30 results about "1-Dodecene" patented technology

This invention relates to the use of olefin mixtures containing 1-hexene / 1-decene / 1-dodecene and, additionally, 1-octene or 1-decene to produce high viscosity polyalphaolefins (PAOs) having a viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445) and a number average molecular weight of between about 1200 to about 4000, particularly useful as lubricant base stocks.

Disclosed herein is a method of making a PAO using tetradecene and particularly mixtures comprising 1-hexene, 1-decene, 1-dodecene, and 1-tetradecene, characterized by a low viscosity and excellent cold temperature properties, using a promoter system comprising an alcohol and an ester. In embodiments, the product has properties similar to those obtainable using a feed of solely 1-decene.

The invention relates to a method of making a PAO from mixtures comprising 1-decene and 1-dodecene, characterized by a low viscosity and excellent cold temperature properties, using a promoter system comprising an alcohol. In embodiments, the product has properties similar to those obtainable using a feed of solely 1-decene.

A process for the co-oligomerization of 1-dodecene and 1-decene to produce a polyalphaolefin having a kinetic viscosity of 4 to 6 cSt at 100° C., a Noack weight loss of 4 to 9%, a viscosity index of 130 to 145, and a pour point of -60° C. to -50° C.

Disclosed is a method for preparing a high-viscosity polyalphaolefin, chiefly useful as an industrial oil, with high yield under conditions of the room temperature and atmospheric pressure, the method including: prepolymerizing 1-decene or 1-dodecene using a catalyst composed of ethyl aluminum dichloride (EADC) and t-butyl chloride (TBC) to obtain a prepolymer, and bringing 1-octene into contact with the prepolymer used as a catalyst under conditions of the room temperature and atmospheric pressure. Using the method makes it possible to prepare a high-viscosity polyalphaolefin from 1-octene less expensive than 1-decene or 1-dodecene, the polyalphaolefin having a kinetic viscosity of at least 90 cSt at 40 DEG C and a viscosity index of at least 135 to overcome the problem with a low-viscosity polyalphaolefin from 1-decene or 1-dodecene.

Provided are an α-olefin copolymer useful as a high-viscosity lubricant oil excellent in viscosity characteristics, low-temperature characteristics and oxidation stability, and a lubricant oil containing the copolymer. The α-olefin copolymer is a 1-octene / 1-decene / 1-dodecene ternary copolymer produced by the use of a doubly crosslinked metallocene catalyst.

Provided are an α-olefin copolymer useful as a high-viscosity lubricant oil excellent in viscosity characteristics, low-temperature characteristics and oxidation stability, and a lubricant oil containing the copolymer. The α-olefin copolymer is a 1-decene / 1-dodecene copolymer produced by the use of a doubly bridged metallocene catalyst.

The invention discloses a special-purpose repellant for tobacco insect and an application method thereof. The repellant is prepared by uniformly mixing 1.0-1.5% of effective ingredient, 20-30% of ethanol and 68.5-79% of 1-dodecene C12H24. The effective ingredient comprises 35-40% of nimbin and 60-65% of natural pyrethrin. The method comprises the following steps: adding the repellant in a heater, continuously heating under 114-121 DEG C, and then repelling cigarette beetle, ephestia elutella, mosquito, fly, cockroach, bug and spider in a workshop in short time. The special-purpose repellant has the advantages of high insecticidal activity, wide effect scope, less usage amount and no harm on human body. Due to fast repelling speed and short decomposition time, repellant resistance is difficult for insects. The repellant is decomposed to H2O and CO2 in air finally, and can not left in production environment. In the invention, ethanol and carbon 12 can be taken as a synergist, and the repellant has good thermostability.

Provided are an α-olefin (co)polymer useful as high-viscosity lubricant oil excellent in viscosity characteristics and low-temperature characteristics, and a lubricant oil containing the (co)polymer. The α-olefin (co)polymer is produced by the use of a metallocene catalyst and satisfies the following (a′) and (b′). (a′) The 2,1-insertion ratio at the polymer terminal, as measured through 1H-NMR, is at least 30 mol % of the entire molecule, and (b′) the mesotriad fraction (mm), as measured through 13C-NMR, is at most 50 mol %. Preferably, a 1-octene / 1-dodecene copolymer is provided, as produced by the use of a metallocene catalyst and satisfying the following (a) to (c). (a) The molar ratio of the 1-octene unit to the 1-dodecene unit is from 20 / 80 to 80 / 20, (b) the mesotriad fraction (mm), as measured through 13C-NMR, is at most 50 mol %, and (c) the kinematic viscosity at 100° C. is from 30 to 1000 mm2 / sec.

The invention discloses a method for determining the migration quantity of volatile organic compounds in an adhesive sticker for a food label in a water-based food simulating object. The method comprises the following steps: performing a direct or indirect migration test on the adhesive sticker for the food label through a water-based food simulating solution; sampling the water-based food simulating solution through purging and trapping; separating 10 volatile organic compounds through HP-5ms or chromatographic columns with similar properties; performing detection through a mass spectrometry detector; performing quantification through an external standard method, wherein the 10 volatile organic compounds include nonene, 2-ethylhexanol, 1,2,4,5-tetramethylbenzene, camphor, 1-dodecene, naphthalene, 2-ethylhexyl acrylate, 1-methylnaphthalene, 1-undecanol and dodecyl aldehyde. The method is accurate in test, easy to operate, high in efficiency, quick, high in sensitivity and high in practicality, is applicable to qualitative and quantitative determination on the volatile organic compounds in the adhesive sticker for the food label through a manufacturing enterprise of the adhesive sticker for the food label and relevant government supervision departments, and can be used for avoiding harm to the physical health of a consumer caused by over-large migration quantity of the volatile organic compounds.

A vehicle transmission incorporating a wet clutch, said clutch being lubricated by a transmission fluid containing a major amount of a lubricating oil and a minor amount of an additive composition including:(i) a compound of structure (I):wherein a is an integer from 1 to 10 and R is a hydrocarbon group made by the metallocene-catalysed polymerisation of an alphaolefin feedstock, said feedstock being 1-octene, 1-decene, 1-dodecene or any mixture thereof;(ii) a friction modifier; and(iii) an oil-soluble phosphorus compound.

This invention relates to the use of 1-decene / 1-dodecene olefin mixture to produce high viscosity polyalphaolefins (PAOs) having a viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445) and a number average molecular weight of between about 1200 to about 4000, particularly useful as lubricant base stocks.

The invention discloses a silica-nitrilotriacetic acid-platinum catalyst and a preparation method and use thereof. The preparation method mainly comprises modifying SiO2-NH2 with NTA to obtain SiO2-NTA, and immobilizing platinum. The immobilization catalyst is successfully used for a hydrosilylation reaction of chain olefins (such as 1-heptene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene and 1-octadecene) and methyl dichlorosilane, and a hydrosilylation reaction of cyclic olefin (such as norbornene), styrene, 2-hexene and methyl dichlorosilane.

The invention belongs to the technical field of chemical engineering, and relates to a method for continuously preparing dodecyl benzene. The method comprises the following steps that 1, trimethylamine hydrochloride and aluminum chloride are stirred and mixed according to a ratio to prepare an ionic liquid catalyst A; 2, benzene and 1-dodecene are introduced into a micro-mixer a to be quickly and evenly mixed in proportion to obtain a raw material liquid B; 3, a catalyst A and the raw material liquid B are continuously introduced into a micro-mixer b to be rapidly and uniformly mixed to obtain a reaction liquid C, and the reaction liquid C enters a tubular micro-reactor for reaction; 4, the product mixture stands still and is layered, and an ionic liquid A is recycled; 5, an upper layer organic phase obtained in step 4 is rectified to obtain the product dodecyl benzene. The method is environmentally friendly, and can effectively solve the problems of high corrosion, high pollution and the like in a traditional technology. Material flows are rapidly and uniformly mixed, the reaction efficiency is high, the yield of monoalkyl benzene is nearly 100% in a very short time, and the yield of two-position isomer can reach 44% or above; the reaction is conducted in the tubular micro-reactor, the reaction time can be accurately controlled, and the product quality is stable.

The invention relates to a manufacturing method of a functionalized polyolefin material. The functionalized polyolefin material is composed of an olefin comonomer and a flexible diene comonomer, wherein the alpha-olefin comonomer is composed of ethylene, propylene and 1-dodecene; and the flexible diene comonomer is composed of 7-methyl-1,6-octadiene, 1,4-hexadiene and 4-vinyl-1-cyclohexene. The technical scheme can enhance the strength of the functionalized polyolefin material on the premise of ensuring the elasticity.

The invention discloses an oil field industry defoaming agent comprising poly dimethyl siloxane, methoxy poly ether, 1-dodecene, hexamethyl disiloxane, octamethylcyclosiloxane and a catalyst. The preparation method is as follows: polyether and long chain alkyl co-modified silicone oil is prepared by solvent-free hydrosilation of poly dimethyl siloxane, methoxy poly ether and 1-dodecene under the catalysis effects of chloroplatinic acid, the catalyst and an allyl polyether and long chain olefin mixture are added dropwise for reaction, and unreacted excess polyether and olefin mixture is removed under reduced pressure to obtain the product. The oil field industry defoaming agent enhances the antifoaming and defoaming performance, reduces the defoaming agent system surface tension so as to improve the defoaming agent overall performance, and at the same time improves the defoaming agent corrosion resistance, solvent resistance and oil resistance.

The invention relates to a functionalized polyolefin material which is composed of an olefin comonomer and a flexible diene comonomer, wherein the alpha-olefin comonomer is composed of ethylene, propylene and 1-dodecene; and the flexible diene comonomer is composed of 7-methyl-1,6-octadiene, 1,4-hexadiene and 4-vinyl-1-cyclohexene. The technical scheme can enhance the strength of the functionalized polyolefin material on the premise of ensuring the elasticity.

The invention discloses a catalyst for selective hydrogenation of 3,7,11-trimethyl-1-dodecyne-3-alcohol to synthesize an important intermediate namely 3,7,11-trimethyl-1-dodecene-3-alcohol of vitamin E. The existing catalysts of the type have low selectivity or low product quality. The catalyst of the invention uses calcium carbonate as a carrier, Pd as an active ingredient and Pb and X as poisoning agents, wherein X refers to metal Mn or / and Zn. During the preparation of the catalyst, a Pd compound is adsorbed to the carrier to perform filtration first, and then perform reduction. The catalyst of the invention has high activity and high selectivity, the quality of a product is improved, and a selected preparation method can greatly reduce the content of the noble metal Pd in the catalyst.

Disclosed are a process and an apparatus for using an olefin as an azeotropic entrainer to isolate a target organic compound from a waste stream. The olefin may be, for example, 1-decene, 1-dodecene, or 1-tetradecene. The target organic compound may be 1,3-dichloro-2-propanol in waste stream comprising a 2,2′-oxybis(1-chloropropane).

The invention relates to a preparation method of polyalphaolefin lubricating oil with anti-oxidation performance. The method combines β-3,5-di-tert-butyl-4-hydroxyphenylpropionic acid with hexanediol or trimethylolpropane Or part of the hydroxyl groups in pentaerythritol or dipentaerythritol are esterified to obtain hydroxyl compounds containing antioxidant groups; the hydroxyl compounds are fully esterified with acrylic acid to obtain reactive antioxidants with terminal double bonds; During the polymerization process of olefins such as octene, decene, and 1-dodecene, this reactive antioxidant with terminal double bonds is added, and a polyalphaolefin lubricating oil base with antioxidant properties can be obtained after the polymerization reaction Oil. The polyalphaolefin lubricating oil prepared by the invention has good anti-oxidation performance, contains a large amount of anti-oxidation groups in the structure, and can adjust the content of the anti-oxidation groups according to different use requirements. There is no need to add phenolic antioxidants during use.