13 results about "Glycoluril" patented technology

The invention belongs to the field of organic synthesis, and particularly relates to a method for industrially producing 2-chloronicotinic acid, which comprises the following steps: carrying out chlorination on ethyl nicotinate in the presence of a catalyst metal benzimidazole ionic liquid IL-1 and a chlorinating agent tetrachloro glycoluril to generate ethyl 2-chloronicotinate; 2-chloronicotinic acid ethyl ester is subjected to a hydrolysis reaction in the presence of alkali, then the pH value of the solution is adjusted to be 2-4 with acid, and 2-chloronicotinic acid is obtained. The method has the advantages of mild reaction conditions, no use of dangerous raw materials, environmental protection, simple post-treatment operation, high yield and purity, and suitableness for industrial production.

The invention discloses a 1, 3, 4-tris (3-mercaptobutyl carbonyl propyl)-6-(3-methyl butyl carbonyl propyl) glycoluril compound and a preparation method and application thereof.The 1, 3, 4-tris (3-mercaptobutyl carbonyl propyl)-6-(3-methyl butyl carbonyl propyl) glycoluril compound has a rigid glycoluril parent nucleus, and has the advantages that the rigidity of the glycoluril parent nucleus is greatly improved, and the yield of the 1, 3, 4-tris (3-mercaptobutyl carbonyl propyl)-6-(3-methyl butyl carbonyl propyl) glycoluril compound is increased; three nitrogen atoms on a glycoluril parent nucleus are connected with three 3-mercapto butyl carbonyl propyl flexible long chains with reactive mercapto terminals through ester bonds, and another nitrogen atom is connected with a 3-methyl butyl carbonyl propyl flexible long chain. Based on the chemical bond action of a rigid node of a rigid glycoluril parent nucleus, a flexible long chain, a sulfydryl group and an epoxy resin epoxy group, an epoxy resin composition prepared by using the compound as a curing agent has relatively good fracture toughness and impact resistance, and keeps rigidity and heat resistance.

The invention provides a well wall stabilizer for drilling fluid as well as a preparation method and application thereof. The invention provides a well wall stabilizer for drilling fluid. The raw materials of the stabilizer comprise cucurbituril and cyclodextrin, the cucurbituril is an annular cage compound formed by connecting 2n methylene bridges with n glycolurils, and n is selected from 5-20. Wherein cucurbituril is called Q [n] for short. The invention provides a preparation method of a stabilizer. The preparation method of the stabilizer comprises the step of mixing water, cucurbituril, an alkali supply agent, cyclodextrin, a surfactant, organic silanol and a salt bridging agent to obtain the stabilizer. The invention provides the drilling fluid well wall stabilizer prepared from cucurbituril and cyclodextrin, the prepared drilling fluid well wall stabilizer is used in drilling fluid, the rolling dispersion recovery rate of the drilling fluid can reach 65% or above, and the membrane efficiency of the drilling fluid can reach 17% or above.

The invention discloses a glycoluril-based amino-terminated latent epoxy curing agent as well as a preparation method and application thereof. The curing agent has a 3a, 6a-substituted glycoluril core skeleton, intermolecular hydrogen bonds are destroyed through substituent Y of nitrogen atoms on a glycoluril ring so as to adjust the melting point (40-180 DEG C), and then the incubation period and the curing initiation temperature are accurately regulated and controlled; meanwhile, the performance of a cured product is regulated and controlled through a diamine group X connected with bridgehead carbon atoms. The preparation method comprises the following three steps: oxidizing diethyl tartrate, condensing the oxidized diethyl tartrate and urea to synthesize diethyl glycoluril, carrying out N-alkylation modification, and carrying out amine ester exchange to introduce double-end amino groups. The curing agent can solve the contradiction that the heat resistance and toughness of the existing amine curing agent are difficult to consider at the same time, realizes room-temperature long-acting latent-medium and high-temperature rapid curing, is particularly suitable for preparing a single-component epoxy adhesive, and meets the requirements of high-end scenes such as electronic packaging and aviation structure bonding.

This application provides a glycourea polythiol curing agent composition, relating to the field of polymer materials technology. The composition comprises a mixture of a glycourea trithiol compound and a glycourea dithiol compound consisting of positional isomers. This composition, used as a curing agent for epoxy resin compositions, can form a highly uniform cross-linked network structure, enabling the cured epoxy resin composition to simultaneously possess a high glass transition temperature, high flexural modulus, and ultra-high fracture toughness, achieving an excellent balance between rigidity and toughness.

The invention discloses a 1, 3, 4-tri (3-hydroxy propyl)-6-(3-methyl butyl carbonyl propyl) glycoluril compound and a preparation method and application thereof, and belongs to the field of materials.The preparation method comprises the steps that isovaleric acid reacts with thionyl chloride to prepare an isovaleryl chloride solution; the preparation method comprises the following steps: mixing 1, 3, 4, 6-tetra (3-hydroxy propyl) glycoluril with triethylamine, and carrying out acylation reaction on the mixture and an isovaleryl chloride solution at room temperature to obtain the 1, 3, 4-tri (3-hydroxy propyl)-6-(3-methyl butyl carbonyl propyl) glycoluril compound. According to the preparation method, acylation of one hydroxyl group in a 1, 3, 4, 6-tetra (3-hydroxypropyl) glycoluril molecule is realized, and the prepared compound can be used as a key intermediate for preparing a mercapto glycoluril derivative.

The invention discloses a photosensitive resin composition. The photosensitive resin composition comprises a thermosensitive compound (b), a coloring agent (d) and a thermal cross-linking agent (e). Wherein the heat-sensitive compound (b) includes a compound containing at least two phenolic hydroxyl groups, the colorant (d) has a maximum absorption wavelength in any range of 490-800 nm, the absorbance at the maximum absorption wavelength is Absmax, the ratio of the absorbance Abs365 at 365 nm to Absmax is 0.1% or more and less than 40%, and the thermal crosslinking agent (e) includes 1, 3-bis (methoxymethyl) urea, 1, 3-bis (methoxymethyl)-4, 4, 6-trimethyl-1, 3-bis (methoxymethyl)-1, 3-bis (methoxymethyl)-1, 3-bis (methoxymethyl)-1, 3-bis (methoxymethyl)-1, 3-bis (methoxymethyl)-1, 3-bis (methoxymethyl)-1, 3-bis (methoxymethyl)-1, 3-bis (methoxymethyl)-1, 3- The composition is one or a combination of more of 4, 5-diethoxy-1, 3-bis (hydroxymethyl)-2-imidazolidinone, 4, 5-dimethoxy-2-imidazolidinone, 4, 5-diethoxy-1, 3-bis (hydroxymethyl)-2-imidazolidinone and tetramethoxymethyl glycoluril. According to the photosensitive resin composition, the light transmittance within the wavelength range of 350-450 nm is not obviously reduced before exposure, so that the exposure sensitivity is prevented from being reduced. Meanwhile, after high-temperature curing, the cured film has excellent shading performance within the wavelength range of 350-780 nm through the change of the structure of the thermosensitive compound and the combination of the thermosensitive compound and two or more dyes or pigments, namely, the cured film has the optical density larger than or equal to 1.0.

Disclosure herein relates to, inter alia, inventive cucurbituril compounds and novel methods of preparing thereof using a glycoluril compound having the formula (II), a glycoluril compound having the formula (II′), a glycoluril bis-ether of formula (III), a glycoluril dimer of formula (IV), a glycoluril tetramer compound of formula (V), and Sodium 4,4′-(1,4-phenylenebis(oxy))bis(butane-1-sulfonate, which result in significantly improved purity and yield of the intermediates and of the final products.

Provided is a photosensitive resin composition containing: (A) a photopolymerizable compound having an ethylenically unsaturated group, and an acidic substituent; (B) a compound having an ethylenically unsaturated group, and an isocyanurate ring or glycoluril ring; and (C) a maleimide resin having two or more N-substituted maleimide groups, and a group including a condensed ring composed of an aromatic ring and aliphatic ring. Also provided are a photosensitive resin film using said photosensitive resin composition, a printed wiring board, a production method therefor, and a semiconductor package.

The application discloses a 1,3,4-tri(3-hydroxypropyl)-6-(3-methylbutyryloxypropyl) glycoluril compound and a preparation method and application thereof, and belongs to the material field. The preparation method is characterized in that isovaleric acid is reacted with dichlorosulfide to prepare an isovaleryl chloride solution; 1,3,4,6-tetra(3-hydroxypropyl) glycoluril is mixed with triethylamine, and acylation reaction is carried out with the isovaleryl chloride solution at room temperature to obtain the 1,3,4-tri(3-hydroxypropyl)-6-(3-methylbutyryloxypropyl) glycoluril compound. The preparation method realizes acylation of one hydroxyl group in a 1,3,4,6-tetra(3-hydroxypropyl) glycoluril molecule, and the prepared compound can be used as a key intermediate and is used for preparing a mercapto glycoluril derivative.

The invention provides a photoresist composition, a photoetching patterned multilayer body and a preparation method of the photoetching patterned multilayer body, and relates to the field of photoresist. The photoresist composition is prepared from the following raw materials in parts by weight: 100 parts of alkali-soluble resin, 0.5 to 20 parts of onium salt compound, 3 to 50 parts of glycoluril compound, 0.01 to 1.0 part of alkaline compound, 0.01 to 1.0 part of acidic compound and 100 to 5000 parts of organic solvent, at least part of anions in the onium salt compound are fluoroalkyl sulfonate anions; n in the glycoluril compound is substituted by at least one hydroxyalkyl group, alkoxy group and alkyl group. The crosslinking activity of the glycoluril compound is generally low, and when the glycoluril compound with low crosslinking activity is combined with an onium salt compound serving as an acid generator for use, the trailing defect generated when the photoresist forms a pattern on the anti-reflection layer can be effectively improved, and a high resolution can be obtained.

The application discloses a 1,3,4-tris (3-mercapto butyryloxy propyl) -6- (3-methyl butyryloxy propyl) glycoluril compound and a preparation method and application thereof, and the 1,3,4-tris (3-mercapto butyryloxy propyl) -6- (3-methyl butyryloxy propyl) glycoluril compound has a rigid glycoluril nucleus, three 3-mercapto butyryloxy propyl flexible long chains with reactive thiol terminals are connected to the three nitrogen atoms of the glycoluril nucleus through ester bonds, and a 3-methyl butyryloxy propyl flexible long chain is connected to another nitrogen atom. Based on the chemical bond effect of the rigid node, the flexible long chain, the thiol and the epoxy group of the epoxy resin in the rigid glycoluril nucleus, the epoxy resin composition prepared by using the compound as a curing agent has good fracture toughness and impact resistance, and rigidity and heat resistance are maintained.

Disclosed are deuterated glycoluril tetramer compounds having aryl groups incorporated at both ends represented by formula (1), pharmaceutical compositions containing the compounds. The deuterated compounds are useful for antagonizing clinically used non-depolarizing muscle relaxants, and have significantly superior antagonistic activity against rocuronium and vecuronium to sugammadex at the same dose, and significantly superior antagonistic activity against cisatracurium and rocuronium to a non-deuterated control molecule.