33 results about "4-Heptanone" patented technology

An improved frothing agent adaptable to froth flotation process to enhance coal selectivity for separation and efficiency of the froth flotation process comprises:A blended mixture ofKetone (2,6-Dimethyl-4-Heptanone)85-89%(Wt %)Ester molecule(Tetrahydrofurfuryl acetate)10-12%(Wt %)Epoxide conditioner (1,2-Epoxydodecane)0.25-0.30%(Wt %)Water4.75-5.25%(Wt %)

The present invention discloses a heat treatment PAG water base quenching medium stabilizer, which comprises the following components, by weight, 1-10 parts of a foam breaking polysiloxane solution, 1-12 parts of 2,6-dimethyl-4-heptanone, 1-15 parts of alkenyl succinic acid-zinc naphthenate, 1-5 parts of barium sulfonate, and 1-8 parts of polyethylene glycol. The heat treatment PAG water base quenching medium stabilizer is mainly used for a water base quenching medium adopting polyaleneglycol (PAG) as a main component, wherein an addition amount is 0.1-2% of a weight of a PAG aqueous solution. The invention further discloses uses of the heat treatment PAG water base quenching medium stabilizer.

Methods, systems and catalysts for converting an alcohol containing feedstock to an upgraded material in a single catalyst bed wherein a feedstock is fed to a catalyst under preselected conditions to obtain an intermediate; and condensing the intermediate through an aldol condensation reaction to yield a product containing an upgraded material. In one instance the feedstock includes ethanol, the catalyst is a mixed metal oxide catalyst and the upgraded material is typically a C.sub.5+ ketone(s) or alcohol(s), such as 2-pentanone, 2-heptanone, 4-heptanone and 2-nonanone.

The invention discloses a catalyst for synthesis of 2,6-dimethyl-4-heptanone from acetone and a preparation method for the catalyst. The catalyst comprises an active ingredient Ni and a carrier ZrO12-MnO2; based on the total weight of the catalyst, the content of the active ingredient Ni is 1 to 10 weight percent, preferably 3 to 6 weight percent, the content of MnO2 is 1 to 20 weight percent, preferably 5 to 10 weight percent, and the balance is ZrO2. The catalyst disclosed by the invention is applied to a reaction for synthesis of the 2,6-dimethyl-4-heptanone from the acetone, and has the characteristics that conversion rate of the acetone serving as a raw material is high; the selectivity of the 2,6-dimethyl-4-heptanone serving as a product is high, that is the yield of the 2,6-dimethyl-4-heptanone serving as a target product is high.

The present invention relates to a preparation method of 7A-double-condensed pyrrolidin-acetonitrile, which uses gamma-butyrolactone raw material to prepare 7A-double-condensed pyrrole through affinity substitution reaction, acidolysis ring-closure reaction and affinity addition decarboxylation reaction Pyridine-acetonitrile, which is characterized in that the transition intermediate CMP-1 is separated and purified to replace 1,7-dichloro-4-heptanone to provide the carbon chain constructed by the mother nucleus. The purification is simple, the yield is high, and the intermediate is stable and easy to store and transfer . The inorganic ammonium salt ammonium acetate is used as the ammonia source to replace the large-scale ammonia gas used in the traditional process, and a high-purity (GC>99%) product is produced under relatively mild conditions. It avoids the shortcomings of the traditional process such as high energy consumption (low temperature freezing reaction), long time consumption, and low product quality (rectification is required, and the product purity is between 98‑99%). The raw materials of each step in the production process are cheap and easy to obtain, no toxic organic solvents are used, the post-treatment is simple, the "three wastes" are less in the production process, and it is green and environmentally friendly.

The invention relates to a high-fillibility high-rubbing property primer and a preparation method thereof. The method comprises the following steps: according to parts by weight, adding 20-40 parts of modified acrylic resin A, 10-20 parts of modified acrylic resin B, 2-4 parts of wetting dispersant, 10-15 parts of nano talcum powder, 5-10 parts of superfine barium sulfate, 0.2-0.5 parts of carbon black, 0.5-1 part of anti-settling agent, 5-15 parts of xylene, 5-10 parts of n-butyl acetate and 5-10 parts of dimethyl-4-heptanone respectively in a vat in sequence, and stirring for 30min at 600-800r / min, then putting into a grinder to grind to a fineness below 10 micrometers and discharging, and finally adding 0.2-0.5 parts of fluorocarbon-modified polyacrylic acid flatting agent and stirring for 30min at 600-800r / min. Compared with the prior art, the primer has the advantages of excellent adhesive force on various PP+GF (propene polymer and glass fiber), great easiness in polishing, excellent recoatability, suitability for various finishing coats and the like.