公开(公告)号：US20220390398A1

公开(公告)日：2022-12-08

申请号：US17773042

申请日：2019-12-05

申请人： SHEYANG RESEARCH INSTITUTE OF NANJING UNIVERSITY ,  NANJING UNIVERSITY

发明人： Dongshan ZHOU ,  Evgeny ZHURAVLEV ,  Jing JIANG ,  Qi XUE ,  Shaochuan LUO ,  Xiaoliang WANG ,  Wei JIANG ,  Qing JI

IPC分类号： G01N25/20 ,  B23K26/50

摘要： The present invention discloses a laser heating single-sensor fast scanning calorimeter, which comprises an FSC sample chamber, a chip sensor positioned in the FSC sample chamber and used for loading a sample, a laser heater for heating the sample, an infrared camera for shooting a sample image, a communication terminal and a control electronic element, wherein a perspective window serving as a light path channel is arranged in a center of the FSC sample chamber, and the laser heater and the infrared camera are positioned at the top of the perspective window; the infrared camera is connected with the communication terminal; one end of the control electronic element is connected with the communication terminal, and the other end of the control electronic element is connected with the laser heater and the chip sensor.

公开(公告)号：US20190242837A1

公开(公告)日：2019-08-08

申请号：US16370734

申请日：2019-03-29

申请人： NANJING UNIVERSITY

发明人： Dongshan ZHOU ,  Evgeny ZHURAVLEV ,  Jing JIANG ,  Shaochuan LUO ,  Christoph SCHICK ,  Qi XUE ,  Xiaoliang WANG ,  Wei CHEN ,  Wei JIANG ,  Qing JI

IPC分类号： G01N25/72

CPC分类号： G01N25/72

摘要： The present invention discloses an apparatus for realizing high-speed cooling of a trace material by using liquid drop cooling, which comprises an injector connected with an injection driver and used for dropwise adding a volatile cooling liquid; a temperature sensor placed below the injector; a data collector used for collecting a thermopile signal and a heating resistor signal of the temperature sensor; a gas purger used for purging a cooled sample; and a control center, wherein the injector, the temperature sensor, the data collector and the gas purger are all connected with the control center.

公开(公告)号：US20190194387A1

公开(公告)日：2019-06-27

申请号：US16293595

申请日：2019-03-05

申请人： Nanjing University

发明人： Hong LI ,  Quanxing ZHANG ,  Jiaye SHENG ,  Wei HUANG ,  Wei JIANG ,  Aimin LI ,  Bingcai PAN

IPC分类号： C08G63/08 ,  C08G63/82 ,  C07D319/12 ,  B01J31/02

CPC分类号： C08G63/08 ,  B01J31/0244 ,  B01J31/0251 ,  B01J31/04 ,  C07D319/12 ,  C08G63/82

摘要： A method of preparing glycolide, the method including dehydrative oligomerization and catalytic depolymerization. The dehydrative oligomerization includes stepwise heating a glycolic acid aqueous solution from room temperature to a temperature of between 200 and 210° C., and maintaining the temperature at each corresponding temperature stage, to yield an oligoglycolic acid. The catalytic depolymerization includes adding a binary complex catalytic system to the oligoglycolic acid to yield a reactant mixture, stepwise heating the reactant mixture from room temperature to a temperature of between 280 and 285° C., and maintaining the temperature at each corresponding temperature stage.

公开(公告)号：US20190152939A1

公开(公告)日：2019-05-23

申请号：US16251047

申请日：2019-01-17

申请人： Nanjing University

发明人： Hong LI ,  Quanxing ZHANG ,  Jiaye SHENG ,  Na CHENG ,  Wei HUANG ,  Wei JIANG ,  Aimin LI

IPC分类号： C07D319/12

摘要： A method of purifying a cyclic ester, the method including: granulating a crude cyclic ester, an average particle size of resulting granules being 0.05-1.00 mm; adding the granules to 0-4° C. water to yield a mixture, a mass ratio of the water to the granules being (0.5-2):1; stirring the mixture, and performing solid-liquid separation on the mixture; repeating the stirring and solid-liquid separation for 1-4 times, to yield a purified cyclic ester; drying the purified cyclic ester at 0-4° C. and at an absolute pressure of less than or equal to 10 pascal for 4-6 hours, and continually drying the purified cyclic ester at 40-60° C. and at an absolute pressure of less than or equal to 5 pascal for 1-2 hours.

公开(公告)号：US20210188799A1

公开(公告)日：2021-06-24

申请号：US17249524

申请日：2021-03-04

申请人： NANJING UNIVERSITY ,  NANJING QUANKAI RESEARCH INSTITUTE OF BIOMATERIALS CO., LTD.

发明人： Wei JIANG ,  Yunbiao QI ,  Ping SUN ,  Wei HUANG ,  Aimin LI ,  Quanxing ZHANG

IPC分类号： C07D319/12 ,  C08G63/91 ,  B01J19/24 ,  B01J4/00 ,  B01J19/00 ,  B01D3/14 ,  B01D5/00 ,  B01D1/22

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.

公开(公告)号：US20240151963A1

公开(公告)日：2024-05-09

申请号：US18501734

申请日：2023-11-03

申请人： NANJING UNIVERSITY

发明人： Wei JIANG ,  Guihan WU

IPC分类号： G02B27/00 ,  G02B6/28

CPC分类号： G02B27/0087 ,  G02B6/2813

摘要： An optical phased array device, which can flexibly set the light splitting weight and has good scalability, includes a light splitting network, phase shifters, and emission units. Among them, the light splitting network of the device can set the optical power weight of the array element freely and has good scalability. The light splitting network of optical phased array consists of a series of basic elements, each of which can realize uniform or non-uniform light splitting of N channels. The light splitting network adopts a tree topology. The tree network structure can be freely designed, and the components used by the network nodes can also be freely selected. By freely designing the structure of the light splitting network and the components used by each node, the optical output distribution of the network can be set, so that the far field distribution of the optical phased array can be optimized.

公开(公告)号：US20160168316A1

公开(公告)日：2016-06-16

申请号：US14854009

申请日：2015-09-14

申请人： Nanjing University

发明人： Hong LI ,  Quanxing ZHANG ,  Xupeng ZONG ,  Aimin LI ,  Wei HUANG ,  Wei JIANG

IPC分类号： C08G63/08

CPC分类号： C08G63/08 ,  C08G63/78 ,  C08G63/823

摘要： A method for preparing high molecular weight poly(L-lactic acid) with high performance, including: a) providing a biogenic guanidine (BG) as a catalyst, and a nontoxic acid salt of an essential metal trace element as an activator (Act), and adding the catalyst, the activator, and L-lactide monomer to a polymerization reactor; b) evacuating under vacuum and charging the polymerization reactor with nitrogen for three consecutive times to remove air, and allowing the L-lactide monomer to undergo bulk polymerization under vacuum. The bulk polymerization includes a first reaction stage and a second reaction stage, which are separately carried out at different temperatures, pressures, and reaction times.

摘要翻译： 一种具有高性能的高分子量聚（L-乳酸）的制备方法，包括：a）提供生物胍（BG）作为催化剂，以及必需金属微量元素的无毒酸盐作为活化剂（Act） 并将催化剂，活化剂和L-丙交酯单体加入到聚合反应器中; b）在真空下抽真空，用氮气连续三次装入聚合反应器以除去空气，并使L-丙交酯单体在真空下进行本体聚合。 本体聚合包括在不同温度，压力和反应时间分别进行的第一反应阶段和第二反应阶段。

公开(公告)号：US20160096917A1

公开(公告)日：2016-04-07

申请号：US14965873

申请日：2015-12-10

申请人： Nanjing University

发明人： Hong LI ,  Quanxing ZHANG ,  Na CHENG ,  Tianrong ZHANG ,  Wei JIANG ,  Bingcai PAN

IPC分类号： C08G63/16

CPC分类号： C08G63/16 ,  C08G63/85 ,  C08G63/87

摘要： A method for synthesizing poly(butylene succinate-co-butylene adipate) (PBSA), including: a) adding raw materials including succinic acid, adipic acid, and 1,4-butanediol into a reaction still; increasing the temperature in the reaction still to 130° C., and stiffing the raw materials, then keeping the temperature in the reaction still at 170-200° C., and dehydrating for 1-3 hours at atmospheric pressure, to yield an oligomer of PBSA; and b) decreasing the temperature of the reaction still to 100° C., and adding a composite catalyst system, the total addition of the composite catalyst system accounting for one ten-thousandth to one ten-millionth of a total weight percentage of the raw materials; uniformly stiffing and mixing the composite catalyst system and reactants, slowly vacuum pumping the reaction still, heating the reaction still to a temperature of 200-240° C. and allowing the composite catalyst system and the reactants to react for 10-20 hrs.

摘要翻译： 聚（丁二酸丁二酸酯 - 己二酸丁二酯）（PBSA）的合成方法，包括：a）将琥珀酸，己二酸和1,4-丁二醇的原料添加到反应釜中; 将反应温度升高至130℃，并使原料硬化，然后将反应温度保持在170-200℃，并在大气压下脱水1-3小时，得到低聚物 的PBSA; 和b）将反应温度降低至100℃，加入复合催化剂体系，复合催化剂体系的总添加量占原料总重量百分比的十万分之一到百万分之一 材料; 均匀硬化和混合复合催化剂体系和反应物，缓慢抽真空反应，将反应物加热至200-240℃，使复合催化剂体系和反应物反应10-20小时。