39 results about "Isononyl alcohol" patented technology

The invention relates to a method for preparing a PVC plasticizer by taking by-products of production of fumaric acid and recovery alcohol as raw materials. The method comprises the following steps of: 1, adding 1 part of acid water residues, 2 to 4 parts of recovery isooctanol or recovery isononyl alcohol and 200 to 400ppm of esterification catalyst into a reactor with a thermometer, a distillation and condensing device and a stirring device, and heating the mixture with stirring to the temperature of between 120 and 160 DEG C for yielding water; 2, continuing heating to the highest reactiontemperature of 220 DEG C, controlling the temperature of cut fraction to be between 80 and 102 DEG C all the time in the process of a reaction, and reacting until an acid value is less than 1.0 mgKOH / g; and 3, reducing the temperature until the temperature is 190 DEG C or 215 DEG C, performing dealcoholization under the reduced pressure of between -600 and -740 mmHg for 1 to 2 hours, stopping thereaction, and cooling and filtering to obtain a finished product. The method can utilize scrap materials of enterprises effectively, reduce the production cost of the plasticizer and the treatment cost of waste liquor and reduce environmental pollution.

The invention relates to a method for preparing higher alcohol phthalate through continuous transesterification reaction. In a fixed-bed reactor, dimethyl phthalate, diethyl phthalate, diphthalate Low-carbon alcohols such as butyl phthalate and high-carbon alcohols such as isononanol, isodecyl alcohol, and 2-propylheptanol are used as raw materials, and magnesium calcium aluminate, sodium aluminosilicate, potassium aluminosilicate, silicon One or more of magnesium aluminate, calcium aluminosilicate, aluminum magnesium titanate, magnesium calcium titanate, and aluminum magnesium zirconate are catalysts, and the molar ratio of higher alcohol to lower alcohol phthalate is 2.1-4.0 , reaction temperature 160~220℃, volume space velocity 0.5~2h ‑1 , The conversion rate of low-carbon alcohol phthalate and the selectivity of high-carbon alcohol phthalate are above 99%. The invention has the following advantages: good stability of raw material storage and transportation, convenient feeding; less side reactions, low raw material consumption; no corrosion of the catalyst and continuous use; clean and energy-saving process, no waste water generation and discharge; reaction in a fixed bed reactor Continuous, high efficiency.

The invention relates to the preparation of an additive used for the production of plastics, in particular to a preparation method of a cycloalkane anhydride plasticizer. The method comprises a first step of conducting mono-esterification reaction of 2-4 portions of isononyl alcohol and 1 portion of hexahydrophthalic anhydride; a second step of adding a catalyst when the temperature is increased to 160-180 DEG C; a third step of continuing to increase the temperature to 225 DEG C and then conducting bi-esterification reaction; a fourth step of decreasing the temperature to 210-215 DEG C and then conducting decompression and dealcoholization for 1-2 hours until the alcohol-containing mass percent is less than 0.05 percent; a fifth step of decreasing the temperature to 85-98 DEG C and adding pure water with 2-5 mass percent of reactants in a reactor to kill titanium isopropylate, and then increasing the temperature to 100-110 DEG C for decompression and dehydration after full reaction; and a sixth step of adding activated carbon and diatomaceous earth for bleaching and filtration so as to obtain a finished product. The product obtained does not contain a benzene ring structure, is environment friendly and non-toxic to human body, has high-impedance, and can be added and applied to various PVC plastic products.

The present invention relates to a kind of method that titanium chelate catalyzes transesterification to prepare higher carbon alcohol ester of phthalate, with dimethyl phthalate, diethyl phthalate and dibutyl phthalate Low-carbon alcohol phthalate and high-carbon alcohols such as isononanol, isodecyl alcohol, and 2-propylheptanol are used as raw materials, with o-phenanthroline, 2,2'-bipyridine, ethylenediamine, N,N ‑Dimethylethylenediamine, N,N′‑dimethylethylenediamine, N,N,N′,N′‑tetramethylethylenediamine, 1,2‑cyclohexanediamine, etc. The titanium chelate of the ligand is the catalyst, the amount of the catalyst is 0.01-0.1% of the mass of the lower alcohol phthalate, the molar ratio of the higher alcohol to the lower alcohol phthalate is 2-4, and the reaction temperature is 160- 220°C, the reaction time is 2 to 5 hours, the conversion rate of lower alcohol phthalate and the selectivity of higher alcohol phthalate are up to 99%. The invention has the advantages of good raw material storage and transportation stability, convenient feeding, less side reactions, low raw material consumption, no corrosion of the catalyst, and less consumption.