2101 results about "Methylene" patented technology

The present invention provides a compound of the formula:wherein Ar represents an aromatic group which may be substituted;X represents methylene, S, SO, SO2 or CO;Y represents a spacer having a main chain of 2 to 5 atoms;n represents an integer of 1 to 5;i) R1 and R2 each represents a hydrogen atom or a lower alkyl which may be substituted,ii) R1 and R2 form, taken together with the adjacent nitrogen atom, a nitrogen-containing heterocyclic ring which may be substituted, oriii) R1 or R2 together with -(CH2)n-N= form, bonded to a component atom of Ring B, a spiro-ring which may be substituted;Ring A represents an aromatic ring which may be substituted;Ring B represents a 4- to 7-membered nitrogen-containing non-aromatic ring which may be further substituted by alkyl or acyl,with a proviso that X represents S, SO, SO2 or CO when Ring A has as a substituent a group represented by the formula:where R11 represents alkyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl, cycloalkylalkyl, aryl, arylalkyl or a group represented by the formula:where R12 represents alkyl, cycloalkyl, cycloalkylalkyl, aryl or arylalkyl, or a salt thereof; which has an excellent somatostatin receptor binding inhibition action.

Saturated and unsaturated compounds having sweet, salt or umami taste enhancement qualities. The compounds have the structure:

where R¹═H or methyl;

• R² is selected from the group consisting of H, C1-C4 alkyl, alkenyl and methylene;
• R³ is selected from the group consisting of H, C1-C8 straight or branched chain alkyl, alkenyl, dienalkyl or phenyl;
• or if R¹═H, R² and R³ taken together can represent

cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, or cyclohexenyl;

R⁴ is selected from the group consisting of H, methyl and ethyl;

R⁵ is selected from the group consisting of H, methyl and ethyl;

R⁶ is selected from the group consisting of H, C1-C9 straight or branched chain alkyl, alkenyl, alkyldienyl, acyclic or containing no more than one ring;

with the proviso that in structure 1 when R⁴ is H or Me; and

R⁵═H or methyl, R⁶ may be selected from the group described above or phenyl.

The invention discloses a medicament for treating composite water in a hot water boiler. The medicament comprises the following components by mass percent: 0.1-3% of inorganic phosphate, 0.1-2% of organic phosphoric acid and/or organic phosphate, 0.1-4% of component A, 0.1-3% of component B, 0.6-1.0% of organic amine deoxidizer, 0.1-2% of tannin and/or chitosan and the balance of water, wherein the mass percent of the components is 100%, the component A is one or more of an organic antisludging agent, an organic dispersant and an organic dispersible antisludging agent, and the component B is one or more of an organic carboxylic acid corrosion inhibitor, an organic carboxylate corrosion inhibitor and sodium methylene dinaphthalenesulfonate. The invention further discloses a preparation method and a use method of the medicament, the preparation process is clean, and the medicament is low in toxicity for body health and environment in the using process. The medicament is excellent in corrosion resistance and scale inhibition effects and simple and convenient to store and transport, and the corrosion and scale inhibition effects cannot be reduced after the medicament is stored and transported for a long term.

The invention discloses a silicate cement grinding aid and a preparation method thereof. The silicate cement grinding aid is prepared from the following main raw materials by weight: 3-6 parts of sodium hexametaphosphate, 2-5 parts of aluminum sulfate, 5-8 parts of tetra sodium salt of amino trimethylene phosphonic acid (ATMP.Na4), 4-6 parts of ethylene diamine tetra (methylene phosphonic acid) sodium, 38-45 parts of polymeric alkylol amine, 34-42 parts of triisopropanolamine, 8-12 parts of waste engine oil, 2-5 parts of sodium alpha-olefin sulfonate, 10-16 parts of sorbitol, 15-20 parts of diethylene glycol, 8-13 parts of polypropylene wax, 6-10 parts of oxidized polyethlene wax, 4-8 parts of lignite wax, 20-30 parts of odium thiosulfate, 12-18 parts of sodium thiosulfate and 15-20 parts of quicklime powder. The prepared silicate cement grinding aid has the advantages that the quality is stable, the effect is remarkable, the adding amount is small, the use is simple, and the adding is more convenient and reliable to control.

The invention discloses a modified lignin and a urea-formaldehyde resin synthesized from same and preparation methods of the modified lignin and the urea-formaldehyde resin, belonging to the field of bonding agents used in wood processing. A technological synthetic route with weak base-weak acid-weak base is adopted, the molar ratio of formaldehyde to urea is controlled during an addition stage to generate a reasonable structure, the modified lignin as well as residual hydroxymethyl and free formaldehyde are added at the later stage of reaction in order to accomplish reaction, thus the content of methylene ether link (-CH2-O-CH2-) and the content of hydroxymethyl in the resin are reduced to a certain extent, the formaldehyde emission of the resin is lowered, and simultaneously, higher bonding strength and water resistance are ensured. The urea-formaldehyde resin in the invention is simple and brief in process and low in cost, the formaldehyde emission of the plate prepared by adoptingthe bonding agent reaches the E0-level standard and the plate can maintain high bonding strength after being cooked in hot water. The modified lignin is simple in synthesis method and low in cost andis especially suitable for the modification of the urea-formaldehyde resin with low molar ratio.

There is provided a CRF receptor antagonist comprising a compound of the formula (I):

A-W—Ar  (I)

wherein, A is a group represented by the formula (A1) or (A2):

• (wherein, ring Aa is a 5- or 6-membered ring which may be further substituted; ring Ab is a 5- or 6-membered ring which may be further substituted; ring Ac is a 5- or 6-membered ring which may be substituted; R¹ is optionally substituted alkyl, substituted amino, substituted hydroxy, etc.; X is carbonyl, —O—, —S—, etc.; Y¹, Y² and Q are independently optionally substituted carbon or nitrogen; is a single or double bond); W is a bond, optionally substituted methylene, optionally substituted imino, —O—, —S—, etc.; Ar is optionally substituted aryl or optionally substituted heteroaryl; or a salt thereof or a prodrug thereof.

The invention relates to a method for pretreating a cotton fabric at low temperature by using biological enzymes and hydrogen peroxide through one bath process. The method adopts N-[4-(trialkyl ammonium methylene)benzoyl] lactam chloride activator, hydrogen peroxide, a desizing enzyme, a scouring enzyme and supporting aids and has the characteristics of low temperature of 25-60 DEG C in the whole course, nearly neutral reaction condition (with pH value being 6.5-7.5) and low fiber damage. The cotton fabric treated by the adopting the method has no residual sizing agent and cottonseed hull, is equivalent to the cotton fabric treated by adopting the conventional method in whiteness and moisture absorption and is superior to the cotton fabric treated by adopting the conventional method in strength and handfeel. The process of the method is shortened greatly, the energy is saved, and the sewage treatment burden is lightened.

The invention provides a phenanthrene and imidazole-coumarin double-fluorescent group ratio fluorescent molecular probe for iron ion detection and synthesis and use methods thereof, relates to fluorescent molecular probes and synthesis and application thereof and aims to solve the problem that an existing Fe<3+> fluorescent probe is prone to being interfered by pH, concentration and other metal ions. The fluorescent molecular probe is 4-methyl-7-hydroxide radical-8-[2-(1- phenyl group-1H-phenanthrene and [9, 10-d] imidazole-2-)benzene ammonia methylene]-2H-pyran-2-ketone. The phenanthrene and imidazole-coumarin double-fluorescent group ratio fluorescent molecular probe is formed by conducting condensation on 1-N-phenyl group-2-(2-aminophenyl)-1H-phenanthrene and [9, 10-d] imidazole and 4-methyl-7-hydroxide radical-8- formyl group coumarin, and the yield is 75-85%. The fluorescent molecular probe is dissolved in mixed liquid of N, N- dimethylformamide and an HEPES buffering solution, existence of iron ions is judged through the absorbance value or fluorescence intensity change before and after adding of test samples, and the fluorescent molecular probe can be used for detection of Fe<3+> pollution in water.

The invention belongs to strong-fluorescence boron dipyrromethene dyes containing a carbazole structure in the technical field of organic chemical industry and fine chemical industry. Because a method for preparing the strong-fluorescence boron dipyrromethene dye containing the carbazole structure and derivatives thereof adopts boron dipyrromethene and carbazole aldehyde with substituent as raw materials, the molar ratio of the boron dipyrromethene to the carbazole aldehyde is 1:2-5, piperidine is a catalyst, a 4-angstrom molecular sieve is a dehydrating agent, and the molar ratio of the borondipyrromethene to the catalyst is 1:0.01-0.20; in an organic solvent, at the temperature of between 100 and 150 DEG C and under the protection of argon or nitrogen, the mixture reacts for 8 to 50 hours by stirring, the carbazole aldehyde and the active methylene of the boron dipyrromethene are dehydrated to generate the boron dipyrromethene derivatives; and after the carbazole structure with different substituents is introduced into the boron dipyrromethene, the optical property of the boron dipyrromethene compound is changed, the red shift of the absorption spectrum thereof is 80 nanometers, the red shift of the emission spectrum is 90 nanometers, higher fluorescence quantum yield is kept at 0.67, the laser efficiency reaches more than 30 percent, and the strong-fluorescence boron dipyrromethene derivatives containing the carbazole structure are obtained.

The invention provides a method for preparing 1, 3-methyl-5-(2, 6, 6-trimethyl-1- cyclohexene-1-yl)-2, 4-pentadiene methyl phosphonate. In the method, a benzophenone compound preventing transposition is added in the process of generating the 1, 3-methyl-5-(2,6,6-trimethyl-1-cyclohexene-1-yl)-2,4-pentadiene methyl phosphonate by the reaction of methylene diphosphate four alkyl and C14 aldehyde in a mixed solvent of methylbenzene and tetrahydrofuran, thereby inhibiting the generation of a target product isomer in order that the content of the target product in a final product reaches up to 97 percent.

A conductive paste containing a conductive powder (A), a vinyl chloride-vinyl acetate resin (B), a polyester resin and/or polyurethane resin (C), a blocked isocyanate (D) blocked with an active methylene compound, and an organic solvent (E), wherein the resin (C) has a glass transition temperature of −50° C. to 20° C., a sum of amounts of the resin (C) is 50 to 400 parts by weight relative to 100 parts by weight of the resin (B), and a sum of amounts of the resin (B), the resin (C) component, and the blocked isocyanate (D) is 10 to 60 parts by weight relative to 100 parts by weight of the conductive powder (A). An electric wiring in which this conductive paste is formed on an insulating substrate.

Disclosed is a photosensitive composition for volume hologram recording which shows excellent interference fringe record and a volume hologram recording medium having lighter weight and excellent storage stability. The invention is directed to a volume hologram recording photosensitive composition comprising: (a) a compound having at least one active methylene group in one molecule or a compound having at least two active methine groups in one molecule; (b) a compound containing in one molecule two or more groups which are nucleophilicly added by a carbanion generating from an active methylene group or an active methine group; (c) a Michael-reaction catalyst; (d) a photopolymerizable compound; and (e) a photopolymerization initiator composition.

The invention provides a method for preparing a Salen-metal complex. The method comprises the following steps of: under the argon atmosphere, adding ligands(II), sodium methoxide, absolute methanol soluble ligands(II) and sodium methoxide into a reactor in sequence; stirring the mixture for 2 minutes, and adding 1mol/L cobalt acetate anhydrous/ methanol solution dropwise, wherein the molar ratio of the ligands(II) to sodium methoxide to cobalt acetate is 1:1:1; and making the mixture reacted at the room temperature for 24 hours, adding anionic salt which has the same molar weight as the cobalt acetate, stirring the mixture for three days in the air, stopping the reaction, concentrating the mixture, performing dissolution and filtration by adding methylene chloride, drying the filtrate by anhydrous sodium sulfate overnight, filtering the mixture, concentrating under reduced pressure, and drying the mixture under the vacuum condition to obtain the Salen-metal complex. The Salen-metal complex prepared by the method has the advantages of simple method, low cost and high catalytic efficiency.

The invention relates to a method for producing granulated sorbents, and to an installation for carrying out the method. The aim of the invention is to obtain the chloride form of the double hydroxide of aluminium and lithium as LiCL2AI/OH)3 nH2O (DHAL-CL) in a waste-free solid phase of aluminium hydroxide and lithium salts in a mixer, with subsequent continuous activation of crystalline DHAL-CI in a centrifugal mill activator in order to obtain a defectuous material structure. The product obtained is mixed with chlorinated polyvinyl chloride as a binding agent and with liquid methylene chloride. The granulation is carried out by extruding the paste produced and refining the same in the granulator. The methylene chloride produced is collected by an organic liquid absorbent having a high boiling point. The methylene chloride steam is guided out of the material flow in the carrier gas flow in the manner of an ideal displacement in the counter-current of the contact phases. The methylene chloride recuperation is carried out in two steps according to the thermal method, during the heating of the absorbent used. The inventive method is characterised by essentially reduced environmental impact in relation to prior art, due to the closed material circuits used. The granulated sorbent is especially suitable for the selective extraction of lithium from chloride salt lye of any mineralization, with an extraction degree of 95 %.

Improvements in preventing heat- and moisture-shrink problems in specific polypropylene tape fibers are provided. Such fibers are basically manufactured through the initial production of polypropylene films or tubes which are then slit into very thin, though flat (and having very high cross sectional aspect ratios) tape fibers thereafter. Such fibers (and thus the initial films and/or tubes) require the presence of certain compounds that quickly and effectively provide rigidity to the target polypropylene tape fiber after heat-setting. Generally, these compounds include any structure that nucleates polymer crystals within the target polypropylene after exposure to sufficient heat to melt the initial pelletized polymer and upon allowing such a melt to cool. The compounds must nucleate polymer crystals at a higher temperature than the target polypropylene without the nucleating agent during cooling. In such a manner, the "rigidifying" nucleator compounds provide nucleation sites for polypropylene crystal growth. Upon slitting of the initial film and/or tube, the fiber is then exposed to sufficient heat to grow the crystalline network, thus holding the fiber in a desired position. The preferred "rigidifying" compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as sodium benzoate, certain sodium and lithium phosphate salts (such as sodium 2,2'-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11). Specific methods of manufacture of such inventive tape fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

The liquid crystal composition of the invention contains at least two compounds represented by the following formula (A) and each having different structures, one or more methylene group in the alkylene group R1 may be substituted with -O- groups, not less than 50% by weight, and has a transmitted light quantity I32 satisfying the condition of 0.5<=I32<=0.50,wherein R1 is an alkyl group of 2 to 20 carbon atoms; m is 0 or 1; Z is a -COO- group or a -CH2O- group; X is a hydrogen atom, a methyl group or a trifluoromethyl group; and R2 is a group selected from the group consisting of a straight-chain alkyl group of 1 to 5 carbon atoms, an ether group represented by -(CH2)p-O-(CH2)qCH3 and an alkene group wherein a terminal ethyl group consisting a straight-chain alkyl group of 2 to 5 carbon atoms is replaced with a group having a C=C double bond.

The invention discloses an environment-protective urea-formaldehyde resin with novel structure as well as a preparation method and an application thereof. The environment-protective urea-formaldehyde resin with novel structure is prepared from formaldehyde, carbamide, performed polymer of the carbamide and dialdehyde and one or more modifying agents according to the process steps of weak base, weak acid and weak base. In the method, the performed polymer of the carbamide and dialdehyde is introduced in the reaction of matrix resin to prepare resin and generate stable alkyl ether structure (-CH2n-O-CH2n-) so as to reduce the content of methylene ether link in the resin, and meanwhile, the introduction of polyfunctional radicals enhances the degree of crosslinking of the resin, therefore, on the premise of ensuring the cementation strength and the water resistance of the resin, the formaldehyde emission of sheet materials in use is greatly reduced. The urea-formaldehyde resin prepared by the method has the advantages of low free formaldehyde content, low cost, simple process and favorable cementation strength. The formaldehyde emission of sheet materials manufactured by the sizing agent reaches the standard of E0 grade.

The invention discloses a highly branched oily alkane polymer, and a preparation method and application thereof. The highly branched oily alkane polymer provided by the invention has the following characteristics that (a) the viscosity index ranges from 100 to 300, (b) the pour point ranges from minus 50 DEG C to minus 10 DEG C, (c) the molecular weight ranges from 300 to 500,000 g/mol, and (d) the number of methyls corresponding to every 1000 methylenes ranges from 100 to 500. The invention also discloses a preparation method and application of the highly branched oily alkane polymer, and a lubricating oil prepared from the highly branched oily alkane polymer. The highly branched oily alkane polymer provided by the invention is high in viscosity index and high in branching degree, and thus can be used as a base oil or a processing assistant for an advanced lubricating oil.

The invention provides pyridone derivatives represented by a general formula (I) [in the formula, R 1 and R 2 may be same or different and stands for H, etc., or R 1 and R 2 may form an aliphatic nitrogen-containing heterocyclic group together with the N to which they bind; X 1 -X 3 may be same or different and stand for methine or N, provided not all of them simultaneously stand for nitrogen; X 4 -X 7 may be same or different and stand for methine or N, provided that three or more of them do not simultaneously stand for N; Y 1 and Y 3 may be same or different and stand for single bond, -0-, -NR-, -S-, etc ; Y 2 stands for lower lkylene, etc.; R stands for H, etc., L stands for methylene; Z 1 and Z 2 may be same or different and stand for single bond or lower alkylene; or R 1 , L and Z 2 may form an aliphatic nitrogen-containing heterocyclic group with the N to which R 1 binds; and Ar stands for aromatic carbocyclic group, etc.

A layer is spaced between an anode and a cathode and is composed of an organic compound represented by the following general formula [1].

wherein R₁ to R₁₀ are each independently a hydrogen atom, a halogen atom, a substituted amino group, an alkyl group, an aryl group, and a heterocyclic group; and X represents (a) an alkylene group having 2 to 6 carbon atoms, wherein in the alkylene group, one or separate two methylene groups may be substituted by —O—, —CO—, —CO—O—, —S—, or —NRa₁—, and a hydrogen atom may be substituted by a linear, branched, or cyclic alkyl group having 1 to 10 carbon atoms, (b) an aryl group which may be substituted, or (c) a heterocyclic group which may be substituted, or (d) a fluorine atom.

The invention relates to the chemical field and discloses a preparation method of acrylamide modified grafted corn cob. The preparation method comprises the following steps: the agricultural waste corn cob is used as a raw material, maleic anhydride is used to modify the corn cob, then ammonium persulfate is used as an initiator, N,N-methylene diacrylamide is used as a crosslinking agent to perform graft copolymerization with acrylamide to prepare the modified corn cob. The product has good stability and flocculation performance, the flocculating rate is up to 89.66%, and the product can be used as a flocculant; and the product has better development and application prospects in the water treatment field. By adopting the method, agricultural resources can be utilized reasonably, the added value of the agricultural product can be increased, environment protection can be favored and the sustainable development strategy is beneficial to realization.