110 results about "Sulfur chloride" patented technology

The present invention relates to a rubber composition for a sidewall, a clinch and an insulation comprising 20 to 60 parts by mass of filler, 1.0 to 4.0 parts by mass of sulfur and 0.1 to 10 parts by mass of at least one vulcanization accelerating aid selected from a group comprising a citraconimide compound, an organic thiosulfate compound, an alkylphenol-sulfur chloride condensate, a compound represented by the formula (2) and a metal salt of methacrylic acid represented by the formula (3), based on 100 parts by mass of a diene rubber component comprising 10 to 70% by mass of at least one diene rubber component (a) selected from a group comprising a solution polymerization-modified styrene-butadiene rubber, a tin-modified butadiene rubber and a butadiene rubber whose terminal is modified with a compound represented by the formula (1), and 20 to 80% by mass of a diene rubber component (b) other than the diene rubber component (a) for the purpose of improving rolling resistance and steering stability.

The invention discloses a preparation method of 3,5-dimethyl-4-chlorophenol, which takes tetrachloroethylene as a solvent, benzyl thiophenol and aluminium chloride as cocatalysts, sulfuric chloride as a chloridizing agent, orientation chlorination is carried out through two phases of low-temperature chlorination and high-temperature chlorination, the mass ratio of tetrachloroethylene to MX is 0.5-4: 1; the mass ratio of the cocatalyst to MX is 2.5-6.5:1000; at low temperature chlorination phase, the mass ratio of sulfuric chloride dropping amount to MX is 0.9-1.2: 1; at high temperature chlorination phase, the mass ratio of sulfuric chloride dropping amount to MX is 0.1-0.2: 1; the temperature at the low temperature chlorination phase is controlled at 30-45 DEG C, chlorination is carried out for 4-6 hours; the temperature at high temperature chlorination phase is controlled at 50-65 DEG C, and chlorination is carried out for 1-2 hours, insulation reaction is carried out after the dropping process of sulfuric chloride is completed, tail gas is removed for 1-2 hours, and steps of water-washing layering, cooling and crystallizing, centrifuging and washing, and drying to obtain the product. According to the method, the conversion rate can reach more than 95%, finished product PCMX yield is increased, and the by-product can be effectively reduced.

There is provided a rubber composition for a bead apex which can enhance extrusion processability by optimizing a rate of vulcanization during a vulcanization process, and can improve rigidity, steering stability and a low fuel consumption property, a tire having a bead apex prepared by using the rubber composition for a bead apex and being capable of enhancing steering stability and reducing rolling resistance and a tire for a sports utility vehicle (SUV) having further enhanced durability. The rubber composition for a bead apex comprises a diene rubber, a phenol resin and/or a modified phenol resin, sulfur, hexamethylenetetramine, a vulcanization accelerator, and at least one kind of vulcanization acceleration auxiliary selected from the group consisting of a citraconimide compound, a condensate of alkyl phenol and sulfur chloride, an organic thiosulfate compound and a compound represented by the general formula: R¹—S—S-A-S—S—R².

The invention relates to a method for recovery and purification of sulfoxide chloride in acyl chloride production, which comprises the following steps of: implementing primary purification by a distilling way; converting sulfur dichloride which is difficult to separate into sulfur chloride which is easy to remove by sulfur powder; and adsorbing other colored components by active carbon; and obtaining pure sulfoxide chloride which reaches three-level color degree. The method disclosed by the invention can effectively recover the sulfoxide chloride, and is high in recovery rate, good in quality, safe in process and easy in control; the purified sulfoxide chloride can reach 98.5% in purity and three-level color degree in color.

The invention provides sulfur chlorinated isobutylene production equipment, comprising an enamel gas liquid reaction kettle and a falling film absorption tower. According to the technical main points, the enamel gas liquid reaction kettle comprises an upper sealing head, a kettle body and a stirring shaft; a stirring blade is arranged on the stirring shaft; a jacket is arranged outside the kettle body; a cooling liquid inlet and a liquid outlet are arranged on the jacket; the upper sealing head is connected with the kettle body together; a feeding opening and an air exhaust opening are arranged at the upper part of the kettle body; the air exhaust opening is communicated with the falling film absorption tower; a discharging opening is arranged at the center of the bottom of the kettle body; an air inlet pipe is arranged at the bottom of the kettle body; and three to five air inlet pipes are uniformly and coaxially distributed on the rim of the discharging opening. The sulfur chlorinated isobutylene production equipment provided by the invention has the advantages that single sulfur chloride and isobutylene can be subjected to multipoint reaction, so that the reaction process tends to be stable, the reaction temperature is easy to control, side product amount can be reduced, the reaction time is shortened, the yield can be improved, and the production cost can be reduced; the isobutylene has sufficient reaction time, so that the raw materials can be prevented from being wasted; and the defects that the enamel has low toughness, is easy to break and the like can be overcome without arranging an individual air exhaust annular pipe, so that the occurrence of the safe accident can be avoided.

The invention relates to a differential pressure thermal coupling rectification method and equipment for sulfoxide chloride. According to the equipment, a heavy component removing tower of a re-boiler is arranged at the bottom of a tower and a light component removing tower of a condenser is arranged at the top of the tower; a condensation re-boiler, an auxiliary condenser and a conversion reactor are arranged between the heavy component removing tower and the light component removing tower. An extract of a vapor-phase material at the top of the heavy component removing tower is divided into two parts, wherein one part is connected with a heating medium inlet of the condensation re-boiler, a heating medium outlet is connected with the auxiliary condenser and then returns back to the top of the heavy component removing tower, a liquid-phase material outlet at the bottom of the light component removing tower is connected with a heated medium inlet of the condensation re-boiler, and then a heated medium outlet returns back to the bottom of the light component removing tower; the other part is connected with the conversion reactor to carry out a reaction of converting sulfur dichloride to sulfur chloride, and a reacted material vapor phase enters the light component removing tower. The differential pressure thermal coupling is used for coupling heat at the top of the heavy component removing tower and heat at the bottom of the light component removing tower and the energy consumption is saved. The difficulty of blocking a pipeline by sulfur is overcome. A practical example shows that a differential pressure thermal coupling rectification process can save energy by more than 50% compared with a conventional process.

A rubber composition for cap tread satisfying both of low heat build-up property and fracture strength and a tire having cap tread using the same are provided. A rubber composition for cap tread including 0.5 to 10 parts by mass of an alkylphenol-sulfur chloride condensate (B) indicated by the formula (B1):

(wherein R¹ to R³ are same or different, either is an alkyl group having 5 to 12 carbons; x and y are same or different, and either is an integer of 2 to 4; n is an integer of 0 to 10.), 0 to 0.45 parts by mass of sulfur (C), and 10 to 100 parts by mass of silica (D), based on 100 parts by mass of a specific rubber component (A).

For the purpose of improving rolling resistance and durability, the present invention provides a rubber composition for insulation of a tire comprising 0.2 to 4 parts by mass of (B) an alkylphenol-sulfur chloride condensate, and 20 to 59 parts by mass of (C) carbon black having a BET specific surface area of 25 to 50 m²/g based on 100 parts by mass of (A) a rubber component comprising 30 to 85% by mass of (a1) a natural rubber and/or an isoprene rubber, 0 to 70% by mass of (a2) at least one styrene butadiene rubber selected from the group consisting of an emulsion-polymerized styrene butadiene rubber, a solution-polymerized styrene butadiene rubber and a modified styrene butadiene rubber, and 0 to 60% by mass of (a3) a butadiene rubber, and a tire having insulation prepared from the rubber composition.

The invention discloses a high and low temperature resistant asphalt added with cetyl alcohol modifier and a processing method thereof. The high and low temperature resistant asphalt is made of base asphalt, styrene-butadiene rubber, powdered sulfur chloride, montmorillonite, linolenic acid, glycerin aqueous solution, and cetyl alcohol. First, the base asphalt is heated, and then linolenic acid and powdered chlorine are added. Sulfur, styrene-butadiene rubber, montmorillonite, and asphalt are modified, and then through a high-speed grinding process, after the dispersion is uniform, glycerin aqueous solution and cetyl alcohol modifier are added to further modify its stability. Finally, the product can be obtained after cooling down and developing in the later stage. The prepared modified asphalt product is not prone to delamination, and the processing flow is short, so it has a good application prospect.