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专利信息

专利号:US-6391978-B1
优先权日:2000-12-14
标题 :Process for the synthesis of hydroxyl-end group functionalized polybutadienes
发明人：PETERS MARK A
权利人:BAYER AG
摘要:This invention relates to a process for the synthesis and purification of hydroxyl-end group functionalized, linear, non-crosslinked polyolefins without pendant chain branched groups, and specifically to hydroxyl-end group functionalized polybutadienes. The process comprises polymerizing a cyclic olefin monomer with a chain transfer agent in the presence of a suitable catalyst, thereby forming a protected end-group functionalized polyolefin, followed by adding a mixture comprising water and caustic to the protected end-group functionalized polyolefin to remove the protecting groups, thus forming a hydroxyl end-group functionalized, linear, non-crosslinked polyolefin without pendant chain branched groups.

专利号:US-7498434-B2
优先权日:2004-01-14
标题:Two-phase method for the synthesis of selected pyrazolopyrimidines
发明人：CANTRELL GARY LEE; MOSER FRANK WILLIAM; HALVACHS ROBERT EDWARD
权利人:MALLINCKRODT INC
摘要:An improved method of making a substituted pyrazolopyrimidine. The method comprises reacting a aminopyrazole compound or a salt thereof with a substituted 1-oxo-2-propenyl-arene(-heterocycle) or a salt thereof under acidic conditions in a reaction medium including a two-phase mixture of an aqueous solution and a water-immiscible organic liquid. Specific substituted pyrazolopyrimidines include N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide and N-methyl-N-(3-{3-[2-thienyl-carbonyl]-pyrazolo[1,5-a]-pyrimidin-7-yl}phenyl)acetamide.

专利号:WO-2023197278-A1
优先权日:2022-04-15
标题 :Solvent-free synthesis method for sucrose ester having high monoester content
发明人：XU SHENG; LIANG ZHENMING; Min Juping; SHAO LEI; XU HUAIYI
权利人:GUANGZHOU CARDLO BIOCHEMICAL TECH CO LTD
摘要:Disclosed is a solvent-free synthesis method for a sucrose ester having high monoester content. The method comprises the following steps: (1) mixing sucrose, a higher fatty acid ester, and a higher fatty acid salt, and preheating at 70-90°C to obtain a mixture; and (2) mixing the mixture and a catalyst, and reacting at 120-140°C to obtain the sucrose ester. According to the synthesis method involved in the present application, a solvent-free ester transesterification method is used, the sucrose, the higher fatty acid ester, the higher fatty acid salt, and the catalyst turn into a co-molten state in a certain ratio at a high temperature, and the sucrose ester is catalytically synthesized under reaction conditions facilitating kinetics. According to the synthesis method, the use of a solvent is avoided, the problem of toxicity is solved, a product can meet medical and edible standards, sucrose monoester content in the product is high, and the color of the prepared product is good; the synthesis method has simple steps, facilitates industrial production, and has important application value.

专利号:US-11931614-B2
优先权日:2021-05-31
标题:Fire-extinguishing agent capable of extinguishing combustion of aluminum slag, and preparation method therefor and use thereof
发明人：YU HAIJUN; Zhong Yingsheng; XIE YINGHAO; LI CHANGDONG; ZHANG XUEMEI
权利人:GUANGDONG BRUNP RECYCLING TECHNOLOGY CO LTD; HUNAN BRUNP RECYCLING TECH CO LTD; HUNAN BRUNP VEHICLES RECYCLING CO LTD
摘要:A fire-extinguishing agent capable of extinguishing the combustion of aluminum slag, and a preparation method therefor and the use thereof. The fire-extinguishing agent comprises the following raw materials: a sulfate, a chlorine salt, a mineral, a silica gel, a surfactant and a stearate. The main materials of sulfate and chlorine salt are solid waste containing sulfate and chlorine salt obtained by separating high-salt wastewater generated during a resynthesis process of a positive electrode material of a waste lithium battery. The solid waste containing sulfate and chlorine salt is used as a material for a fire-extinguishing agent, which can effectively recycle waste resources. The wastewater of a large amount and high salt content produced in the synthesis process of the positive electrode material of the waste lithium battery is separated and evaporated to obtain more solid wastes containing sulfate and chlorine salt, which can be used as the main material for preparing fire-extinguishing agents on a large scale.

专利号:US-2022325053-A1
优先权日:2019-08-13
标题:Method for the synthesis of a two-dimensional or quasi-two-dimensional polymer film, the two-dimensional or quasi-two-dimensional polymer film and the use

专利号:AU-2004314335-A1
优先权日:2004-01-14
标题 :Two-phase method for the synthesis of selected pyrazolopyrimidines