71 results about "Linear alkylbenzene" patented technology

The invention discloses a preparation method of nitrile rubber with improved thermo-oxidative aging resistance, which comprises the following steps: butadiene and acrylonitrile are used as main polymerization monomers, and a reactive anti-aging agent with an amide group is used as a functional monomer; the total addition amount of butadiene and acrylonitrile is 100 parts by mass, and acrylonitrile is added in batches or continuously, preferably more than three times; a low-temperature emulsion polymerization method is adopted, and the compound emulsifier at least contains disproportionated rosin soap, C10-C13 linear alkyl benzene sulfonic acid and naphthalene sulfonic acid formaldehyde condensate sodium salt; the preparation method comprises the following steps of: adding a molecular weight regulator into a compound emulsifier, preferably 3.2-6.5 parts by weight, more preferably 3.8-6.0 parts by weight of the compound emulsifier, adding the molecular weight regulator once or multiple times, synthesizing butyronitrile rubber cement, adding a terminating agent, degassing, condensing, washing and drying to obtain the butyronitrile rubber. According to the invention, the nitrile rubber with good thermo-oxidative aging resistance is produced, wherein the content of bound acrylonitrile is 17-20%, and the binding amount of Mooney viscosity # imgabs0 # reactive anti-aging agent is 1-2%.

The invention discloses an AES concentrated formula with high-activity components and a preparation method of the AES concentrated formula. The invention discloses an AES (acrylonitrile-ethylene-propylene-diene monomer styrene) water-based detergent which comprises the following components in percentage by weight: 25%-35% of AES, 8%-12% of sodium n-alkyl benzene sulfonate, 5%-8% of alkyl glycoside, 4%-6% of cocamidopropyl betaine, 18%-28% of a composite chelating agent, 2%-4% of sodium chloride, 0.3%-0.5% of EDTA (Ethylene Diamine Tetraacetic Acid)-disodium, 0.5%-1% of sodium benzoate, 3%-5% of propylene glycol and the balance of deionized water. AES is used as a main surfactant, and forms a ternary compound system with sodium n-alkyl benzene sulfonate, alkyl glycoside and cocamidopropyl betaine. Through the synergistic effect of the surfactants of different ion types, the critical micelle concentration (CMC) and the micelle aggregation number are remarkably improved, so that the active ingredients can form a stable micelle structure at a lower concentration, and the dirt-removing power and the foaming performance are improved. Sodium tripolyphosphate, sodium pyrophosphate and sodium citrate form a composite chelating agent, the chelating capacity of the composite chelating agent on Ca < 2 + >, Mg < 2 + > and other metal ions is larger than or equal to 300 mgCaCO3 / g, the inhibition effect of hard water on a surfactant can be effectively eliminated, and the stability of the formula under different water quality conditions is enhanced.

A surfactant composition comprising a mixture of linear alkyl benzene sulfonates (LAS) surfactants having hydrocarbon chains of different lengths, wherein 50 % by weight or more of the linear alkyl benzene sulfonates contain a hydrocarbon chain derived from saturated or unsaturated fatty acids with 12 carbon atoms, can be obtained using Litsea seed oil as a source of the hydrocarbon chain and may be used in laundry detergents, cleaning compositions, hair care compositions or dishwashing detergents.

The application relates to the technical field of synthetic rubber, in particular to a nitrile rubber, a preparation method and application thereof, wherein the preparation method adopts at least potassium saponification soap and / or sodium saponification soap of disulfated rosin acid, C 10 -C 13 A composite emulsifier system composed of linear alkyl benzene sulfonic acid and naphthalene sulfonic acid formaldehyde condensate sodium salt and a low-temperature emulsion polymerization process, and the obtained nitrile rubber can be used in the field of oil-resistant sealing in a hydraulic oil operation environment.

The invention discloses a reagent containing amino-oligosaccharin and indoleacetic acid and a preparation method and application thereof.According to the reagent, amino-oligosaccharin and indoleacetic acid are compounded according to a specific proportion, the two components form an efficient synergistic system, ginger root development is remarkably promoted, stress resistance is improved, and the effect of preventing and treating ginger root knot nematode diseases is achieved; by adding a functional auxiliary agent, sodium n-alkyl benzene sulfonate, rhamnolipid and N-hydroxysuccinimide are used as components of the functional auxiliary agent, so that the functional auxiliary agent can be chelated with indoleacetic acid to fix and delay degradation of the indoleacetic acid in soil, and the surface tension of a solution interface can be reduced; the dispersion and stability of the effective components in the reagent in the system are promoted, and a proper amount of penetration enhancer and stabilizer are also added, so that the photolysis and oxidation of the indoleacetic acid are reduced, the activity in the storage and use process is improved, and the application of the active components is more facilitated.

The utility model relates to a device for producing straight-chain alkylbenzene, which comprises a deoxidation unit communicated with a triglyceride feeding pipeline; the C9-C14 pipeline and the C14 + pipeline are communicated with the deoxidation unit; a separate straight-chain selective cracking unit in communication with the C14 + line; a first line and a second line; the single linear-chain selective cracking unit is communicated with a single linear-chain selective cracking unit; the purification unit is communicated with the first pipeline; a first purification line communicating with the purification unit; the dehydrogenation unit is communicated with the first purification pipeline; a dehydrogenation line communicating with the dehydrogenation unit; a selective hydrogenation unit in communication with the dehydrogenation line; a monoolefine line in communication with the selective hydrogenation unit; an alkylation unit in communication with the monoolefine line; and an alkylation effluent line in communication with the alkylation unit. According to the utility model, alkylbenzene is produced from triglyceride, wherein some triglyceride can produce a large amount of n-paraffin with 16-24 carbon atoms after dehydrogenation.

Processes for producing mono-methyl alkylbenzenes from natural oils are described. The processes includes a linear selective cracking process to crack C14+ chains into C9 to C14 chains which are useful for making linear alkylbenzene for use in detergents and a hydroisomerization step to produce paraffins with mono-methyl branching which can be reacted with benzene to form the mono-methyl alkyl benzenes.

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.

The present invention relates to a fabric care composition that has linear alkylbenzene sulphonate (LAS), enzyme; and a specific alkoxylated polyol.

A detergent composition can include a cleaning composition including: (a) linear alkyl benzene sulphonate surfactant; (b) alkyl ethoxylated sulphate surfactant; and (c) alkoxylated polymer.

A solid detergent composition comprising a plurality of detergent granules in a format of agglomerates, extruded particles or flakes, wherein each of said detergent granules comprises a surfactant system and precipitated calcium carbonate, wherein said detergent granules are characterized by a surfactant system content ranging from 5% to 90% and a precipitated calcium carbonate (PCC) content ranging from 0.1% to 15%, by total weight of said detergent granules, wherein said surfactant system comprises a C10 -C20 linear alkyl benzene sulphonate (LAS), wherein the weight ratio of LAS to PCC is from 2.1 to 15, wherein said detergent granules comprise less than 2%, by total weight of said detergent granules, of an additional flow aid which is selected from the group consisting of aluminosilicates, silicon dioxide, bentonite, clay, ground sodium carbonate, carboxymethyl cellulose (CMC) and any combinations thereof, wherein the surfactant system and the precipitated calcium carbonate are present in a form of mixture within the detergent granules. A method of making the solid detergent composition is also disclosed.

The invention belongs to the technical field of preparation of industrial catalysts, and discloses a catalyst for dehydrogenation of long-chain alkane containing rare earth metal as well as preparation and application of the catalyst. According to the catalyst, a specific type of rare earth metal is introduced as an electronic and structural cocatalyst, so that the selectivity of the catalyst to straight-chain monoolefine is remarkably improved, and the carbon deposition resistance and the thermal stability of the catalyst are greatly enhanced, thereby prolonging the service life and the regeneration period of the catalyst. The preparation method of the catalyst is simple in process and easy for industrial production, and can realize highly uniform dispersion of the active component and the auxiliary agent on the carrier. The catalyst is a long-chain alkane dehydrogenation catalyst which still has high activity, high selectivity and high stability under the condition of low platinum loading capacity (0.15%). The method has the advantages that side reaction and carbon deposition generation can be effectively inhibited, the service life is remarkably prolonged, and the method has important industrial application value for reducing the production cost of the linear alkylbenzene and improving the product quality.

The invention provides a multifunctional alkylbenzene production system which is used for producing straight-chain alkylbenzene or polysubstituted alkylbenzene, and relates to the technical field of alkylbenzene production. The device comprises an alkylation reaction device, a hydraulic turbine, a debenzolization tower, a light component removal tower and a heavy component removal tower, materials obtained through reaction of the alkylation reaction device are connected into the hydraulic turbine, and an outlet of the hydraulic turbine is connected into the debenzolization tower or the light component removal tower. When straight-chain alkylbenzene is produced, an outlet of the hydraulic turbine is connected into the debenzolization tower, materials at the bottom of the debenzolization tower are connected into the light component removal tower, materials at the bottom of the light component removal tower are connected into the heavy component removal tower, and an alkylbenzene product is extracted from a side line of the heavy component removal tower; when polysubstituted alkylbenzene is produced, an outlet of the hydraulic turbine is connected into the light component removal tower, materials at the bottom of the light component removal tower are divided into two streams, one stream is connected into the benzene removal tower, the other stream is connected into the heavy component removal tower, and an alkylbenzene product is extracted from a side line of the heavy component removal tower. The method is designed according to the characteristics of an alkylbenzene synthesis process, and has the characteristics of short flow, continuous operation, comprehensive heat recycling, low energy consumption and diversified production.

The present invention provides a process for producing linear alkylbenzenes from an alkane feed with improved yields due to the use of a novel catalyst, the process having a reduced selectivity to produce undesirable aromatic compounds. In some embodiments, the process can now be operated without a unit for removing such aromatic compounds, allowing an operator of the plant to modify the process to increase product yields.

The invention discloses a liquid composition aiming at yellowing of white clothes and application of the liquid composition in a clothes detergent, and particularly relates to the field of daily chemical washing, and the liquid composition is prepared from the following components in parts by mass: 8-15 parts of a structure modified surfactant, 7.8-23.5 parts of other surfactants, 0.3-1 part of a targeted enzyme preparation and 0.5-2 parts of a composite chelating agent; the structure modification surfactant is hydroxyl modified linear alkyl sodium benzenesulfonate; the detergent prepared according to the formula is excellent in whiteness, fabric fiber wear resistance, tensile strength and the like, can effectively prevent white clothes from yellowing, does not damage fabric fibers, meets market requirements and prolongs the service life of the clothes.

The invention discloses a preparation method of oil-resistant nitrile rubber, which comprises the following steps: by taking butadiene and acrylonitrile as polymerization monomers, reacting the polymerization monomers by adopting a high-temperature emulsion polymerization method based on 100 parts by mass of the total amount of the polymerization monomers, and preparing the oil-resistant nitrile rubber by using a compound emulsifier, the compound emulsifier at least contains disproportionated rosin soap, linear alkyl benzene sulfonic acid, naphthalene sulfonic acid formaldehyde condensate sodium salt and butadiene, the pH value of a polymerization system is controlled to be 9.3-11.5, more preferably 10.0-11.0, the required butyronitrile rubber cement is synthesized, the terminating agent and the anti-aging agent are added, and the butyronitrile rubber cement is prepared. And degassing, condensing, washing and drying to obtain the nitrile rubber. According to the preparation method of the oil-resistant nitrile rubber, the oil-resistant nitrile rubber with the combined acrylonitrile content of 45-50%, the Mooney viscosity # imgabs0 # tensile strength of more than or equal to 27.5 MPa and the elongation at break of more than or equal to 450% can be prepared.

The invention discloses a method for removing 2, 5-diphenyloxazole in linear alkylbenzene and application thereof.The linear alkylbenzene containing 2, 5-diphenyloxazole is subjected to shallow sulfonation in the presence of catalysts such as a 4A molecular sieve, activated carbon, kaolin and bentonite at the temperature of 0-30 DEG C, the content of 2, 5-diphenyloxazole in the linear alkylbenzene can be reduced to 6 ppm or below from 3000 ppm through simple filtration, and the 2, 5-diphenyloxazole in the linear alkylbenzene can be reduced to 6 ppm or below. And sulfonating through an SO3 membrane reactor to obtain an alkyl benzene sulfonic acid superior product.

This provides a flexible and dissolvable solid sheet article containing a PVA polymer or copolymer having a weight average molecular weight of from 50,000 to 400,000 Daltons and a major surfactant selected from the group consisting of C6-C20 linear alkylbenzene sulfonates (LAS), alkoxylated sodium trideceth sulfates (STS), and combinations hereof.

Detergent compositions include peptides, anionic surfactants, non-ionic surfactants, and water. The peptides are designed to enhance cleaning efficiency and textile care. The peptides included in the composition have binding domains with a high affinity for textiles and amino acids susceptible to oxidation, which serve as effective chlorine scavengers, thereby preserving fabric color and enhancing enzyme cleaning performance. Additional components may include a linking domain, a fatty acid, a strong base, a weak acid, an anti-redeposition polymer, a preservative, a chelating agent, and a linear alkyl benzene sulfonic acid.

The invention discloses a hard-water-resistant low-foam LAS surfactant and a preparation process thereof. The cleaning agent comprises the following components in percentage by mass: 30-40% of linear alkylbenzene sulfonate, 10-15% of fatty alcohol-polyoxyethylene ether carboxylate, 8-12% of fatty acid methyl ester ethoxylate sulfonate, 2-5% of an organic silicon polyether defoaming agent, 5-8% of a chelating agent, 3-6% of a cosolvent, a pH regulator for regulating the pH of a system to 7-8.5 and the balance of deionized water, through the synergistic effect of various chelating agents and the surface active component with chelating ability, calcium and magnesium ions in hard water can be effectively chelated, and the influence of the calcium and magnesium ions on the surfactant is remarkably reduced, so that the surfactant can still keep relatively high activity and stability in a hard water environment, and the decontamination effect is good. In hard water with the calcium and magnesium ion concentration of 500 mg / L, the detergency of the surfactant can still be kept at 90% or above. The organic silicon polyether defoaming agent is matched with the low-foam surface active component, so that quick defoaming and effective foam inhibition can be realized, and the foam height is obviously lower than that of the traditional LAS surface active agent.

A liquid laundry composition having from about 6% to about 50%, by weight of the laundry composition, of a surfactant component. The surfactant component having from about 0.5% to about 30%, by weight of the laundry composition, of an HLAS surfactant selected from alkyl benzene sulfonic acids, alkali metal or amine salts of C10-16 alkyl benzene sulfonic acids, wherein the HLAS surfactant comprises greater than 50% C12.

The invention provides a method for steam development of a heavy oil reservoir through a high-temperature-resistant oil-displacing agent, and relates to the technical field of oilfield development. The method comprises the steps that water is added into a high-temperature-resistant oil-displacing agent to prepare a high-temperature-resistant oil-displacing agent solution, and then the high-temperature-resistant oil-displacing agent solution is continuously injected into a steam injection well in the steam flooding exploitation process of the heavy Wherein the high-temperature-resistant oil displacement agent is prepared from the following raw materials in parts by weight: 35 to 50 parts of linear alkylbenzene sulfonate, 10 to 15 parts of fatty alcohol-polyoxyethylene ether, 2 to 5 parts of lignin and 3 to 8 parts of amino-terminated polyurethane modified TiO2. Compared with traditional steam flooding, the high-temperature-resistant oil displacement agent is used for assisting steam development, the swept area can be increased, and the recovery efficiency can be effectively improved.

A water soluble unit dose article comprising a concentrated laundry detergent composition wherein the laundry detergent composition comprises: 45% to 65%, by weight of the composition, of a non-soap surfactant comprising an anionic non-soap surfactant and a non-ionic surfactant, wherein the anionic non-soap surfactant comprises a linear alkylbenzene sulfonate; from 1% to 6% by weight of the composition of a fatty acid; from 5% to 20% by weight of the composition of an organic solvent; and 5% to 25% water by weight of the composition wherein the nonionic surfactant comprises an alcohol alkoxylate surfactant and the weight ratio of the non-soap anionic surfactant to the nonionic surfactant is less than 2: 1.

A liquid composition comprising (A) linear alkyl benzene sulphonate, (B) methyl ester ethoxylate and (C) further anionic surfactant, wherein the wt. ratio (C) / (A) is from 1 to 0, and the wt. ratio (B) / (A)+(B) is from 0.2 to 9, and from 0.5 to 10% wt. alkoxylated zwitterionic di- or polyamine polymer, wherein the level of surfactant in the formulation is from 10 to 60 wt %.

The present invention relates to a solid laundry composition. It particularly relates to a solid laundry composition having a desirable foam profile during the laundering process. There remains a need for a solid laundry composition which is an environmentally friendly composition and includes lowered levels of synthetic detergents while providing desired foaming profile. It is an object of the present invention to provide a solid laundry composition which provides good foam profile and good cleaning performance. The present inventors have found that a solid laundry composition having 0 wt.% linear alkyl benzene sulphonate surfactant when present in combination with specific surfactant of general formula (Ia) or (Ib) and / or general formula (IIa) or (IIb) and alkali metal carbonate surprisingly provides good foam profile and good cleaning performance. The foam profile involves formation of good foam in the wash stage while eliminating the foam quickly during the rinsing stage. This benefit was preferably found across different consumer washing habits and fabric types present in the wash load.

A method of treating a pyrolysis oil including feeding pyrolysis oil and an aromatic to a reactor to perform an alkylation reaction in the reactor with a catalyst is provided. The alkylation reaction produces linear alkylbenzenes to be fed to an extractor, where the linear alkylbenzenes and excess aromatic are extracted and fed to a separator. The separator then separates the linear alkylbenzenes from the excess aromatic.

To provide a laundry detergent composition containing a dye fixative and an anionic surfactant such as a linear alkylbenzene sulfonate which is capable of effectively preventing color fading or color bleeding.SOLUTION: A laundry detergent composition includes a dye fixative, a nonionic surfactant system, and an anionic surfactant system including a C6 to C20 linear alkylbenzene sulfonate (LAS), wherein the weight ratio of the nonionic surfactant system to the anionic surfactant system is at least 1.5. The laundry detergent composition characterized by the weight ratio of the nonionic surfactant system to the anionic surfactant system being at least 1.5 enables an effective color protection for colored fabrics.SELECTED DRAWING: None

An aqueous liquid detergent composition is disclosed. The aqueous liquid detergent composition having suds compatibility and improved cleaning. The composition has from about 1% to about 60%, by weight of the composition, from about 0.001% to about 4.0%, by weight of the composition, of an anti-foam selected from organomodified silicone polymers with aryl or alkylaryl substituents combined with silicone resin and a primary filler, which is modified silica, and from about 0.01% to about 2.5%, by weight of the composition, of a structurant, wherein the structurant is selected from: crystalline, hydroxyl-containing stabilizers, polymer gums, and mixtures thereof. The surfactant system includes linear alkylbenzene sulfonate and between 1% and 30% by weight of alkyl ethoxylated sulfate surfactant. The ratio of linear alkylbenzene sulfonate to alkyl ethoxylated sulfate surfactant is between 1.1:1 to 10:1.

The present disclosure provides a method for preparing a coal-based linear alkylbenzene, wherein the coal-based linear alkylbenzene is prepared by an alkylation reaction using a coal-based Fischer-Tropsch synthetic oil and a benzene as reaction raw materials and using a molecular sieve loaded with a strong acid cation exchange resin as a catalyst; the strong acid cation exchange resin has an acid strength ≥0.9 mmol / g [H+]; and the coal-based Fischer-Tropsch synthetic oil comprises a linear olefin with a carbon number range of C9-C13. In the present disclosure, the strong acid cation exchange resin is loaded into pores and onto a surface of the molecular sieve, which has better effect on the selectivity to the alkylbenzene product. The product has a high straight chain ratio, has a high selectivity for 2-position substitution, and may maintain a relatively high olefin conversion rate, thereby significantly increasing the lifetime of the catalyst.

The invention discloses a grinding aid for efficiently preparing limestone powder and a preparation method of the grinding aid, and belongs to the technical field of limestone powder preparation. The grinding aid is prepared from the following raw materials: 10-30 parts of phosphate amine salt, 1-5 parts of sodium n-alkyl benzene sulfonate, 1-3 parts of ionic liquid, 1-5 parts of La < 3 + > doped CeO2 nanoparticles, 1-3 parts of a permeation component, 5-15 parts of a dispersion component and 40-80 parts of water. Wherein the phosphate amine salt is dodecyl phosphate diethanolamine salt, the linear alkyl sodium benzene sulfonate is sodium tetradecyl benzene sulfonate, the ionic liquid is 1-butyl-3-methylimidazole bis (trifluoromethanesulfonyl) imide salt, the permeation component is sec-octyl alcohol polyoxyethylene ether, and the dispersion component comprises dipropylene glycol and dimethylethanolamine. The invention relates to 2-amino-2-methyl-1-propanol and a preparation method thereof. According to the grinding aid disclosed by the invention, through the synergistic effect of various components, the grinding aid is fully mixed with limestone and permeates into surface gaps of the limestone, so that the surface tension is effectively reduced, the crack propagation is promoted, the limestone powder fineness is improved, the grinding efficiency is improved, and the grinding energy consumption is reduced.