179 results about "Mercapto compound" patented technology

Disclosed is a polyol/polyisocyanate adhesive system having an isocyanate component and a catalyzed component which form a heat-cured composition when admixed and heated above a threshold temperature. The catalyzed component has a hydroxyl-functional component catalyzed with a catalyst combination of a heat-activatable amine or amine-like catalyst which is activated at temperatures above the threshold temperature, and an activatable complexed metal catalyst comprising the reaction product of tin or bismuth catalysts, or a mixture thereof, and a molar excess of a mercapto compound complexing agent. The catalyst combination is effective to maintain the processibility of the system at ambient temperatures while promoting the rapid cure of the system when heated above the threshold temperature.

A photoresist stripper composition, a method for forming wire structures thereby, and a method of fabricating a thin film transistor substrate using the composition. The photoresist stripper composition includes about 50 WT % to about 70 WT % of butyldiglycol, about 20 to about 40 WT % of an alkylpyrrolidone, about 1 WT % to about 10 WT % of an organic amine compound, about 1 to about 5 WT % of aminopropylmorpholine, and about 0.01 to about 0.5 WT % of a mercapto compound.

The present invention discloses one kind of fast curing double-component epoxy adhesive and its preparation process. The adhesive comprises component A comprising epoxy resin or modified epoxy resin and plasticizer or roughener; and component B comprising modified amine curing agent, composite promoter and coupling agent. The adhesive features that of the component B, the modified amine curing agent is prepared with aliphatic polyamine 20-40 wt%, hydroxyl compound 40-50 wt% and thiourea compound 8-15 wt% and through reaction at 70-120 deg.c; and the composite promoter is prepared with mercapto compound 30-50 wt% and Lewis base 50-70 wt% and through reaction at 40-80 deg.c. After mixing, the adhesive may form gel in 3-8 min at room temperature and have strength reaching 6.7 MPa in 30 min.

The invention relates to a method for rapidly preparing a water-soluble quantum dot by an ultrasonic spraying method with continuous production, which comprises the following steps that: cadmium ions or zinc ions and hydrogen (or selenide) telluride or sodium hydrogen telluride (or selenide) react to obtain a precursor solution of cadmium (zinc) telluride (selenide) through the complexation of a mercapto compound. An ultrasonic atomizer is used to atomize the precursor solution to form fogdrops of the precursor solution, and the fogdrops flow through a device with constant temperature to react to obtain the water-soluble quantum dot. The method has the advantages of high speed and continuous quantum dot production, the prepared quantum dot has high fluorescence quantum yield (between 20 and 50 percent), and good monochromaticity of luminescence (the peak width at half height of a fluorescence spectrum within the range of visible light is between 30 and 40nm), and the size of nano-particles can be easily controlled by changing the temperature and flow rate, thereby realizing the adjustment to luminescence peak positions (between 400 and 700nm).

A microwave process for preparing the water-soluble core/shell quantum point of CdTe/CdS with high fluorescent quantum efficiency includes such steps as mixing the salt or oxide of Cd with water-soluble mercapto compound in water phase, filling the solution of CdTe nanocrystal to obtain the precursor solution of CdTe/CdS, filling in glass tube, and microwave irradiating in microwave reactor.

Hybrid radiation curable and/or low temp thermal cured thiol-ene compositions containing a quantity of unsaturated oligomers, a quantity of unsaturated polymers, a quantity of unsaturated monomers, a quantity of mercapto compounds, a quantity of functional silanes compounds and an activation catalyst as well as a possible quantity of adjuvants, such as stabilizers, pigments, amine acrylates, fillers, film forming and rheology additives, cationic initiators and polymerization inhibitors. The quantity of mercapto compounds, the quantity of functional silane compounds, the quantity of unsaturated polymers, the quantity of unsaturated oligomers, the quantity of unsaturated monomers, and the activation catalyst are mixed in order to form a coating mixture. The coating mixture is used for coatings and inking onto imprintable surfaces.

A hair relaxer includes at least one specific mercapto compound such as 2-methoxyethyl 3-mercaptopropionate, 2-mercapto-4-butanolide and 2-mercapto-4-butyrolactam. The hair relaxer can achieve an excellent effect of shaping and relaxing hair over a wide range of pH values from weak acidity to weak alkalinity. In particular, the hair relaxer displays a more superior hair shaping and relaxing performance in a weakly acidic to neutral pH range. Consequently, the hair relaxer can drastically reduce the damage to the hair and skin and can reliably perform straightening, uncurling, curling and other hair processing.

The invention discloses a low-modulus optical adhesive composition comprising the following components: 30-60 % of polyfunctional (meth) acrylate resin, 35-65 % of a (meth) acrylate monomer diluents, 3-12 % of a mercapto compound and 0.5-2 % of a photoinitiator. The low-modulus optical adhesive composition provided by the invention does not contain a plasticizer, and has characteristic of relatively low viscosity. By using the composition of the invention for bonding, electro-conductive glass membrane, display modules and panels are not polluted due to shift of the plasticizer, thereby improving precision and accuracy of touch screens. Furthermore, the composition of the invention does not rely on increasing a content of an active diluent to achieve the effect of low viscosity, thereby preventing generation of relatively large internal stress to cause warp and deformation at bonding positions.

A (poly)oxyalkylene block silyl ester copolymer comprising silyl ester copolymer block units (A) and block units (B), the silyl ester copolymer block units (A) comprising (a) component units derived from a polymerizable unsaturated carboxylic acid silyl ester, and (b) polymerizable unsaturated monomer units other than the component units (a), the block units (B) derived from a mercapto compound represented by the following formula (1) or (2), and further an antifouling paint comprising the (poly)oxyalkylene block silyl ester copolymer. wherein R1 represents a hydrocarbon group or ether-bond-containing hydrocarbon group having a valency of 1 or higher and having 1 to 30 carbon atoms; R2 represents a bivalent hydrocarbon group having 1 to 30 carbon atoms or a group of the formula -CH(R3)-wherein R3 represents a group of the formula R4-O-R5, R4 representing a bivalent hydrocarbon group having 1 to 30 carbon atoms, and R5 representing a monovalent hydrocarbon group having 1 to 30 carbon atoms; X represents: ; n is an integer of 1 to 5; m is an integer of 1 to 100; l is an integer of 1 to 5; k is an integer of 0 to 100; a is an integer of 0 or 1; j is an integer of 1 to 50; and i is the valency of R1. The present invention enables forming an antifouling coating film which exhibits less cracking tendency, excellent adherence so as to ensure less peeling tendency and desirably controlled hydrolysis rate so as to be excellent in antifouling performance (antifouling activity), antifouling properties, in particular, antifouling properties in highly fouling environment and long-term antifouling properties.

The invention discloses a fluorescent probe containing N, N-diethyl paramethylaminophenol and application thereof in the thiophenol detection. The structural formula of the fluorescent probe is as follows: in a phosphate buffered solution with pH value of 7.4, the compound can be in nucleophilic substitution reaction with thiophenol for releasing out the strong fluorescent material 3-(N, N-diethyl)-6-hydroxy-fluorane, so that the reaction system has a strong fluorescent signal at the wavelength of 543 nm; experimental results show that the fluorescent probe is used to detect the thiophenol; the detection limit of the thiophenol is 6.0*10<-9>mol/L; the relative standard deviation is 2.6%; the qualitative and quantitative detection of the thiophenol can be realized. The detecting method is simple in operation, high in accuracy and sensitivity and good in selectivity; different thiol compounds have no disturbance to the system of the fluorescent probe detecting the thiophenol; the fluorescent probe can be used for detecting the content of the thiophenol in a water sample.

An optical device having a structure which contains a metallic layer and enables excitation of plasmon resonance, such as a measurement chip for use with a surface-plasmon-resonance biosensor having a metallic layer. In order to prevent oxidation of the metallic layer, the metallic layer is covered with a film made of a mercapto compound containing a benzene ring and/or a hetero ring, or a reductive compound containing a metal-binding group which can be bound to the metal of which the metallic layer is made.

Novel additive systems for lead-free filled cable insulation are disclosed. These systems provide improved electrical and mechanical properties. The base polymer may be metallocene based, non metallocene based or combinations thereof. The additives may contain one or more hindered amine light stabilizers, mercapto compounds, and optionally, amine antioxidants.

The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive wherein the catalyst composition is contacted with hydrogen and a sulfur-containing compound in the gaseous phase, characterized in that the process is carried out ex situ. By carrying out the process ex situ, the formation of undesirable side compounds in the hydrotreating unit is prevented. Additionally, the reactor suffers less downtime, and the start-up of the reactor may be simplified. The S-containing organic additive preferably is a mercapto-compound, more preferably a mercaptocarboxylic acid represented by the general formula HS-R1-COOR, wherein R1 stands for a divalent hydrocarbon group with 1-about 10 carbon atoms and R stands for a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a linear or branched alkyl group having 1 to about 10 carbon atoms. The invention also pertains to the catalyst made by the above process and a process for hydrotreating a hydrocarbon feed by contacting the feed with the catalyst at hydrotreating conditions.

The method refers to a temperature and pressure control microwave synthesis of water-soluble cobaltic-cobaltous oxide nanocrystal, using water as solvent, dissolving cobalt salt in water, adding water-soluble mercapto compound as stabilizer, controlling the mol ratio of cobalt ion and water-soluble mercapto compound as 1:10 to 1:1, adjusting solution's pH value to 5-12, getting precursor solution. Afterwards placing the precursor solution in hermetic polytetrafluoroethylene tank, reacting in microwave reactor of temperature and pressure controlled, quickly synthesize cobaltic-cobaltous oxide nanocrystal. The operation of this invention method is simple, the condition is gentle, the cost is low, and the synthetic product cobaltic-cobaltous oxide nanocrystal has the characters of good water-solubility, equal dimension distribution, adjustable size, high degree of crystallization and so on.

The invention relates to a method for rapid preparation of an organic-inorganic hybrid porous integral material based on photoinduced thiol-ene polymerization reaction. Specifically, the method includes: mixing a tetravinyl compound (functional monomer), a multi-mercapto compound (functional monomer), a pore-forming agent and a photoinitiator and conducting ultrasonic dissolution, then carrying out photoinduced thiol-ene polymerization reaction under the irradiation of an ultraviolet lamp with certain wavelength, thus obtaining the porous organic-inorganic hybrid integral material by one step. The preparation method has the advantages of mild conditions, high efficiency and controllability, etc., also can select different functional monomers according to different application requirements, or adjust the pore-foaming agent system to prepare a series of organic-inorganic hybrid integral materials with different physical and chemical properties.