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One
Application of chitosan guanidine cationic waterborne polyurethane in the preparation of antibacterial coating
Publication No.: cn110964205a publication date: April 7, 2020 patentee: Tianjin University
Abstract: the invention discloses the application of chitosan guanidine cationic waterborne polyurethane in the preparation of antibacterial coating. With polyester diol as the soft segment, diisocyanate as the hard segment and stannous octanoate as the catalyst, the prepolymer with isocyanate sealing end is synthesized. Under the environment of acetone dilution, the prepolymer reacts with small molecular chain extender diethylene glycol and polyethylene glycol for preliminary chain extension, and the cationic hydrophilicity is introduced The chain extender N methyl two ethanolamine was further extended to produce quaternary ammonium salt under neutralization of glacial acetic acid. Neutralized products were then emulsified by chitosan guanidine aqueous solution under ice water bath to form chitosan guanidine / cationic waterborne polyurethane emulsion. Chitosan guanidine / cationic waterborne polyurethane coating can be obtained by coating on tetrafluoroethylene plate with coating apparatus. The polyurethane coating of chitosan guanidine has high transparency, excellent mechanical properties, thermal stability, water resistance and adhesion. Therefore, the coating is expected to be used in the field with high requirements for weather resistance.
Two
An integrated anticorrosive and antifouling coating for coating repair and its preparation method
Publication No.: cn110964407a publication date: April 7, 2020
Patentee: no.725 Research Institute of China Shipbuilding Industry Corporation
Abstract: an integrated anticorrosive and antifouling coating for coating repair and its preparation method. The coating is composed of anticorrosive components and antifouling components separately packed and mixed in use. The anticorrosive components include epoxy resin, modified epoxy resin, bifunctional active diluent, fumed silica, antirust pigment filler, solvent and amine curing agent added in use; and Antifouling components include hydroxyl terminated silicone resin, phenyl methyl silicone oil, antifouling agent, solvent and silane crosslinking agent; the mass ratio of anti-corrosion component and antifouling component is 3:1-1:3. The first film thickness of the anti-corrosion and anti fouling coating can reach more than 600 μ m, and the anti fouling period is more than one year. It can be used for quick repair of damaged parts under hull waterline, such as large ships and fishing boats, so as to realize the anti-corrosion and anti pollution function of one-time coating, reduce the number of construction courses and maintenance costs.
Three
A polyurea modified anti pollution coating and its preparation and Application
Publication No.: cn110964388a publication date: April 7, 2020
Patentee: Tianjin kerida coating Chemical Co., Ltd
Abstract: the invention discloses a polyurea modified anti pollution coating and a preparation method and application thereof. The coating is composed of main agent and curing agent, in which the weight of main agent and curing agent is 100:10-100:40, and the film thickness is 40? 60 μ M. The polyurea modified high anti pollution coating does not contain heavy metals and restrictive solvents. The new anti pollution coating improves the solid content of the coating under the construction viscosity and reduces the VOC content. It is a long-term, high weather resistant, high pollution-resistant, self-cleaning high-grade external finish, which can meet the needs of various large-scale public buildings, airports, gymnasiums, large railway bridges, offshore platforms, luxury yachts, plateau buildings, high humidity and high cold.
Four
A high whiteness and high coating rate coil white finish and its preparation and Application
Publication No.: cn110964413a publication date: April 7, 2020 patentee: libon industrial coatings (Shanghai) Co., Ltd
Abstract: the invention discloses a high whiteness and high coating rate coil white finish paint, which comprises the following parts by weight: saturated polyester resin A30? 41 parts; flexible saturated polyester resin B3? 20 parts; amino resin 3? 7 parts; catalyst 0.1? 0.5 parts; titanium dioxide 32? 40 parts; solvent 8? 15 parts; auxiliary agent 0.5? 13 parts. The white finish has high whiteness and high coating rate, which is suitable for coil finish. The invention also discloses a preparation method and application of the top coat.
Five
Waterborne wood lacquer emulsion and its preparation and Application
Publication No.: cn110964400a publication date: April 7, 2020
Patentee: Institute of chemistry, Chinese Academy of Sciences
Abstract: the invention relates to the field of waterborne wood lacquer emulsion, and discloses a waterborne wood lacquer emulsion, which is prepared from the following components by weight fraction: nuclear layer monomer 5 - 20 parts, intermediate layer monomer 5 - 20 parts, shell monomer 5 - 20 parts, initiator 0.1 - 0.5 parts, emulsifier 0.1? 4 parts, buffer 0.1 0.1 ingredients, neutralization agent 0.1, water content and crosslinking agent, and emulsion. The colloidal particle has a core layer, an intermediate layer and a shell layer structure. The core layer TG is 80 ℃? 110 ℃, the intermediate layer TG is 50 ℃? 80 ℃, and the shell TG is 20 ℃? 50 ℃. The water-borne wood lacquer emulsion provided by the invention has low film forming temperature, high hardness of the paint film, strong adhesion and good resistance.
Six
A preparation method of thermal matching coating in the whole temperature range of high temperature composite
Publication No.: cn106966699b publication date: April 7, 2020
Patentee: Beijing University of Aeronautics and Astronautics
Abstract: the invention provides a preparation method of heat matching coating of high-temperature composite materials in the whole temperature range, which includes the steps of preparation of self sealing adhesive layer, preparation of heat matching functional layer and preparation of high-temperature barrier layer. The invention introduces a self sealing adhesive layer with good physical and chemical compatibility with the high-temperature composite matrix, uses the material with excellent negative thermal expansion effect as the thermal matching functional layer, uses the high-temperature ablation resistant material as the high-temperature barrier layer, so that the thermal expansion coefficient of the high-temperature composite material is completely matched from room temperature to high temperature, and the high-temperature composite material is prepared It is a kind of high-temperature coating that can be applied to the whole temperature range. It can make the coating and the substrate of high-temperature composite not crack at low temperature and increase the service life of the coating.
Seven
Preparation of superhydrophobic drag reduction coating
Publication No.: cn106563626b publication date: April 7, 2020
Patentee: Nanjing University of Technology
Abstract: the invention discloses a preparation method of superhydrophobic drag reduction coating, which can be used for the surfaces of metals, ceramics, plastics, etc. In the method, the surface of the substrate is first grooved, and PMMA and hydrophobic silica are mixed and sprayed on the substrate, hydrophobic silica particles are embedded in PMMA, and the molecular chain of PMMA firmly combines hydrophobic silica and the substrate bottom surface, increases the binding force between hydrophobic silica particles, and improves The wear resistance and adhesion of the coating are obtained, and the micro nano rough structure is formed. The method of the invention is simple, can be used for various complex shapes and large surface objects, can quickly form coating, and is easy to industrial production, is suitable for low temperature, humidity, corrosion environment, and has a wide application prospect in military, navigation, pipeline transportation, construction and other fields.
Eight
Curable film-forming composition including reactive functional polymer and polysiloxane resin, multilayer composite coating and use method thereof
Publication No.: cn110959029a publication date: April 3, 2020
Patentee: PPG industrial Ohio company
Abstract: a curable film-forming composition is provided, which comprises: (a) a polymer adhesive comprising a reactive functional group; (b) a curing agent comprising a functional group having a reactivity with the reactive functional group of (a); and (c) a polysiloxane resin comprising an aromatic functional group and an end active hydrogen group. In some examples of the invention, the polymer binder (a) comprises acrylic polyols prepared from a mixture of monomers containing hydroxyl functional monomers, and the curable film-forming composition also comprises a rheological modifier comprising: (1) a non-aqueous dispersion of an internally crosslinked organic polymer; (2) a silica dispersion; and / or (3) an inverse of an amine and an isocyanate Product. A coating substrate including the curable film-forming composition and a method for forming a composite coating on the substrate are also provided.
Nine
A anticorrosive coating for buried steel members and its preparation and Application
Publication No.: cn107513348b publication date: April 3, 2020
Patentee: Northeast University, Metal Research Institute of Chinese Academy of Sciences, Shenyang Hunnan modern tram operation Co., Ltd
Abstract: the invention relates to a protective technology for buried metal components, in particular to an anticorrosive coating for buried steel components, a preparation method and application thereof. According to the mass fraction, the coating consists of 30-100 parts of silicone resin, 20-80 parts of epoxy resin, 5-60 parts of high temperature resistant and anti-corrosion filler, 1:3-9 of curing agent and epoxy resin, and 0-50 parts of diluent. Put the anti-corrosion filler into the grinder and mix for 5-10min, and put the organosilicon resin, epoxy resin, anti-corrosion filler and xylene into the mixing tank in proportion and mix evenly to obtain component A. Mix component A and component B of curing agent in proportion and mix them evenly. Prepare the coating on the surface of metal parts after surface sandblasting treatment. Keep the coating in an oven at (150 ± 5) ℃ for 2-3 hours and then air cool it to room temperature. Then the anti-corrosion coating is obtained. The coating has excellent anti-corrosion performance and solves the corrosion problem of the metal components serving in the high humidity and high salt soil environment.
Ten
A high adhesion waterborne electrostatic white paint and its preparation method
Publication No.: cn110951346a publication date: April 3, 2020
Patentee: Shanghai zhanchen coating Co., Ltd. | Qingdao zhanchen New Material Co., Ltd
Abstract: the present invention has a high adhesion waterborne electrostatic white surface paint, which comprises the following components: 45% to 70%, titanium white powder: 16% to 32%, mute powder: 0.1% to 3%, wax powder or wax emulsion: 0.5% to 3%, anti scratch functional filler: 3% to 8%, dispersing wetting agent: 0.5% to 0.5%, film forming AIDS: 0.5% to 8%, anti hang auxiliary: - to -, thickener: - ~ - , leveling agent: 0.2% - 3%, base material wetting agent: 0.2% - 2.0%, other additives: 0.5% - 1.5%, water: 1% - 15%. The product of the invention meets the requirements of GB / T 23999? 2008, which is safe and environmental friendly; has good leveling property, strong electrostatic absorption, good wettability to the base material, wear resistance and scratch resistance, good chemical resistance, fine and smooth paint film; is easy to produce and manufacture, and improves the construction safety in the coating process. If you want to get more patent information of domestic coatings, scan QR code and edit wechat message "patent" more open patent information and so on!
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