564 results about "Benzoin compound" patented technology

The instant invention pertains to a curable composition comprising (a) substance that generates free radicals under the action of ultraviolet radiation and (b) polymer molecule bearing functionality capable of polymerization under the action of said free radicals wherein (a) is a benzoin ether and makes up from 0.001 to 10 wt % of the total composition and (b) has the following formula(R3SiO1/2)a(R'2SiO2/2)b(R''SiO3/2)c(SiO4/2)din which R, R', and R'' are each H or C1 to C10 hydrocarbyl possibly containing a heteroatom and at least 10% is, for example, a vinyl group, and a+b+c+d=1. The composition of the instant invention is a storage-stable UV-curable composition that does not suffer from cure inhibition by air or oxygen, that is very efficiently cured by low doses of UV radiation, and provides a highly heat-resistant cured pattern by heating after pattern formation.

The invention discloses a specific nanometer paint of energy-saving environment-protective typed aluminium alloy section bar (door and window), which comprises the following parts: 90-100% filming agent, 0.1-10% hardener, 0.5-8% levelling agent, 0.5-10% nanometer material, 20-50% fill and 10% hollow microball, wherein the filming agent is one or more of epoxy resin, polyester resin, acrylic acid resin, amino resin, phenol resin or alkide resin; the hardener is one or more of dicyandiamide, imidazole, dihydrazide, polybasic carboxylic acid, beta-hydroxyalkyl amide or triglycidol isocyanuric ester hardener; the levelling agent is one or more of polyacrylic resin, siliceous acryl resin, polyvinyl butyral, benzoin, hydrocastor oil, cellulose acetate butyrate or epoxy soy oil; the nanometer material is nanometer zinc oxide; the hollow micro-ball is hollow ceramic microball.

A polymerizable polymeric photoinitiator according to Formula (I):

wherein:

• • PL represents an n+m+p-functional polymeric core;
  • n and m independently represent an integer from 1 to 30;
  • p represents an integer from 0 to 10;
  • o is 0 or 1;
  • INI represents a group selected from the group consisting of a benzophenone, a thioxanthone, a carbazole, a anthraquinone, a camphor quinone, an α-hydroxyalkylphenone, an α-aminoalkylphenone, an acylphosphine oxide, a bisacyl phosphine oxide, an acylphosphine sulfide, a phenyl glyoxalate, a benzoin ether, a benzyl ketal, an α-dialkoxyacetophenone, a carbazolyl-O-acyl-oxime, an α-haloarylketone and an α-haloaryl sulfone;
  • L₃ and L₄ represent a substituted or unsubstituted divalent linking group comprising 1 to 14 carbon atoms;
  • A represents a radically polymerizable functional group selected from the group consisting of an acrylate, a methacrylate, a styrene, an acryl amide, a methacryl amide, a maleate, a fumarate, an itaconate, an vinyl ether, an allyl ether, an allyl ester, a maleimide, a vinyl nitrile and a vinyl ester; and
  • R4 represents a substituted or unsubstituted alkyl group.

Radiation curable compositions containing the polymerizable polymeric photoinitiator and methods for preparing the polymerizable polymeric photoinitiator are also disclosed.

The invention discloses a thin spray powder coating and a preparation method thereof. The thin spray powder coating is mainly prepared from the following raw materials by weight percent: 50-75% of resin, 3-25% of curing agent, 1-12.5% of pigment, 0.3-20% of filler and 0.1-10% of addition agent; the curing agent comprises one or more of an epoxy curing agent, a polyisocyanates curing agent, a polyamine curing agent and a phenols curing agent; the addition agent comprises a flatting agent, a sensitizer and benzoin. The method for preparing the thin spray powder coating comprises the following steps: adding the flatting agent in the resin production process to obtain a modified resin raw material; mixing the modified resin raw material, the curing agent, the pigment, the filler and the other addition agent, and squeezing in a double-screw extruder to obtain the extrudate; and tabletting, cooling, milling and sieving the extrudate to obtain the powder coating. By adopting the thin spray powder coating and the preparation method thereof, the spraying thickness is small, the energy consumption is reduced and the cost is reduced.

The invention discloses a powdery paint for aluminum profile and a preparation method thereof. The powdery paint is composed of carboxyl-terminated saturated polyester resin, triglycidyl isocyanurate (TGIC), titanium dioxide, precipitated barium sulfate, a brightener, a leveling agent and benzoin. The preparation method contains the following steps of: batch mixing, melt extrusion, crushing and ultrafine comminution. The powdery paint for aluminum profile has low curing temperature. By the adoption of the powdery paint, volatilization amount of residual TCIC low molecular organic matter is reduced. The powdery paint is beneficial to environmental protection and the health of human body. In addition, the appearance of the film is more flattening and fine.

The invention discloses an ultra low temperature epoxy resin and polyester mixed powder coating material. The compositions in percentage by weight of the coating material are: 32 to 38 percent of epoxy resin, 32 to 37 percent of polyester, 18 to 22 percent of titanium pigment, 0.8 to 1.2 percent of flatting agent, 0.3 to 0.5 percent of antifoaming agent, 1 to 1.2 percent of antistatic agent, 1 percent of benzoin, 0.7 to 2 percent of pigment, 0.8 to 1 percent of brightness agent and 2 to 5 percent of filler. Aiming to overcome the disadvantages of the prior powder coating material including high cost and narrow application range, the invention provides the ultra low temperature epoxy resin and polyester mixed powder coating material which has low cost and wide application. The coating material has the advantages of high utilization rate, non toxicity, no pollution, high yield and low cost, etc.

The invention relates to novel low-temperature curing epoxy powder paint, which consists of the following ingredients in parts by weight: 48 to 52 parts of epoxy resin, 8 to 10 parts of modified crosslinking agents, 0.5 to 1.0 part of catalysts, 0.8 to 1.2 parts of leveling agents, 0.4 to 0.6 part of benzoin, 8 to 12 parts of titanium dioxide, 0.4 to 0.6 part of wetting agents, 16 to 24 parts of precipitated barium sulphate, 6 to 10 parts of active silicon micro powder and 0.2 to 0.3 part of wax powder. The novel low-temperature curing epoxy powder paint solves the problems of high curing temperature, narrow application range, high energy source consumption and the like of the existing universal powder paint, and has the advantages of low curing temperature, wide application range, low energy source consumption and the like.

The invention relates to a powder coating, in particular to a powder coating for a radiator and a preparation process of the powder coating. The powder coating consists of the following components: 30-32 percent of phenolic aldehyde modified epoxy resin, 30-32 percent of hydroxyl saturated polyester resin, 0.5-1.5 percent of pigment, 20-30 percent of rutile TiO2, 8-12 percent of calcium carbonate, 0.8-1 percent of flatting agent, 0.4-0.6 percent of yellow-preventing benzoin, 0.4-0.6 percent of polysiloxane defoaming agent, 0.8-1.3 percent of cross-linking agent and 0.5-1 percent of antioxidant. The powder coating for a radiator is scientific in formula, the cured film cannot become yellow after being exposed in a high-temperature working environment of the radiator for a long time, the salt fog resistance, gloss preserving property and the impact resistant property of the film are excellent, the preparation process is simple and feasible, and the market prospects are wide.

The invention discloses a low-temperature curing epoxy polyester powdery paint used on the surface of bakelite. The paint comprises, by weight, 20.0 to 40.0% of a polyester resin, 20.0 to 40.0% of an epoxy resin, 1.0 to 3.0% of a curing accelerator, 0.1 to 0.5% of benzoin, 0.5 to 2.0% of a leveling agent, 0.1 to 0.5% of a charge increasing agent, 0.1 to 1.0% of a lustering additive, 0.2 to 1.0% of wax powder, 10.0 to 30.0% of a pigment and 10.0 to 30.0% of a filling material. The powdery paint provided by the invention has good adhesion on the surface of bakelite and undergoes roasting and curing at a temperature of 150 to 160 DEG C for 10 to 20 min, and a coating with excellent performance can be obtained.

The invention discloses a tetrapherylpyrazine low-molecular-weight derivate, a tetrapherylpyrazine polymer and an aggregation-induced emission material. The tetrapherylpyrazine low-molecular-weight derivate is of a structure as shown in a formula (1), wherein R1, R2, R3 and R4 are independently selected from hydrogen, alkoxy, substituted or unsubstituted phenyl, halogen or acetenyl; the substituent of phenyl is aromatic group. The tetrapherylpyrazine derivate is basically prepared by two methods, namely, (1) the method for preparing by the cyclization reaction of a benzoin derivative, and (2) preparing by the cyclization reaction of dibenzoyl derivate and 2-diphenyl diaminoethane; the synthesized diyne derivate can be derived by clicking polymerizing through an AIE (Aggregation Induced Emission) polymer. In light of the simple and convenient synthesis, tetrapherylpyrazine can be used as a novel AIE mother nucleus following after hexaphenyl silole and tetraphenyl ethylene and is wide in applicable scope. The formula is described in the specification.

The invention relates to a benzoin oxime derivative and a preparation method thereof. A structural formula of the benzoin oxime derivative is shown in the specification. The preparation method comprises the following steps: reacting malonate with propargyl bromide in anhydrous acetonitrile under the catalysis of sodium hydride to obtain a white solid product; by taking triethylamine as alkali, reacting the white solid product with phenylethynyl bromine or substituted phenylethynyl bromine in anhydrous acetonitrile under the catalysis of Pd(PPh3)2Cl2/CuI to obtain a light brown solid product; reacting the light brown solid product with benzoin oxime in toluene at 95-105 DEG C to obtain the benzoin oxime derivative. A brand new synthetic method of polysubstituted benzoin oxime is provided, and a series of new benzoin oxime derivatives are generated. Compared with normal benzoin oxime derivatives, the benzoin oxime derivative prepared by virtue of the preparation method has relatively complex and diverse structures by virtue of multiple cycles, and presents relatively wide application prospects in chemical industry production and clinic medicines.

The invention relates to a Si-containing macromolecular photoinitiator and the synthesizing method and the uses belong to the photographic polymer material field. In a general formula of the photoinitiator being (I), I is the photoinitiator with hydroxyl, i.e. the hydroxyl-containing benzoin class, benzoin ethers, alkyl-acetophenones, alkyla-acetophenones, benzophenone type, thioxcanthone derivatives, coumarone class and camphorquinone compound; R1 is the alkyl of C1-C12, or the alkyl or aryl of C1-C12 substituted by N, O, S heteroatoms; R2 and R3 are alkyls of C1-C12, the alkyls of C1-C12 substituted by N, O, S heteroatoms, or alkoxyls of C1-C12; n is equal to 3 to 50. The synthesizing method obtains the compounds of isocyanate with photoinitiator by the reaction of the hydroxyl-containing micro-molecular photoinitiator with an isocyanate group of the diisocyanate, and allows the reaction of the photoinitiator-containing compounds of isocyanate with the hydroxyl-containing siloxane macromolecular compounds. The synthesizing method is used for initiating the free radical photopolymerization, improving the speed and efficiency of producing active species by photo sensitive decomposition and reducing the micro-molecular residue and biological toxicity of coatings.

The invention relates to an ultra-low temperature epoxy resin nylon hybrid thermosetting powder coating, which comprises the following components by weight: 40 to 50 percent of epoxy resin, 15 to 20 percent of nylon, 10 to 14 percent of curing agent, 10 to 18 percent of titanium pigment, 0.8 to 1.2 percent of leveling agent, 0 .5 to 1 percent of defoamer, 1 percent of benzoin, 0.7 to 2 .5 percent pigment, 0.8 to 1 percent of sensitizer, and 1 to 15 percent of filler. A method for preparing the ultra-low temperature epoxy resin nylon hybrid thermosetting powder coating comprises the following steps: after preparing the materials according to the formulation, mixing the materials in a mixer; extruding the well mixed mixture by a twin-screw extruder; cooling sheet materials after the extrusion, crushing and grinding the sheet materials into powder of 200 to 500 meshes in a grinding mill; and packaging the powder for storage. The ultra-low temperature epoxy resin nylon hybrid thermosetting powder coating has the advantages of environmental protection, non-toxicity, no solvent, no discharge of VOC, one-time spray molding, and accordance with the ROSH standard.

The invention relates to an indoor decorative metal powder coating, pertaining to the powder coating technique field of electrostatic coating. The coating is made from raw materials according to the following weight proportion: 20 to 30 percent of epoxy resin (E-12), 20 to 30 percent of indoor polyester resin, 0.8 to 5 percent of flow agent, 1 to 2 percent of metal pigment PCR214, 0.1 to 0.3 percent of metal pigment PC100, 0 to 2 percent of metal pigment PCR212, 0 to 50 percent of filler, 0.1 to 5 percent of conventional pigment, 0.2 to 0.4 percent of benzoin and 0.1 to 0.2 percent of fumed silica, wherein, the resins, the conventional pigment, the filler and various addition agents are all common types and specifications in powder coating. The invention has the beneficial effects of simple production and application, innocuity, no pollution, and rich raw material resources with low cost.

The invention relates to a nanometer ultrathin coat powdery coating. The nanometer ultrathin coat powdery coating is composed of 50-60 parts by weight of a resin, 5-10 parts by weight of a curing agent, 5-8 parts by weight of a leveling agent, 0.2-0.6 parts by weight of benzoin, 5-7 parts by weight of nanometer titanium-containing powder, 7-8 parts by weight of a filler and 18-22 parts by weight of a pigment. The coating is prepared through uniformly mixing the above raw materials according to proportions, extruding and grinding. The coating has an excellent dispersion performance, and allows a coat using the coating to have the advantages of good ultrathin spraying performance, improvement of various performances of the coat to different degrees, good leveling property, large spray area, and greatly improved coat compactness and water tolerance.

The present invention relates to a bifunctional catalyst and an application of the bifunctional catalyst in preparation of benzil by benzoin dehydrogenation/oxidation. According to the catalyst, an anion exchange resin or a cation exchange resin is adopted as a carrier; a variable-valence transition metal or a rare earth metal element is bonded on the carrier in a chemical bonding manner, whereinthe binding amount of the variable-valence transition metal or the rare earth metal element is 0.5-10% of the weight of the catalyst; the metal element on the carrier is bonded with an acidic ion exchange resin or an alkaline ion exchange resin through chemical bonds, wherein the metal element on the carrier is adopted as an oxidation catalyst; under a certain reaction condition, benzoin is subjected to a dehydrogenation/oxidation process, hydroxyl is transformed into carbonyl, and the measured water is generated. The catalyst has the following advantages that: the use conditions are mild, the product is easy to separate, the catalyst can be used many times, and the like.

The invention discloses an antibiotic powdery paint for aluminium profile and a preparation method thereof. The antibiotic powdery paint comprises carboxyl end group saturated polyester resin, triglycidyl isocyanurate (TGIC), titanium dioxide, precipitated barium sulfate, antibiotic mildew inhibitor, brightener, levelling agent and benzoin. A preparation method comprises steps of batch mixing, fusion extrusion, fragmentation and fine crushing. The antibiotic powdery paint for aluminium profile prepared by the method of the invention has good antibiotic and mildew-resistant effects, long-lasting antibiotic and mildew-resistant effects, good compatibility with main film forming substances in powdery paint and no influence on decorative effect of powdery paint.

The invention discloses a method preparing for an ultra-thin inflatable steel structure fire-proof powder paint; which comprises the following parts: 45%-60% tetrabromo-bisphenol A epoxide resin, 2. 2%-3% dicyandiamide, 15%-21% ammonium polyphosphate, 10%-14% melamine, 5%-7% dipentaerythritol, 0. 5%-2% levelling agent, 0. 3%-0. 5% benzoin, 5%-10% titanium dioxide. The invention comprises the following steps: adding natrium hydroxydatum and water to the autoclave; adding tetrabromo-bisphenol A; mixing and heating at 75 Deg. C; adding colature to the autoclave; cooling to 45-55 Deg. C; adding epichlorohydrin; reacting at 80-85 Deg. C; heating to 90-95 at softening point; adding water; cooling; mixing; washing with the hot water; dewatering at the atmosphere pressure; heating to 125-140 Deg. C; getting the stramineous solid tetrabromo-bisphenol A epoxide resin; Mixing tetrabromo-bisphenol A epoxide resin, dicyandiamide and levelling agent at the high speed; mixing benzoin, titanium dioxide, ammonium polyphosphate, melamine, dipentaerythritol; melting and squeezing the materials after mixing; pelleting the melted materials; disintegrating and grading after cooling and bruising; getting the fire-proof powder paint.

The invention discloses an automobile air conditioner cleaning agent and a preparation method thereof. The preparation method comprises the following steps: mixing deionized water, sodium xylene sulfonate, propylene glycol methyl ether and ethylene glycol monobutyl ether to prepare a mixed solution M; grinding peppermint, fructus forsythia, benzoin and borneol, then sieving, then adding into an ethanol solution, heating, stirring uniformly, and performing suction filtration to obtain a filtrate N; and mixing the mixed solution M with the filtrate N to obtain the automobile air conditioner cleaning agent. By using the automobile air conditioner cleaning agent, the problems that the current air conditioner cleaning agent cannot be volatilized easily and can generate a pungent smell after use at the same time are solved.

The invention discloses a powder coating which is washing-durable, anti-doodle and can be erased and written repeatedly on the surface. The components of the invention contains hydroxy resin with the hydroxyl value being 40 to 350 (mg KOH/g), isocyanate curing agent with the mass content of isocyanic acid radical being from 10 percent to 20 percent, inorganic filler, pigment, benzoin, an ether flatting agent, an electric power increasing agent, a ventilated agent and wax powders, etc. the invention also discloses a production method of the powder coating. The powder coating which is washing-durable, anti-doodle and can be erased and written repeatedly on the surface of the invention has very good chemical resistance and the doodle on the surface can be erased rapidly. The ordinary doodle liquid and paint can be erased easily or removed with menstruum and have no affect to the coating surface. The invention is suitable for indoors and outdoors, and can be used for the coating of white board, public facilities such as traffic indication boards, bus stop boards, newspaper boxes and public furnitures.

The invention discloses a fluorine resin-modified polyester powder coating for an aluminum profile. The fluorine resin-modified polyester powder coating comprises multiple auxiliaries and pigments such as carboxyl-terminated saturated polyester resin, TGIC (triglycidyl isocyanurate), FEVE (fluoroethylene vinyl ether) fluorine resin, an isophorone diisocyanate tripolymer, a flatting agent, a brightening agent, benzoin and precipitated barium sulphate. A preparation method for the powder coating comprises the following steps of premixing the raw materials of the powder coating, and performing melted extrusion, tabletting, crushing and screening to obtain a finished product. The weather resistance of the powder coating can be greatly improved, the heat resistance and cold resistance of a film can also be improved, influence on decoration effects and the preparation method of the powder coating is avoided, and the price of the powder coating can be accepted by domestic users.

The invention discloses a photoinitiator containing asymmetric hexa-aryl diimidazole and a preparation method thereof. The invention mainly solves the problems that a photoinitiator containing symmetric hexa-aryl diimidazole is not sensitive to long-wave ultraviolet light and visible light during a photo-curing process; and the residual photoinitiator is migrated to the surface of photoresist material after photo-curing to form an atomization phenomenon, thereby impacting the quality, and production, use environment and the like of a photoresist product, and restricting the application of the photoinitiator in the field of microelectronic material. The preparation method adopts the main raw materials of 3, 4-dialkoxy benzaldehyde, benzaldehyde, and the benzaldehyde having the substituent of fluorine or chlorine atoms. The photoinitiator containing asymmetric hexa-aryl diimidazole is obtained through a plurality of synthesis steps such as benzoin synthesis, benzyl synthesis, and the like. The alkoxy and fluorine or chlorine atoms with higher activity are introduced into the asymmetric hexa-aryl diimidazole to improve the solubility of the photoinitiator. In addition, the photoinitiator has good absorption of ultraviolet light and visible light, reconditions and improves the production and application environment of the photoresist product, and reduces the emission of pollutants.

The invention relates to the technical field of preparation for powder coatings with special performances, and particularly relates to an ultra-level highlight powder coating formula and a preparation method thereof. The powder coating has the following formula components in parts by mass: 28-34 parts of epoxy resin, 28-34 parts of polyester resin, 1.5-3.5 parts of a levelling agent, 22-25 parts of titanium dioxide, 2.5-4.8 parts of barium sulphate, 0.1-0.6 part of benzoin, 0.2-0.6 part of an antioxidant, 0.02-0.28 part of ultramarine, 0.002-0.004 part of carbon black and 0.2-0.35 part of silicon dioxide. The coating film of the powder coating obtained by the technical scheme disclosed by the invention has a good levelling performance, the interface cured by the powder coating has good decoration performance, and the powder coating can be applied to surface protection on automobiles, household appliances, furniture and the like, as well as is low in use cost and suitable for popularization and application.