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112 results about "Diisobutyl phthalate" patented technology

Diisobutyl phthalate (DIBP) is prepared by esterification process of isobutanol and phthalic anhydride. Its structural formula is C₆H₄(COOCH₂CH(CH₃)₂)₂. DIBP is an odorless plasticizer and has excellent heat and light stability. It is the lowest cost plasticizer for cellulose nitrate. DIBP has lower density and freezing point than the related compound dibutyl phthalate (DBP). Othewise, it has similar properties DBP and can often be used as a substitute for it. Its refractive index is 1.488–1.492 (at 20 °C, D).

Method for improving thermal stability of dibutyl/diisobutyl phthalate

The invention provides a method for r improving thermal stability of dibutyl/diisobutyl phthalate, and belongs to the technical fields of fine organic synthesis and application and machine shaping of macromolecular new materials. The method which improves the intrinsic thermal stability of plasticizers of dibutyl phthalate and diisobutyl phthalate by an inorganic carbonate heat treatment is characterized in that: protonic acid, such as sulfuric acid, is adopted to serve as an esterifying catalyst, coarse ester is thermally decomposed by anhydrous solid carbonates in a reaction system prepared through esterifying synthesis of benzoic anhydrides and n-butyl alcohol or isobutyl alcohol, the catalyst and byproducts generated in the reaction process are effectively removed, coloring byproducts in the esterifying reaction system can be effectively removed, the effect of improving the product stability is achieved, and the requirement on thermal treatment of polyvinyl chloride (PVC) products is met; compared with the conventional production methods, the method has the advantages that: process wastewater is reduced by two-thirds, the production period is shortened, and the aims of energy conservation and emission reduction are fulfilled.
Owner:JIANGNAN UNIV +1

Anti-aging non-woven fabric and preparation method thereof

The invention relates to anti-aging non-woven fabric, which consists of a top surface layer, a back surface layer and a fiber cotton layer, wherein the fiber cotton layer is clamped and arranged between the top surface layer and the back surface layer, the top surface layer and the back surface layer are made of non-woven fabric materials, and the non-woven fabric is prepared from the following ingredients in parts by weight by a melt blowing method: 100 parts of homopolymerization isotactic polypropylene, 2 to 3 parts of glass fiber, 1 to 2 parts of PP-g-MAH compatilizers, 1 to 2 parts of hydroxyethyl cellulose, 3 to 4 parts of rutile titanium dioxide, 12 to 15 parts of diisobutyl phthalate, 2 to 3 parts of 2,2-di(2-thienyl)glycolic acid methyl ester, 1 to 2 parts of anti-aging agents RD, 2 to 3 parts of calcium citrate, 12 to 15 parts of oyster shells, 1 to 2 parts of perilla leaves, 2 to 3 parts of plum blossoms, 1 to 2 parts of borneol, 1 to 2 parts of luffa stems and 4 to 5 parts of auxiliary agents. The anti-aging non-woven fabric has the advantages that the rutile titanium dioxide is used so that the characteristics of ultraviolet ray resistance, widespread aging resistance, bright color and pollution difficulty are realized; harmful gas and peculiar smell can be adsorbed, and higher pulling-up intensity, higher bending elastic modulus and higher impact intensity are realized.
Owner:芜湖跃飞新型吸音材料股份有限公司

Capsaicin-containing non-woven fabric material for sound-absorbing cotton

The invention relates to a non-woven fabric material, and specifically relates to a capsaicin-containing non-woven fabric material for sound-absorbing cotton. The non-woven fabric material is prepared from the following raw materials in parts by weight: 100 parts of isotatic polypropylene, 1-2 parts of anti-oxidant 1010, 2-3 parts of toluene diisocyanate, 1-2 parts of fatty alcohol polyoxyethylene ether, 2-3 parts of nanometer calcium carbonate, 1-2 parts of capsaicin, 6-9 parts of double fourteen-carbon alcohol ester, 12-15 parts of diisobutyl phthalate, 1-2 parts of eggshell powder, 1-2 parts of aluminum sulfate, 2-3 parts of cortex mori, 1-2 parts of peucedanum praeruptorum, 1-2 parts of tussilago farfara and 4-5 parts of an auxiliary agent. The non-woven fabric material has the toughening and reinforcing effects and the sound-absorbing and noise-reducing effects because of contained raw materials such as nanometer calcium carbonate, eggshell powder, Chinese herbal medicine vegetable fibre and the like; additionally, the non-woven fabric material is prolonged in service life because of the insect-preventing bacterium-preventing efficacy possessed by capsaicin; and sound-absorbing cotton can be prepared by performing multilayer stacking on the non-woven fabric material, the technology is simple and the application potential is huge.
Owner:芜湖跃飞新型吸音材料股份有限公司

Method for preparing spherical catalyst for propylene polymerization

The invention relates to a method for preparing a spherical catalyst for propylene polymerization. The adopted technical scheme comprises the following steps of: adding white oil and silicone oil to a reaction kettle, throwing magnesium chloride and alcohol, the mole ratio of which is 1:2.8-3.0, into the reaction kettle and melting; transferring to a reaction kettle cooled to -30 DEG C after melting, to which hexane is added in advance, wherein the final temperature does not exceed 0 DEG C; performing pumping filtration and washing to obtain a spherical carrier; adding the spherical carrier to a stirred kettle holding the hexane, cooling to -10--20 DEG C, and then slowly dropping to a reaction kettle cooled to -10- -15 DEG C wherein the reaction kettle holds titanium tetrachloride for loading titanium; controlling the kettle pressure and heating to 40 DEG C; adding diisobutyl phthalate and heating to 100-105 DEG C; and controlling the kettle pressure, keeping the constant temperature for 1.5 hours, suction filtering, then adding titanium tetrachloride for washing; heating to 120 DEG C, keeping the constant temperature for 1.5 hours, and then washing until the filtrate does not contain chloride ions. The method is simple, saves raw materials, reduces production cost and is friendly to environment; and the prepared catalyst has even particles.
Owner:LIAONING DINGJIDE PETROCHEM

Cold-resistant cable sheath material as well as preparation method and application thereof

The invention discloses a cold-resistant cable sheath material as well as a preparation method and application thereof. The cold-resistant cable sheath material consists of the following raw materials in parts by weight: 72-80 parts of ethylene propylene diene monomer, 8-15 parts of sisal, 13-18 parts of fish scale powder, 20-26 parts of dimer fatty acid, and 35-46 parts of diisobutyl phthalate. The preparation method comprises the following steps: drying and crushing the sisal, adding anhydrous ethanol, and carrying out sealed treatment and microwave drying to obtain treated sisal; drying and crushing fish scales, adding anhydrous ethanol, and carrying out ultrasonic treatment and drying to obtain treated fish scale powder; and mixing ethylene propylene diene monomer with dimer fatty acid, carrying out ultrasonic vibration treatment, adding diisobutyl phthalate, and carrying out heat treatment on the treated sisal and the treated fish scale powder to obtain the cold-resistant cable sheath material. The cold-resistant cable sheath material disclosed by the invention has the advantages of excellent low-temperature resistance, flame-retardant performance and torsion resistance, has simple raw materials and a simple preparation process, and is suitable for cables in cold areas.
Owner:YUYAO YUNHUAN ORIENT ELECTRONICS CO LTD
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