9 results about "Compound (substance)" patented technology

The invention provides a chemical restoration method for treating heavy metal-polluted terrain soil by ferromagnetic artificial nucleuses. In a ferromagnetic artificial nucleus soil restoration method, the ferromagnetic artificial nucleuses are applied to heavy metal-polluted soil; soil above a heavy metal pollution depth is overturned by cultivation equipment to uniformly mix with the ferromagnetic artificial nucleuses; and after heavy metal can be dispersed from the soil to the artificial nucleuses by a period of time, the soil containing the artificial nucleuses is overturned by using the cultivation equipment to increase the change of the artificial nucleuses contacting with other soil. After the soil overturning procedure is repeated by multiple times, the cultivation equipment provided with magnets can be used for separating the ferromagnetic artificial nucleuses, absorbed with the heavy metal, from the polluted soil; and the content of the heavy metal of the polluted soil is reduced due to shifting-out of the ferromagnetic artificial nucleuses, so that the purpose of soil restoration is gradually achieved.

Provided is a curing reactive organopolysiloxane composition that forms a pressure-sensitive adhesive layer having excellent curing properties, a wide range of designable viscoelastic properties such as storage elastic modulus (G′) and the like, and practically sufficient pressure-sensitive adhesive strength and tensile adhesive strength. The organopolysiloxane composition comprises: (A) an organopolysiloxane having an alkenyl group; (B) an organopolysiloxane resin with 9 mol % or less of hydroxyl groups or the like relative to all silicon atoms in a molecule or resin mixture thereof; (C) an organohydrogenpolysiloxane; (D) an organic silicon compound having an alkenyl group; and (E) a hydrosilylation reaction catalyst. A ratio (molar ratio) of the substance amount of SiH groups in component (C) relative to the sum of alkenyl groups in components (A), (B) and (D) is 1.0 or more.

A process for producing a polymorphic or pseudo-polymorphic crystalline phase from a plurality of compounds (C,D,S1,S2), comprising the steps of preparing (I) a supersaturated solution from said compounds, homogenizing (II) said supersaturated solution in an ultrasonic bath, transferring (III) the supersaturated solution into a plurality of heated tubes (54), aging (V) the solutions transferred into the tubes for a determined period, exposing said tubes (54) to a pulsed and polarized laser beam before and / or during exposure, monitoring in situ the nucleation and then the growth of co-crystals inside said tubes (54), and filtering the exposed solutions to recover co-crystals larger than a predetermined minimum size.This process is implemented to carry out co-crystallization from at least one active substance (D) and one co-former (C) in at least one first solvent (S1) and one second solvent (S2), and it further comprises two preliminary steps: establishing a phase diagram from the respective physicochemical characteristics of said active substance (D), said co-former (C), said first solvent (S1) and said second solvent (S2), and then determining, from said phase diagram thus established, concentration, temperature and exposure conditions providing a stable phase for the production of co-crystals. See Figure 4.

The present invention belongs to the technical field of materials, and provides an anti-fingerprint agent, and a preparation method therefor and the use thereof. The anti-fingerprint agent is prepared from compounds such as trichlorotriazine, fluorine-containing aromatic diamine, methyl acrylate, and chloroalkyl siloxane and by means of reactions including substitution, addition, and polymerization. The anti-fingerprint agent has a hyperbranched three-dimensional structure, along with a C-F bond and a silane terminal group, and has excellent hydrophobic properties, anti-fouling properties, anti-fingerprint properties, abrasion-resistant properties, etc. Moreover, the anti-fingerprint agent does not contain per- or poly-fluoroalkyl substances (PFASs), which are restricted by the European Union, making it environmentally friendly. After coating, the initial water droplet angle on the surface of a substrate is 111° or above, and the water droplet angle still remains about 105° after rubbing with rubber and steel wool is performed 5000 times, such that the film has excellent anti-fingerprint and abrasion-resistant properties.

Provided is a bubble-containing hydraulic composition comprising a hydraulic powder, water, a component (A), and a component (B), wherein the average carbon number of R1a of the component (A) is 8.0-11.0, and the mass ratio [(A) / [(A)+(B)]] of the content of the component (A) to the total content of the component (A) and the component (B) is 0.35-0.90. Component (A) is a compound represented by general formula (A1): R1aOSO3M [in the formula, R1a is a C8-18 alkyl group or alkenyl group, and M is a cation] Component (B) is at least one substance selected from α-olefin sulfonates and salts thereof.

This cubic boron nitride sintered compact comprises 40-80 vol% of cubic boron nitride particles and 20-60 vol% of a binder phase. The average particle diameter d of the cubic boron nitride particles is 0.1-3 µm. The binder phase contains: at least one selected from a second group consisting of elementary substances of one element selected from a first group consisting of aluminum, group-4 elements, group-5 elements, and group-6 elements in the periodic table, alloys formed of two or more elements selected from the first group, and intermetallic compounds formed of two or more elements selected from the first group; or at least one selected from a fourth group consisting of first compounds formed of at least one element selected from the first group and at least one element selected from a third group consisting of nitrogen, carbon, boron, and oxygen, and solid solutions derived from the first compounds. In a cross section of the cubic boron nitride sintered compact, the coefficient of variation Z of area ratios of the cubic boron nitride particles is 0.25 or less. The coefficient of variation Z is obtained by: providing, in a binarized image of a backscattered electron image obtained by imaging the cross section of the cubic boron nitride sintered compact by using a scanning electron microscope at a magnification of 5000, a total of 260 unit regions each in a shape of a square in which the length of one side is two-fold of the average particle diameter d of the cubic boron nitride particles; calculating, on the basis of the total of 260 unit regions, the average of the area ratios and the standard deviation of the area ratios of the cubic boron nitride particles in each of the unit regions; and dividing the standard deviation by the average.

The application discloses a two-component furan resin binder for molding and a preparation method of foundry molding sand, wherein the binder comprises furan resin and hydrocarbon alkyl alkoxysilane; the hydrocarbon alkyl alkoxysilane comprises a compound with a structure shown in the following formula (I) and / or formula (II), the formula (I) is (OR 1 ) m1 (R 2 ) 4‑m1 Si, the formula (II) is (OR 3 ) n1 (R 4 ) 3‑ n1 Si-R 5 ‑Si(R 6 ) 3‑n2 (OR 7 ) n2 ; wherein R 1 , R 3 and R 7 are each independently selected from alkyl with 1-20 carbon atoms, R 2 , R 4 and R 6 are each independently selected from alkyl with 1-20 carbon atoms and alkenyl with 2-20 carbon atoms, R 5 is selected from alkylene with 1-20 carbon atoms and alkenylene with 2-20 carbon atoms, m1 is 1, 2, 3 or 4, and n1 and n2 are each independently 1, 2 or 3. The binder has excellent curing performance, excellent deep curing performance, and can accelerate the curing speed and reduce the emission of harmful substances. The molding sand prepared by using the binder has high tensile strength and excellent heat resistance and moisture resistance.

A method for breaking down a mixture, which is present in the form of solid particles, consisting of: (A) 0 to 99% by weight of metallic ruthenium, (B) 0 to 50% by weight of at least one element other than ruthenium, which is present in elementary form, selected from the group of elements of the atomic numbers 13, 21-30, 39-42, 45-52, and 72-83, (C) 0 to 99% by weight of ruthenium oxide, (D) 0 to 70% by weight of at least one solid element oxide other than ruthenium, (E) 0 to 30% by weight of at least one inorganic substance other than (A) to (D), and (F) 0 to 3% by weight of at least one organic substance, wherein the sum of the % by weight of the compounds (A) to (F) is 100% by weight and the ruthenium content of the mixture is 2 to 99% by weight, and wherein the method comprises the steps of: (1) optionally mixing said mixture with alkali carbonate by forming a blend, (2) alkaline oxidizing breakdown of the mixture or of the blend, respectively, formed in optional step (1) into molten potassium hydroxide using a gaseous oxidizing agent selected from the group consisting of air, oxygen, and air / oxygen mixtures, and without use of nitrate, and (3) cooling down the breakdown material formed in step (2) to a temperature below its solidification temperature, wherein the gaseous oxidizing agent is introduced into the melt in step (2).

The invention discloses a novel thermoelectric material based on N-type Bi2SbSe3 polycrystal and a preparation method thereof, and belongs to the technical field of thermoelectric material preparation, and the preparation method comprises the following steps: (1) weighing raw materials Bi elementary substance, Sb elementary substance and Se elementary substance, ensuring that the molar ratio of Bi to Sb to Se is 1: 1: 3, and mixing the raw materials after weighing; (2) carrying out high-temperature melting synthesis reaction on the raw materials mixed in the step (1); (3) grinding the BiSbSe3 compound obtained after the reaction in the step (2) is completed, then weighing the BiSbSe3 compound and the Bi elementary substance again to ensure that the molar ratio of BiSbSe3 to Bi is 1: 1, and mixing after weighing to obtain a mixed material; (4) carrying out solid-phase reaction on the mixed material in the step (3) to obtain Bi2SbSe3 polycrystals; and (5) sintering the obtained Bi2SbSe3 polycrystal for multiple times by using a discharge plasma sintering furnace to obtain a Bi2SbSe3 polycrystal block. According to the invention, the problems of large carrier effective mass and low mobility caused by disordered atoms of the Bi2SbSe3 thermoelectric material synthesized by melting are solved.