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1. WO2020088429 - WATER-BASED INSULATING VARNISH FOR TRANSFORMER, PREPARATION METHOD AND APPLICATION THEREOF

Publication Number WO/2020/088429
Publication Date 07.05.2020
International Application No. PCT/CN2019/113861
International Filing Date 29.10.2019
IPC
C09D 175/06 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
175Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
04Polyurethanes
06from polyesters
C09D 5/25 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
5Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
25Electrically-insulating paints or lacquers
C08G 63/20 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
02Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds
12derived from polycarboxylic acids and polyhydroxy compounds
16Dicarboxylic acids and dihydroxy compounds
20Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
C08G 18/72 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
CPC
C08G 18/0823
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
08Processes
0804Manufacture of polymers containing ionic or ionogenic groups
0819containing anionic or anionogenic groups
0823containing carboxylate salt groups or groups forming them
C08G 18/3281
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
30Low-molecular-weight compounds
32Polyhydroxy compounds; Polyamines; Hydroxyamines
3271Hydroxyamines
3278containing at least three hydroxy groups
3281containing three hydroxy groups
C08G 18/348
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
30Low-molecular-weight compounds
34Carboxylic acids; Esters thereof with monohydroxyl compounds
348Hydroxycarboxylic acids
C08G 18/4219
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
42Polycondensates having carboxylic or carbonic ester groups in the main chain
4205containing cyclic groups
4208containing aromatic groups
4211derived from aromatic dicarboxylic acids and dialcohols
4219from aromatic dicarboxylic acids and dialcohols in combination with polycarboxylic acids and/or polyhydroxy compounds which are at least trifunctional
C08G 18/6659
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
66Compounds of groups C08G18/42, C08G18/48, or C08G18/52
6633Compounds of group C08G18/42
6659with compounds of group C08G18/34
C08G 18/73
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
73acyclic
Applicants
  • 苏州太湖电工新材料股份有限公司 SUZHOU TAIHU ELECTRIC ADVANCED MATERIAL CO LTD [CN]/[CN]
Inventors
  • 井丰喜 JING, Fengxi
  • 吴斌 WU, Bin
  • 顾建峰 GU, Jianfeng
  • 张明玉 ZHANG, Mingyu
  • 张春琪 ZHANG, Chunqi
  • 景录如 JING, Luru
Agents
  • 苏州知途知识产权代理事务所(普通合伙) SUZHOU ZHITU INTELLECTUAL PROPERTY FIRM
Priority Data
201811266765.429.10.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) WATER-BASED INSULATING VARNISH FOR TRANSFORMER, PREPARATION METHOD AND APPLICATION THEREOF
(FR) VERNIS ISOLANT À BASE AQUEUSE POUR TRANSFORMATEUR, SON PROCÉDÉ DE PRÉPARATION ET SON APPLICATION
(ZH) 一种电子变压器用的水性绝缘漆及其制备方法和应用
Abstract
(EN)
Disclosed is a water-based insulating varnish for a transformer, a preparation method thereof, and an application thereof in dipping a transformer. Raw materials of the insulating varnish comprise polyol, acid anhydride, a neutralizing agent, a co-solvent, a water-based curing agent, water, diisocyanate and a chain extender. The polyol is composed of glycerol and neopentyl glycol. The acid anhydride is composed of phthalic anhydride and trimellitic anhydride. By means of mixing glycerol, neopentyl glycol, phthalic anhydride and trimellitic anhydride and causing a polycondensation reaction, a hydroxyl-terminated hyperbranched polyester is prepared. The hydroxyl-terminated hyperbranched polyester is reacted with diisocyanate, and then the neutralizing agent, the co-solvent, the chain extender and water are added and reacted. The water-based curing agent is then added and mixed to obtain the insulating varnish. The insulating varnish can prevent the transformer dipped with the water-based insulating varnish from being subjected to a secondary soldering at a high temperature of about 400°C, and can impart thereto soldering and conductive characteristics at an operating temperature of a plug-in circuit board, and can be further applied to a plug-in circuit board, streamlining process steps and saving energy.
(FR)
L'invention concerne un vernis isolant à base aqueuse pour un transformateur, un procédé de préparation de celui-ci et une application de celui-ci en traitement d'un transformateur par trempage. Les matières premières du vernis isolant comprennent du polyol , de l'anhydride d'acide, un agent de neutralisation, un co-solvant, un agent durcisseur à base aqueuse, de l'eau, du diisocyanate et un agent d'allongement de chaîne. Le polyol est composé de glycérol et de néopentyl glycol. L'anhydride d'acide est composé d'anhydride phtalique et d'anhydride trimellitique. En mélangeant du glycérol, du néopentyl glycol, de l'anhydride phtalique et de l'anhydride trimellitique et en provoquant une réaction de polycondensation, on prépare un polyester hyper-ramifié terminé par hydroxyle. Le polyester hyper-ramifié terminé par hydroxyle est amené à réagir avec le diisocyanate, puis l'agent de neutralisation, le co-solvant, l'agent d'allongement de chaîne et l'eau sont ajoutés et amenés à réagir. L'agent durcisseur à base aqueuse est ensuite ajouté et mélangé pour obtenir le vernis isolant. Le vernis isolant permet d'empêcher le transformateur traité par trempage avec le vernis isolant à base aqueuse d'être soumis à un brasage secondaire à une température élevée d'environ 400 °C et permet de lui conférer des caractéristiques de brasage et de conduction à une température de fonctionnement d'une carte de circuit imprimé enfichable et peut en outre être appliqué à une carte de circuit imprimé enfichable, ce qui rationalise des étapes de traitement et économise de l'énergie.
(ZH)
一种电子变压器用的水性绝缘漆、其制备方法及在浸渍电子变压器中的应用,该绝缘漆的原料包括多元醇、酸酐、中和剂、助溶剂、水性固化剂、水、二异氰酸酯和扩链剂,多元醇由丙三醇和新戊二醇构成,酸酐由邻苯二甲酸酐和偏苯三酸酐构成。通过使丙三醇、新戊二醇、邻苯二甲酸酐和偏苯三酸酐混合发生缩聚反应,制得端羟基超支化聚酯,使端羟基超支化聚酯和二异氰酸酯反应,再加入中和剂、助溶剂、扩链剂和水,反应,加入水性固化剂,混合制得。该绝缘漆能够使得浸渍水性绝缘漆的电子变压器免于在400℃左右高温下先行进行二次焊锡,并能够在插接电路板的工作温度下赋予其焊锡导电特性,进而能够应用于插接电路板,精简了工艺步骤,且节约了能源。
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