公开(公告)号：US20230212351A1

公开(公告)日：2023-07-06

申请号：US17641080

申请日：2020-09-07

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Junpeng ZHAO ,  Shan LIU ,  Guangzhao ZHANG

IPC: C08G65/26

CPC classification number: C08G65/2615 ,  C08G65/2654 ,  C08G2650/38

Abstract: The invention provides a method for sequence controllable block copolymerization of a cyclic ester monomer and an epoxy monomer, including: in an inert atmosphere, adding the epoxy monomer and/or the cyclic ester monomer into a catalytic initiating system including an organic base and an alkyl borane for reaction, so as to obtain a sequence controllable polyether-polyester block copolymer of the cyclic ester monomer and the epoxy monomer, i.e. a polyester-b-polyether or a polyether-b-polyester. The invention can prepare various polyether-polyester block copolymers of which the molecular weights, block sequences, block ratios and pendant group combinations can be flexibly adjusted. The invention provides a method for continuously preparing an aliphatic polyester-polyether block copolymer by a one-pot method utilizing a catalytic system of a metal-free Lewis acid-base pair.

公开(公告)号：US20220276166A1

公开(公告)日：2022-09-01

申请号：US17749162

申请日：2022-05-20

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Xiangjun GONG ,  Wenzhang TIAN ,  Yongping ZENG ,  Lianjun BAO ,  Guangzhao ZHANG ,  Xiao LIANG ,  Xiawen QIU

IPC: G01N21/64 ,  G01N13/00 ,  G01N33/18

Abstract: Provided are a synchronous fluorescence detector for observing the interface concentration of fluorescent pollutants and application method. The detector comprises a first electric displacement platform, a quartz cuvette, an excitation light path, a collection light path and a second electric displacement platform. The application method comprises the following steps: first exciting fluorescent pollutants by utilizing UV light with specific wavelengths to emit fluorescent light; then collecting fluorescence signals emitted by the excited fluorescent pollutants to the greatest extent by utilizing an UV anti-reflection convex lens combination; and finally, processing the fluorescent signals acquired by a photomultiplier by utilizing a difference method to determine a precise light intensity of a thin layer which is moved at a specific spacing by utilizing the electric displacement platforms so as to determine fugacity distribution of the fluorescent pollutants in the microlayer near an interface.

公开(公告)号：US20160185913A1

公开(公告)日：2016-06-30

申请号：US14907437

申请日：2013-11-11

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Guangzhao ZHANG ,  Chunfeng MA

IPC: C08G77/14 ,  C09D5/16

CPC classification number: C08G77/14 ,  C08F30/08 ,  C08F230/08 ,  C08G63/08 ,  C08G63/695 ,  C08G65/16 ,  C08G65/2615 ,  C09D5/16 ,  C09D5/165 ,  C09D5/1668 ,  C09D5/1675 ,  C09D133/10 ,  C09D143/04 ,  C09D167/04 ,  C09D171/00 ,  C08F220/06 ,  C08F220/14 ,  C08F218/06 ,  C08F2220/1825 ,  C08F220/34

Abstract: A method for preparing a main chain scission-type polysilyl (meth)acrylate resin and application thereof. The method comprises: a cyclic monomer, vinyl monomer and vinyl silyl ester monomer are mixed in a solvent at a formulation ratio, then added a composite initiator in a mass percentage of 0.01-5% based on the total amount of the monomers, and reacted at a temperature of 25-150° C., and under the protection of argon or nitrogen gas, so as to prepare the main chain scission-type polysilyl (meth)acrylate resin, wherein the monomers are consisted of 5-95% by mass of cyclic monomer, 0-90% by mass of vinyl monomer and 5-95% by mass of vinyl silyl ester monomer. The resulting resin can not only be hydrolyzed on the side chain silyl ester segment under the effect of the sea water, but also occur chain scission on the main chain polyester segment under the effect of the seawater, so as to solve the dependency of the traditional self-polishing material on the sailing speed, effectively control the release of the antifouling agent at a constant rate, ensure the active substance preserved on the coating surface of the ships, and properly meet the antifouling requirements on the low sailing speed ships, submarines and off-shore oil platform facilities.

Abstract translation: 一种主链断裂型聚（甲基）丙烯酸聚酰酯树脂的制备方法及其应用。 该方法包括：将环状单体，乙烯基单体和乙烯基甲硅烷基酯单体以配制比混合在溶剂中，然后加入基于单体总量的质量百分比为0.01-5％的复合引发剂，并反应 在25-150℃的温度下，在氩气或氮气的保护下，制备主链断裂型聚（甲基）丙烯酸聚酰酯树脂，其中单体由5-95质量％ 的环状单体，0〜90质量％的乙烯基单体和5-95质量％的乙烯基甲硅烷基酯单体。 所产生的树脂不仅可以在海水的作用下在侧链甲硅烷基酯部分水解，而且在海水的作用下也会在主链聚酯链段发生断链，从而解决传统的 自抛光材料，以一定的速度有效控制防污剂的释放，确保活性物质保存在船舶涂料表面，适当满足低速船舶，潜艇和防水剂的防污要求， 离岸石油平台设施。