短油度水分散性醇酸树脂的合成工艺研究

采用熔融酯化成盐法合成短油度水分散性醇酸树脂,通过考察使用不同的脂肪酸,中和剂三乙胺加入量及顺丁烯二甲酸酐的加入量等因素得出短油度水性醇酸树脂的优化配方.实验结果表明,油度为40%,醇超量r为25%的醇酸树脂,采用三乙胺做中和剂,其加入量为计算量的110%,用顺丁烯二甲酸酐改性树脂主链,顺丁烯二甲酸酐在二元酸中的比例为4%～6%时的树脂综合性能较好.     

新型水性醇酸 /丙烯酸复合分散体漆膜耐水性影响因素研究

以中长油度醇酸树脂、丙烯酸（酯）类单体等为主要原料,以过氧化苯甲酰为引发剂,通过先溶液聚合再高速乳化工艺,合成了具有核壳结构的新型水性醇酸 /丙烯酸复合分散体,并对其漆膜耐水性影响因素进行了研究。重点考察了醇酸树脂油度、醇酸树脂与丙烯酸酯单体比例、丙烯酸酯硬单体的比例、丙烯酸及丙烯酸十八酯用量对分散体粒径及漆膜耐水性的影响。结果表明：醇酸树脂油度为 57. 5%,醇酸树脂与丙烯酸酯类单体质量比为 6. 3∶3. 7,丙烯酸酯硬单体 MMA和 St质量比在 8∶2至 6. 5∶3. 5之间,丙烯酸用量在 3. 22%~7. 70%之间,丙烯酸十八酯用量 3. 03%时,复合分散体漆膜耐水性及综合性能较优。     

月桂酸在短油醇酸树脂中的应用

十二烷酸通称月桂酸，为有机一元酸，可制备改性短油醇酸树脂，用其合成的短油醇酸树脂与低醚化度氨基树脂按一定的比例混拼制成的烘干清漆、色漆性能优良。本文介绍了由月桂酸合成短油醇酸树脂的方法以及在烘干清漆、色漆中的应用。     

基于生物材料的水性自干型醇酸树脂的合成、性能研究与应用

用桐油、大豆油为主要原料,通过醇解法合成了水性醇酸树脂,研究了不同的桐油/大豆油比例对醇酸树脂以及涂料性能的影响。结果表明,相比于大豆油,引入适量的桐油能够明显提高涂料的气干性和初期耐水性。同时还研究了不同的油度、醇过量以及终点酸值对醇酸树脂和涂料性能的影响。在此基础上,得到了具有优秀气干性和耐水性的水性醇酸树脂,并将其作为轻防腐涂料应用到了钢材表面。     

环氧改性水性醇酸树脂的制备

首先以亚麻酸、环氧树脂为原料制备环氧酯,再将环氧酯作为多元醇与亚麻酸、三羟甲基丙烷、苯酐、偏酐等进行酯化反应,经胺中和后得到一种环氧改性水性醇酸树脂,采用红外光谱对产物结构进行了表征并对其粒径分布作了分析,研究表明:醇酸树脂油度50%,终点酸值50～60,选用环氧树脂E-20与亚麻酸、三羟甲基丙烷、苯酐采用溶剂法反应,之后加入偏苯三酸酐采用熔融法反应可以得到干性好、硬度高、稳定性、水分散性和耐水性优良的环氧改性水性醇酸树脂。     

短油醇酸树脂在洗涤剂中的应用

短油醇酸树脂是一种高分子表面活性剂,已经成功地应用于洗衣粉和液体洗涤剂中。短油醇酸树脂与LAS、α—A0S按50：50的比例复配显示协同性,短油醇酸树脂与SLS、AES复配可很好地用于液体洗涤剂的配制。松香是制造短油醇酸树脂的主要原料,其它的原料分别为大豆油、马来酸酐和甘油,由于松香来源丰富,其它的原料易得,因此,短油醇酸树脂是一种有前途的新型表面活性剂,更适合环境友好洗涤剂的制造。     

利用油脚油酸生产醇酸树酯及其清漆和磁漆

利用油脚油酸为主要原料,加入适量自制的分子结构改性剂,采用脂肪法合成醇酸树脂并以此树脂生产了醇酸清漆和磁漆。     

自交联水性聚氨酯油的研究

以异佛尔酮二异氰酸酯、聚酯多元醇、醇酸树脂、二羟甲基丁酸等为原料,通过采用合适化学方法引入自交联单体及部分中、长油度醇酸树脂进行改性,合成了自交联水性聚氨酯油．本文在聚氨酯链段上引入了自交联单体及部分中、长油度醇酸树脂、有机硅氧烷,对得到的产物进行了表征及性能对比,制得了具有优良成膜性能、耐水性及力学性能的自交联水性聚氨酯油（OMU）．     

利用油脚油酸生产醇酸树脂及其清漆和磁漆

利用油脚油酸为主要原料，加入适量自制的分子结构改性剂，采用脂肪法合成醇酸树脂，并以此树脂生产了醇酸清漆和磁漆。     

双组分丙烯酸聚氨酯光油的制备

采用羟基丙烯酸树脂和高固含量、高羟值的合成脂肪酸醇酸树脂制备双组分丙烯酸聚氨酯光油,研究了树脂、助剂和溶剂等因素及光油与固化剂配比对光油性能的影响.结果表明,当羟基丙烯酸树脂和合成脂肪酸醇酸树脂比例为74:16,金属锡催干剂加入量为0.05%,采用丙烯酸类流平剂和非硅的树脂类消泡剂,选择恰当溶剂,光油与固化剂配比为4:1时,光油的综合性能优良.     

Development of PU Coatings from Neem Oil Based Alkyds Prepared by the Monoglyceride Route

This work deals with the preparation of alkyd resins from neem oil and their utilization in preparation of polyurethane coatings. Alkyd resins were synthesized by reaction of neem oil monoglycerides with four different divalent acids like phthalic anhydride, maleic anhydride, itaconic acid, and dimer fatty acid. The alkyds formation was studied by determining the acid number of the reaction mixture at regular intervals of time and the extents of the polyesterification reactions were calculated during the formation of alkyds. The structures of synthesized alkyds were confirmed by FT‐IR and ¹H‐NMR spectroscopic analysis and also by end group analysis such as hydroxyl and acid values. The synthesized alkyds were reacted with TDI to prepare PU coatings and their performance was compared with PU coatings prepared from a commercial alkyd.     

Monomer and amino resin modified tall oil fatty acid alkyds

Summary Monomer modified tall oil fatty acid trimethylolethane medium type of phthalic alkyds made by the High Polymer Alkyd Technique show improved properties in dry time, mar resistance, and flexibility as compared with monomer modified conventional prepared systems. Greater hardness, less color degradation, greater resistance to extended periods at high temperature, and alkali and detergent resistances result from the urea and melamine resin modifications of tall oil fatty acid High Polymer alkyds than is obtained with similarly modified conventional alkyds.     

紫胶和顺丁烯二酸酐改性水性醇酸树脂合成的影响因素

以紫胶、蓖麻油、顺丁烯二酸酐、三羟甲基丙烷、偏苯三酸酐为原料,采用熔融法合成了水性醇酸树脂。研究了紫胶用量、蓖麻油酸加量、脂肪酸类型、多元醇类型和酯化时间对树脂性能的影响,确定了最佳的工艺参数。所得醇酸树脂产品的贮存稳定性、耐水性、耐冲击性、硬度、柔韧性等综合性能良好。     

Factors influencing the stability and film properties of acrylic/alkyd water-reducible hybrid systems using a response surface technique

Acrylic-grafted-alkyd resins were prepared by free radical chemistry. Long, medium, and short oil alkyds were prepared using soybean oil, glycerol, phthalic anhydride (PA), and tetrahydrophthalic anhydride (THPA) and used as the alkyd phase. Acrylic co-monomer formulas containing methyl methacrylate (MMA), butyl acrylate (BA), methacrylic acid (MAA), and vinyl trimethoxysilane (VTMS) were polymerized in the presence of the different alkyds using 2,2′-azobisisobutyronitrile (AIBN) as the initiator to obtain the final grafted structures. Design of experiments was used to understand how different variables in the synthesis of the acrylated-alkyds affect the film performance. A Box–Behnkin design was used, varying the oil length of the alkyd phase, the degree of unsaturation in the polyester backbone, and acrylic to alkyd ratio. Acrylic–alkyd hybrid resins were reduced with an amine/water mixture. The hydrolytic stability of hybrid alkyd dispersed in water was evaluated. Cured films were prepared and basic coatings properties were also evaluated. It was found that the oil length of the alkyd is the most dominant factor for final coatings properties of the resins. The hydrolytic stability was dependent on the acrylic to alkyd ratio. The oil length of the alkyd backbone had a minimal effect on stability of the resin and film performance.     

化学修饰树脂吸附邻苯二甲酸行为研究——一个物理化学研究型综合实验

介绍了一个研究型综合实验-化学修饰树脂吸附邻苯二甲酸行为研究.实验使用后交联及化学修饰反应制备了偏苯三酸酐修饰树脂,并通过等温吸附和吸附动力学实验研究其对邻苯二甲酸的吸附行为.该实验涵盖了物理化学中热力学、动力学以及界面现象等相关章节的知识,有利于开拓学生视野,提高学生创新能力与科学研究能力.     

Investigation of grafting sites of acrylic monomers onto alkyd resins via gHMQC two-dimensional NMR: Part 1

Acrylic monomers were grafted onto alkyds via free radical chemistry. The alkyd was a medium oil soya-based alkyd with glycerol, phthalic anhydride, and tetrahydrophthalic anhydride (THPA) as the other components. To identify the specific graft locations, 1D and 2D NMR spectroscopy techniques were utilized. Gradient heteronuclear multiple quantum coherence (gHMQC) 2D NMR was required to assign the chemical shifts of the 1D carbon and proton NMR spectra. Three acrylic monomers, methyl methacrylate (MMA), butyl acrylate (BA), and methacrylic acid (MAA) were grafted to the alkyd, resulting in either MMA, BA, or MAA modified alkyds. Two-dimensional gHMQC spectra for each system confirm grafting at doubly allylic hydrogens located on the fatty acid chains and the polyol segment of the alkyd backbone. The gHMQC spectra show no evidence of grafting across double bonds on either pendant fatty acid groups or THPA unsaturation sites for any of the monomer choices.     

环氧酯底漆的研制

介绍了用环氧树脂、脂肪酸、干性油、季戊四醇、邻苯二甲酸酐制成的气干型环氧酯底漆。讨论了各种因素对树脂、涂料性能的影响。     

水性醇酸树脂的合成及其耐水性的研究

以甘油、亚麻油酸、三羟甲基丙烷、邻苯二甲酸酐,间苯二甲酸及偏苯三酸酐等为原料合成了水性醇酸树脂,通过涂膜性能测试研究了反应温度、反应时间及偏苯三酸酐用量对水性醇酸树脂性能的影响。对比研究了氮丙啶型、硅氧烷型及多碳二亚胺型3种室温固化交联剂对水性醇酸树脂涂膜性能的影响。结果表明:水性化阶段偏苯三酸酐用量为10%,反应时间为1.5 h,反应温度为170 ℃时树脂性能较优。耐水性研究表明:加入硅氧烷型交联剂A后涂膜的耐水性最优,吸水率最低,当用量为6%时,清漆涂膜的硬度、光泽、附着力、耐水性、耐溶剂性均达到预期效果。加入辛酸亚锡后,涂膜在低温高湿环境下,干燥性及耐水性均得到明显改善。     

The use of aminolysis,aminoglycolysis, and simultaneous aminolysis–hydrolysis products of waste PET for production of paint binder

This work is concerned with the use of aminolysis, aminoglycolysis, and simultaneous aminolysis–hydrolysis products of waste PET for production of paint binder based on alkyd resin. For this purpose, first, aminolysis, aminoglycolysis, and simultaneous hydrolysis–aminolysis reactions of waste PET were carried out in the presence of different chemical agents in xylene medium at high pressures. Reactions of waste PET flakes obtained from grinding postconsumer water bottles were carried out in an autoclave at higher temperatures. Then, four alkyd resins, formulated to have oil content 40–50%, were prepared using these depolymerization products. One of resins is “reference alkyd resin” which was prepared by using soybean oil fatty acid, phthalic anhydride, glycerine, and ethylene glycol for comparison. Other three alkyds are “depolymerization product‐based alkyd resins” in which depolymerization products is used instead of ethylene glycol. Then, the physical and chemical surface coating properties and thermal behaviors of alkyd resins films were investigated comparatively. As a result, we concluded that aminolysis, aminoglycolysis, and simultaneous aminolysis‐hydrolysis products of waste PET are suitable for manufacturing both air drying and oven curing paint binder based on alkyd resins. The film prepared from alkyd resin based on simultaneous aminolysis‐hydrolysis product showed extremely good surface coating properties and thermal stability. POLYM. ENG. SCI., 54:2272–2281, 2014. © 2013 Society of Plastics Engineers