6 results about "Thiuram disulfide" patented technology

The phenylenediamine-based antioxidant is used as a substitute for 6PPD, while improving scorch resistance and heat aging resistance. [Solution] The rubber composition according to the embodiment comprises a rubber component, a phenylenediamine-based antioxidant represented by the following formula (1), and a thiuram disulfide-based vulcanization accelerator. In formula (1), R 1 and R 2 Each of these independently represents a hydrocarbon group having 6 or more carbon atoms, however, R 1 and R 2 Except when it is a combination of a phenyl group and a 1,3-dimethylbutyl group. [Formula 1] JPEG2026103949000010.jpg42129

The invention relates to the technical field of polymer foam materials, in particular to a rubber-based composite foam material for a middle layer of a shoe sole and a preparation method of the rubber-based composite foam material for the middle layer of the shoe sole. Adding a foaming agent, sulfur, an accelerant N-cyclohexyl-2-benzothiazole sulfenamide and tetrabenzylthiuram disulfide, and carrying out secondary internal mixing to obtain a uniformly mixed styrene butadiene rubber / natural rubber-based rubber compound; putting the rubber compound into an open mill, and discharging bubbles; and finally, carrying out high-temperature curing foaming on the rolled rubber compound by using a plate vulcanizer. The rubber-based composite foam material obtained by the invention has the characteristics of simple process, light weight, uniform foam holes, high elasticity and high tensile strength, and is suitable for middle-layer materials of soles.

Disclosed is a method comprising combining the following components to form a platinum (II) dithiocarbamate complex in a solvent: (i) a platinum (0) complex; (ii) tetrahydrocarbyl thiuram disulfide; and (iii) a solvent. The method may also include separating the platinum (II) dithiocarbamate complex from a solvent to separate the platinum (II) dithiocarbamate complex. The method can also include preparing a curable silicone composition by combining the platinum (II) dithiocarbamate complex with a vinyl functional silicone and a silyl hydride functional silicone to form a curable composition.

A process for preparing a liquid silicone composition comprising a linear organopolysiloxane includes the steps of: (a) combining (A) a polyorganohydrogensiloxane having an average of one or more SiH groups per molecule, (B) a specific alkenyl-functional compound having an average of one or more alkenyl groups, and (C) a platinum (0) complex catalyst together to form a reaction mixture; provided that, if (A) contains more than one SiH group, (B) contains one alkenyl group; (b) reacting the reaction mixture obtained from step (a) under conditions such that at least part of (A) and at least part of (B) react to form the linear organopolysiloxane; and (c) upon conversion of greater than 95%of the SiH groups of (A), combining the reaction mixture obtained from step (b) with a thiuram disulfide compound at a specific molar equivalent ratio to obtain the liquid silicone composition.

The application relates to the field of advanced packaging semiconductor driving chips, and discloses a gold etching solution, application of the gold etching solution and a method for etching a wafer electroplated gold-silver alloy. The gold etching solution comprises a complexing agent, an oxidizing agent, an aluminum protective agent and a solvent; wherein the complexing agent comprises a main complexing agent and an auxiliary complexing agent; the main complexing agent is selected from thiourea and / or a thiourea derivative; the auxiliary complexing agent is selected from at least one of butyl xanthate, isoamyl xanthate, thiuram disulfide and diethyl phosphonate; and the weight ratio of the complexing agent: the oxidizing agent: the aluminum protective agent: the solvent is 1:(0.2-1.5):(0.2-1.5):(20-30). The gold etching solution has mild oxidizing property, can selectively etch a PVD gold seed layer, avoids etching the gold-silver alloy bump itself, does not cause the gold-silver alloy bump to appear serious deformation, avoids damage to aluminum lines in the wafer caused by etching, and has mild etching conditions and adjustable gold etching rate.

The invention discloses a TPE / rubber double-color master batch preparation method based on a dynamic vulcanization technology, and belongs to the technical field of high polymer material processing. The preparation method of the TPE / rubber double-color master batch based on the dynamic vulcanization technology comprises the following steps: 1, adding polypropylene, a composite synergist, calcium carbonate and a modified antioxidant into a main feeding port of a double-screw extruder, melting and mixing, adding ethylene propylene diene monomer which is uniformly mixed with paraffin oil and a coloring agent through a side feeding machine, mixing, and carrying out extrusion molding to obtain a master batch; a blend is obtained; 2, sulfur, tetramethyl thiuram disulfide and a silane coupling agent KH-550 are added into the blend through a downstream side feeding port, a dynamic vulcanization reaction is conducted, after the reaction is finished, extrusion, water cooling, grain-sized dicing and drying are conducted, and the TPE / rubber double-color master batch is obtained. The TPE / rubber double-color master batch prepared by the method has excellent mechanical properties, toughness and oxidation resistance.