer. Owing to enhanced bonding between the dielectric layer and the circuit board, electrical performance of the circuit board structure is improved, and the demand for fine circuits is met.