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    METHOD FOR PRODUCING HIGHLY POLYMERIZABLE N-VINYL CARBOXYLIC ACID AMIDE MONOMER
    3.
    发明申请
    METHOD FOR PRODUCING HIGHLY POLYMERIZABLE N-VINYL CARBOXYLIC ACID AMIDE MONOMER 有权

    公开(公告)号：US20220213025A1

    公开(公告)日：2022-07-07

    申请号：US17614153

    申请日：2020-12-23

    申请人： SHOWA DENKO K.K.

    发明人： Naoyuki TANAKA ,  Katsumi MIKAMI ,  Takamitsu KOBAYASHI

    IPC分类号： C07C231/12 ,  C07C231/24

    摘要： A method for producing a highly polymerizable N-vinyl carboxylic acid amide monomer includes (A) melting a crude N-vinyl carboxylic acid amide monomer comprising 50 to 88 mass % of an N-vinyl carboxylic acid amide monomer by heating, followed by cooling for precipitation, and subjecting precipitated N-vinyl carboxylic acid amide monomer crystals to solid-liquid separation (step (A)), and (B) further dissolving the N-vinyl carboxylic acid amide monomer crystals separated in the step (A) in a mixed solvent of ethyl acetate and an aliphatic hydrocarbon having 6 to 7 carbon atoms, then performing crystallization, performing solid-liquid separation, and recovering an N-vinyl carboxylic acid amide monomer purified product (step (B)), wherein a mass ratio of ethyl acetate/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.01 to 0.5, and a mass ratio of aliphatic hydrocarbon having 6 to 7 carbon atoms/N-vinyl carboxylic acid amide monomer crystal in step (B) is 0.5 to 3.0.

    Nicotinamide Dummy Template Surface Molecularly Imprinted Polymer and Preparation Method and Application thereof
    4.
    发明申请
    Nicotinamide Dummy Template Surface Molecularly Imprinted Polymer and Preparation Method and Application thereof 有权

    公开(公告)号：US20220105491A1

    公开(公告)日：2022-04-07

    申请号：US17551338

    申请日：2021-12-15

    申请人： Jiangnan University

    发明人： Hongxin WANG ,  Jingyu CHEN ,  Shijia WU ,  Xinlin WEI ,  Xin HUANG ,  Li WANG

    IPC分类号： B01J20/26 ,  C08F292/00 ,  B01J20/30 ,  C07C231/24 ,  C07C37/82 ,  A23F3/20 ,  B01D15/22

    摘要： The disclosure discloses a nicotinamide dummy template surface molecularly imprinted polymer, a preparation method and application thereof, and belongs to the technical field of chemical materials. The preparation method of the disclosure includes the steps of preparing a modified silica gel carrier, preparing a dummy template surface molecularly imprinted polymer and the like. The disclosure uses nicotinamide, a structural analogue of imidacloprid and acetamiprid, as a dummy template to prepare a silica gel surface molecularly imprinted polymer. The polymer not only can effectively avoid pollution caused by the leakage of template molecules, but also can specifically remove imidacloprid and acetamiprid from water-soluble tea extracts. The removal rate of imidacloprid and acetamiprid is greater than 96% and 93%, respectively, and the loss of tea polyphenols in the extracts is less than 10%. In addition, the molecularly imprinted adsorption column prepared by the disclosure can be eluted with ethanol solution, and the eluted adsorption column can be recycled, so the disclosure can be well applied to the preparation technology of tea extracts and has good application prospects.

    Method of purifying pine chemical compositions from aldehydes
    7.
    发明授权
    Method of purifying pine chemical compositions from aldehydes 有权

    公开(公告)号：US10822302B2

    公开(公告)日：2020-11-03

    申请号：US16695231

    申请日：2019-11-26

    申请人： Kraton Polymers LLC

    发明人： Jos H. M. Lange ,  Mark C. Schaapman

    IPC分类号： C07C233/65 ,  C07C231/24

    摘要： A method to reduce the aldehyde content of a pine chemical composition is disclosed. The pine chemical composition is selected from gum turpentine, gum rosin, CST BLS, CTO, depitched CTO, DTO, TOH, TOR, TOP, TOFA, fractionated TOFA, TOFA dimer, TOFA trimer, TOFA monomer, isostearic acid, stearic acid, and ester- and amide derivatives thereof. The pine chemical composition is treated with an aldehyde scavenger such as anthranilamide at a temperature between 20° C. to 300° C., for 1 minute to 5 hours.

    Systems with anti-fouling control and methods for controlling fouling within a channel of a plug flow crystallizer
    8.
    发明授权
    Systems with anti-fouling control and methods for controlling fouling within a channel of a plug flow crystallizer 有权

    公开(公告)号：US10766014B2

    公开(公告)日：2020-09-08

    申请号：US15496355

    申请日：2017-04-25

    申请人： Purdue Research Foundation

    发明人： Andy Koswara ,  Zoltan Kalman Nagy

    IPC分类号： C30B29/54 ,  B01J19/00 ,  C07C227/42 ,  C07C231/24 ,  B08B7/00 ,  B08B17/00 ,  C30B7/08 ,  B01D9/00

    摘要： The invention generally relates to systems with anti-fouling control and methods for controlling fouling within a channel of a plug flow crystallizer. In certain aspects, the invention provides a system that includes a plug flow crystallizer having a channel, one or more heating/cooling elements, each operably associated with a different segment of the channel, and a controller. The controller is operably coupled to the one or more heating/cooling elements and configured to implement a temperature profile within the channel of the plug flow crystallizer that grows crystals in a plug of fluid that flows through a first segment of the channel and dissolves encrust in a second segment of the channel while having minimal impact on crystal growth in the plug of fluid in the second segment of the channel. In certain embodiments, these segments may be cyclically alternated, in that the segment in which crystal grows in one cycle becomes the segment in which crystal dissolves in the next cycle and vice versa, to realize a fully continuous crystallization process.