24 results about "Structural unit" patented technology

The present invention relates to an aqueous reinforced rubber dispersion comprising: a) 51 to 90 wt-% of base latex polymer particles; and b) 10 to 49 wt-% of reinforcing latex polymer particles comprising structural units of aromatic vinyl monomers and conjugated diene monomers, the reinforcing latex polymer particles having a single glass transition temperature (Tg) from −25° C. to 28° C. as measured by differential scanning calorimetry (DSC), whereby the weight percentages are based on the total weight of polymer particles in the rubber dispersion and the base latex polymer particles have a Tg as measured by DSC that is lower than the Tg of the reinforcing latex particles, to the use of the rubber dispersion for making latex foam, to a method for making latex foam and to an article comprising the latex foam obtained from the rubber dispersion of the present invention.

A non-photosensitive resin composition including: a self-cross-linkable copolymer having structural units of Formulae (1) and (2):

wherein each R⁰ is independently a hydrogen atom or methyl group; X is an —O— group or an —NH— group; R¹ is a single bond or a C_1-6 alkylene group; R² is a C_1-6 alkyl group; a is an integer of 1 to 5, b is an integer of 0 to 4, and when a and b satisfy 1≦a+b≦5, and b is 2, 3, or 4, such R² optionally differ from each other; R³ is a divalent organic group of Formula(I), Formula (II), or Formula (III), and R⁴ is an organic group having an epoxy group:

wherein c is an integer of 0 to 3, d is an integer of 1 to 3, and each e is independently an integer of 2 to 6; and a solvent.

A charging member is provided that has high charging ability and can prevent generation of abnormal discharge even under an environment at a low temperature and a low humidity. The charging member includes an electroconductive support, an electroconductive elastic layer and a surface layer. The electroconductive elastic layer contains electrically insulating domains such that at least a part of the electrically insulating domains is exposed on the surface of the electroconductive elastic layer. The surface layer contains a polymetalloxane having a structure represented by Structural Formula (a1), and M1 in Structural Formula (a1) and a carbon atom in a structural unit represented by Structural Formula (a2) are bonded through a linking group represented by Structural Formula (a3).

The invention relates to the technical field of fire retardants and especially relates to a phosphorus-containing fire retardant and a preparation method thereof. The phosphorus-containing fire retardant has molten droplet-resistant effects. The phosphorus-containing fire retardant aims at solving the problem that the existing fire retardant has low heat stability, compatibility and fire-retardant efficiency so that a polymer material added with the existing fire retardant produces molten droplets in burning. The phosphorus-containing fire retardant is a phosphoryl hydroquinone-carbonic estercopolymer having a general structural formula shown in the patent specification, wherein R1 and R2 represent alkyl groups; the number of alkyl carbon atoms is in a range of 1 to 8; m, o and p represent the numbers of corresponding structural units of the copolymer; and (m+p): o is equal to 1: 1 and p: m is equal to (0.2 to 3.5): 1. The phosphorus-containing fire retardant has high heat stability and fire resistance and good compatibility with materials. The preparation method has simple processes and can be operated easily. A polymer material added with the phosphorus-containing fire retardant has good heat stability, fire resistance and mechanical properties and does not produce molten droplets in burning.

The invention provides a monolithic porous catalytic stirring paddle and a preparation method thereof. The monolithic porous catalytic stirring paddle is formed by adopting a 3D printing technology and comprises a paddle shaft and paddle blades, wherein the surface of each paddle blade is loaded with a catalyst layer; and in a stirring paddle structure model for 3D printing, a skeleton structure of the paddle blades is formed by filling of repeated structure units. The monolithic porous catalytic stirring paddle prepared by the preparation method has the advantages of high structural precision, high mechanical strength and the like, can be used for high-temperature and high-pressure reaction under harsh reaction conditions, and is relatively wide in application field.

A polysiloxane includes a structural unit in which a functional group represented by a general formula of

(in the formula, each of R¹, R², and R³ is independently an alkyl group with a carbon number of 1 or more and 6 or less and m is an integer of 2 or more and 6 or less), an ester bond or an amide bond, a spacer, and a silicon atom are bonded sequentially.

The invention relates to a graphic processing device and method, particularly to a system and method for converting a visio graph into a VG graph. The system comprises a visio element set, a VG-Lib element set, an original drawing, a storage cell, an error processing unit, a data processing unit, a structural unit, a detection unit, a controller, a display platform, a Com unit, a branch file storage and a database storage, wherein the visio element set and the original drawing are connected with the controller through the structural unit; the VG-Lib element set and the output end of the Com unit are connected to the controller respectively; the controller is connected onto the display platform. The system and method for converting the visio graph into the VG graph have the following advantages: 1) in the converted VG graph, the corresponding position relation between a graphic element and a text element fits the original visio graph; 2) the system is concise and convenient and is high in conversion speed.

The invention provides a low-cost new method for synthesizing a N-vinyl azole compound from a n azole compound and a propargyl tertiary sulfur salt compound under the promotion of a common inorganic base. According to the invention, the synthesized N-vinyl azole compound is an important structural unit of medicines, semiconductors and photosensitive materials, so that the synthesis method providedby the invention has very important commercial value.

The low-smoke low-heat-release intrinsic flame-retardant polycarbonate is composed of structural units represented by I, II and III, the structural unit of II accounts for 1-99% of the mole number of the structural unit of [I], and [III] accounts for 0.5-20 wt% of the mass of [I + II]; the number-average molecular weight of the copolycarbonate is 12000-20000, the limit oxygen index of the copolycarbonate is 30.0-55.0%, and the vertical combustion grade of the copolycarbonate is V-0 grade; in the cone calorimetry test process, the peak heat release rate is 40%-90% lower than that of pure PC, and the total smoke release amount is 10%-90% lower than that of pure PC. The invention further discloses a preparation method of the copolycarbonate, the copolycarbonate has a good smoke heat release inhibiting effect and high char forming property, molten drops can be effectively inhibited, smoke heat release can be effectively reduced, the preparation process is environmentally friendly, and the obtained polymer has good injection molding processability, can be subjected to industrial production and is suitable for industrial production. And the flame retardant can also be used as a macromolecular flame retardant to be added into a polymer to realize flame retardance.

The invention relates to a coordination-polymer magnetic material based on in-situ ligand reaction. The magnetic material adopts [Co(bmpth)](bpy)0.5 as a structure unit to form a three-dimensional network structure by Co-N bonds and Co-O bonds, protonated 4,4'-dipyridine is uniformly distributed in porous channels as guest molecules, the chemical formula is [Co(bmpth)](bpy)0.5, wherein bmpth represents benzimidazole dihydrazide ligand, and bpy represents protonated 4,4'-dipyridine. Simultaneously, the invention also discloses a preparation method of the magnetic material. The magnetic materialis good in stability.

The invention relates to the field of functional polyimide materials, and particularly discloses a liquid crystal orientation agent and application thereof. The liquid crystal orientation agent comprises polyimide, wherein a repeating structural unit of polyimide is shown as a general formula (I) in the description. The preparation method of polyimide comprises the steps of prepolymerization, ring formation, spinning, washing and the like. The liquid crystal orientation agent can be used for preparing a liquid crystal orientation film and a liquid crystal element, and the prepared liquid crystal element has the characteristics of high voltage retention rate under high-temperature work and low charge accumulation under long-time work.

The invention relates to the technical field of concrete admixtures, in particular to an esterification product for preparing a water reducing agent, a preparation method of the esterification product, a high-workability polycarboxylic acid water reducing agent and a preparation method of the high-workability polycarboxylic acid water reducing agent, and the esterification product for preparing the water reducing agent is excessive unsaturated carboxylic acid and/or unsaturated carboxylic acid anhydride. According to the esterification product for preparing the water reducing agent, the main chain of the polycarboxylic acid water reducing agent is provided with phenoxyethanol and/or phenoxyisopropanol, fumarate and maleate structural units, the polycarboxylic acid water reducing agent with corrosion resistance is obtained, and the corrosion resistance of the polycarboxylic acid water reducing agent is improved. The polycarboxylate superplasticizer prepared by the preparation method does not need to be compounded with a small-molecular preservative, so that the problem of uneven distribution caused by poor compatibility of the preservative and the polycarboxylate superplasticizer does not exist, and the final product is a stable macromolecular structure, so that the polycarboxylate superplasticizer can tolerate high temperature higher than 50 DEG C, and the high-temperature corrosion resistance is more excellent.

The invention relates to an adapter for mounting overvoltage protection devices designed as plug-in modules (3) on a circuit board in a terminal device, wherein the adapter comprises a socket (1) with means for electrically connecting the convertible plug-in module (3) received in the respective socket (1) to the application circuit of the terminal device, and has at least one chamber (2) open at the top and delimited by side walls (20; 21). At least one assembly and adjustment extension (4), having a cross-sectional shape that is substantially complementary to an opening in the circuit board of the terminal device, extends from the underside (23) of the chamber. Electrical connection parts (6) inside the chamber area that can be occupied by the plug-in module (3), allowing a direct electrical connection to the circuit board, are additionally led through the underside (23), wherein the electrical connection parts (6) form an assembly with internal contacts (5) for the respective plug-in module (3).

The invention discloses a preparation method of a catalyst carrier for low-cloud-point base oil, and the preparation process of the catalyst carrier comprises two main steps: preparation of a molecular sieve fragment structure unit and preparation of the catalyst carrier. The preparation method comprises the following steps: preparing a solution from a turbid solution containing molecular sieve fragment structure units, an auxiliary agent and deionized water, dropwise adding the solution into powder formed by a ten-membered ring structure molecular sieve and an amorphous inorganic porous material, forming, homogenizing, drying and roasting to obtain the catalyst carrier. The base oil produced by the catalyst carrier prepared by the invention has the advantages of high viscosity index, less viscosity index loss, low pour point, low cloud point and high total yield, and has good application prospects.

A liganded substrate having at least part of the surface thereof covered by a polymer (P1) containing a structural unit represented by formula (1a) and (1b), a raw material of said liganded substrate,and a production method thereof are provided. (In the formula, R1, R2, X, Y, L, Q1, Q2, Q3, m1, m2 and n are as set forth in the claims and description.