1466 results about "Straight chain" patented technology

The invention discloses a silica gel material and a preparation method thereof, a silica gel tube, an implant and a preparation method and application thereof. The silica gel material comprises the following components in parts by weight: 100 parts of R-vinyl polysiloxane; 10 to 80 parts of a reinforcing agent; 0.000002 to 1 part of a catalyst; wherein R in the R-vinyl polysiloxane is substituted or unsubstituted straight-chain alkane or branched alkane of C1-C5, and substituted or unsubstituted aromatic hydrocarbon of C6-C20, and R in the R-vinyl polysiloxane is substituted or unsubstituted straight-chain alkane or branched alkane of C1-C5, or substituted or unsubstituted aromatic hydrocarbon of C6-C20; the content of vinyl in the R-vinyl polysiloxane ranges from 0.1 mol% to 0.5 mol%; the components contained in the reinforcing agent comprise hydrophilic groups; the content of Si-H groups in the hydrogen-containing silicone oil is 0.18 mol% to 1.6 mol%; the molar ratio of the Si-H group in the hydrogen-containing silicone oil to the vinyl group in the R-vinyl polysiloxane is (0.5-10): 1; optionally, the composition also comprises an inhibitor. According to the silica gel material provided by the invention, the permeability of water to the silica gel tube is increased while the mechanical property is met, so that the release amount of a medicine is increased, and the defect of low in-vitro release degree in the prior art is improved.

The invention belongs to the technical field of polymer insulating materials, and particularly discloses a high-toughness and high-insulating-strength epoxy insulating material and a preparation method thereof. Single-end amine-terminated straight-chain alkyl groups with different chain lengths in a specific molar ratio are grafted to fluorine-containing epoxy resin to construct a side chain structure, and then a step curing process is adopted to form a three-dimensional cross-linked network with a curing agent under the action of an accelerant. The fracture toughness is remarkably improved by utilizing an epoxy body chain extension effect in a side chain grafting process and a uniform microphase separation structure formed by self-assembly of a long alkyl side chain in a curing process; meanwhile, through the synergistic effect of steric hindrance of a short alkyl side chain and a fluorine atom charge trap, delocalized electron transmission of a benzene ring conjugated structure is inhibited, and the insulating property is synchronously enhanced. Compared with a traditional toughening technology, insulation deterioration caused by toughening modification is effectively avoided, and an epoxy resin material with mechanical reliability and insulation stability is provided for high-voltage electrical equipment.

The invention discloses a deep-eutectic solvent for oil-containing solid waste treatment, an inorganic base and CO2 double-circulation oil-solid separation method based on the deep-eutectic solvent and the deep-eutectic solvent for oil-containing solid waste treatment. The deep-eutectic solvent for oil-containing solid waste treatment is characterized in that branched or cyclic short-chain fatty acid with pKa being 4-6 is used as a hydrogen bond donor; a phenol derivative with pKa being 9-11 or C6-C8 straight-chain alcohol is used as a hydrogen bond acceptor; the ratio of the hydrogen bond donor to the hydrogen bond acceptor is (5: 1)-(1: 5) according to the molar ratio of the hydrogen bond donor to the hydrogen bond acceptor; the regulation and control method based on the deep-eutectic solvent comprises the following steps: (1) reacting inorganic alkali with the deep-eutectic solvent to form a hydrophilic carboxylate and phenate solution; (2) after CO2 is introduced, fatty acid / phenols are collected to form a hydrophobic deep-eutectic solvent again, and meanwhile, a bicarbonate aqueous solution is obtained; and (3) heating the bicarbonate aqueous solution or introducing N2, removing CO2, and forming hydrophilic carboxylate and phenolate again by the eutectic solvent in the formed alkaline carbonate solution. According to the inorganic base and CO2 double-circulation oil-solid separation method based on the eutectic solvent, the eutectic solvent can be recycled.

A rubber coating for a radiofrequency identification device for a tyre characterized in that it comprises: (a) 100 phr of at least one diene-based elastomer; (b) at least one chemical according to formula (1) wherein the chemical comprises in its structure at least the structure of the 2,2′-methylenediphenol, and wherein the 2,2′-methylenediphenol may be substituted in ortho, para, meta position or any combination thereof with an aliphatic, linear or branched, hydrocarbon chain comprising from 1 to 10 C atoms, or may be polymerized in ortho, para, meta position or any combination thereof with one or more additional alkylphenol units. A radiofrequency identification (RFID) module for a tyre comprising a radiofrequency identification device surrounded by a rubber coating, a tyre or a tyre retread comprising such radiofrequency identification module, and use of a rubber coating for surrounding a radiofrequency identification device.

A photosensitive surface treating agent containing a compound represented by the following Formula (M1). In Formula (M1), R1 is a linear, branched or cyclic alkyl group having 1 to 6 carbon atoms, Y1 is a linear or branched alkylene group having 1 to 4 carbon atoms or a single bond, and the terminal carbon atom of the alkyl group for R1 may be bonded to a carbon atom constituting the alkylene group for Y1, and R1 and Y1 may form a ring. R2 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R3 and R4 are each independently an alkyl group having 1 to 3 carbon atoms, n0 is an integer of 0 or more, and X is a halogen atom or an alkoxy group.

The invention relates to the technical field of design synthesis and application of flame retardants, in particular to a phosphorus-nitrogen-containing synergistic ionic liquid flame retardant as well as a preparation method and application thereof. The phosphorus-nitrogen-containing synergistic ionic liquid flame retardant has a structure as shown in a formula I; wherein R1 is selected from a straight chain alkyl group of C1 to C18, a branched chain alkyl group of C1 to C18 or a cycloalkyl group of C3 to C18; r < 2 > and R < 3 > are independently selected from a straight chain alkyl group of C1 to C18, a branched chain alkyl group of C1 to C18, a cycloalkyl group of C3 to C18 or an aryl group of C6 to C24; and R4 is selected from an alkyl group of C1 to C18, an alkenyl group of C2 to C18 or an aryl group of C6 to C24. The phosphorus-nitrogen-containing synergistic ionic liquid flame retardant provided by the invention has the advantages of high flame retardant efficiency, simple production process, realization of industrialization, almost no influence on mechanical properties of high polymer materials and the like. The flame-retardant polymer material prepared from the flame retardant has very high commercial application value.

Provided is a curable silicone composition that has excellent curing properties and flow properties when heated and melted, and that enables fine filling, as well as excellent storage stability and thick molding properties, and that forms a hard cured product with low surface tack when cured. A curable silicone composition having hot-melt properties as a whole, comprises: (A) a solid organopolysiloxane resin that contains (A1) an organopolysiloxane resin having a curing reactive functional group and containing 20 mol % or more of a Q unit, and (A2) an organopolysiloxane resin not having a curing reactive functional group and containing 20 mol % or more of a Q unit; (B) 10 to 100 parts by mass of a straight-chain or branched organopolysiloxane having a curing reactive functional group; (C) an organohydrogenpolysiloxane; and (D) particles containing a hydrosilylation reaction catalyst using a thermoplastic resin with a Tg in a range of 110 to 200° C.

The invention discloses an alumina-loaded molecular alkane dehydrogenation catalyst and a preparation method and application thereof. The preparation method comprises the following steps: (1) carrying out modification treatment on alumina balls; and (2) adding the modified alumina balls into a dissolved solution of a molecular catalyst, stirring, reacting until the supernatant is colorless, filtering, and drying to obtain the alumina-loaded molecular alkane dehydrogenation catalyst. The catalyst provided by the invention is used in a process for preparing olefin through dehydrogenation of straight-chain alkane, the alkane conversion rate can reach 21% or above, the catalyst is high in catalytic efficiency, good in selectivity and easy to recover, and the activity of the recovered catalyst is still high.

The disclosure relates to a metallocene complex of formula (I), wherein Mt is Zr or Hf; X is a sigma ligand; R1 are each independently, same or different from each other, C1-C20-hydrocarbyl, optionally containing up to two heteroatoms of Group 14-16 of the Periodic Table, or form, together with the Si atom they are attached to, a C4-C8-ring; R2 and R2' are each independently, same or different from each other, C6-C10-aryl, heteroaryl, or CH2-R21, with R21 being H or C1-C10-hydrocarbyl; n are each independently, same or different from each other, an integer from 1 to 5; R3 and R4 are each independently, same or different from each other, H, linear or branched C1-C6-alkyl, C7-C20-arylalkyl, C7-C20-alkylaryl, C6-C20-aryl, or -OR31, with R31 being C1-C10-hydrocarbyl, whereby at least one R3 per present phenyl group and at least one R4 is not H; R5 and R6 are each independently C1-C10-hydrocarbyl or form together with neighbouring oxygen atoms -O(R61)m-O-, wherein R61 is independently -CH2-, -CHR*-, or -C(R*)2- group, with R* being C1-C2-alkyl and m being an integer from 2 to 4; R5' and R6' are each independently C1-C10-hydrocarbyl or form together with neighbouring oxygen atoms –O(R61')m-O-, wherein R61' is independently -CH2-, -CHR*-, or –C(R*)2- group, with R* being C1-C2-alkyl and m being an integer from 1 to 4; R7 is H, Me, OMe, or C6-C20-aryl, whereby the C6-C20-aryl is substituted 1 to 5 times with R3, whereby at least one R3 per said aryl group is not H.

The invention belongs to the technical field of chemical production, and particularly relates to an ionic liquid catalyst for synthesizing long-chain alkylbenzene as well as a preparation method and application of the ionic liquid catalyst. The ionic liquid catalyst is a mixed multi-acidic ionic liquid catalyst and mainly comprises two ionic liquids with different properties. Wherein the cation of at least one ionic liquid is derived from a hydrohalide or quaternary ammonium salt of an amine substituted by an alkyl group, and the other ionic liquid is an acidic ionic liquid. The ionic liquid catalyst can be applied to the reaction of long straight-chain olefin or mixed olefin raw materials and benzene to synthesize long-chain alkylbenzene, the reaction condition is mild, the product conversion rate is high, and the monoalkylbenzene selectivity is good. The catalyst has excellent raw material compatibility and recycling performance.

The invention relates to the technical field of synthesis of photosensitive organic compounds, and discloses a novel hydroxyl-containing dihydropyridine photosensitizer and a preparation method and application thereof.The method comprises the steps that 5-hydroxy-2-nitrobenzaldehyde serves as an initial raw material and reacts with 3-aminocrotonic acid methyl benzoate under the catalytic action of trifluoroformic acid, and a reaction product is obtained; precipitating, filtering and recrystallizing the product to obtain a photosensitive dihydropyridine monomer; the preparation method comprises the following steps: by taking 3, 5-dibromophenol as an initial raw material, introducing halogenated straight-chain alkyl of which the tail end is halogen into a hydroxyl position on the 3, 5-dibromophenol; dissolving a photosensitive dihydropyridine monomer and the intermediate A, and carrying out substitution reaction under the action of alkali to prepare an intermediate B; and carrying out Suzuki coupling reaction on the intermediate B and 4-hydroxymethyl phenylboronic acid to finally obtain the novel dihydropyridine photosensitizer containing hydroxyl. The novel hydroxyl-containing dihydropyridine photosensitizer (DHPDO) is good in compound stability, the preparation process is simple and convenient, the stability of an intermediate product is high, and after-treatment purification is low in toxicity and harmless.

The invention relates to coating agents containing A) at least one polyol component, B) at least one crosslinking component which is obtained by reacting at least one polyisocyanate with at least one amino functional alkoxy silane and which comprises free and / or blocked isocyanate groups, optionally (C) at least one catalyst for crosslinking silane groups, and D) optionally additional auxiliary agents and additives. The invention is characterized in that the polyol component A) comprises at least one polyester polyol A1) that has been produced using a 2,2,4,4-tetraalkylcyclobutane-1,3-diol (TACD) of the general formula (I), in which independently of one another the groups R1, R2, R3, and R4 represent linear or branched alkyl groups with up to 8 carbon atoms. The invention additionally relates to the use of the coating agents and to substrates which are coated with the coating agents according to the invention.

The disclosure relates to a composition comprising a triglyceride component wherein: the triglyceride component comprises a mixture of triglycerides and wherein the mixture of triglycerides comprises individual triglycerides comprising one or more ester containing fatty acids and wherein the esters of the ester containing fatty acids are C8-C22 branched or straight chain fatty acid esters and wherein the composition has a drop melting point of between 30° and 70° C. and / or a combined monoglyceride and diglyceride content of between 0.5 and 10 percent.

The invention provides a pharmaceutical composition, a rod core, an implant and a preparation method and application thereof. The pharmaceutical composition comprises the following components in parts by weight: 1-1000 parts of active pharmaceutical ingredients; 100 parts of R-vinyl silicone rubber; hydrogen-containing silicone oil; 0.000002 to 1 part of a catalyst; r in the R-vinyl silicone rubber is substituted or unsubstituted C1-C5 straight-chain alkane or branched alkane, and substituted or unsubstituted C6-C20 aromatic hydrocarbon; the content of vinyl in the R-vinyl silicone rubber is 0.10 to 0.50 mol%; the content of Si-H groups in the hydrogen-containing silicone oil is 0.15 to 1.6 mol percent; the molar ratio of Si-H group in the hydrogen-containing silicone oil to vinyl in the R-vinyl silicone rubber is (0.5-20): 1. The implant provided by the invention can reduce drug loss and sudden release phenomenon, the drug release is more stable, and the production speed is greatly increased.

The present invention relates to the technical field of diabetes, and in particular to a controlled-release diabetic wound healing promoting treatment method, comprising the following treatment experimental steps: step S1: preparation of Hst1@PNPs; step S2: Coomassie brilliant blue staining; step S3: scanning and transmission electron microscopy detection; in the present invention, a slow-release Hst1 treatment method is constructed by encapsulating Hst1 into platelet membrane vesicles derived from autologous blood. On the one hand, the PNPs encapsulate the linear Hst1 peptide structure to prevent it from being rapidly degraded by high proteases in diabetic wound exudate, thereby improving bioavailability. On the other hand, the PNPs can adsorb excess LPS in the wound exudate, and cooperate with Hst1 to achieve anti-inflammatory and anti-oxidative stress effects. Subsequent cell and animal experiments further confirmed that Hst1@PNPs have the effects of anti-inflammatory, scavenging ROS, promoting re-epithelialization, collagen deposition and angiogenesis, thereby promoting diabetic wound healing.

The invention provides heterocyclic tetrabasic acid as well as a preparation method and application thereof. The heterocyclic tetrabasic acid has a structure as shown in a formula I, # imgabs0 #, Y is selected from substituted or unsubstituted heterocyclic groups, and R1 and R2 are independently selected from C1-C10 straight chain or branched chain alkyl or substituted or unsubstituted aromatic rings. The heterocyclic tetrabasic acid has the advantages of good biocompatibility, low toxicity and the like due to the existence of amido bonds, and is suitable for synthesizing low-toxicity plasticizers.

To provide a PVC leather aqueous surface treatment agent that is an aqueous surface treatment agent for treating the surface of a leather base material having a surface containing vinyl chloride-based resin (PVC) and enables the manufacture of a PVC leather excellent in abrasion resistance, rubbing resistance, and alcohol resistance by suppressing migration of a plasticizer contained in the base material surface including PVC.SOLUTION: A vinyl chloride-based resin leather aqueous surface treatment agent includes: a chain extended product by (D) polyamine having two or more amino groups and / or imino groups of isocyanate group terminal prepolymer as a reaction product of (A) organic polyisocyanate, (B) polyol, and (C) polyalcohol; or a chain extended product by (D) polyamine having two or more amino groups and / or imino groups of neutralized product of isocyanate group terminal prepolymer as a reaction product of (A) organic polyisocyanate, (B) polyol, (E) compound having anionic hydrophilic group and at least two active hydrogens, and (C) polyalcohol. The (B) polyol includes polycarbonate diol constituted only of (B1) diol having straight-chain structure with even number in 4 to 10 of carbon number. The (C) polyalcohol includes polyalcohol having at least three or more active hydrogens.SELECTED DRAWING: None

The present invention discloses a method for preparing a hydroxy-deuterated linear alcohol. The method uses a carbonate as a substrate and heavy water as a deuterium source to carry out a deuteration reaction in the presence of a base catalyst to obtain the hydroxy-deuterated linear alcohol. The method achieves a high degree of deuteration, a high yield, and produces only CO2 as a byproduct.

An organometallic complex is represented by general formula (1).M is Pd or Pt. B-A-B is a tetradentate ligand formed by bonding a ring A to rings B. The ring A is a hydrocarbon aromatic ring or heteroaromatic ring that may have a substituent, and is selected from a benzene ring, etc. The substituent that the ring A may have is selected from a linear or branched C1 to C6 alkyl group, etc. Each of the rings B is a monocyclic heteroaromatic ring that may have a substituent, and is selected from a pyridine ring, etc. The substituent that the ring B may have is selected from a linear or branched C1 to C6 alkyl group, etc. Each X-Y is a bidentate ligand, and atoms bonded to M are selected from C, N, and O atoms. The two bidentate ligands do not bond together.

The invention provides an organic compound and application thereof, the boron-containing organic compound has a structure as shown in formula (1), Z1, Z2, Z3, Z4 and Z5 are respectively and independently CR01 or N, ring A and ring D respectively represent ring structures in fused connection, and a dotted line represents a position of an optional fused bond; ring B is fused through positions Z3 and Z4 or Z4 and Z5; the ring A, the ring B and the ring D are respectively and independently selected from one of an unsubstituted or R ''substituted C6-C60 aromatic ring and an unsubstituted or R'' substituted C3-C60 heteroaromatic ring; the ring A and the ring D are not connected or are connected through a chemical bond; r1 and R2 are respectively and independently one of hydrogen, unsubstituted or R ''substituted C1-C20 straight chain or branched chain alkyl, unsubstituted or R'' substituted C3-C20 cycloalkyl, unsubstituted or R ''substituted C4-C20 alkylsilyl, unsubstituted or R'' substituted C1-C20 alkoxy, unsubstituted or R ''substituted C6-C60 aryl, and unsubstituted or R'' substituted C3-C60 heteroaryl; r1 and R2 are not connected into a ring through a chemical bond, and at least one of R1 and R2 is selected from one of unsubstituted or R ''substituted C6-C60 aryl and unsubstituted or R'' substituted C3-C60 heteroaryl; and X is selected from the group consisting of CR11R12, SiR13R14 or N-Ar1. The compound disclosed by the invention has the properties of multiple resonance molecules and conjugated molecules, namely has a narrow fluorescence emission spectrum and high quantum efficiency, and can effectively improve the luminous efficiency and prolong the service life of an organic electroluminescent device when being applied to the organic electroluminescent device. # imgabs0 #

The invention relates to the technical field of lubricating oil, and discloses a low-temperature-resistant lubricating oil composition and a preparation method thereof. Mineral oil, modified polymethacrylate, a dispersing agent, an antioxidant and an oil defoaming agent are stirred and mixed and then filtered, and the low-temperature-resistant lubricating oil composition is obtained. The cross-linking agent enables polymethacrylate to form a light cross-linked structure, and stress can be dispersed during shearing; nitrogen atoms in triazinyl, pyridyl, pyrrolidone and Mannich base structures serve as hydrogen bond receptors, the hydrogen bond interaction with hydroxyl on a polymethacrylate molecular chain is enhanced, a physical cross-linked network is formed, and the shear resistance is further improved; in the modified low-temperature-resistant monomer, the glass-transition temperature can be remarkably reduced by high flexibility of silicon oxygen bonds in long straight-chain alkyl and silane groups, so that a molecular chain can still move at a low temperature, and the low-temperature fluidity of the lubricating oil is improved; the cyclic structure of cyclohexyl can effectively interfere with the ordered arrangement of wax crystals, reduce the pour point of the lubricating oil and improve the low-temperature fluidity.

The invention provides a fluorosilane modified gemini surfactant and a preparation method thereof, a resistance reducing agent and a preparation method thereof, and a polymer fracturing fluid. The fluorosilane modified gemini surfactant has a structure as shown in a formula I, wherein R1 is selected from one or a combination of more than two of saturated alkyl, alkylaryl, alkylalkyloxy, alkylacyl and unsaturated alkyl with 1-8 carbons, and R2 is selected from one or a combination of more than two of alkyl, alkylaryl, alkylalkyloxy, alkylacyl and unsaturated alkyl with 1-8 carbons; (CF2) the number of n in n is 1 to 18; x <-> is Br <-> and / or I <->; and R2 is selected from one or a combination of more than two of straight-chain saturated alkyl, branched-chain saturated alkyl, alkylaryl, alkylalkoxy, alkyl ester group and unsaturated alkyl with 1-8 carbons. According to the invention, the fluorosilane modified gemini surfactant is used as a hydrophobic monomer of the resistance reducing agent, so that the synthesized resistance reducing agent has a single-head and double-tail gemini surfactant structure, the tackifying and sand-carrying capabilities are improved, and the surface and interface tension of a gel breaking solution and reservoir rocks is reduced.

The invention provides an ultra-thin glass UTG (Untranslated Glass) protective coating and flexible electronic product glass containing the protective coating. The protective coating comprises a network polymer with the following structural formula (I), the network polymer is provided with a plurality of acrylate modified polyurethane chains and a plurality of carbon chains, the acrylate modified polyurethane chains and the carbon chains are alternately connected to form a network, the carbon chains are straight chains or branched chains, and the lengths of the carbon chains are the same or different. According to the protective coating, the impact resistance of the ultrathin glass can be improved by more than 200%, and the ultrathin glass has excellent visible light transmittance (greater than or equal to 91.5%), low haze (less than 1%), high pencil hardness (greater than 2H) and good adhesive force and wear resistance. In the structural formula (I), m is an integer from 1 to 10000, and each group is defined in the specification.

The present invention relates to a method for exchanging heat with an object said method comprising using a heat transfer fluid wherein said heat transfer fluid comprises one or more chemical compounds having the general formula (I) wherein: —Rf can be any C1-C10 fluorinated linear or branched carbon chain which can be partially or fully fluorinated, and can comprise O or S atoms, —X, Y and Z can be independently selected from halogens or hydrogen, with the provision that at least one of X, Y or Z is a halogen.

The invention relates to the technical field of materials, and discloses a preservative film for food storage and a preparation method thereof.The preservative film is prepared by taking polylactic acid as a matrix and compounding an antibacterial modifier, a functional chain extender and other additives through mixing, extrusion and blow molding processes, the preservative film is endowed with excellent antibacterial performance, is non-toxic and harmless, and can guarantee food safety, the functional chain extender can realize chain extension connection of polylactic acid, polylactic acid is converted into a three-dimensional cross-linked structure from a straight-chain structure, the cross-linking density of a polylactic acid molecular chain is further improved, and the service life of the preservative film is prolonged. The movement of a polylactic acid molecular chain under a high-temperature condition is hindered, so that the heat resistance of the preservative film is improved. In addition, the POSS skeleton contains a large number of silicon-oxygen bonds with high bond energy, so that the heat resistance of the preservative film can be further improved.

To provide an electrolyte, a secondary battery, and a power consumption device.SOLUTION: An electrolyte includes a solution and an additive. The solvent includes a compound of the formula I. The mass ratio of the compound of the formula I in the solvent is 35% or more. In the formula I, R1 and R2 are each independently selected from any one of a hydrogen atom, a C1-C3 chain alkyl group, and a C2-C3 alkenyl group. The additive includes a compound of the formula II. In formula II, R3, R4, and R5 are each independently selected from any one of a hydrogen atom, a fluorine atom, a phenyl group, a cyano group, a C1-C6 chain alkyl group, a C3-C6 cyclic alkyl group, and a C2-C6 alkenyl group. The present application can simultaneously consider the good dynamics performance, high-temperature performance, and over-charge prevention performance of a battery.SELECTED DRAWING: Figure 1

A polycarbonate resin composition or a copolymer, comprising, as main repeating units, a carbonate unit (a-1) having a fluorene ring in a side chain, a carbonate unit (a-2) represented by the following formula (a-2):(wherein W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear-chain alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms optionally having a substituent, and u represents an integer of 0 to 3), and a carbonate unit (a-3) derived from 2,2-bis(4-hydroxyphenyl)propane, wherein1) a molar ratio of the carbonate unit (a-1) to the carbonate unit (a-2) is from 50 / 50 to 80 / 20, and2) a molar ratio of the total of the carbonate unit (a-1) and the carbonate unit (a-2) to the carbonate unit (a-3) is from 1:99 to 70:30. This polycarbonate resin composition or copolymer has excellent heat resistance, transparency, and bending resistance and has low retardation.

The present invention provides an electronic or electrical device or component thereof comprising a cross-linked polymeric coating on a surface of the electronic or electrical device or component thereof; wherein the cross-linked polymeric coating is obtainable by exposing the electronic or electrical device or component thereof to a plasma comprising a monomer compound and a crosslinking reagent for a period of time sufficient to allow formation of the cross-linked polymeric coating on a surface thereof,wherein the monomer compound has the following formula:where R1, R2 and R4 are each independently selected from hydrogen, optionally substituted branched or straight chain C1-C6 alkyl or halo alkyl or aryl optionally substituted by halo, and R3 is selected from:where each X is independently selected from hydrogen, a halogen, optionally substituted branched or straight chain C1-C6 alkyl, halo alkyl or aryl optionally substituted by halo; and n1 is an integer from 1 to 27; and wherein the crosslinking reagent comprises two or more unsaturated bonds attached by means of one or more linker moieties and has a boiling point at standard pressure of less than 500° C.

The invention belongs to the technical field of polymer sealants, and particularly relates to a silane modified sealant for hollow glass and a preparation method of the silane modified sealant. The modified asphalt is characterized by comprising a component A and a component B, wherein the component A mainly comprises hydroxyl-terminated polybutadiene, asphalt, a plasticizer, a filler, carbon black and a thixotropic agent; the component B is mainly prepared from isocyanate silane, a cross-linking agent, a coupling agent and a catalyst. According to the invention, hydroxyl-terminated polybutadiene is used as basic polymerization, a main chain is a carbon-carbon straight chain and has good compatibility with petroleum asphalt, a compact structure can be formed, and meanwhile, high-activity isocyanate silane and hydroxyl-terminated polybutadiene are terminated to form silane terminated polybutadiene, so that the flame retardance of the petroleum asphalt is improved, and the flame retardance of the petroleum asphalt is improved. And finally, a net structure with excellent weather resistance is formed through siloxane cross-linking and curing, so that the hollow glass has good water-gas sealing property and excellent weather resistance for structural bonding, and therefore, when the hollow glass is manufactured, only one layer of glue is required to be coated, a butyl rubber coating process is reduced, material waste is reduced, and the production efficiency is improved at the same time.

This invention relates to a polyurethane microcapsule emulsion, its preparation method, and its application. The raw materials for preparing the polyurethane microcapsule emulsion, by weight, include: 30-50 parts of unsaturated polyester polyol, 10-25 parts of isocyanate monomer, 3-6 parts of hydrophilic monomer, 2-5 parts of small molecule alcohol chain extender, 1.5-5 parts of neutralizing agent, 0.1-0.5 parts of organometallic catalyst, 20-50 parts of organic solvent, 5-15 parts of pesticide active ingredient, 3-10 parts of C6-C15 straight-chain or branched-chain olefin monomer, 0.1-0.5 parts of initiator, and 100-160 parts of water. The polyurethane microcapsule emulsion provided by this invention solves the problems of low crosslinking density, simple structural topology, insufficient hydrophobicity, and poor encapsulation stability of existing pesticide microcapsules, improving the controlled-release performance, capsule wall density, and emulsion system stability of the polyurethane microcapsule emulsion.