热固性树脂的制备工艺

本发明涉及了以热固性树脂作为基料的电泳漆。本发明叙述了采用水溶性或水分散性树脂A(每千克树脂A含有0．2～1mol的氢氧化季铵基团)，来控制质子化的热固性树脂B(带有叔氨基，分散在水性电泳槽中)在阴极电泳期间水性电泳槽的pH值。     

室温固化水性聚氨酯树脂的耐水性研究

以甲苯二异氰酸酯(TDI)、聚醚多元醇(PTMG)为主要原料,二羟甲基丙酸(DMPA)为亲水单体,采用三羟甲基丙烷脱水蓖麻油酸酯(TMPDCO)进行改性,通过逐步聚合反应制备了一系列室温固化水性聚氨酯树脂。研究了TMPDCO的含量、亲水基团含量、软段多元醇种类与相对分子质量、封端剂以及氮丙啶交联剂等对聚氨酯涂膜耐水性的影响,从而确定了最佳合成配方,获得了优良耐水性能的水性聚氨酯树脂。     

水性聚氨酯-聚丙烯酸酯的制备及其在涂料中的应用

以聚酯多元醇(PE-1000)、二羟甲基丙酸(DMPA)、异氰酸酯(NCO)、功能基团和多种丙烯酸类单体为原料,经过多步反应制得水性聚氨酯–聚丙烯酸酯树脂。通过优化配方及性能测试,确定了最佳制备方案。经研究表明,该树脂在水性金属闪光漆中表现优秀,使涂膜能够获得较好的综合性能。     

水性聚合物的有关概念与基本特征

水性聚合物体系是一种胶体体系.根据胶体科学的基本概念,对水件聚合物体系,包括乳液、微乳液、纳米乳液、乳胶、水分散体、水溶胶、水溶性树脂(聚合物)、水稀释树脂(聚合物)等进行了讨论,分析了不同类型水性聚合物体系各自的典型特征,指出了它们的不同与相似之处.在此基础上,结合目前涂料行业的习惯及结合水性聚合物的性能特征(如可溶解的极性基团的含量、聚合物相对分子质量、聚合物链上亲水/疏水基团比等),对水性聚合物的类别进行了讨论.     

水性丙烯酸树脂的制备及其水溶性研究

以甲基丙烯酸甲酯、丙烯酸丁酯为主要单体,以过氧化苯甲酰为引发剂,通过引入亲水性基团羧基和羟基,制备了水性丙烯酸树脂。讨论了亲水单体含量、中和度等对丙烯酸树脂水溶性的影响。     

高固含量磺酸/羧酸盐复合型水性聚氨酯木器涂料的制备研究

合成了含有磺酸盐基团的端—OH聚酯多元醇;以羧酸盐、磺酸盐亲水基团进行复配,并于树脂软硬段同时引入磺酸盐基团,结合复合扩链的方式制备了高固含量水性聚氨酯木器涂料;系统研究了聚酯相对分子质量大小、n(NCO)/n(OH)值以及DMPA、磺酸盐基团用量等对分散体状态以及涂膜性能的影响;制备的水性木器涂料固含量达到了50%以上,涂膜各项性能均能达到GB/T 23999—2009《室内装饰装修用水性木器涂料》指标要求。     

导读

正宋欢欢等人合成了含有磺酸盐基团的端羟基聚酯多元醇;以羧酸盐、磺酸盐进行复配,在树脂软硬段同时引入磺酸盐基团,结合复合扩链的方式制备了高固含量水性聚氨酯木器涂料;系统研究了聚酯相对分子质量、n(NCO)/n(OH)以及DMPA、磺酸盐基团用量等对分散体状态以及涂膜性能的影响;制备的水性木器涂料固含量达到50%以上,涂膜各项性能均能达到GB/T 23999-2009《室内装饰装修用水性木器涂     

丙烯酸酯改性水性醇酸树脂的制备及表征

以三羟甲基丙烷、邻苯二甲酸酐及亚麻油脂肪酸为主要原料生成所需的醇酸树脂,并加入偏苯三酸酐将其水性化得到具有水溶性的醇酸树脂,运用接枝共聚的方法进行改性得到丙烯酸酯改性的水性醇酸树脂。通过涂膜性能测试研究了引发剂种类、水性醇酸树脂与丙烯酸酯的比例、玻璃化温度对改性树脂性能的影响。采用激光粒度分布仪测定了产物的平均粒径分布及稳定性,红外光谱研究了产物的基团结构,运用核磁对丙烯酸酯接枝位置进行了分析,通过透射电镜(TEM)表征树脂的微观状态。结果表明,当引发剂为偶氮二异丁腈时,水性醇酸树脂与丙烯酸酯的比例为3∶1,玻璃化温度为87.5℃时性能较优。     

环氧树脂用KH550开环改性水性聚氨酯涂料的合成及性能研究

由于环氧树脂中环氧基团的存在,在合成环氧树脂改性水性聚氨酯预聚体和后扩链过程中,会消耗部分—NCO、胺类扩链剂,对整个合成的配方设计造成影响,重现性也差。通过KH550中的伯胺先打开环氧基团,然后改性的水性聚氨酯作为大分子扩链剂接到水性聚氨酯预聚体中,成功制备了稳定的水性聚氨酯乳液。通过傅里叶变换红外光谱和接触角测量仪对树脂的结构进行了表征。研究结果表明:KH550成功打开了环氧基团,并且树脂接上了有机硅类功能性材料,使得合成的树脂接触角大大提高。     

水性涂料

<正>201701008一种水性树脂组合物及其具有高硬度和良好耐溶剂性能的涂料及涂膜的制备:JP2016 69 391[日本专利公开]/日本:DIC Corporation(Miyake,Junichi等).-2016.05.09.-20页.-2014/196 663(2014.09.26)题述水性树脂组合物由(A)聚氨酯树脂、(B)交联剂和(C)水性介质组成。所述(A)聚氨酯树脂由多异氰酸酯与多元醇反应制得;所述多元醇中含有结构式为HOR0-OH且具有至少两个可聚合不饱和基团的亚烷基二     

聚酯丙烯酸杂化多元醇水分散体的制备

以间苯二甲酸-5-磺酸钠(5-SSIPA)与新戊二醇缩聚,制备亲水性中间体.用该中间体与羟基丙烯酸树脂、新戊二醇、三羟甲基丙烷和己二酸进一步缩聚,制得聚酯丙烯酸杂化树脂,加水分散后得其水分散体.研究了反应温度、羟基丙烯酸树脂的玻璃化温度及含量对杂化多元醇水分散体及其相应涂膜性能的影响.结果发现,适宜的杂化反应温度为22...     

聚氨酯-聚醚-丙烯酸酯型亲水铝箔涂料的制备研究

介绍了一种聚氨酯-聚醚-丙烯酸酯型亲水铝箔涂料的制备方法,研究了引发剂的选择和用量对转化率的影响,考察了内交联剂以及聚氨酯-聚醚树脂与丙烯酸树脂的配比对涂料性能的影响。实验结果表明,在聚氨酯-聚醚树脂的制备中,用硝酸铈铵作引发剂,用二乙烯苯作内交联剂,在丙烯酸树脂的制备中,引发剂量为单体总质量的1.00%,聚氨酯-聚醚树脂与丙烯酸树脂的质量比为15∶1,制备的树脂转化率高,涂料亲水性能优异。     

自抛光船舶漆丙烯酸树脂研究

介绍了一种含有羟基丙烯酸树脂的研制方法,讨论了各种单体配比、引发剂、溶剂、聚合温度、时间等因素对性能的影响。研制出一种微溶于水又具亲水体积膨胀的丙烯酸树脂共聚物。配制成船舶防污漆,提高防污及船舶航速的目的。     

Novel ambient temperature curable two-component waterborne silicone-acrylic coatings

Waterborne coatings are composed of resins containing hydrophilic functional groups. These groups usually remain in the coating film and can adversely affect film properties such as weatherability and resistance to water and alkali. We have developed a novel ambient temperature curable waterborne two-component system, in which the hydrophilic functional groups are consumed by the crosslinking reaction. The new coating system consists of a waterborne acrylic resin containing both tert-amino and carboxylic acid groups and a hardener containing both epoxy and alkoxysilyl groups. The waterborne silicone acrylic coatings provide superior film properties even if the acrylic resin has relatively low functional group content. In this paper we describe the crosslinking reaction mechanism and film properties using some acrylic resin types and paint formulations as examples. Presented at the 24th Annual Waterborne, High-Solids, and Powder Coatings Symposium, on February 5–7, 1997, in New Orleans, LA. 1-3 Takasago, Takaishi-shi, Osaka, Japan.     

改性咪唑类潜伏性环氧树脂固化剂的制备

由丙烯酸、甲基丙烯酸甲酯、丙烯酸丁酯等的共聚反应制备了有一定亲水性的丙烯酸树脂，然后利用制备的丙烯酸树脂对咪唑和2-乙基-4-甲基咪唑进行改性制备具有一定潜伏性的环氧树脂固化剂，该固化剂可以和环氧乳液进行复配，具有较好的相容性，可制备出单组分丙烯酸树脂环氧树脂铝箔涂覆材料，该材料涂覆于铝箔表面，可获得光滑致密耐腐蚀的涂膜。     

Preparation and Characterization of Two-component Waterborne Poly-urethane Comprised of Water-soluble Acrylic Resin and HDI Biuret

A two-component waterborne polyurethane （2K-WPU） was prepared by mixing water-soluble acrylic resin and hexamethylene diisocyanate biuret, and then diluted for phase inversion with water. Compared with water-soluble acrylic resin, the phase inversion of 2K-WPU occurs at lower water content. It is indicated by TEM that 2K-WPU particles show a core-shell structure, in which HDI biuret is encapsulated by hydrophilic acrylic resin. 2K-WPU emulsion with HDI biuret has larger particle size and narrower distribution index, while for 2K-WPU emulsion with HDI isocyanurate, the latex not only has large particle size, but also has two-peak distribution. FTIR shows that the reaction between HDI biuret and acrylic resin can complete in 12h. In addition, studies on effect of composition of acrylic resin on performance of 2K-WPU show that narrowing the polar difference between water-soluble acrylic resin and HDI biuret and improving the miscibility of two components are the key to prepare the transparent and high gloss films with high crosslinking density.     

自乳化水性丙烯酸改性聚酯树脂的制备

以椰子油、甘油、新戊二醇、间苯二甲酸、富马酸等为原料合成了不饱和聚酯,再与含有亲水单元的丙烯酸混合单体自由基共聚合,制得丙烯酸接枝聚酯,将其中和后水分散即得自乳化水性丙烯酸改性聚酯树脂。讨论了富马酸含量、接枝部分的酸值以及接枝反应温度对水分散体性能的影响。     

Properties of organic–inorganic composite materials prepared from acrylic resin emulsions and colloidal silicas

To design an organic–inorganic composite material with colloidal silica as the inorganic component, an acrylic resin emulsion and an organic silane hybridized acrylic resin emulsion were prepared by emulsion polymerization. The organic–inorganic composite films were prepared by blending the emulsion and the colloidal silica. The contact angles for water, gloss at 60°, and the transparencies of those films were measured. The dispersion state of colloidal silica in films was observed with a scanning electron microscope (SEM) and a transmission electron microscope (TEM). From these results, the contact angle for water of the organic–inorganic composite film obtained from the silane hybridized acrylic resin emulsion was lower than that of the organic–inorganic composite film obtained from an acrylic resin emulsion. The contact angles for water in organic–inorganic composite films with colloidal silicas were lower than those of the films without the colloidal silicas. The films prepared from silane hybridized acrylic resin emulsion composites with colloidal silicas of less than 100 nm were more hydrophilic. SEM and TEM observations demonstrated that some aggregations of the small colloidal particle silica were densely dispersed on the film surface. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2051–2056, 2006     

丙烯酸改性聚酯水分散体纺织涂层的制备

采用新戊二醇、二甘醇、邻苯二甲酸酐、顺丁烯二酸酐等为原料合成了主链上含有双键的聚酯,然后采用含一定亲水基团的丙烯酸混合单体接枝改性聚酯树脂,提高了聚酯树脂的水溶性和成膜性能.由此制备出一种性能优良的环保型纺织涂层.用红外光谱表征了产物的分子结构.讨论了顺丁烯二酸酐用量及中和剂的选择对水分散体性能的影响.