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Quick-dry solvent-free anti-sagging polyurethane water-proof paint and preparation method thereof

A polyurethane waterproof and solvent-free technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of slow drying time and achieve the effects of improved thixotropic performance, excellent physical and mechanical properties, and fast film-forming time

Active Publication Date: 2019-02-12
JIANGSU CANLON BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent achieves the anti-sag effect to a certain extent, it still adds a solvent in order to reduce the viscosity, and the drying time is relatively slow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This example provides a quick-drying type solvent-free anti-sag polyurethane waterproof coating, its raw materials include 400kg polyurethane prepolymer, 100kg DINP plasticizer produced by Taiwan Liancheng, 20kg zoldine RD20 oxazolidine reactive diluent from American angus company , 1kg of silane coupling agent WD50 from Hubei Wuhan University Silicone Co., Ltd., 0.5kg of pentamethyldipropylenetriamine from American Air Chemicals, 0.3kg of tetramethylethylenediamine from Japan Tosoh, 0.2kg from Shanghai Kaisai Chemical Co., Ltd. 1,8-diazacyclo[5,4,0]undecene, 0.5kg p-toluenesulfonyl isocyanate small molecule water remover from BASF, Germany, 0.5kg magnesium oxide from Wuxi Zehui Chemical, 0.5kg Jiangsu Qunxin Calcium oxide, 2kg BYK 066N defoamer, 150kg Suzhou Lida superfine LD600 ground calcium carbonate, 100kg Hunan Jinjian B-type nano calcium carbonate, 5kg Japanese Tokuyama hydrophobically modified fumed silica PM20L.

[0058] Preparation of polyurethane prepolymer, ...

Embodiment 2

[0065] This example provides a quick-drying solvent-free anti-sagging polyurethane waterproof coating, its raw materials include 400kg polyurethane prepolymer, 50kg DINP plasticizer produced by Taiwan Liancheng, 20kg zoldine RD20 oxazolidine reactive diluent from American angus company , 1kg f108 Hangzhou Lin'an auxiliary agent, 0.5kg pentamethyldipropylenetriamine from American Air Chemicals, 0.5kg tetramethylethylenediamine from Japan Tosoh, 0.5kg 1,8-diazo from Shanghai Kaiser Chemicals Heterocyclic [5,4,0] undecene, 1kg p-toluenesulfonyl isocyanate small molecule water remover from BASF, 0.5kg Luoyang Jianlong micro-nano molecular sieve, 1kg magnesium oxide chemical defoamer, 2kg Deqian Chemical 5500 Defoamer, 100kg Suzhou Lida superfine LD600 ground calcium carbonate, 190kg Hunan Jinjian B-type nano calcium carbonate, 10kg gypsum whiskers researched and produced by China University of Mining and Technology.

[0066] Preparation of polyurethane prepolymer, its raw material...

Embodiment 3

[0073] This example provides a kind of quick-drying type solvent-free anti-sagging polyurethane waterproof coating, and its raw material comprises the Incozol LV oxazolidine of the plasticizer chlorinated paraffin cp52 of 400kg polyurethane prepolymer, 150kg Danyang auxiliary agent factory, 50kg British ICL company Reactive diluent, 1kg Deqian Chemical 5500 defoamer, 1kg BYK 066N, 3kg f108 Hangzhou Linan additive, 0.4kg Pentamethyldipropylenetriamine from American Air Chemicals, 0.1kg Japan Tosoh Tetramethylethylenediamine, 0.1kg 1,8-diazacyclo[5,4,0]undecene from Shanghai Kaisai Chemical Co., Ltd., 2kg Luoyang Jianlong micro-nano molecular sieve, 3kg magnesium oxide chemical defoamer, 200kg Suzhou Lida ultrafine LD600 ground calcium carbonate, 200kg Hunan Jinjian B-type nano calcium carbonate, 5kg gypsum whiskers produced by China University of Mining and Technology, and 5kg Deshan hydrophobically modified fumed silica PM20L.

[0074] Preparation of polyurethane prepolymer, i...

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Abstract

The invention discloses quick-dry solvent-free anti-sagging polyurethane water-proof paint. Raw materials of the quick-dry solvent-free anti-sagging polyurethane water-proof paint include polyurethaneprepolymer, a plasticizer, a dispersion agent, filler, a dehydrating agent, a catalyst, a defoaming agent and an oxazolidine reactive diluent, wherein the catalyst is prepared from pentamethyldipropylenetriamine, tetramethylethylenediamine and 1,8-diazabicyclo(5.4.0)undec-7-ene; raw materials of the polyurethane prepolymer include polyether diol, polyether triol, isocyanate and a chain extender,and the polyurethane prepolymer is prepared from a method which comprises the following steps that 1, the raw materials of the polyurethane prepolymer are weighed, and the polyether diol and the isocyanate are subjected to reaction until the reaction is completed; 2, then the polyether triol is added for reaction until the reaction is completed; 3, then the chain extender is added for reaction toprepare the polyurethane prepolymer. A preparation method of the water-proof paint comprises the following steps that 1, the polyurethane prepolymer. Is prepared; 2, the prepared polyurethane prepolymer and the residual raw materials of the water-proof paint are mixed to obtain the water-proof paint. The quick-dry solvent-free anti-sagging polyurethane water-proof paint has the advantages of excellent film-forming speed, anti-sagging performance, low viscosity and the like at the same time.

Description

technical field [0001] The invention belongs to the field of building waterproofing, in particular to a quick-drying solvent-free anti-sagging polyurethane waterproof coating and a preparation method thereof, especially suitable for construction in special environments such as rainy days, facades and slopes. Background technique [0002] Polyurethane waterproof coatings are prepolymers containing isocyanate groups formed by addition polymerization of isocyanate and polyether, together with catalysts, anhydrous additives, anhydrous fillers, etc., and processed through mixing and other processes. At present, conventional polyurethane coatings are all non-environmental-friendly coatings containing solvents (because conventional polyurethane prepolymers have high viscosity, manufacturers must add fillers in order to reduce costs, resulting in higher viscosity of the coating itself, and it is difficult to apply without solvents. ), but the introduction of the solvent, the solvent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/61C09D7/63C09D7/65C09D7/20C08G18/66C08G18/48C08G18/32
CPCC09D7/63C09D7/65C09D175/08C08G18/3234C08G18/4812C08G18/4825C08G18/4829C08G18/6685C09D7/20C09D7/61C08K2003/265C08K2003/282C08K2003/2241C08K2003/387C08K2003/385C08K2201/011C08L83/04C08L91/06C08K13/02C08K3/22C08K3/26C08K3/346C08K3/34C08K3/36C08K3/28C08K3/38C08K5/12C08K5/11C08K5/521C08G18/1808C08G18/12C08G18/2063C08G18/4808C08G18/7671C08G18/5024C08G18/7621C08G18/7607C08G18/758C08G18/755C08K5/17C08G18/48C08G18/3296C08G18/50C08K3/30C08G18/10
Inventor 贺小钢李忠人赵祖兵
Owner JIANGSU CANLON BUILDING MATERIALS
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