34results about "Preparation by etherification" patented technology

The invention discloses a bright yellow disperse dye capable of alkaline dyeing. The bright yellow disperse dye is a compound represented by a formula A, wherein R1 is -H, -CH3, -C2H5, -OCH3 or -OC2H5, and R2 is C1-C4 straight-chain or branched-chain alkyl or benzyl. The disperse dye shows a bright yellow color, can be used individually and also can be in combination use with alkali-resisting disperse dyes having other colors. The disperse dye has excellent alkali resistance and hydrogen peroxide oxidization resistance stability; the characteristic makes the disperse dye not only can be applied in general alkaline printing and dyeing processing of a polyester fiber material, but also can be applied in a scouring dyeing-bath process or a bleaching dyeing-bath process and a dispersed active one-paste printing process, and can meet the requirements of environmental protection.

A polarization film, including a polymer resin, and a dichroic dye dispersed in the polymer resin and represented by the following Chemical Formula 1:wherein, in Chemical Formula 1, Ar, R1 to R4 are the same as those defined in the detailed description.

There is provided a novel dichroic dye having liquid crystal properties, dichroic properties and polymerizable reactivity, the dichroic dye being used to form a color filter layer having excellent physical properties such as dichroic ratio, heat resistance, durability, high contrast ratio and polarizing properties, a composition comprising the same for color filter, a color filter array plate (an upper plate) prepared therefrom, and a liquid crystal display comprising the color filter array plate. The dichroic dye has a structure of R1-L1-M-L2-D (wherein, D is a dichroic structure, M is a structure with liquid crystal properties, R1 is a reactive end functional group, and L and L1 are linking structures that link R1, M, and D), and the composition for forming a color filter layer includes the dichroic dye. Also, the color filter array plate, which comprises color filter layer formed of the composition of this invention and the liquid crystal display, which comprise the color filter array plate but does not requires an upper alignment film and / or a polarization plate are provided. The color filter array plate and the liquid crystal display comprising the same have excellent physical properties such as durability, polarizing degree, resolution and contrast ratio.

A compound serving as a dichroic pigment which has a maximum absorption wavelength in a range of 350 nm to 510 nm is represented by the following Formula (1):In Formula (1), R1 represents a hydrogen atom or a C1-C20 alkyl group; R2 through R4 are substituents which are not hydrogen atoms and each independently represent a C1-C4 alkyl group; n, m, and p are each independently an integer of 0 to 2; and Ar1 represents a nitrogen-containing saturated heterocyclic group which is a 5 to 8-membered ring and in which (i) N is bonded to a phenylene group and (ii) at least one β-position is an oxygen atom or a sulfur atom.

The present invention addresses the problem of providing with a simple production process and with high efficiency a new photosensitive azobenzene derivative which is capable of freely controlling phase transition by photostimulation, and the problem is solved by using an azobenzene derivative represented by general formula (1). (1) (In the formula, R1 and R6 are independently an alkoxyl group having 6-18 carbon atoms, R2-R5 and R7-R10 are independently a hydrogen atom or an alkyl group having 1-4 carbon atoms which may have branches, provided that not all of R2-R5 and R7-R10 are hydrogen).

The invention discloses a method for preparing direct yellow G. DSD acid is taken as an initial raw material, and the method comprises the following steps of: reacting with sodium nitrite, phenol and chloroethane in turn, and respectively performing diazotization, coupling and chloroethane etherification to obtain the direct yellow G, wherein a solvent in diazotization, coupling and chloroethane etherification is ethanol. The DSD acid is taken as the initial raw material and is subjected to diazotization, coupling and chloroethane etherification respectively to form a dye of the direct yellow G, the ethanol is adopted as a reaction solvent in the diazotization, coupling and chloroethane etherification and can be recycled after reaction, a large amount of water is prevented from serving as the reaction solvent, the problem that a large amount of industrial wastewater is difficult to treat is radically solved and the zero emission of the industrial wastewater is achieved.

The invention belongs to the field of chemical industry, and particularly relates to a sun-proof disazo acid dye with an H acid structure and a preparation method of the sun-proof disazo acid dye. Thepreparation method comprises steps as follows: step 1), pentamethyl-4-piperidinol is subjected to chlorination, and a chlorinated intermediate product HALS-Cl is prepared; step 2), HALS-Cl and a disazo acid dye with the H acid structure are subjected to condensation, and the product, namely, the sun-proof disazo acid dye with the H acid structure is obtained finally. Aiming at solving the problemof low light fastness of the disazo acid dye with the H acid structure, two hindered amine light stabilized fragments are simultaneously introduced to the adjacent positions of an azo bond in the dyestructure, hydroxyl and amino are converted into an ether bond (-O-) and imino (-NH-) respectively, so that the oxidizing reaction of amino (-NH2) or hydroxyl (-OH) is effectively avoided, meanwhile,close-range protection of a disazo bond is realized, and a series of disazo acid dyes with excellent light fastness are developed.

The invention discloses an application of a bright yellow disperse dye mixture. The application of the disperse dye mixture in dyeing or printing of a polyester fiber material is provided; the disperse dye mixture comprises the following components by the mass percentage: 0-100% of a dispersed dye A, 0-100% of a dispersion dye B, and 0-100% of a disperse dye C, wherein the contents of the dispersed dye A, the disperse dye B and the disperse dye C are not 0 at the same time. The disperse dye mixture shows a bright yellow color, and has excellent alkali resistance and hydrogen peroxide oxidation resistant stability.

The invention discloses bright yellow disperse dyes. The bright yellow disperse dye is a compound shown in formula B, wherein R3 is C1-C4 straight chain or branched chain alkyl, -OCH3 or -OC2H5, R4 and R5 are independently H, halogen or nitro, but not While being -H or nitro, R6 and R7 are independently methyl, ethyl, -C2H4CN, -C2H4OCH3, -C2H4OC2H5 or benzyl. The disperse dye of the present invention is bright yellow, can be used as a single color, and can also be used in combination with alkali-resistant disperse dyes of other colors. It has excellent alkali resistance and hydrogen peroxide oxidation stability, and this feature makes it not only Applied to general alkaline printing and dyeing of polyester fiber materials, it can also be applied to scouring dyeing one-bath process or bleaching one-bath process, as well as disperse reactive same-sizing printing process, and can meet environmental protection requirements.

The invention discloses a preparation method of a disperse dye capable of alkaline dyeing. The preparation method comprises the following step of carrying out a substitution reaction of a compound VI and a compound X-R2, wherein R1 is -H, -CH3, -C2H5, -OCH3 or -OC2H5, and R2 is C1-C4 straight-chain or branched-chain alkyl or benzyl, R8 is C1-C4 straight-chain or branched-chain alkyl, nitro, -NHCOCH3 or -NHCOC2H5, R9 and R10 are independently -H, halogen or nitro, and X is halogen. The disperse dye obtained by the preparation method shows a bright yellow color, can be used individually, also can be in combination use with alkali-resisting disperse dyes having other colors, and has excellent alkali resistance and hydrogen peroxide oxidization resistance stability.

The invention discloses an application of a disperse dye capable of alkaline dyeing. The application of the disperse dye capable of alkaline dyeing and represented by a formula C in dyeing or printing of a polyester fiber material is provided, wherein R1 is -H, -CH3, -C2H5, -OCH3 or -OC2H5, and R2 is C1-C4 straight-chain or branched-chain alkyl or benzyl, R8 is C1-C4 straight-chain or branched-chain alkyl, nitro, -NHCOCH3 or -NHCOC2H5, and R9 and R10 are independently -H, halogen or nitro. The disperse dye shows a bright yellow color, can be used individually, also can be in combination use with alkali-resisting disperse dyes having other colors, and has excellent alkali resistance and hydrogen peroxide oxidization resistance stability.

The invention discloses a preparation method of a black waterborne polyurethane dye based on black chromophores in diols. The preparation method is characterized by comprising the following steps of enabling activated hydrogen in amino groups or hydroxyls contained in molecular structures of three black dyes to react with chloroethanol to obtain three black diols; then, combining the black diols with micromolecular diols, and partially or completely substituting the micromolecular diols; and next, reacting with diisocyanate, macromolecular diols and a hydrophilic chain extender to obtain the black waterborne polyurethane dye. By using the method, other micromolecular chain extenders can be partially or completely substituted with the black diols, so that solid content of an emulsion is wide in distribution range and adjustable, and the content of the black chromophores in a molecular chain of polyurethane can be controlled as required; and meanwhile, the black chromophores enter the molecular chain of the dye in a chemical bonding way, so that the characteristics of high temperature resistance, solvent resistance and migration resistance of a macromolecular dye can be sufficiently exerted, and the dye is good in durability, high in color fastness and good in safety.

The invention discloses a compound represented by the following formula: R is hydrogen or alkyl; X is alkylene; Y is bond, ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonic acid Ester, carbamate, thiocarbamate, urea, thiourea, alkylene, arylalkylene, alkylarylene, or arylene, wherein alkylene, arylalkylene , alkylarylene, and arylene are optionally replaced by ether, thioether, amine, amide, ester, thioester, carbonate, thiocarbonate, carbamate, thiocarbamate, urea , or at least one of thiourea for at least one of insertion or termination; and Z is acrylate, methacrylate, acrylamide, methacrylamide, styryl, or a compound having at least three carbon atoms terminal alkenyl. Compositions comprising the compounds, and methods of determining the degree of cure of curable polymeric resins are also disclosed.

The invention discloses a dioxybenzone containing anitro-azobenzene dye by an ether bond and a synthesizing method and application thereof, pertaining to the organic dye field, and particularly relates to an anitro-azobenzene dye that is connected with the dioxybenzone by the ether bond and application thereof in light polymerization. A typical chemical structure general formula of the compound of the anitro-azobenzene dye is showed on the right, wherein, n in the molecular structural formula (I) represents 1-6, R represents methyl, ethyl, propyl, butyl, amyl, hexyl or is completely the same as a substituting group at the other side of N. 4-bromomethyl dioxybenzone reacts with derivative of anitro-azobenzene compound that contains hydroxyl under alkaline conditions in a glass container, and the dioxybenzone containing anitro-azobenzene dye is prepared by the ether bond. The maximum absorption of the anitro-azobenzene dye is at a visible light area; therefore, the invention can be used as photoinitiator and the photoinitiator and an addition agent, triethanolamine, form a photosensitive system that is used for polymerization of visible light of vinyl monomers in solution or as photo-curing material.