94 results about "Suberic acid" patented technology

The present invention provides a process for preparing supported zinc dicarboxylate catalysts with high activity for the copolymerization of carbon dioxide and epoxides by supporting zinc dicarboxylate on silica support. The zinc dicarboxylate may be synthesized from zinc oxide and dicarboxylic acid such as succinic acid, glutaric acid, adipic acid, pimelic acid and suberic acid. The silica support can be selected from the group consisting of aerosil, silica gel for chromatography or reagent grade silicon dioxide. The supporting process is performed in a planetary ball grinder under vacuum.

The invention belongs to technical field of medicines and specifically relates to an oxygen bridge bis-heptylene sulfonamide compound containing a suberic acid monoanilide group as well as a synthesizing method, application and an anti-breast cancer drug composition of the oxygen bridge bis-heptylene sulfonamide compound. The oxygen bridge bis-heptylene sulfonamide compound containing the suberic acid monoanilide group is prepared by one-step reaction of the following raw materials: 3-(4-hydroxyphenyl)-4-suberic acid monoanilino-furan and an ethenyl sulfonamide derivative at the temperature of 90 DEG C for 3 without a solvent or a catalyst. The oxygen bridge bis-heptylene sulfonamide compound is different from the existing anti-breast cancer drug tamoxifen in action modes and is an anti-breast cancer compound acting on an estrogen receptor and histone histone deacetylase dual target sites.

The invention discloses a chlorine fastness improver, and a preparation method and an application thereof. The chlorine fastness improver comprises, by mass, 1-5% of polyacrylate, 5-48% of a hydrazide derivative, 0.5-6% of a dispersant, and the balance of water. The hydrazide derivative concretely is one or more of octanedioic dihydrazide, azelaic dihydrazide, sebacic dihydrazide, dodecanedioic dihydrazide, isonicotinoylhydrazine, 1,2-diisonicotinic acid hydrazide, 1,2-dimethyl-1,2-dibenzoylhydrazine and isophthalic dihydrazide. The preparation method of the chlorine fastness improver is simple, and the chlorine fastness improver makes chinlon and spandex swimming suit dyed fabrics have the advantages of effectively improved chlorine fastness, small color change, good handle, good chlorine fastness and good water wash resistance.

A process for the synthesis of an Exochelin comprising the steps of generating L-N-[(2-benzyloxy-(benzoyl)] serine or L-N-[2-benzyloxy (benzoyl)] threonine, creating L-N-t-Boc- epsilon -hydroxynorleucine and reacting same to produce L-N-Boc- epsilon -bromonorleucine trimethylsilylethyl ester, providing a dicarboxylic acid and forming an O-benzyl methyl hydroxamate from the dicarboxylic acid, coupling the O-benzyl methyl hydroxamate with the L-N-Boc- epsilon -bromonorleucine trimethylsilylethyl ester to give an L-N2-Boc-N6-methyl,N6-(benzyloxy) lysine 2-trimethylsilylethyl ester which incorporates the dicarboxylic acid as modified above, removing the N-tert-butoxycarbonyl protecting group from the L-N2-Boc-N6-methyl, N6-(benzyloxy) lysine 2-trimethylsilylethyl ester to yield a substituted lysine, and coupling the same with the L-N-[2-benzyloxy (benzoyl) serine or -threonine to yield a 2-trimethyl silylethyl ester of dibenzyl Exochelic acid, transforming the 2-trimethyl silylethyl ester of dibenzyl Exochelic acid to dibenzyl Exochelic acid, preparing benzyl epi-cobactin, forming an ester bond between the dibenzyl Exochelic acid and benzyl epi-cobactin to form an intermediate, and, hydrogenolytically removing three benzyl groups from said intermediate, resulting in the synthesized Exochelin. More particularly, a synthesis for Exochelin 786SM (R) is disclosed wherein the dicarboxylic acid is suberic acid and the serine form is utilized.

Disclosed is a lubricating oil for a fluid bearing, which has a low viscosity, a reduced amount of evaporation, and superior low-temperature flowability. The lubricating oil includes, as a base oil, a high-purity diester synthesized from a carboxylic acid material containing 90 mass % or more of azelaic acid and an alcohol material containing 90 mass % or more of 2-ethyl-1-hexanol. The carboxylic acid material contains glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid and 1,9-nanomethylenedicarboxylic acid in a total amount of 5 mass % or less.

The invention discloses a preparation method of a double-layer Mxene membrane based on different interlayer spacing, which comprises the following steps: taking titanium aluminum carbide (Ti3AlC2), hydrochloric acid (HCl) and lithium fluoride (LiF) as raw materials and PVDF (Polyvinylidene Fluoride) as a base membrane, sequentially adding HCl, LiF and Ti3AlC2 in a mass ratio of (10-20): (1-1.8): 1 into a reactor, heating and stirring at 30-40 DEG C for 24-48 hours, and repeatedly washing, centrifuging and ultrasonically stripping to obtain an Mxene solution; taking a mixed solution of the MXene solution, magnesium chloride (MgCl) and maleic acid (MA) in an isovolumetric concentration ratio of 1: (0.5-1): (0.5-1), carrying out vacuum suction filtration on a base membrane, and carrying out vacuum drying at 70-80 DEG C for 5-6 hours to obtain an MXene membrane; and then taking a mixed solution of an MXene solution, sodium chloride (NaCl) and suberic acid (SA) with the isovolumetric concentration ratio of 1: (0.5-1): (0.5-1), carrying out vacuum suction filtration on the MXene membrane, and carrying out vacuum drying for 5-6 hours at the temperature of 70-80 DEG C to obtain the double-layer MXene membrane. The preparation method disclosed by the invention is simple, and the obtained double-layer membrane has relatively high water flux and salt rejection rate and relatively low reverse salt flux, can filter substances with different molecular sizes, and is mainly applied to the field of hard water softening.

The invention discloses a degradable plastic bag. The degradable plastic bag comprises the following raw materials of an ethylene-acrylic acid copolymer, lignosulfonate, epichlorohydrin, a modified antibacterial agent, linear low-density polyethylene, polyvinyl alcohol, polylactic acid, pentaerythritol, suberic acid, diphenylmethane diisocyanate, dioctyl phthalate, a silane coupling agent KH-570,bamboo fibers, potato starch, montmorillonoid, konjac glucomannan, calcium carbonate, liquid paraffin, ethylene acrylic ester, glycerin and fatty acyl diethanol amine. A production method of the degradable plastic bag is further provided. The produced degradable plastic bag has excellent antibacterial performance and mechanical strength.

The invention relates to a free thyroxine nanometer magnetic particle chemiluminescence assay kit and a preparation method thereof and a detection method thereof. The free thyroxine nanometer magnetic particle chemiluminescence assay kit comprises solutions containing fluorescein-labeled free thyroid antibodies, suspension liquid of magnetic particles covered with fluorescein-resistance antibodies and solutions containing alkaline-phosphatase-labeled free thyroxine antigens, wherein the alkaline-phosphatase-labeled free thyroxine antigens are formed by the connection of alkaline phosphatase and the free thyroxine antigens through crosslinking agent suberic acid succinimide ester. The free thyroxine nanometer magnetic particle chemiluminescence assay kit and the preparation method thereof and the detection method thereof have the advantage of enabling the free thyroxine to be quantificationally detected on the condition of lower cost, higher accuracy and higher precision.

The invention discloses shock absorbing rubber. The shock absorbing rubber comprises the following ingredients: 100 parts by weight of butadiene styrene rubber, 20-30 parts by weight of natural rubber, 10-40 parts by weight of carbon black, 10-30 parts by weight of silicon dioxide, 2-20 parts by weight of suberic acid diethyl ester, 1-4 parts by weight of anti-aging agent, 1-5 parts by weight of vulcanizing agent, 1-5 parts by weight of accelerant and 3-8 parts by weight of cross-linking agent, wherein the weight ratio of the carbon black to the silicon dioxide is (1.5-2):1. Compared with existing shock absorbing rubber, the shock absorbing rubber has the advantage that the creep property is improved obviously.

The invention discloses a wollastonite / polypropylene composite material and a preparation method thereof. The wollastonite / polypropylene composite material comprises, by weight, 65-85 parts of polypropylene, 5-10 parts of flexibilizers, 10-25 parts of surface treatment wollastonite and 0.1-1 part of lubricants, wherein the surface treatment wollastonite is prepared by the preparation method including the steps: adding wollastonite and surface treatment agents into a powder surface modification device according to the weight ratio of 100:(0.5-3) and performing surface coating treatment on the wollastonite. The surface treatment agents are selected from one or more of suberic acid, terephthalic acid and phthalic acid. The wollastonite / polypropylene composite material has excellent flowability and mechanical property.

Lubricant composition comprising a dicarboxylic acid ester component which is formed from a dicarboxylic acid selected from the list consisting of adipic acid, phthalic acid, pimilic acid, suberic acid, azelaic acid and sebacic acid, and mixtures thereof and a branched aliphatic alcohol R—OH which is defined according to the following formula (I)whereas q, r and s are defined as follows,q+r=4 to 9,s=0 to 5,q=1 to 8, andr=1 to 6,andan ethylene-propylene copolymer.