- Synthesis method of thermosensitive color developing agent 4, 4'-sulfonyl bis [2-(2-propenyl)] phenol
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The invention provides a synthesis method of a thermosensitive color developing agent 4, 4'-sulfonyl bis [2-(2-propenyl)] phenol, which comprises the following step: directly heating and rearranging 4, 4'-diallyl diphenyl sulfone in an organic solvent under the action of a catalyst to obtain the 4, 4'-sulfonyl bis [2-(2-propenyl)] phenol. In the process of preparing 4, 4'-sulfonyl bis [2-(2-propenyl)] phenol, a Lewis acid catalyst is used, so that a high-temperature reaction at 200 DEG C or above can be avoided, safety accidents are greatly reduced, energy is saved, consumption is reduced, andequipment investment is greatly reduced. The catalysts zinc chloride, aluminum trichloride, ferric trichloride and titanium tetrachloride used in the preparation process of the 4, 4'-sulfonyl bis [2-(2-propenyl)] phenol are low in cost and convenient to post-treat. In the process of preparing the 4, 4'-sulfonyl bis [2-(2-propenyl)] phenol, the use of a high-boiling-point solvent and heat conduction oil can be avoided, and the production cost is greatly reduced.
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Paragraph 0021-0030
(2020/06/29)
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- Synthetic method of thermosensitive color developing agent 4,4'- sulfonyl bis [2-(2-propenyl)] phenol
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The invention discloses a synthetic method of a thermosensitive color developing agent 4,4'- sulfonyl bis [2-(2-propenyl)] phenol; 4, 4, 4'- diallyl diphenyl sulfone is directly heated and reacted ina solvent under the action of a chelating agent to prepare the 4, 4'- sulfonyl bis [2-(2-propenyl)] phenol; and the method is simple and convenient to operate, low in cost, less in three wastes, greenand environment-friendly, and has a good industrial application prospect. According to the synthetic method of the thermosensitive color developing agent 4,4'- sulfonyl bis [2-(2-propenyl)] phenol, the yield is 92.5-96.2%, and the purity is 97.5-98%, optimally, the yield is 95-96.2%; and the chelating agent used in the method is environment-friendly glycine diacetic acid, and is low in cost and biodegradable.
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Paragraph 0017-0021
(2019/07/04)
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- PROCESS FOR PRODUCING ALLYL-SUBSTITUTED BISPHENOL COMPOUND
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The present invention relates to a process for producing an allyl-substituted bisphenol compound including a step of subjecting a diallyl etherified bisphenol compound represented by the following general formula (I) to a thermal rearrangement reaction in the presence of a specific phosphine compound [in the formula, A represents a single bond, —SO2—, —S—, —O—, a divalent group represented by the following formula (i-1), or a divalent group represented by —CY1Y2—(Y1 and Y2 each independently represent hydrogen, a linear, branched, or cyclic alkyl group having 6 or less carbon atoms, a phenyl group, or an aralkyl group having 7 or 8 carbon atoms), B1 and B2 each independently represent a linear, branched, or cyclic alkyl group having 6 or less carbon atoms, an allyl group, a phenyl group, or an aralkyl group having 7 or 8 carbon atoms, and n1 and n2 each independently represent an integer from 0 to 2,
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Paragraph 0070; 0071; 0072; 0073; 0074-0079; 0080
(2018/05/16)
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- Bisphenol-based epoxy compound using thiol-ene reaction and method for preparing the same, and composite of organic-inorganic materials comprising a cured product thereof and method for preparing the composite
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The present invention relates to a bisphenol-based epoxy compound having an alkoxysilylalkyl-S-alkyl group and a method for preparing the same, a composite of organic-inorganic materials comprising the cured product and a method for preparing the composite. The novel bisphenol-based epoxy compound can provide a composite which shows improved thermal resistance and thermal expansion properties and has excellent hardness when being used for manufacturing high-integration and high-performance electronic components such as a next-generation semiconductor substrate and PCB.COPYRIGHT KIPO 2017
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- METHOD OF CONSISTENTLY PRODUCING DIALLYLBISPHENOLS
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The purpose of the present invention is to provide a method of consistently producing high-quality diallylbisphenols with high yields from bisphenols. This method involves steps (1) through (3) below, and enables the consistent production of diallylbisphenols from bisphenols. (1) A step for reacting allyl halides and bisphenols or alkali metal salts thereof in a cellosolve solvent in the presence or absence of basic alkali metal salts, (2) a step for separating inorganic salt by-products from a reaction solution obtained in step (1), and (3) a step for heating and subjecting to a rearrangement reaction the reaction solution obtained in step (2).
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Paragraph 0113-0116
(2017/01/23)
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- METHOD FOR PRODUCING 3,3'-DIALLYL-4,4'-DIHYDROXYDIPHENYL SULFONE
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PROBLEM TO BE SOLVED: To provide a method for producing 3,3'-diallyl-4,4'-dihydroxydiphenyl sulfone in high purity and high yield, the sulfone having, as a heat-sensitive recording material, little background fogging after color recording and being a developer having excellent heat resistance. SOLUTION: Provided is a method for producing 3,3'-diallyl-4,4'-dihydroxydiphenyl sulfone by an intramolecular rearrangement reaction of 4,4'-diallyloxydiphenyl sulfone by heating to 200°C or higher in the presence of a catalytic amount of a heterocyclic compound and an amine compound. COPYRIGHT: (C)2015,JPOandINPIT
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Paragraph 0013
(2016/12/16)
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- Investigations of thiol-modified phenol derivatives for the use in thiol-ene photopolymerizations
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Thiol-ene photopolymerizations gain a growing interest in academic research. Coatings and dental restoratives are interesting applications for thiol-ene photopolymerizations due to their unique features. In most studies the relative flexible and hydrophilic ester derivative, namely pentaerythritoltetra(3-mercaptopropionate) (PETMP), is investigated as the thiol component. Thus, in the present study we are encouraged to investigate the performance of more hydrophobic ester-free thiol-modified bis-and trisphenol derivatives in thiol-ene photopolymerizations. For this, six different thiol-modified bis-and trisphenol derivatives exhibiting four to six thiol groups are synthesized via the radical addition of thioacetic acid to suitable allyl-modified precursors and subsequent hydrolysis. Compared to PETMP better flexural strength and modulus of elasticity are achievable in thiol-ene photopolymerizations employing 1,3,5-triallyl-1,3,5-triazine-2,4,6-trione (TATATO) as the ene derivative. Especially, after storage in water, the flexural strength and modulus of elasticity is twice as high compared to the PETMP reference system.
- Reinelt, Sebastian,Tabatabai, Monir,Fischer, Urs Karl,Moszner, Norbert,Utterodt, Andreas,Ritter, Helmut
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p. 1733 - 1740
(2014/08/18)
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- COLOR DEVELOPING COMPOSITION CONTAINING MOLECULAR COMPOUND, AND RECORDING MATERIAL
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Provided is a color-developing composition containing a molecular compound which has as a component compound a compound represented by formula (I) [wherein Y represents a C1-C12 hydrocarbon group which is chained or branched and saturated or unsaturated, or a C1-C8 hydrocarbon group which is chained or branched, saturated or unsaturated and has an ether or thioether bond; R1, R2, R3 and R4 each independently represent a C1-C6 alkyl group or C2-C6 alkenyl group; n, p, q and r each represents any integer of 0 to 4; and m represents any integer of 0 to 2]. Also provided is a recording material with a sufficient color-forming sensitivity, superior storage stability, and especially with an extremely little background fogging in a heat resistance test.
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- METHOD FOR PRODUCING 3,3';-DIALLYL-4,4';-DIHYDROXYDIPHENYLSULFONE
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The present invention is characterized by subjecting 4,4'-diallyloxydiphenyl sulfone to a rearrangement reaction under microwave irradiation, preferably in molten state, to produce objective 3,3'-diallyl-4,4'-dihydroxydiphenyl sulfone efficiently in a short time, in high yield and in high purity. Further preferably, by carrying out said reaction in substantially oxygen-free atmosphere in the presence of at least one compound selected from a group consisting of an antioxidant, an organic basic compound and a chelate compound, the above-described object can be attained in more preferable manner.
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Page/Page column 6-7
(2008/06/13)
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- Novel diepoxide derivatives of diallyl phenolics
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The present invention relates to the preparation of ethers and esters of diallylphenols and the epoxidation of the diallyl moiety to provide bis-epoxide ether and ester intermediates useful in the preparation of epoxy resins.
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Page/Page column 4
(2010/02/11)
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- Salicylic acid derivatives
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The heat-sensitive recording material disclosed comprises a colorless or pale colored dyestuff precursor, one or more salicylic acid derivative of the formula (1) or metal salt of the derivative and an aliphatic amide compound having 18?60 carbon atoms in molecular structure, and is excellent in thermal response and preservation stability of white portions and images. STR1 wherein X1 and X2 are a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aralkyl group or an aryl group, Y1 and Y2 are an oxygen atom or a sulfur atom, R1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, and R2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group.
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- Hydrogen Bonding. Part 18. Gas-Liquid Chromatographic Measurements for the Design and Selection of some Hydrogen Bond Acidic Phases Suitable for Use as Coatings on Piezoelectric Sorption Detectors
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A number of involatile liquids based on 4,4'-isopropylidenediphenol (bisphenol-A) or other bisphenols have been prepared as candidate coatings for piezoelectric sorption detectors.The liquids have been used as GLC stationary phases, and gas-liquid partition coefficients of a series of solutes have been obtained for these phases.Application of the linear solvation energy equation below has revealed that two particular liquids (8 and 9) possess very large hydrogen bond acidities coupled to rather small hydrogen bond basicities, and hence might be suitable as coatings with selectivity towards solutes that are hydrogen bond bases.One other compound (10) is not suitable as a coating because it is a solid at room temperature, but it has very considerable hydrogen bond acidity, and may be suitable as a novel GLC stationary phase.In the linear solution energy equation above, K is the gas-liquid partition coefficient for a series of solutes on a given phase, and the explanatory variables R2, ?H2, αH2, βH2 and log L16 are solute parameters that we have described before.A term by term analysis of the equation can be used to evaluate quantitatively how specific solute-solvent interactions influence the magnitude of the various log K values.
- Abraham, Michael H.,Hamerton, Ian,Rose, John B.,Grate, Jay W.
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p. 1417 - 1423
(2007/10/02)
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- Phenolic compound, preparation thereof and recording material employing same
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A phenolic compound represented by the formula: STR1 a process for producing it and a recording material comprising a support bearing a heat- or pressure-sensitive color-forming layer containing the phenolic compound and a leuco dye.
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