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羟基酸作为传统的抗衰老美白产品的活性组分,在功效类化妆品中具有重要的作用。本文对国内外包含α-羟基酸的化妆品的专利文献进行收集、整理、统计和分析,梳理了α-羟基酸在化妆品中的应用,希望对该领域的专利研发有所帮助。 相似文献
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化妆品中的α-羟基酸类美国FDA在1997年2月19日发布了一项有关化妆品中羟基酸类使用情况的背景资料。近年来,α羟基酸(AHAs)越来越多地用于化妆品中,尽管其安全性方面尚有许多未能解答的问题。最近由化妆品工业倡导的一项研究表明,这些产品会引起使... 相似文献
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《日用化学工业》2021,51(1)
采用《化妆品安全技术规范》(2015年版)中相应的测定方法对市售518批烫发类化妆品进行巯基乙酸及pH值的检测,并对巯基乙酸检测结果、标签标识及批件配方一致性进行了比对,分析研究烫发类化妆品的质量安全状况,发现风险并提出合理监管建议。结果表明,总体不合格样品97批,不合格率18.73%,巯基乙酸测定值均未超出限度,但66批次不合格的样品是由于巯基乙酸测定结果与标签标识及批件配方比对不一致导致的,1批次pH值未达标,31批次不合格样品是单纯标签或批件问题。针对结果进行多维度比较及关键指标测定值的深入剖析,提出针对烫发类化妆品市场存在的诸多问题,应加强此类化妆品集中区域或标签标识及批件等不规范问题的专项抽检,尽早市场规范化。 相似文献
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我国脂肪酸的生产和应用 总被引:3,自引:0,他引:3
陆蠡珠 《精细与专用化学品》2007,15(1):24-28
简要介绍脂肪酸的分类、原料来源、生产工艺、品种以及用途。并对我国脂肪酸的生产现状进行了分析。重点介绍了脂肪酸在我国橡胶工业中、塑料助剂等领域的应用,脂肪酸甲酯作为表面活性剂在不同领域的广泛应用,最后还简述了癸二酸和改性醇酸树脂应用。 相似文献
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酸液体系的研究现状分析和现场应用 总被引:1,自引:0,他引:1
酸化解堵与压裂改造相比,它具有施工相对简单和成本相对较低等特点,所以酸化解堵是一项各油田广泛使用的油气田增产技术。酸化解堵技术已有将近100历史,现已研制出具有不同特点的酸液体系,如乳化酸、泡沫酸、固体酸、多氢酸等,基本能满足复杂地质条件对酸液的要求。 相似文献
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介绍了磷钼杂多酸的合成。通过正交试验探讨了反应物料量比、三氧化钼浓度、反应温度和反应时间对产物产率的影响。结果表明,最适宜的反应条件为:反应物量比n(三氧化钼)∶n(磷酸)=12∶1.0、反应温度t=70℃、反应时间7 h、三氧化钼与水的质量比1∶8。经红外光谱分析及熔点测定确定所得产品为磷钼杂多酸化合物。并以磷钼杂多酸取代硫酸作催化剂制备乙酸乙醋来研究其催化活性,并与硫酸做催化剂进行对比实验收率为70.75%,超过硫酸催化剂水平。 相似文献
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Claudio Guilherme Portela de Carvalho Luana Fernanda Mazzola Andressa Caldeira Flávio Carlos Dalchiavon José Marcos Gontijo Mandarino 《Journal of the American Oil Chemists' Society》2019,96(7):789-794
The objective of this work was to evaluate the quality of the oil extracted from sunflower achenes grown in Campo Novo de Parecis, the main producing region of Brazil, to optimize its use by the processing and food industries. In addition, the fatty acid profiles of the oil were checked for their adherence to the CODEX STAN 210–1999. Traditional and high-oleic genotypes were grown between 2014 and 2017 during trials with a randomized complete block experimental design with four replications. The contents of oleic, linoleic, palmitic, and stearic acids were determined using gas chromatography. The fatty acid profiles of traditional genotypes were observed to be outside the ranges established by the CODEX, with an oleic acid content above 39.4% and linoleic, palmitic, and stearic acid values lower than 48.3%, 2.7%, and 5.0%, respectively, as well as high-oleic sunflower oil with a stearic acid content of less than 2.6%. The availability of this information can, on the one hand, positively impact industries and encourage the use of better quality raw materials that are more technologically and nutritionally adequate. On the other hand, the commercialization of sunflower oil with a fatty acid profile outside the ranges established by CODEX can be difficult, because the contents are out of specification due to the climatic conditions in the cropping region. 相似文献
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P. Sanjeev D. P. Chaudhary P. Sreevastava S. Saha A. Rajenderan J. C. Sekhar G. K. Chikkappa 《Journal of the American Oil Chemists' Society》2014,91(6):1001-1005
Increasing utilization of specialty maize prompted us to evaluate its fatty acid profile. For this purpose maize germplasm, classified as low oil normal maize (group 1), high oil normal maize (group 2), quality protein maize (QPM) (group 3) and sweet corn (group 4) was evaluated for oil, starch, protein and fatty acid composition mainly palmitic, stearic, oleic and linoleic acid. High oil content was observed in sweet corn samples which might be result of shriveled grain texture because of an increased embryo to kernel ratio. Individual fatty acids showed wide differences among different groups. A slightly higher amount of palmitic acid was reported in specialty maize as compared to normal maize. In contrast, stearic acid content was significantly low in high oil normal maize (56 %), QPM (36.2 %) and sweet corn (28.4 %) in comparison to low oil normal maize. Although no significant differences were observed for oleic acid between low oil normal and high oil normal maize, but sweet corn samples showed significantly reduced oleic acid compared to low oil normal maize. However, the most important observation was the higher content of linoleic acid in specialty maize (groups 2, 3 and 4) as compared to low oil normal maize. Further, the ratio of MUFA/PUFA was also discussed. It was concluded that specialty maize possesses a better oil quality in comparison to low oil normal maize. 相似文献
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介绍了邻苯二甲酸酐-一缩二乙二醇-丙烯酸酯(简称PA—DEG—AA)的合成方法,通过正交试验分析了合成过程中反应温度、催化剂用量、原料配比、反应时间等因素的影响,并以之为单体配制了一种新型厌氧胶黏剂,测试了胶黏剂的粘结性能。 相似文献
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采用PES纳滤膜对不锈钢酸洗废液进行回收处理,在1.6~3.8 MPa的常温生产工况下进行全样本检测和回归分析,结果表明:废混酸中游离硝酸的浓度变化对金属离子的渗透率无明显影响;废混酸中金属离子含量变化时,渗透液中的金属离子也同步呈现正比例关系。纳滤对于废混酸的金属离子拦截率为20%~30%;游离硝酸的渗透率在80%~95%之间。纳滤膜用于不锈钢酸洗废液回收处理时,由于金属离子高导致酸不平衡而外排,必须采取措施提高金属离子拦截率,否则将制约纳滤膜在不锈钢废混酸回收领域的工业化应用。 相似文献
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