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Patent Agency Ranking
公开(公告)号：US20150065707A1
公开(公告)日：2015-03-05
申请号：US14368092
申请日：2012-11-30
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Bingtao Tang , Shufen Zhang , Wei Ma
IPC: C07D251/50 , C07D251/38 , C09B49/00 , C07D251/44
CPC classification number: C07D251/50 , C07D251/38 , C07D251/44 , C09B49/00 , D06P1/30
Abstract: The present invention provides a group of water-soluble sulfur dye having carboxyl groups. For the kind of dye, a sulfur dye is first reduced to a leuco compound by sodium sulfide, and the leuco compound reacts with an active compound containing carboxyl groups to obtain a water-soluble sulfur dye containing the carboxyl group. The water-soluble sulfur dye provided by the present invention is applicable to dying of cotton, wool, silk, and leather. Being both water-soluble and carboxyl group reactive, the product has a simple application process and desirable color fastness, thereby having broad application prospects.
Abstract translation: 本发明提供一组具有羧基的水溶性硫化染料。 对于这种染料，硫化钠首先通过硫化钠还原成无色化合物，并且无色化合物与含有羧基的活性化合物反应，得到含有羧基的水溶性硫化染料。 本发明提供的水溶性硫化染料适用于棉，羊毛，丝绸和皮革的染色。 既具有水溶性又具有羧基反应性，产品使用简便，色牢度好，具有广泛的应用前景。
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公开(公告)号：US12286494B2
公开(公告)日：2025-04-29
申请号：US17938110
申请日：2022-10-05
Applicant: Dalian University of Technology
Inventor： Shufen Zhang , Changtong Zhou , Wenbin Niu , Wei Ma , Bingtao Tang , Suli Wu
IPC: C08F222/10
Abstract: A double-inverse opal photonic crystal resin film is formed by embedding nanospheres in pores of polyacrylate inverse opal framework material and then filling the pores of the double-inverse opal photonic crystal resin film with an ethanol solution with hydrophilic acrylamide dissolved therein followed by photopolymerization to form a polyacrylamide network, so as to obtain the double-inverse opal photonic crystal resin film using water as ink. A mass fraction of hydrophilic acrylamide in the ethanol solution is 2 to 8 wt. %. The resin film can induce water to penetrate into the pores of the double-inverse opal photonic crystal resin film, making the nanospheres in the pores of the inverse opal framework distribute from random to order under the action of buoyancy force, thereby eliminating scattering interference and producing brilliant structural colors by regulating refractive index contrast.
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公开(公告)号：US12242048B2
公开(公告)日：2025-03-04
申请号：US17756714
申请日：2020-09-08
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Shufen Zhang , Yong Qi , Wenbin Niu , Suli Wu , Wei Ma , Bingtao Tang
IPC: G02B26/00 , C08F222/10 , C08J5/18 , G02B1/00
Abstract: A bilayer photonic crystal photoswitch thin-film device having the optical characteristics of both 2D and 3D photonic crystals, and a preparation method thereof are provided. When the bilayer photonic crystal photoswitch thin-film device is rotated periodically, different colors can be observed at a fixed rotation angle, that is, the device has the attribute of changing colors by means of rotation, and can thus realize the opening and closing of an optical path. The bilayer photonic crystal photoswitch thin-film new device has broad application prospects in the fields of photoswitches, optical waveguides, optical prisms, warming signs, anti-counterfeiting and information coding, etc.
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公开(公告)号：US11071967B2
公开(公告)日：2021-07-27
申请号：US15776985
申请日：2017-03-02
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Wei Ma , Shibo Duan , Shuangen Yu , Fanqing Meng , Ren Wang , Jun Xu , Liyan Guo , Lei Wu , Zhuo Liu , Dazhi Tan
Abstract: The invention belongs to the field of chemical separation, hydrometallurgy and resource recovery and provides a method for preparing and applying of ion-keeper adsorbent. By adjusting the pH to selective oxidation to achieve the oxidation of ferrous iron into ferric iron. Separates the iron after the hydrothermal reaction; By using of ion imprint “ion keeper” effect and biomass as raw materials, to prepare the adsorbent with internal rules, hierarchical pores and high selectivity. It can be used for deep purification of chromium solution, such as iron, aluminum, vanadium and other impurities in the solution; After the deep purification of chromium solution, then adjusting the pH, adding appropriate hydrating agent, by hydrothermal precipitation treatment of chrome, filtration, acid washing and calcination to obtain chromium oxide crystal. It achieves the purification of chromium, iron, aluminum and chromium. The recycling and comprehensive utilization of waste resources are also realized. The process is simple, the iron, aluminum, vanadium and other impurities are in the selective adsorption. Chromium solution after deep purification can be processed for high purity chromium products to provide technical support.
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公开(公告)号：US09193696B2
公开(公告)日：2015-11-24
申请号：US14368092
申请日：2012-11-30
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Bingtao Tang , Shufen Zhang , Wei Ma
IPC: C07D251/50 , C07D251/44 , C07D251/38 , C09B49/00 , D06P1/30
CPC classification number: C07D251/50 , C07D251/38 , C07D251/44 , C09B49/00 , D06P1/30
Abstract: The present invention provides a group of water-soluble sulfur dye having carboxyl groups. For the kind of dye, a sulfur dye is first reduced to a leuco compound by sodium sulfide, and the leuco compound reacts with an active compound containing carboxyl groups to obtain a water-soluble sulfur dye containing the carboxyl group. The water-soluble sulfur dye provided by the present invention is applicable to dying of cotton, wool, silk, and leather. Being both water-soluble and carboxyl group reactive, the product has a simple application process and desirable color fastness, thereby having broad application prospects.
Abstract translation: 本发明提供一组具有羧基的水溶性硫化染料。 对于这种染料，硫化钠首先通过硫化钠还原成无色化合物，并且无色化合物与含有羧基的活性化合物反应，得到含有羧基的水溶性硫化染料。 本发明提供的水溶性硫化染料适用于棉，羊毛，丝绸和皮革的染色。 既具有水溶性又具有羧基反应性，产品使用简便，色牢度好，具有广泛的应用前景。
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