CAS: 84082-93-9; Zinc(Ii) 6-Methylheptanoate

专利信息

专利号:WO-2020253244-A1
优先权日:2019-06-20
标 题 :Process for catalytic synthesis of lactide
发明人：JIANG WEI; ZHANG YANKAI; SUN PING; LI AIMIN; ZHANG QUANXING
权利人:NANJING UNIVERSITY OF TECHNOLOGY; NANJING QUANKAI RES INSTITUTE OF BIOMATERIALS CO LTD
摘要:The present invention provides a process for the catalytic synthesis of lactide, comprising: mixing a lactic acid oligomer with a composite catalyst; and synthesizing lactide under a heating condition, and collecting the product using a vacuum distillation mode. The used composite catalyst is composed of a zinc or tin compound and an alkali metal compound. Compared with the prior art, the advantages of the present invention are that: the used composite catalyst features a high production rate with a small use amount, a low reaction temperature (150-220°C), and a short reaction time (2-5 h), has a single pass yield that may reach 95% or more, reduces energy consumption compared with the prior art, and facilitates industrial implementations.

专利号:US-11926608-B2
优先权日:2021-03-04
标题:Synthesis method and device for rapidly producing lactide at high yield
发明人：JIANG WEI; QI YUNBIAO; SUN PING; HUANG WEI; LI AIMIN; ZHANG QUANXING
权利人:NANJING UNIVERSITY OF TECHNOLOGY; NANJING QUANKAI RES INSTITUTE OF BIOMATERIALS CO LTD
摘要:The invention discloses a synthesis method and device for rapidly producing lactide at high yield. The method comprises: adding a single component of lactic acid or two components of lactic acid and catalyst, passing the mixture through a mixer to enter an oligomer preparation system, increasing a residence time through bottom circulation, synthesizing oligomeric lactic acid, and passing a gas-phase component through a rectification system. With the adoption of the device, the lactide is capable of being efficiently synthesized, crude lactide with a yield of 94% to 98% is capable of being obtained.

专利号:US-9873789-B2
优先权日:2014-12-26
标题:Halogen-free epoxy resin composition, prepreg and laminate using same
发明人：ZENG XIANPING; HE LIEXIANG
权利人:SHENGYI TECHNOLOGY CO LTD
摘要:Provided in the present invention are a halogen-free epoxy resin composition, prepreg and laminate using the same, the halogen-free epoxy resin composition comprising: (A) a halogen-free epoxy resin; (B) a crosslinking agent; and (C) a phosphorous-containing phenolic resin, the phosphorous-containing phenolic resin being formed by a synthesis of phenol and formaldehyde with dicyclopentadiene phenol, and being substituted by 9,10-dihydro-9-oxa-10-phosphapheanthrene-10-oxide or a derivative thereof. The prepreg and laminate prepared from the halogen-free epoxy resin composition have a high heat resistance, a low dielectric constant, a low dielectric loss factor and a low water absorption rate, and achieve halogen-free flame retardance.

专利号:CN-118649671-A
优先权日:2024-05-06
标 题:Preparation method of composite metal oxide catalyst and application of composite metal oxide catalyst in synthesis of antioxidant 245

专利号:CN-105420808-B
优先权日:2015-11-06
标题 :Synthesis Method of In and Ga Co-doped ZnO Nanocrystals

专利号:CN-117326985-A
优先权日:2022-09-30
标 题:Industrialized synthesis process of isophorone dicarbamic acid n-butyl ester