CAS: 2754-41-8; 1,2,4,5-Cyclohexanetetracarboxylic Dianhydride

相似化合物

6053-68-5 14166-28-0 2754-41-8

上下游产品

CAS号15383-49-0 1,2,4,5-环己烷四甲酸

均苯四甲酸置于硫酸,氢气,溶剂黄146体系中,用 5,5-Dimethyl-1,3-Cyclohexadiene,乙醇,氯仿 用作溶剂,60.0~250.0 °C,4.0 Mpa 条件下,反应 15.0H,反应生成1,2,4,5-环己烷四甲酸二酐
参考文献:1,2,4,5-环己烷四甲酸二酐的合成方法
标题:1,2,4,5-环己烷四甲酸二酐的合成方法
摘要:本发明提供了一种1,2,4,5‑环己烷四甲酸二酐的制备方法.该方法包括以下步骤:均苯四甲酸与酯化试剂反应制备均苯四甲酸酯;均苯四甲酸酯在固定床反应器中加氢合成氢化均苯四甲酸酯;所得氢化均苯四甲酸酯在强酸和有机溶剂中高效的合成1,2,4,5‑环己烷四甲酸二酐.与传统生产工艺相比,本发明酯化反应的效率高,延长了催化剂的使用寿命,实现加氢反应的连续化生产,缩短了工艺路线.该方法具有操作简单,生产效率高,成本低等优点.所得1,2,4,5‑环己烷四甲酸二酐中的金属离子(钠,钾,铁,钙,铝,锌)含量<=1Ppm,满足电子级产品的要求.

专利信息

专利号:CN-117680196-A
优先权日:2022-09-05
标 题 :Catalyst for the synthesis of cyclohexanetetracarboxylic acid and its preparation method, and synthesis method of cyclohexanetetracarboxylic acid

专利号:US-11136286-B2
优先权日:2017-01-27
标题:Diamine compound, and polyimide compound and molded product using the same
发明人：GOSHIMA TOSHIYUKI; SOE WIN MAW
权利人:WINGO TECH CO LTD
摘要:[Problems to be solved] The present invention provides a novel diamine compound which allows for the synthesis of a polyimide compound having a high solubility in an organic solvent and a high melt moldability.[Solution] The diamine compound according to the present invention is characterized by being represented by the following general formula (1):(whereinR1 to R8 are each independently selected from the group consisting of a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group, and a substituted or unsubstituted aromatic group; and at least one of R1 to R8 is a substituted or unsubstituted aromatic group).

专利号:US-2010121022-A1
优先权日:2006-10-17
标 题 :1,3-dipolar cycloaddition of azides to alkynes
发明人：MUSA OSAMA M; SRIDHAR LAXMISHA M; YUAN-HUFFMAN QINGWEN WENDY
权利人:MUSA OSAMA M; SRIDHAR LAXMISHA M; YUAN-HUFFMAN QINGWEN WENDY
摘要:A process for the bulk polymerization, in the absence of any solvent, of a reactant containing azide functionality and a reactant containing a terminal alkyne functionality, in the presence of Cu (I) catalyst or in the presence of a Cu(II) catalyst without a reducing agent, is described. Polymerization can be achieved at temperatures less than 100° C., which is suitable for low temperature cures. A controlled synthesis for low molecular weight oligomers is disclosed.

专利号:CN-114177946-B
优先权日:2020-09-14
标题 :Catalysts for the synthesis of hydrogenated pyromellitic acid

专利号:US-2024182747-A1
优先权日:2021-03-01
标 题:Synthesis and 3d printing of triblock copolymer through alternating ring-opening copolymerization of epoxides with saturated and unsaturated cyclic anhydride
发明人：BECKER MATTHEW; SHIN YONGJUN
权利人:UNIV DUKE
摘要:In various embodiments, the present invention relates to a series 3D printable, biodegradable, poly(propylene fumarate) derivative ABA type triblock copolymers having a flexible propylene succinate core unit synthesized through ring-opening copolymerization using a Mg(BHT)2(THF)2 catalyst followed by isomerization. 3D printing utilizing thiol-ene chemistry yield precise structure with improved build time. 3D printed products are fully degraded in hydrolytic conditions and the mechanical properties and degradation rate can be tailored by the polymer composition and resin formulation.

专利号:US-11969711-B2
优先权日:2018-12-31
标 题:Carbon-based, precious metal-transition metal composite catalyst and preparation method therefor
发明人：KIM JEONG KWON; YOOK SUN WOO; JEON BONG SIK; MYEONG WAN JAE
权利人:HANWHA SOLUTIONS CORP
摘要:The present invention relates to a carbon-based precious metal-transition metal composite catalyst and a preparation method therefor, and more particularly, to a catalyst synthesis method in which, when preparing a high-content precious metal-transition metal composite catalyst, a catalyst having uniform particles and composition can be prepared, and cyclohexane dimethanol (CHDM) is efficiently produced by the hydrogenation reaction of cyclohexane dicarboxylic acid (CHDA) in an aqueous solution. Provided is a method for preparing a carbon-based precious metal-transition metal composite catalyst, wherein, in the carbon-based precious metal-transition metal composite catalyst, the precious metal is included in an amount of 10-20 parts by weight, and the transition metal is included in an amount of 10-20 parts by weight based on 100 parts by weight of the composite catalyst, and thus a total amount of the precious metal-transition metal is 20-40 parts by weight based on 100 parts by weight of the composite catalyst.