Advanced Performances of Waterborne 2K Polyurethane Coatings with 2nd Generation Hydroxyl Acrylic Dispersion 第二代高性能羟基丙烯酸树脂水性双组分涂料的优越表现 Introduction 介绍 • Solventborne 2 component polyurethanes ( 2K PU) have for many years been commonly used for high performance coatings which cure at room temp. 2K PU is used for many applications including protective coatings, car refinish coatings, plastic coatings, wood coatings and architectural coatings. However, due to the concerns linked to their high volatile organic compounds (VOC) contents, waterborne alternatives with comparable performances and application windows are needed. 长久以来，溶剂型PU在汽车，塑胶，木器和建筑涂料中应用广泛。而近期由于 VOC因素，水性双组分PU (2K PU) 将取代溶剂型双组分PU Introduction 介绍 • • Allnex developed a series of hydroxyl-functional polyacrylic secondary dispersions with very good stability and compatibility. The dispersion can be hand mixed with a wide range of solvent free and hydrophilized polyisocyanates . This overcomes issue of inconsistent quality due to the fact that mechanical mixing is not always available during application. 湛新研发了一系列具有优异稳定性和兼容性的第二代水性羟基丙烯酸树脂，它可以与大部分水性异氰酸酯混合，（这点在这个应用领域不常见。）克服了应用时不能总是机械搅拌引起的质量不稳定。 Most importantly, the dispersions demonstrated very good reactivity with polyisocyanates. The coatings demonstrate comparable performance to the solvent borne 2K systems. 最重要的，分散体的交联密度高，涂膜性能可与溶剂型双组分PU媲美。 Product Range 产品范围 Key properties and areas of applications 主要性能和应用领域 MACRYNAL™ VSM 2521w VSM 6299w SM 6810w SM 6817w Form of supply 42%WAB 42%WA 42%WA 44%WA OH content (solids) Properties and areas of application 4,2% High hardness, quick drying, high chem. resistance, for wood coatings and as combinational resin 硬度高，快干，耐化学品性能佳，可复配 4,1% Application properties in-betweenVSM 2521w and SM 6810w, well balanced overall properties 性能处于VSM 2521W 和SM 6810W之间 4,1% High blisterfree film thickness, longer tackfree time and slower drying than VSM 6299w, high gloss applications 厚膜无针孔，高光泽 3,0% Quick drying, for general industrial applications, low isocyanate demand 快干，异氰酸酯用量少 Morphology of Hydroxyl Functional Acrylic Dispersion 羟基丙烯酸分散体的形态 OH Surfactant Resin particle OH Hydrophilic Structure OH Primary hydroxyl functional acrylic dispersionExternally emulsified 外乳化第一代分散体 Low molecular surfactants 低分子量表面活性剂 OH OH MACRYNAL Secondary hydroxyl functional acrylic dispersion (internally emulsified) 第二代分散体（内乳化） High molecular emulsifying component 高分子量乳化剂 Comparison Self vs Externally Emulsified 一级分散体与二级分散体对比 Emulsification 乳化形式 Mw Manufacturing 生产 Susceptible to external influences 稳定性 Particle size 粒径 MFFT 最低成膜温度 Storage stability 储存稳定性 Shelf life 保质期 Shear stability 剪切稳定性 Direct pigmentation 可否直接添加颜填料 Primary Externally emulsified 外乳化 > 100 k Easy 简单 Secondary Self emulsified 自乳化 < 100 k Complex 复杂 Not stable 不稳定 + low - high MFFT 低-高 Stable 稳定 ++ (80 - 120 nm) near 0˚C 接近0度 + Poor 差 Poor 差 ++ Very good 非常好 Good 好 Not possible 不可以 Possible 可以 Compatibility 兼容性 • MACRYNAL shows good compatibility with various polyisocyanates and partner resins. MACRYNAL 可以和无溶剂或水性异氰酸酯手搅混合 • It can be hand mixed with solvent free and hydrophilized isocyanates without need to pre-dilute the isocyanates with solvents. 可以与无溶剂或者水性异氰酸酯手工搅拌，不用预先稀释异氰酸酯  This overcome issue of inconsistence quality due to the fact that mechanical mixing is not always available during application. 手搅形式在市面上不常见  Reduces VOC 低VOC  Pot life of 4 hours can be achieved with proper matching of resins, polyisocyanaytes and formulations. 配方得当的话，活化期为4hr MACRYNAL Pot life Self-emulsified HDI IPDI Modified HDI VSM 6299w 4 hour > 4 hour SM 6810w 3 hour 4 hour SM 6817w 3 hour > 2 hour VSM 2521w 2 hour 2 hour Gloss Level 光泽 • Good compatibility with various hydrophilized polyisocyanates and partner resins allowed formulating of full gloss systems. 与水性异氰酸酯兼容性好是高光产品的前提。 • Can be hand mixed with hydrophilized polyisocyanates without need to pre-dilute the polyisocyanates with solvents. 手搅，无须预稀释 MACRYNAL Gloss level (7 day) Self-emulsified HDI 20˚/ 60˚ IPDI Modified HDI 20˚/ 60˚ VSM 6299w 34 / 92 66 / 88 SM 6810w 44 / 90 63 / 87 SM 6817w 29 / 72 67 / 90 VSM 2521w 18 / 59 62 / 91 Gloss Level 光泽 • With conventional 100% active solventborne polyisocyanates, MACRYNAL achieved low gloss level or matt finishes with good transparency. 与常规的100％活性溶剂型聚异氰酸酯结合使用, MACRYNAL呈低光泽度，但透明度良好 Florida Weathering 耐候性测试 Gloss retention of white pigmented topcoats 白色面漆的保光性 11 Low Molecular Weight (Mw) 低分子量 • • • • • • • MACRYNAL has relatively low Mw. 较低分子量 Low MFFT. Do not need additional coalescence solvents for film forming. 较低MFFT，无须添加成膜助剂 High OH value  high cross-linking density. 高羟值，高交联密度 High Reactivity. 高活性 Good transparency 透明性好 No external surfactant  good corrosion and water resistance. 无外乳化剂，优异的耐腐蚀和耐水性。 Shear stable and good pigment wetting properties. Allow more formulation flexibility. 良好的剪切稳定性和颜料润湿性。配方灵活。 Reactivity 反应活性 MACRYNAL has smaller particle size  higher surface area粒径更小 Higher cross-linking density. 更高交联密度 Better film integration and film formation. 成膜性能佳 Performances 性能 White topcoats based on MACRYNAL + externally emulsified polyisocyanate 白色面漆+外乳化型异氰酸酯 (OH:NCO 1:1,4) MACRYNAL SM 6817w VSM 2521w VSM 6299w SM 6810w 3,0% 4,2% 4,1% 4,1% Pendulum hardness (RT after 24h/7d) 26“ / 37“ 54“ / 62“ 44“ / 50“ 36“ / 78“ Pendulum hardness (45min 60°C - 24h7d) 58“ / 71“ 117“ / 121“ 92“ / 94“ 65“ / 106“ Blisterfree film thickness 69µm 35µm 65µm 87µm Tackfree time 3 hrs. 3 hrs. 6 hrs. 8 hrs. Acetone resistance (7d) < 30s 1 min 30s 1 min Xylene resistance (7d) 5 min > 10 min 9 min > 10 min 175 g/l 190 g/l 190 g/l 185 g/l OH content (on solid) VOC Blister Free Dry Film Thickness 施工无微泡干膜厚度 90 SM 6810w Blisterfree dry film 80 thickness (µm) 70 SM 6817w VSM 6299w 无微泡干膜厚度 60 (µm) 50 40 VSM 2521w 30 1.0 2.0 3.0 4.0 OH content on solid binder (%) 5.0 Drying Properties 干燥性能 Tackfree time at room temperature 室温指触干 White topcoats based on MACRYNAL + Externally emulsified polyisocyanate (OH:NCO 1:1,4) 50 Tack strength (N𝐜𝐜𝐜𝐜−𝟐𝟐 ) 40 SM 6817w VSM 2521w VSM 6299w SM 6810w 30 20 10 1 2 3 4 Time [hours] 5 6 7 8 Hardness 硬度 Development of hardness after 45 min at 60 °C 在60C干燥45min后的硬度 White topcoats based on MACRYNAL + hydrophilic HDI-trimer (OH:NCO 1:1,4) 白色面漆+ 亲水性 HDI 三聚体 Pendulum hardness (König) [s] 140 120 100 80 after 1d 60 after 7d 40 20 0 SM 6817w VSM 2521w VSM 6299w SM 6810w Pencil hardness 铅笔硬度 Development of hardness at room temperature (7 day) High gloss clear coat based on MACRYNAL + hydrophilic HDI-trimer (OH:NCO 1:1,4) 高光清漆+ 亲水性 HDI 三聚体 7天室温下干燥 MACRYNAL Pencil hardness VSM 6299w SM 6810w SM 6817w VSM 2521w Self-emulsified HDI dented 划坑/ rupture划破 B / HB 3B / 2B HB / H 2B / B IPDI Modified HDI dented/ rupture HB / 2H B / 2H H / 2H B / HB Hardness Development 硬度发展 Hardness development after 45 min at 60 °C Waterborne clearcoats based on MACRYNAL + Mix of hydrophilic HDI-Trimer/IPDI-Trimer 水性清面漆+ 亲水性HDI三聚体/IPDI-三聚体 (NCO/OH=1,4) 19 Chemical Resistance 耐化学品性 MACRYNAL Chemical resistance VSM 6299w SM 6810w SM 6817w VSM 2521w MEK, 1kg double rub* Ethanol, 1kg double rub* Coffee Red wine MEK, 1kg double rub Ethanol, 1kg double rub Coffee Red wine MEK, 1kg double rub Ethanol, 1kg double rub Coffee Red wine MEK, 1kg double rub Ethanol, 1kg double rub Tea Red wine Self-emulsified HDI 1 day / 7 day 36 strokes 74 strokes 5/5 5/5 36 strokes 24 strokes 5/5 3/4 50 strokes 96 strokes 5/5 5/5 21 strokes 67 strokes 5/5 5/5 IPDI Modified HDI 1 day / 7 day 75 strokes 92 strokes 5/5 5/5 62 strokes 88 strokes 5/5 5/5 78 strokes 86 strokes 5/5 5/5 80 strokes 83 strokes 5/5 4/5 *1kg double rub - tested on day 7; tested until film begin to showed rupture lines All sample achieved 5 / 5 for water, ethanol and tea drop tests Chemical resistance 5 = no defect 4 = visible from certain angle 3 = visible color change 2 = visible film damage 1 = film was gone Block Resistance 抗粘连性 MACRYNAL Self-emulsified HDI IPDI Modified HDI Block resistance at 90˚C 1 day / 7 day 1 day / 7 day VSM 6299w 5/5 4/5 SM 6810w 5/5 5/5 SM 6817w 5/5 4/5 VSM 2521w 5/5 4/5 * All 5 for block resistance at 50˚C and room temperature Block resistance 5 = no block 4 = slightly block, film no damage 3 = <10% film damage 2 = >10% film damage 1 = Completely blocked 50C时抗粘连性都很优异 Conclusions 结论 By utilizing MACRYNAL, the novel hydroxylated acrylic dispersions together with the correct selection of a matching hydrophilized polyisocyanates and proper formulation techniques, it’s possible to formulate high performance waterborne 2K PU with wide applications window and properties equal to solventborne 2K PU. 通过选择合适的水性异氰酸和配方，可以得到高性能水性双组分PU，其性能可与溶剂型双组分PU媲美。 Conclusions 结论 MACRYNAL demonstrates: MACRYNAL系列性能特点 •High gloss, good transparency despite being hand mixed. 高光泽，高透明度和可手搅 •Excellent compatibility with polyisocyanates. 与异氰酸酯兼容性佳 •Excellent chemicals resistances 优异的耐溶剂性 •Excellent block resistance 优异的抗粘连性 •Good drying and hardness development 快干，硬度发展快 •Good weathering resistance 良好的耐候性 •Good pot life 良好的施工时间 www.allnex.com Tech Service & Dev 技术 Angelia Dong 董玉婷 Shanghai Tel.: +86-21-64048011 [email protected] Sales Manager 销售经理 Kevin Xu 徐立文 Shanghai Tel.: +86-21-64048011 [email protected] Sales Manager 销售经理 Peter Deng 邓存良 Guangzhou Mobile: +86-139 2406 8383 [email protected] Technical Authors: Gottfried Fuerpass, Angelia Dong & Chua Guan Hoe Notice: Trademarks indicated with the ®, ™ or * are registered, unregistered or pending trademarks of Allnex Belgium SA or its directly or indirectly affiliated Allnex Group companies. 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