松香的精细化工利用（V）—松香和松香酯乳液

本讲重点介绍了松香和松香酯在制备水乳液方面的研究及应用情况。     

松香的精细化工利用(Ⅴ)——松香和松香酯乳液

本讲重点介绍了松香和松香酯在制备水乳液方面的研究及应用情况。     

松香酯乳液增粘剂的制备和应用研究

本文通过比较各种乳化剂及乳化方式，确定松香酯乳液制备工艺，并研制松香酯乳液系列产品，已经在丙烯酸酯乳液压敏胶中得到应用。     

松香酯乳液增粘剂的制备和应用研究

本文通过比较各种乳化剂及乳化方式，确定松香酯乳液制备工艺，并研制松香酯乳液系列产品。已经在丙烯酸酯乳液压敏胶中得到应用。     

松香/丙烯酸酯共聚乳液的合成研究

文章先用松香与氯化亚砜反应,得到活泼的松香酰氯,然后与甲基丙烯酸羟乙酯进行酯化反应引入双键,最后通过自由基聚合,得到松香/丙烯酸酯共聚乳液。通过红外光谱、核磁共振氢谱对共聚乳液进行表征与分析,结果表明:经酰氯化的松香与甲基丙烯酸羟乙酯发生了酯化反应,实验成功地合成了松香/丙烯酸酯共聚乳液。     

松香的精细化工利用(Ⅰ)--松香的组成与性质

《松香的精细化工利用》系列讲座将分六部分 :(1)松香的组成与性质 ,(2 )松香在高分子材料中应用 ,(3)松香在油墨涂料中应用 ,(4)松香在表面活性剂中应用 ,(5 )松香和松香酯乳液 ,(6 )松脂成分分析和特殊组分利用。本讲主要介绍松香的来源、用途、化学性质及其改性方法。     

松香的精细化工利用（I）—松香的组成与性质

《松香的精细化工利用》系列讲座将分为六部分：（1）松香的组成与性质；（2）松香在高分子材料中应用；（3）松香在油墨涂料中应用，（4）松香在表面活性剂中应用；（5）松香和松香酯乳液，（6）松脂成分分析和特殊组分利用，本讲主要介绍松香的来源，用途，化学性质及其改性方法。     

造纸用阳离子分散松香胶的制备

对低速常压逆转乳化法制备造纸用阳离子分散松香乳液的条件进行探讨,并对所得的产品性能及施胶效果进行测定。最适宜的乳化条件为:乳化剂用量为松香用量的10%、助乳化剂用量为松香用量的25%,乳化温度为150~160℃、转相温度为100℃;在乳液制备初期搅拌速度为150~200r/min为宜,加入热水后搅拌速度为2000r/min,转相后搅拌速度为100r/min。施胶度(cobb值)为23·45g/m2。     

阳离子无皂苯丙聚合物分散松香胶的制备及应用

采用常压逆转工艺,以甲基丙烯酸-β-3-羟丙酯基三甲基氯化铵(DMHC)为自乳化阳离子单体、苯乙烯(St)为亲油单体、丙烯酰胺(AM)为亲水单体和羟甲基丙烯酰胺(NMAM)为交联剂,经氧化-还原引发共聚,然后加入松香,借助于反应形成的阳离子无皂苯丙乳液作分散乳化剂,制得阳离子苯丙共聚物分散松香胶。结果表明:当pH值为6～6.5、w[助留剂Al2(SO4)3]=0.5%、w[阳离子聚丙烯酰胺(CPAM)]=0.2%和w(阳离子分散松香胶施胶剂)=1.2%(相对于干浆料而言)时,将此阳离子分散松香胶应用于混合浆抄纸体系中,采用逆向施胶,纸张施胶度达84s,环压指数达7.36N·m/g,较空白样提高了17.7%。     

松香对聚丙烯酸酯压敏胶粘合性能的影响

松香乳液和聚丙烯酸酯乳液共混 ,用共混液涂布成压敏胶带 ,考察了松香用量对压敏胶带粘合性能的影响。结果表明 ,随松香用量增加 ,180°剥离强度提高 ,并出现峰值 ;初粘力变化不大 ;持粘力下降。     

由精制松香催化聚合制备二聚松香的研究

以SO24-/ZrO2、SO24-/TiO2、SO24-/ZnCl2为催化剂,采用精制松香为原料催化聚合制备二聚松香,利用色谱法分析二聚松香的含量.结果表明:最宜采用SO24-/ZnCl2作催化剂,其中n(H2SO4)∶n(ZnCl2)=0.6.在松香与溶剂质量比为1:1、SO24-/ZnCl2的用量为10%(m/m)、搅拌强度为800 rpm、120℃保温聚合反应10 h和270℃减压蒸馏(200 Pa)的条件下,制备了符合ZBB 72088-89规定的一级二聚松香:含量92%,软化点182℃,酸值150.6 mg KOH/g,收率≥74%;二级二聚松香:含量≥65.5%,软化点135℃,酸值157 mg KOH/g,收率≥95%.     

精制松香酯化法的无色松香树脂生产线设计

对精制松香酯化法生产无色松香树脂的生产线进行设计,根据生产工艺,以松脂为原料,经过前处理、水蒸气蒸馏、减压水蒸气蒸馏和减压精馏,生产精制松香,再以精制松香通过酯化生产无色松香树脂,生产线的设计充分考虑松脂、松香、松香树脂等物料特性以及生产规模、设备设施匹配。设计了年产3 000 t无色松香树脂的生产线,通过调试,得率≥93%,生产的产品具有颜色浅、软化点高和耐热性耐候性优良等特点,颜色(哈森色号)≤50,酸值≤30 mg KOH/g,软化点100～105℃,粘度(180℃)≥850 mPa.s,热稳性(180℃,4 h)(哈森色号)≤200。     

Solubility of calcium soaps of gum rosin,rosin acids and fatty acids

Summary The solubility of calcium soaps of rosin acids and fatty acids have been determined and compared. The solubility of calcium soaps of rosin acids (d-pimaric, dihydroabietic, and l-abietic acids) present in gum rosin was found to be greater than that of the calcium soaps of the following saturated fatty acids: lauric, myristic, palmitic, and stearic acids. The calcium oleate was much more soluble than the calcium stearate. As the amount of hydrogen in the rosin acid molecule is increased, l-abietic to dihydroabietic to tetrahydroabietic acid, the solubility of the calcium soap is decreased. The author wishes to express his indebtedness to Dr. G. S. Jamieson and W. G. Rose of the Agricultural Chemical Research Division for the pure lauric, myristic, palmitic and stearic acid used in this study.     

声化学法合成马来松香

The cycloaddition reaction of rosin and maleic anhydride under ultrasonic irradiation has been investigated. The results show that both isomerization and Diels-Alder cycloaddition reactions were accelerated remarkably. The sonochemical reaction reached equilibrium in 5-10 min at 110℃, comparing with regular synthesis of 4-5 h over 180℃.     

Preparation of polymer microspheres with a rosin moiety from rosin ester,styrene and divinylbenzene

Rosin was reacted with hydroxyethyl methacrylate to produce a macromonomer. This macromonomer was used to partly replace styrene for the novel preparation of polymer microspheres with divinylbenzene via suspension polymerization. Orthogonal experiments were conducted to analyze the factors influencing the particle size, particle size distribution, swelling ratio and degree of crosslinking of the polymer microspheres. Fourier transform IR spectroscopy, thermogravimetry and scanning electron microscopy were used to examine the structures, thermal properties and morphologies, respectively, of the polymer microspheres. The results showed that the amount of dispersant had the greatest influence on particle size and distribution. On the other hand, the monomer ratio greatly influenced the swelling ratio and degree of crosslinking of the polymer microspheres. The decomposition temperature of the polymer microspheres increased upon introduction of the rosin moiety into the product. Open pores were abundant on the surface of the polymer microspheres due to the existence of the porogen, which provided a base for adsorption and separation. The present study opens a novel route for using naturally occurring rosin. Copyright © 2012 Society of Chemical Industry     

松香催化加氢反应的研究进展

氢化松香是松香改性产品的主要品种之一,有广泛的工业用途。将松香催化加氢可去除枞酸型树脂酸的共轭不饱和性,克服其易于氧化变色的缺点。综述了40多年来国内外对松香催化加氢反应的研究进展。指出影响松香氢化反应的主要因素是催化剂种类及用量、反应温度和氢气压力。今后对松香催化加氢反应的研究主要是研制具有更高活性和选择性的新型催化剂,以进一步降低温度和压力。同时,诸如松香催化加氢的反应机理等理论问题也有待深入研究。     

Surface tension of rosin soap solutions

Summary The surface tension of soap solutions made from rosins and rosin acids has been measured and the surface tension of fatty acid soap solutions and fatty acidresin soap solutions have been measured and compared.