423 results about "Tert-butylbenzene" patented technology

Improved polypropylene fibers exhibiting greatly reduced heat- and moisture-shrink problems and including certain compounds that quickly and effectively provide rigidity to the target polypropylene fiber after heat-setting are disclosed herein. In such a manner, the "rigidifying" compounds provide nucleation sites for polypropylene crystal growth. After drawing the nucleated composition into fiber form, the fiber is then exposed to sufficient heat to grow the crystalline network, thus holding the fiber in a desired position. The preferred "rigidifying" compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as sodium beuzoate, certain sodium and lithium phosphate salts (such as sodium 2,2'-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11).

The invention discloses allyl para-tert-butyl phenyl ether formaldehyde tackifying resin and a preparation method thereof. The preparation method comprises the following steps: mixing para-tert-butyl phenol with formaldehyde at the molar ratio of 1:1, increasing the temperature to 80-120 DEG C, adding hydrochloric acid till the boiling of reaction lasts for 3-5 hours, using toluene to dissolve, washing with hot water till neutrality, mixing the obtained resin with allyl chloride at the molar ratio of (3-1):(0.5-2), using ethanol to dissolve, further adding potassium hydroxide to regulate the pH to 8-10, heating for 30-90 minutes, then using the toluene to extract, washing with distilled water till the neutrality, and performing reduced pressure distillation so as to get an allyl para-tert-butyl phenyl ether formaldehyde resin purified product. The product has higher self-adhesion strength and excellent long-acting tackifying capability.

The invention relates to a dielectric rubber body for packaging a sensor. The dielectric rubber body is characterized in that the formula thereof comprises 60-70 parts of chlorinated butyl rubber, 10-20 parts of butadiene styrene rubber, 20-30 parts of natural rubber, 20-30 parts of light calcium carbonate, 30-40 parts of carbon black, 5-10 parts of conductive carbon black, 1-3 parts of stearic acid, 2-5 parts of magnesium oxide, 1-5 parts of octyl phenol-phenolic resin, 3-6 parts of zinc oxide, 1-3 parts of N-tertiary butyl-2-benzothiazole sulfenamide, 0.5-2 parts of tetramethyl thiuram disulfide, and 0.5-2 parts of insoluble sulphur. The dielectric rubber body disclosed by the invention is used for a conductive radiofrequency device in tire; the device comprises a radio assembly and an antenna, and can be used for tracking and recording data during manufacturing, sales and use; and the measurement range covers temperature, pressure or other physical parameters in tire. During the loading process of a sensor, the conductive material with a certain dielectric constant and a certain adhesive force disclosed by the invention is chosen, so that the device can be firmly connected with a tire and can be used for transmitting data more stably; simultaneously, via high elasticity and good mechanical property of rubber, the device can withstand the stress brought by cyclic deformation of the tire excellently.

A method for the synthesis of 1,3-di(chloropropyl)-5-tert-butyl benzene includes the steps of conducting Friedl-Crafts alkylation of 1,3-diisopropyl benzene by tert-butyl chloride in the presence of an alkylation catalyst to obtain 1-tert-butyl-3,5-diisopropylbenzene; peroxidizing the 1-tert-butyl-3,5-diisopropyl benzene by gaseous oxygen in the presence of a peroxidation catalyst in a basic solution to obtain 1,3-di(peroxypropyl)-5-tert-butylbenzene; reducing the 1,3-di(peroxypropyl)-5-tert-butylbenzene with a reducing agent to 1,3-di(hydroxylpropyl)-5-tert-butylbenzene; and chlorinating the 1,3-di(hydroxypropyl)-5-tert-butylbenzene to obtain 1,3-di(chloropropyl)-5-tert-butyl benzene.

The invention discloses a preparation method of environment-friendly dimethyl carbonate diesel for an automobile. The environment-friendly dimethyl carbonate diesel comprises the following components by weight percent: 50-300ppm of 2,6-tertiary butyl p-cresol, 10-200ppm of tris(2,4-ditert-butyl phenyl) phosphite, 10-200ppm of thiadiazole or benzotriazole, 10-500ppm of isooctyl nitrate or ethyl nitrate, 100-500ppm of lubricity improver, 9.982-29.83% of dimethyl carbonate and 70-90% of diesel. The preparation method comprises the following steps of: adding various additives into dimethyl carbonate and then mixing to obtain a dimethyl carbonate solution I; and then mixing the dimethyl carbonate solution I and dimethyl carbonate with the diesel to obtain the dimethyl carbonate diesel. The dimethyl carbonate diesel disclosed by the invention has the advantages of good stability, corrosion resistance and environmental protection performance, can be intersoluble with the diesel in any proportion, and is simple to prepare, low in cost and strong in competitive power.

The invention relates to a solar photovoltaic backing composite and a preparation method thereof and belongs to the technical field of the composites. The solar photovoltaic backing composite is prepared from the following raw materials in parts by mass: 10-25 parts of carbon nanotubes, 10-16 parts of PBT, 2-6 parts of maleic anhydride grafted ethylene propylene diene monomer, 5-10 parts of high-density polyethylene, 2-6 parts of ABS, 2-5 parts of glyceryl tristearate, 1-3 parts of silicone powder, 2-9 parts of citric acid, 2-4 parts of tri[2,4-di-tert-butylphenyl] phosphite, 2-5 parts of silicon carbide fibers and 1-3 parts of gamma-methylacryloxypropyltrimethoxy silane. The solar photovoltaic backing composite has excellent mechanical properties and weather fastness; and the obtained composite also has excellent water vapor barrier property and is capable of effectively protecting a solar cell.

The invention relates to a method for preparing aldehyde through olefin hydroformylation. The method comprises the steps: enabling alpha-olefin and synthesis gas to enter a hydroformylation reactor; carrying out a contact reaction on alpha-olefin and synthesis gas with a catalyst to generate an aldehyde-containing product, wherein the catalyst comprises a main catalyst and a co-catalyst, the maincatalyst is a complex catalyst and comprises a rhodium complex and a phosphine ligand, the phosphine ligand is tris[2,4-di-tert-butylphenyl]phosphite, and the co-catalyst is a nickel-palladium bimetallic phosphinate. The method has the advantages of high normal-to-abnormal ratio in the product, good selectivity and yield, mild reaction conditions and the like.

The invention provides an antibacterial anti-mite polyester fiber and a preparation method thereof. The antibacterial anti-mite polyester fiber comprises the following raw materials in parts by weight: 75-90 parts of polyester chips and 10-25 parts of antibacterial anti-mite master batches, wherein the antibacterial anti-mite master batches comprise the following raw materials in parts by weight: 80-95 parts of polyester chips, 5-15 parts of nano far infrared powder, 0.5-2 parts of aluminic acid ester coupling agents, 0.5-2 parts of stearic acid, 0.05-1 part of tris-(2,4-di-tert-butyl-pheny)-phosphite and 0.05-1 part of pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate). The antibacterial anti-mite polyester fiber disclosed by the invention adopting a silver ion antibacterial anti-mite material has high-efficiency antibacterial and anti-mite effects. Moreover, due to the surface treatment, the antibacterial and anti-mite material has excellent effect of dispersing in a polyester matrix, so that the production operation is simple and convenient, and industrial production is promoted.