10 results about "Linear alkylbenzene" patented technology

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.

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.

The present application relates to the technical field of molecular sieve preparation, and discloses a modified molecular sieve and a preparation method and application thereof.A modified molecular sieve, wherein the modified molecular sieve comprises a molecular sieve and a rare earth element, the modified molecular sieve has a beta cage and a supercage structure, the R value of the modified molecular sieve is 10-35%, and the K value of the modified molecular sieve is 1-20; wherein the R value represents the mass fraction of the rare earth element in the modified molecular sieve in terms of an oxide, and the K value represents the ratio of the content of the rare earth element in the beta cage to that in the supercage. The modified molecular sieve is loaded with a relatively large amount of the rare earth element, and the distribution of the rare earth element in the beta cage and the supercage is regulated, so that the performance of the molecular sieve in an alkylation reaction is improved, and the molecular sieve exhibits excellent performance in catalytic synthesis of a linear alkylbenzene target product in a molecular sieve alkylation reaction.

This invention belongs to the field of component quantitative analysis technology and discloses a quantitative analysis method for the main components of insulating media, including the following steps: S1, extraction and concentration of the sample to be tested; S2, establishment of a multiple reaction monitoring (MRM) analysis method based on GC-MS / MS; S3, detection according to the MRM analysis method to qualitatively confirm each component in the linear alkylbenzene mixed oil; S4, establishment of a standard curve using the external standard method, and calculation of the content of the target component in the sample to be tested using the standard curve. This invention uses GC-MS / MS technology, combined with MRM acquisition mode, retention time and characteristic ion abundance ratio as dual qualitative standards, and establishes a standard curve for quantitative analysis of the target components. The method demonstrates good separation effect, strong anti-interference ability, and accurate analytical results for the main components of the linear alkylbenzene mixed oil.

This invention relates to solid particles of a linear alkylbenzene sulfonate anionic detergent surfactant. These particles contain a polycationic salt of linear alkylbenzene sulfonic acid having both magnesium and sodium cations. The weight ratio of the magnesium salt of linear alkylbenzene sulfonic acid to the sodium salt of linear alkylbenzene sulfonic acid is in the range of 0.6:1 to 9:1.

The application relates to the technical field of synthetic rubber, in particular to a nitrile rubber and a preparation method and application thereof. 10 ‑C 13 The composite emulsifier system is composed of linear alkyl benzene sulfonic acid and naphthalene sulfonic acid formaldehyde condensate sodium salt, and a high-temperature emulsion polymerization process is adopted, so that the obtained nitrile rubber has high tensile strength.

Processes for converting Fischer-Tropsch products into linear alkyl benzene (LAB) are described. By selecting a portion of the Fischer-Tropsch product stream, it can be fed to the alkylation reaction zone. Some pretreatment steps can be eliminated or reduced. Unreacted paraffins can be dehydrogenated and recycled to the alkylation reaction zone.

Processes for converting Fischer-Tropsch products into linear alkyl benzene (LAB) are described. By selecting a portion of the Fischer-Tropsch product stream, it can be fed to the alkylation reaction zone. Some pretreatment steps can be eliminated or reduced. Unreacted paraffins can be dehydrogenated and recycled to the alkylation reaction zone.

The utility model relates to a device for dehydrogenating normal paraffin into olefin, for the production of linear alkylbenzene, the device includes: deoxidation unit (110), it communicates with triglyceride feed pipeline (105), C9 to C14 pipeline (115) and C14+ pipeline (120), wherein C9 to C14 pipeline (115) and C14+ pipeline (120) communicate with deoxidation unit (110), first adsorbent bed, which contains the first adsorbent including alkali metal cation or alkaline earth metal cation exchange X-zeolite, communicate with first pipeline (130), purification pipeline (145), which communicates with the first adsorbent bed, dehydrogenation unit (150), which communicates with purification pipeline (145), dehydrogenation pipeline (155), which communicates with dehydrogenation unit (150).

The application discloses a preparation method of nitrile rubber with improved low-temperature resistance, which comprises the following steps: using butadiene and acrylonitrile as polymerization monomers, continuously adding acrylonitrile in batches, preferably adding more than three times; using a low-temperature emulsion polymerization method, and adding a composite emulsifier which at least contains disulfated rosin acid soap, C 10 ~C 13 linear alkyl benzene sulfonic acid, naphthalene sulfonic acid formaldehyde condensate sodium salt; preferably, the adding amount of the composite emulsifier is 2.5-5.0 parts, more preferably 2.8-4.0 parts, the molecular weight regulator is added once or more times, the nitrile rubber paste is synthesized, a terminator is added, and the nitrile rubber is prepared after degassing, coagulation, washing and drying. The nitrile rubber with acrylonitrile content of 17-20% and Mooney viscosity of 40-70 and good low-temperature resistance is produced.