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2603 results about "Hydroquinone Compound" patented technology

Hydroquinone, also benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C6H4(OH)2. It has two hydroxyl groups bonded to a benzene ring in a para position.

Gel plugging agent for deep profile control of higher temperature oil reservoir and preparation method of gel plugging agent

The invention relates to a gel plugging agent for deep profile control of a higher temperature oil reservoir, and a preparation method of the gel plugging agent. The gel plugging agent comprises 0.3-0.8 percent of nonionic polyacrylamide, 0.6-1.3 percent of a cross-linking agent A, 0.45-1.44 percent of a cross-linking agent B, 0.02-0.04 percent of a temperature stabilizer and 0.01-0.08 percent of a pH value regulator, wherein the cross-linking agent A is methenamine; the cross-ling agent B is hydroquinone or resorcinol; the temperature stabilizer is sodium thiosulfate, sodium bisulfite or sodium sulfite; and the pH regulator is sodium hydroxide, potassium hydroxide, sodium carbonate or sodium bicarbonate. The gel plugging agent disclosed by the invention has strong temperature resisting performance and can be used for the profile control operation of the high temperature oil reservoir with 100-160DEG C; the gel plugging agent has the characteristics of high strength after being gelatinized, stronger plugging capability for the stratum and favorable thermal stability; and in addition, after the gel plugging agent is stood at the temperature of 130 DEG C for 90 days, the strength change is little and gel breaking and hydration are avoided.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Phosphoric-acid-base modified polycarboxylic-acid water reducer with high adaptability and preparation method thereof

The invention discloses a phosphoric-acid-base modified polycarboxylic-acid water reducer with high adaptability and a preparation method thereof. The water reducer is prepared from the following raw materials: isopentenol polyoxyethylene ether, hydrogen peroxide, acrylic acid, an unsaturated phosphoric acid monomer, deionized water, a reducing agent, and a chain transferring agent. The chain transferring agent is one of mercaptoethanol, mercaptoacetic acid and mercaptopropionic acid. The unsaturated phosphoric acid monomer is prepared from 2-phosphono-1,2,4-butanetricarboxylic acid, p-toluenesulfonic acid and hydroquinone. The preparation method for the water reducer comprises adding isopentenol polyoxyethylene ether and deionized water into a reaction vessel, uniformly stirring, heating, keeping warm, adding oxygen peroxide, then dropwise adding a material solution by employing a constant-flow pump, continuing to keep warm for reacting for 1-1.5 h after dropwise adding of the material solution is finished, naturally cooling to room temperature, and adjusting the pH value of the obtained product to 5-6 by using an alkaline solution. The phosphoric-acid-base modified polycarboxylic-acid water reducer possesses good sulfate ion resisting capability and sludge resisting capability, thereby satisfying engineering demand.
Owner:SHIJIAZHUANG CHANGAN YUCAI BUILDING MATERIALS

Silicon framework hyperbranched epoxy resin and preparation method thereof

The invention discloses a silicon framework hyperbranched epoxy resin and a preparation method thereof. Firstly, compound A containing two moles of silicon-hydrogen bond, compound B containing three moles of double bond and self-made halloysite supported platinum catalyst are uniformly mixed, and are stirred under the temperature of 30DEG C to 100DEG C to react for 5 to 10 hours, so that the double bond can fully reacts, and thereby hyperbranched organic silicon resin, the end group of which is the silicon-hydrogen bond, is obtained; then, compound C containing a epoxy group is added in the hyperbranched organic silicon resin, and is stirred under the temperature of 60DEG C to 120DEG C to react for 10 to 15 hours until the silicon-hydrogen bond fully reacts, hydroquinone as polymerization inhibitor is then added, and after vacuumization, the silicon framework hyperbranched epoxy resin is obtained. The method has the advantages of simple technique and easily obtained materials, and does need organic solvent and processes such as washing, thus avoiding environment pollution caused by conventional organic solvent and washing for preparing organic silicon resin, and the obtained product is expected to be applied to fields such as the strengthening and toughening of epoxy resin and solventless, low-volatility epoxy resin coating.
Owner:SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES

Maigre ham sausage and preparation method thereof

The invention discloses a maigre ham sausage and a preparation method thereof. The maigre ham sausage consists of the following raw materials: textured soybean proteins, ice water, vegetable oil, Konjac powder, albumen powder, modified starch, table salt, white granulated sugar, monosodium glutamate, I+G, maigre meat essence, whey proteins, powdered soy, caramel pigment and TBHQ (Tert-Butyl Hydroquinone). The preparation method comprises the following steps: rehydrating; dehydrating; threading; mixing; filling; cooking and sterilizing; and detecting and putting in a warehouse. The maigre ham sausage disclosed by the invention has the characteristics that by taking textured soybean proteins, Konjac powder, albumen powder and vegetable oil as main raw materials to replace animal meat, besides animal nutritional components, the maigre ham sausage further reduces the fat content of animal, so that the maigre ham sausage is more beneficial to human health; konjac has a certain health-care function, and no nitrite is added; the maigre ham sausage has the characteristics of fine and smooth meat, fresh and tender taste, convenience in carrying, simplicity in eating and long fresh and tender, and is deeply welcomed by massive consumers; the preparation process is simple in flow, the raw materials are cheaper, and the maigre ham sausage is easy to be produced on a large scale.
Owner:蔡云云
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