107 results about "Diol" patented technology

Provided is a polymerizable composition including (a) a polymerizable component comprising a diol bis(allyl carbonate) and / or a pre-polymer thereof; and (b) a polymerization initiator component including: (i) a di(C6-C10 alkyl) peroxydicarbonate, and (ii) an organic peroxide having one peroxy, one peroxycarbonate, or one peroxybenzoate group and a 1,1-dimethylalkyl group bonded to a peroxy oxygen, where (ii) comprises a molecular weight ranging from 200 to 250 g / mole, the polymerization initiator (b) is free of diisopropyl peroxydicarbonate, (i) comprises an amount ranging from 4.87% to 7.90% by weight relative to the total solids of the polymerizable composition and (ii) comprises an amount within the range defined by the following formula: (4.406X2−0.592X+0.021)≤Y≤(0.726X2−0.121X+0.009) where X corresponds to the weight fraction of (i) and Y corresponds to the weight fraction of (ii). Also provided is a method of making an optical article from the polymerizable composition.

The invention discloses a preparation method of 1, 5-hexadiene-3, 4-diol, which is characterized in that acrolein is used as a raw material, and the 1, 5-hexadiene-3, 4-diol is prepared by reductive coupling reaction in the presence of an ammonium chloride aqueous solution and a zinc powder catalyst. According to the method, the yield reaches up to 92% or above, compared with an existing synthesis method, reaction operation is simplified, the reaction yield is increased, and a novel reduction method is provided; the separation and purification method is simple and efficient, the product quality is high, the commercialized use requirement can be met, and large-scale production is achieved.

The invention discloses a hot-melt polyester with high washing resistance, which is prepared from the following raw materials: a binary acid composition, a dihydric alcohol composition, an antioxidant and a catalyst, and the molar ratio of the binary acid composition to the dihydric alcohol composition is 1: (1.8-2.2). According to the invention, the hydrophobicity and structural stability of polyester can be obviously improved, so that the reflective layer is not easy to peel off in the washing process, and good bonding strength and retroreflection coefficient are maintained after washing. The retroreflection coefficient is 180-300 cd.lx <-1 >. M <-2 > and the bonding strength is 1.2-1.8 MPa after the reflective material is washed for 50 times by an ISO 15797-part4 method, so that the reflective material meets the requirements of keeping high washing resistance and high brightness from a common mark to a high-end protective reflective material, and has a wide application prospect.

The invention relates to a polyester material, a preparation method thereof and an antibacterial product. The polyester material comprises a polyester main chain and antibacterial peptide; the polyester main chain is prepared from the following raw materials: dibasic acid and / or dibasic ester and dihydric alcohol; the dibasic acid comprises terephthalic acid, and the dibasic ester comprises terephthalic acid ester; the antibacterial peptide is prepared through a ring-opening polymerization reaction of amino-acid ester-N-carboxy anhydride. According to the polyester material, the heat resistance and the optical performance are further improved while good antibacterial performance is achieved.

The presently claimed invention relates to an alkaline composition for cleaning a substrate comprising i) copper or copper alloy and ii) cobalt or cobalt alloy, the composition comprising: a) at least one pH adjustor selected from diglycolamine, 4,4-diethoxy-N,N-dimethyl-1-butanamine, 3-dimethylaminopropan-1-ol, dimethylaminoethoxyethanol, N,N-dimethylisopropanolamine, ethylethanolamine, N-methyldiethanolamine, 2-(2-(methylamino)ethoxy)ethanol, 3-(methylamino)propane-1,2-diol, 2-[2-[2-(2-methoxy- ethoxy)ethoxy]ethoxy]ethylamine, 2-[2-(2-aminoethoxy)-ethoxy]-ethanol, N-butyldiethanolamine, diisopropanolamine, N-methyldiisopropanolamine, monoethanolamine, 3-dimethylamino-1,2-propandiol, 2- amino-1-butanol, 2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethanol, prolinol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-3-pyrrolidinol, 2-amino-2-methyl-1-propanol, N,N-dimethylethanolamine, butylethanolamine, diethylethanolamine, 3-methoxypropylamine, 4-(2-hydroxyethyl)morpholine, 4-(dimethylamino)cyclohexanol, 2-amino-2-methyl-1, 3-propanediol, or diisopropylamine; b) at least one complexing agent selected from C2 to C12 hydrocarbon having at least two sulfonic acid or carboxylic acid groups; c) at least one polymeric dispersing agent having a weight average molecular weight ≥ 1000 g / mol; and d) a solvent comprising water.

The object of the present invention is to provide a resin composition that is heat-curable or photocurable, alkali-soluble, has a low dielectric constant and dielectric loss tangent of the cured product, and exhibits high adhesion and glass transition temperature, as well as excellent insulation reliability. [Solution] A resin composition is used that contains a compound represented by the following formula (1) and a compound containing one or more epoxy groups in one molecule. TIFF2026103975000012.tif29170 (In formula (1), each X independently represents a residue of an aromatic or aliphatic tetracarboxylic anhydride with the carboxyl group removed. Y represents a divalent residue of a diol with the hydroxyl group removed. Each Z independently represents a residue of a functional group containing a radically polymerizable double bond. n is the average number of repeating units and is a real number between 0.1 and 20.)

Provided is a method for preparing a diol. In the method, a saccharide and hydrogen as raw materials are contacted with a catalyst in water to prepare the diol. The employed catalyst is a composite catalyst comprised of a main catalyst and a cocatalyst, wherein the main catalyst is a water-insoluble acid-resistant alloy; and the cocatalyst is a soluble tungstate and / or soluble tungsten compound. The method uses an acid-resistant, inexpensive and stable alloy needless of a support as a main catalyst, and can guarantee a high yield of the diol in the case where the production cost is relatively low.

The application belongs to the technical field of compound preparation, and discloses a preparation method of (1'S, 2'S)-eugenol glycerol 3'-O-beta-D-glucopyranoside. The method is characterized in that: a phenolic hydroxyl group allyl compound protected by a benzyl group is subjected to O-glycosylation reaction with a D-glucopyranosyl donor protected by an acetyl group, so as to obtain an olefin type protected glycoside intermediate which retains a side chain carbon-carbon double bond; then, asymmetric dihydroxylation reaction is performed on the intermediate, so as to construct a target vicinal diol chiral structure; finally, the acetyl protecting group of the sugar hydroxyl group and the benzyl protecting group of the phenolic hydroxyl group are sequentially removed, so as to obtain the target compound. The preparation method of (1'S, 2'S)-eugenol glycerol 3'-O-beta-D-glucopyranoside is characterized in that: the glycoside bond is constructed before dihydroxylation, which is beneficial to reducing the competition reaction of multiple hydroxyl groups and realizing the preparation of the target compound.

The invention discloses a method for producing bio-based dihydric alcohol. According to the method, bio-based methyl 2-tetrahydrofuroate, tetrahydrofurfuryl propionate and methyl 2-(tetrahydrofuran-2-yl) acetate are used as precursors for dihydric alcohol synthesis, Cu-Ga-Mn / SiO2 or Cu-Ga-Mn / SiO2-Al2O3 is used as a hydrogenation catalyst, cyclic ether ester structures are synchronously activated in a fixed bed reactor, ester group hydrogenation and tetrahydrofuran ring opening are synergistically carried out, and the high-purity tetrahydrofuran is obtained. The reaction path is shortened. The hydrogenation catalyst is prepared by combining a sol-gel method and hydrothermal synthesis through roasting and reduction, active components are uniformly distributed, and the hydrogenation catalyst has excellent hydrogenation activity and structural stability.

The utility model relates to dihydric alcohol ether micro -tube type reactor technical field, and disclose a dihydric alcohol ether micro -tube type reactor, including the tubular reactor body, the both sides of tubular reactor body surface all are connected with the connecting port for feeding, the inner chamber of tubular reactor body is provided with the auxiliary block of reinforcement fluid chaos mixing effect, the utility model discloses in the routine use of tubular reactor body, can be under the action of liquid heat exchanger body, pressurizing pump, heat exchange pipe and liquid delivery pipe, the heat of tubular reactor body inner chamber is heat exchanged, reaches the effect of temperature control to reduce the possibility of by -product production in the reaction due to local overheating, and can be under the action of pressurizing pump, can make the pressure change of pressurizing chamber inner chamber, thereby make the vibration piece pressure vibrate, and then reach the effect of vibration and drop viscous material, reduce the probability of tubular reactor body block, improve the practicality of this device.

Provided is a thermoplastic resin composition with excellent optical properties, having high fluidity and good moldability without compromising properties of optical resin compositions, and having a compositional makeup that can prevent gelatinization (increase in molecular weight). The present invention provides a polycarbonate resin including: a constituent unit (A) derived from a diol represented by the formula (1) below; and a constituent unit (B) represented by the formula (2) below and / or a constituent unit (C) represented by the formula (3) below:

A hydrophilic compound is formed by reacting an esterified itaconic acid with an unsaturated organic acid or an unsaturated organic alcohol through a free radical reaction. The esterified itaconic acid is formed by reacting an itaconic acid with a C4-12 linear diol through an esterification reaction. The unsaturated organic acid is CnH2n-x(COOH)x, wherein n is an integer of 2 to 8, and x is an integer of 1 to 3. The unsaturated organic alcohol is CmH2m-y(OH)y, wherein m is an integer of 3 to 8, and y is an integer of 1 to 3.

This invention provides a method for manufacturing a fluoropolymer with minimal deviation in weight-average molecular weight per batch. The method for manufacturing the fluoropolymer of this invention is characterized by comprising the following steps: a fluoropolymer synthesis step, wherein a diol represented by formula (3) is reacted with at least one selected from unsaturated carboxylic acids, esters of the unsaturated carboxylic acids, acyl halides of the unsaturated carboxylic acids, and anhydrides of the unsaturated carboxylic acids to obtain a composition comprising a fluoropolymer represented by formula (4) as the main reactant and a fluoropolymer represented by formula (5) as a by-reactant; a fluoropolymer purification step, wherein the fluoropolymer represented by formula (5) is removed from the composition, and the content of the fluoropolymer represented by formula (5) is 1500 ppm or less, expressed as a mass fraction (parts per million) based on the fluoropolymer represented by formula (4); and a polymerization step, wherein the composition after the fluoropolymer purification step is subjected to a polymerization reaction to produce a fluoropolymer comprising a repeating unit represented by formula (1) and a repeating unit represented by formula (2). In equations (1), (2), (3), (4), and (5), R 1 R 2 Each of the following is independently a hydrogen atom, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, or tert-butyl, R 3 R 4 Each is independently a hydrogen atom, methyl or ethyl, R 5 R is a hydrogen atom or a trifluoromethyl group. 6 It can be a hydrogen atom, a chlorine atom, a methyl group, or a trifluoromethyl group.

To provide a composition containing a siloxane block-containing diol compound that is easy to manufacture industrially.A composition containing a siloxane block-containing diol compound, whereinthe siloxane block-containing diol compound is represented by the following formula (I):whereinR1 and R2 are each independently an alkyl group having 1 to 20 carbon atoms which may have a substituent, or an aryl group having 6 to 30 carbon atoms which may have a substituent,m is an integer of 1 to 25,n is an integer of 3 to 200, andXs each independently represent any of the following formulae (I1) to (I6):

The invention provides a water-based UV (ultraviolet) resin which comprises the following components in parts by weight: 5-20 parts of diisocyanate; 35 to 50 parts by weight of dihydric alcohol; 0.2-5 parts by weight of a chain extender; 1-20 parts by weight of an end-capping reagent; 30-50 parts by weight of a solvent; and 0.01 to 0.1 part by weight of a catalyst. The invention also provides a preparation method of the water-based UV resin and elastic paint prepared from the water-based UV resin. The elastic paint prepared from the water-based UV resin disclosed by the invention has a thick hand feeling and high tolerance.

We provide a polyester resin capable of highly satisfying the balance of mechanical properties, heat resistance, optical properties, and moldability. The following formula (1) A polyester resin is formed using a diol unit (A) comprising a first diol unit (A1) represented by (wherein A1 and A2 independently represent an alkylene group, n1 and n2 independently represent an integer greater than or equal to 0, R1 and R2 independently represent a substituent, m1 and m2 independently represent an integer from 0 to 6, and A3 represents a direct bond (single bond) or an alkylene group), a second diol unit (A2) having a diphenylfluorene backbone, and a third diol unit (A3) having an alkylene backbone, and a dicarboxylic acid unit (B) comprising a dicarboxylic acid unit (B1) having a condensed polycyclic arene ring backbone, wherein the ratio of the first diol unit (A1) is 5 to 60 mol% of the total diol unit (A), and the ratio of the dicarboxylic acid unit (B1) is of the total dicarboxylic acid unit (B). Adjust to 50 mol% or more.

The application provides a preparation method of furanone, comprising the following steps: S1, using diethyl ether and 1,2-ethylene glycol as raw materials, a Lewis acid as a catalyst, and a peroxide as an initiator, and reacting to obtain 2,5-dimethyl-3,4-diol tetrahydrofuran; S2, dehydrogenating and oxidizing the 2,5-dimethyl-3,4-diol tetrahydrofuran to obtain furanone. The preparation method of furanone can effectively solve the problems of long process flow, difficult-to-obtain raw materials, complex operation, many by-products, and low product yield in the synthesis process of furanone.

This invention discloses a method for synthesizing 3-oxa[3.1.1]spiropropane, belonging to the fields of organic synthetic chemistry and medicinal chemistry. This method is the first to introduce oxygen atoms into the high-strength skeleton of [3.1.1]spiropropane, successfully synthesizing the 3-oxa[3.1.1]spiropropane molecule. The specific synthetic route is as follows: starting with 3,3-bis(bromomethyl)oxacyclobutane, the 3-oxabicyclo[3.1.1]heptane diol skeleton is constructed sequentially via nucleophilic substitution with diethyl malonate, reduction, and intramolecular cyclization. Then, oxidation and Barton decarboxylation iodination are performed to obtain the key intermediate 1,3-diiodo-3-oxabicyclo[3.1.1]heptane, which is finally reacted with an organolithium reagent to obtain the target product. This invention fills a technological gap in the synthesis of heteroatom-substituted spiroalkyl, providing a key precursor for the subsequent development of its free radical bifunctionalization reaction and the construction of structurally diverse 3-oxabicyclic [3.1.1]heptane dominant skeletons. It has important application prospects in drug design, especially as a bio-electroisoster of meta-substituted aromatics.

The invention provides a method and a system for rectifying and purifying mixed dihydric alcohol, and particularly relates to a method and a system for rectifying and purifying 1, 4-butanediol (BDO) and 2-alkyl-1, 4-butanediol. According to the invention, a dividing wall rectifying tower is adopted to directly obtain a light component methanol aqueous solution, a butanol aqueous solution and a material rich in 1, 4-butanediol (BDO), 2-alkyl-1, 4-butanediol and heavy component impurities, and a dividing wall separating tower is adopted to directly obtain 1, 4-butanediol (BDO) and 2-alkyl-1, 4-butanediol with the concentration of 99.9% or above respectively; according to the rectification purification method and system, low-energy-consumption and high-efficiency separation of 1, 4-butanediol (BDO) and 2-alkyl-1, 4-butanediol from methanol, butanol, water, tar and other impurities can be achieved, and 1, 4-butanediol (BDO) with the concentration of 99.9% or above and 2-alkyl-1, 4-butanediol with the concentration of 99.9% or above are obtained.

An object of the present invention is to provide a novel diol compound using a compound derived from a bioproduct.SOLUTION: The present invention is a diol compound represented by the following formula (1). (In the formula, R1 represents a single-bond, an alkylene group having 1 to 8 carbon atoms, or an arylene group having 6 to 10 carbon atoms.). ) SELECTED DRAWING: Figure 1

The present application relates to the technical field of cooling liquid, and more particularly to a high-performance cooling liquid for new energy vehicles and a preparation method thereof.The high-performance cooling liquid for new energy vehicles comprises, by weight fraction, 35-50 parts of dihydric alcohol, 45-75 parts of deionized water, 0.5-3 parts of corrosion inhibitor, 0.03-0.1 parts of scale inhibitor, 0.05-0.2 parts of defoaming agent, and 0.1-0.5 parts of antioxidant.The new energy vehicle cooling liquid of the present application, by adding corrosion inhibitor and scale inhibitor, not only endows the cooling liquid with excellent metal corrosion resistance, scale resistance and antibacterial properties, but also maintains stable low conductivity, effectively improves the comprehensive protection effect of the cooling liquid, and has good application and promotion prospects.

This invention belongs to the field of organic synthesis technology, specifically relating to a method for synthesizing and applying an organoboroester intermediate. The method includes: stirring compound A in solvent 1 at low temperature under an inert atmosphere, and reacting it with compound B (OR) under the action of a strong base. 3 3. After stirring at room temperature, the mixture is then acidified to generate intermediate compound B; intermediate compound B reacts with R under the action of a drying agent. 2 (OH) n The reaction at room temperature yields an organoborolate intermediate compound (II); wherein the molar ratio of compound A to base is 1:1.0 to 1:1.5; and compounds A and B (OR 3 The molar ratio of compound B to R is 1:1.5 to 1:3.0. 2 (OH) n The molar ratio is 1:1.0 to 1:1.5; X 1 R is a hydrogen atom or a nitro group. 1 R is any one of hydrogen atom, C1-C20 alkyl group, substituted or unsubstituted phenyl group, or substituted or unsubstituted thiophene group. 2 (OH) n (n=1 or 2) is a monohydric alcohol or a dihydric alcohol; the desiccant is any one of anhydrous sodium sulfate, anhydrous magnesium sulfate, silica gel, and anhydrous calcium chloride. The above method is non-toxic, environmentally friendly, and produces highly reactive products.

The present invention relates to a composition comprising: (a) at least one N-acyl amino acid ester; (b) at least one diol having at least one carbon chain comprising 3 or more carbon atoms; and (c) at least one polyglyceryl fatty acid ester having an HLB value of more than 5.0 and less than 14.0, wherein the amount of the (b) diol having at least one carbon chain comprising 3 or more carbon atoms in the composition is more than 10% by weight, preferably 15% by weight or more, and more preferably 20% by weight or more, relative to the total weight of the composition. The composition according to the present invention is stable and can provide sufficient moisturizing effects, non-stickiness, and a glowy appearance.

Water-based architectural coating compositions including a multifunctional additive including a hydroxamic acid and one or more diols, wherein the weight ratio of the hydroxamic acid to diols is from 1:9 to 1:19. The coating compositions are adequately preserved with reduced or no amounts of traditional biocides such as isothoaizolinones. Also disclosed are methods of preserving water-based coating compositions using the multifunctional additive and coated articles of the disclosed coating compositions coated on a substrate.

The present invention can provide a thermoplastic resin that contains a structural unit (A) derived from a diol represented by general formula (1), a structural unit (B) derived from a diol represented by general formula (2), and a structural unit (C) derived from a diol represented by general formula (3). (In general formula (1), Re and Rf each independently represent a hydrogen atom, a halogen atom, and so forth; Y2 represents a single bond, a possibly substituted fluorene group, and so forth; E2 and F2 each independently represent a possibly substituted C1-5 alkylene group; t and u each independently represent an integer from 0 to 4; and e and f each independently represent an integer from 0 to 10.) (In general formula (2), R represents a hydrogen atom or a C1-4 alkyl group.) (In general formula (3), Rz and Rx each independently represent a hydrogen atom or a C1-3 alkyl group, i represents an integer from 2 to 16, and p represents an integer from 1 to 600.)

This disclosure provides compositions. In one embodiment, an adhesive composition is provided. The adhesive composition comprises a reaction product comprising (A)(i) a dicarboxylic acid, (ii) a CB-CS diol, and (iii) a glycol polyester polyol component, and (B) an aliphatic isocyanate. This disclosure also provides a first substrate and a second substrate, and a laminate having the adhesive composition positioned between the first substrate and the second substrate.

The present application relates to a method for synthesizing water-soluble polyester without catalyst, comprising the following steps: (1) batching dicarboxylic acid, dihydric alcohol and diacid salt; wherein (n1+n3):n2=(1.02-3):1, n1 is the amount of substance of dicarboxylic acid, n2 is the amount of substance of dihydric alcohol, and n3 is the amount of substance of diacid salt; (2) performing esterification reaction under inert atmosphere, the reaction temperature is 80-220 DEG C, and the reaction time is 1-20 h; (3) performing polycondensation reaction under vacuum condition, the reaction temperature is 220-300 DEG C, and the reaction time is 1-10 h. The synthesis method avoids the environmental and health risks caused by traditional catalysts, and the prepared polyester not only has good stability and performance in chemical structure, but also fully considers environmental friendliness and safety in the production process; these new polyester materials are non-toxic and harmless, and meet the concept of green economy and sustainable development.

To provide a skin cosmetic which is excellent in comfort when applied, gives a plump feeling after application, and maintains a smooth and plump skin condition even after wearing a mask. [Solution] The present invention provides a skin cosmetic that does not contain a dihydric alcohol having 6 or more carbon atoms and phenoxyethanol, and is characterized by containing (A) 1 to 20 mass% of 1,3-propanediol, (B) 0.5 to 4 mass% of 1,2-pentanediol, (C) 0.01 to 0.5 mass% of glycerin mono 2-ethylhexyl ether, and (D) 0.00001 to 0.001 mass% of ceramide.

An unsaturated poly(arylethersulfone) (PAES) copolymer comprising C=C bonds on its main polymeric chain and / or on side chains, made from condensation of an aliphatic allyl monomer (AA) comprising at least one C=C bond and being selected from dihydroxy monomers (AA') and / or dihalogenated monomers (AA"), at least one diol (BB) selected from aromatic diols (BB'), alicyclic diols (BB") and / or acyclic diols (BB'"), and a dihalodiaryl sulfone monomer (CC). Monomer (AA') may be a α,ω-dihydroxy C4-C10 alkene and / or a C7-C15 allyl ether, preferably trimethylolpropane allyl ether. Monomer (AA") may be a α,ω-dichloro C4-C10 alkene. Diol (BB) may be an aromatic diol (BB') preferably having low-endocrine activity, an alicyclic diol (BB") preferably being bio-based, and / or an acyclic diol (BB'") preferably being a C2-C6 alkylene glycol. Monomer (CC) comprises dihalodiphenylsulfone, preferably dichlorodiphenylsulfone. The C=C bonds in the PAES copolymer are useful to efficiently further functionalize the PAES or to form a crosslinked material.

The invention discloses a method for separating a liquid mixture containing a diol compound, which is characterized by comprising the following steps of: a, mixing a liquid product containing the diol compound with an extracting agent, and extracting to obtain a heavy phase and a light phase; and b, distilling the heavy phase obtained in the step a to obtain a diol compound, wherein the extraction agent comprises a first component and a second component, the solubility of the first component in water is not less than 1g / 100g, the solubility of the second component in water is not less than 0.5 g / 100g, the solubility of the first component in a mixture of the second component and water is not greater than 1g / 100g, and the solubility of the second component in a mixture of the first component and water is not greater than 1g / 100g. The method is simple, efficient, convenient to operate, low in energy consumption, high in yield and purity of the diol compound and suitable for large-scale production.