10 results about "PHENOLSULFONIC ACID" patented technology

An ethoxylated cardanol sulphonic acid represented by Formula I is disclosed. (I) wherein: n = 7-20; R = H or SO3H. Also are disclosed, formulations comprising and a process for preparing said ethoxylated cardanol sulphonic acid.

A formulation comprising 10-90 wt% of an ethoxylated cardanol sulphonic acid represented by Formula (I) wherein n = 7-20; R = H or SO3H; and 90-10 wt% of linear alkyl benzene sulfonic acid is disclosed.

This invention discloses an etching solution composition for inhibiting etching blackening and precipitation, belonging to the field of electronic chemical technology. The etching solution composition, by weight percentage, includes: 10-25% hydrogen peroxide, 3-15% organic acid, 2-10% alkanolamine organic base, 0.01-1.5% resist, 0.1-1% stabilizer, 0.1-3% phenolsulfonic acid, 0.1-3% ethylene oxide polymerized diol, 0.1-3% organic butyl ether, with the balance being deionized water. This invention introduces ethylene oxide polymerized diol and organic butyl ether, forming a synergistic system with alkanolamine organic base and stabilizer. This significantly improves the solubility of the stabilizer and copper ion complex, slows down its aggregation rate, and reduces its adsorption capacity on the substrate surface. Therefore, even at high copper ion concentrations, it can effectively prevent precipitation and substrate blackening, significantly extending the solution life. It is suitable for copper etching processes such as printed circuit boards and lead frames.

The invention relates to a phenolic resin foam material for filling and sealing a coal mine as well as a preparation method and application thereof, belongs to the technical field of phenolic resin materials, and solves the technical problems that the performance of the existing phenolic resin foam material cannot meet the construction requirements of underground operation of the coal mine and the national safety production industry standard and the like. Comprising a component A and a component B in a volume ratio of 4: (0.85-1.15), and the component A comprises cationic waterborne polyurethane, phenolic resin, carbonate and a foam stabilizer; and the component B comprises phenolsulfonic acid, phosphoric acid and water. The preparation method comprises the following steps: step a, preparing cationic waterborne polyurethane; b, preparing the component A; c, preparing a component B; and step d, preparing the phenolic resin foaming material. Compared with the prior art, the invention has the advantages of meeting the construction requirements of coal mine underground operation and the national safety production industry standard, being convenient for large-scale production, improving the mechanical property and safety, and the like.

The invention discloses a dry and wet membrane tank cleaning agent as well as a preparation method and application thereof. The dry and wet membrane tank cleaning agent comprises the following components: sulfuric acid, ferrous sulfate, phenolsulfonic acid, citric acid, sodium dodecyl benzene sulfonate, hydrogen peroxide and water. According to the invention, an advanced oxidation method is adopted to replace acid washing or alkali washing in the traditional technology for the first time, and the produced tank cleaning agent has extremely strong oxidation capacity, can effectively oxidize organic matters, and is suitable for dry film and green paint development processes in the PCB processing process; precipitated solids can be effectively removed, oily substances and intractable high polymer residues in dry films and green paint tanks can be removed, and the cleaning effect is very ideal. And regular tank cleaning can effectively ensure production quality and prolong the service life of instruments and equipment.

The invention provides a deplating solution. The deplating solution comprises the following components in percentage by weight: 10%-30% of sulfuric acid, 0.5%-1.5% of stannous mono-sulphate, 0.5%-2.5% of sodium sulfate, 0.5%-2.5% of a complexing agent, 0.1%-0.5% of an antioxidant, 1%-3% of a copper protection agent, 0.1%-0.5% of an additive and the balance of water, wherein the complexing agent is any one or two of sulfamic acid, methanesulfonic acid, phenolsulfonic acid and citric acid; the antioxidant is any one of resorcinol, hydroquinone and ascorbic acid; the copper protection agent is a core-shell structure corrosion inhibition microsphere, the core-shell structure corrosion inhibition microsphere takes hollow silicon dioxide as a core, the surface of the core-shell structure corrosion inhibition microsphere is grafted with benzotriazole, the outer layer of the core-shell structure corrosion inhibition microsphere is coated with a layer of pH sensitive type polymethylacrylic acid hydrogel shell, and the particle size is controlled to be 5-20 microns; the additive is any one of polyethylene glycol and gelatin. By optimizing the formula of the deplating solution and especially upgrading the copper protection agent system, efficient and lossless deplating of the tin-containing plating layer is achieved, meanwhile, the tin and copper recovery purity is improved, and the service life of the deplating solution is prolonged.

The invention belongs to the technical field of PCB (printed circuit board) processing, and discloses a composite backing plate with two sides coated with aluminum foils and a preparation method of the composite backing plate, the composite backing plate comprises a medium-density fiberboard base material, and the surfaces of the two sides of the base material are coated with the aluminum foils through phenolic resin glue. The phenolic resin glue comprises the following raw materials in parts by weight: 90-110 parts of phenolic resin, 18-25 parts of ethanol, 5-7 parts of phenolsulfonic acid, 0.5-1.5 parts of a coupling agent, 4-8 parts of modified graphite and 10-14 parts of modified lignin. According to the composite base plate with the aluminum foils attached to the two faces, the aluminum foils are attached to the surface of the medium-density fiberboard base material through the phenolic resin glue, the modified graphite and the modified lignin are added into the phenolic resin glue, the modified graphite constructs a heat-conducting insulating network, the modified lignin provides toughness support, and the modified graphite and the modified lignin cooperate with each other; the base plate is good in heat dissipation, free of layering and long in service life during high-speed drilling.

The invention relates to the field of gold-tin alloy electroplating, and discloses a gold-tin alloy electroplating solution, an electroplating method and a product. The electroplating liquid comprises a stabilizing agent, and the content of the stabilizing agent is 0.01-50 g / L; the stabilizer comprises a first stabilizer and a second stabilizer; the mass ratio of the first stabilizer to the second stabilizer is (1-10): 1; the first stabilizer comprises at least one of an ethylenediamine alkyl substituent, an ethylenediamine phenyl substituent and an ethylenediamine alkyl hydroxyl substituent; the second stabilizer is prepared from at least one of antipyrine, diantipyrine, ascorbic acid, pyrogallol, hydroquinone, phloroglucinol, trihydroxy benzene, catechol, cresol sulfonic acid, catechol sulfonic acid and hydroquinone sulfonic acid. The electroplating liquid can form an alloy composition of a stable electroplated layer in a wide current density range.

The application discloses a kind of tin stripping water additives and preparation method and use method thereof.The preparation method includes: under the condition of continuous stirring, 8-hydroxyquinoline, phenol sulfonic acid, ethanolamine, urea, sulfuric acid are added to water, finally, constant volume with water, tin stripping water additive is obtained.The application is applicable to the tin stripping process of sulfuric acid / hydrogen peroxide system, tin layer can be effectively stripped, stripping speed is fast, copper biting rate is low, copper layer is bright, and process requirements can be met;The additive can effectively prevent the ineffective decomposition of hydrogen peroxide;The additive does not contain fluoride and nitric acid;The nitrogen content of washing tank water and post-washing water is low, which can effectively alleviate the environmental protection pressure of total nitrogen and ammonia nitrogen emission standard faced by printed circuit board factory wastewater treatment station.

This invention belongs to the field of chemical product synthesis technology and discloses a method for alkylating methylphenolic compounds. Under normal pressure, methylphenolic compounds are added to a catalyst, cresolsulfonic acid, and an auxiliary agent, a ferrous salt. Isobutylene is then introduced into the reaction solution at a certain gas rate under stirring. After the reaction is complete, an alkylated compound is obtained. The phenol in the methylphenolic compound is the raw phenol, and the amount of isobutylene introduced into the reaction is 0.5-1.1 times the amount of the raw phenol. The catalyst, cresolsulfonic acid, accounts for 0.1%-1% of the amount of the raw phenol. The auxiliary agent, the ferrous salt, accounts for 0.5%-5% of the amount of the cresolsulfonic acid. This method uses a small amount of catalyst, has a short and mild reaction time, and achieves a high conversion rate.