Natural plant ultraviolet absorbent is ground from ultraviolet absorbing plant into organic solvent under dry vacuum condition .

纯天然植物 紫 外 吸收剂是由对紫外光有吸收作用的草本植物通过干品粉碎，用有机溶剂萃取、真空干燥后获得。

At the same time the heat stabilizer and ultraviolet absorbent can effectively improve thermal aging property of the composites .

通过适当加入抗热老化氧化剂及 紫外线 吸收 荆能有效改善材料的耐热老化性能。

Synthesis of Ultraviolet Absorbent UV-326 by Rongalite Method

保险粉法合成 紫外线 吸收剂UV-326

Synthesis of ultraviolet absorbent UV-326 by phase transfer catalysis

相转移催化合成 紫外线 吸收剂UV-326

In the presence of catalyst UV-1009 a high molecular weight ultraviolet absorbent was synthesized from TEPIC higher fatty acids and DHB as the raw materials in two stages of reactions .

从TEPIC（异氰尿酸三环氧丙酯）和高级脂肪酸及DHB（2，4二羟基二苯甲酮）为原料，在催化剂作用下，分步反应合成高分子量 紫外线 吸收剂UV&1009。

This concludes that the natural plant ultraviolet absorbent has a high absorbing ability under ultraviolet light and can withstand ultraviolet light with long wavelength .

说明新型天然植物 紫 外 吸收剂对紫外线有较好的吸收，能屏蔽各种波长的紫外光。

Sunscreens and Skin Care Cream Formulation with Vitamin A as Ultraviolet Absorbent

用维生素A作 紫外光 吸收剂试制防晒营养霜

A New Process for Production of Ultraviolet Absorbent UV-531

紫外线 吸收剂UV-531合成新工艺

The ultraviolet absorbents could decrease the color difference after solarization and improve the color fastness to light of PLA fabric . The ultraviolet absorbent which had the best effect on the color fastness to light was UV-531 and its dosage was 2 % ( o.w.f ) .

紫外线 吸收剂的加入对聚乳酸织物的耐光色牢度有一定的改善作用，能减小日晒后的色差，即提高耐光色牢度，其中2%浓度的UV-531效果较好。

At present the ultraviolet absorbent UV-1 was applied widely at home and abroad .

目前 紫外线 吸收剂UV-1在国内外已得到了广泛的应用。

Study on Spectral Properties of Natural Plant Ultraviolet Absorbent

纯天然植物 紫 外 吸收剂的光谱特性研究

This paper deals with the ultraviolet absorbent used in yellowing-resistant finishing for silks and its combination application with resin to the finishing in one-bath chemical process .

文中介绍了采用常用 紫外线 吸收剂处理及其与树脂化学加工同浴处理的研究及效果。

After studying absorb ultraviolet radiation plexiglas sheets the good ultraviolet absorbent UV-326 was selected and the appropriate adding amounts were 4 10-4 of MMA .

通过吸收紫外线有机玻璃的研究，筛选出了综合性能优良的 紫外线 吸收剂UV-326，并确定了其最宜的加入量为MMA的4×10~（-4）。

Synthesis of β - diketone compounds for UV-A ultraviolet absorbent

β-二酮类UV-A 紫外线 吸收剂的合成

This paper reports the synthetic method of an Uv-A ultraviolet absorbent 4-methyl-4 ′ - methoxy-dibenzoyl methane ; the construction and function of the ultraviolet absorbent was verified by chemical element analysis MS and UV instrument test .

介绍了一种抗A紫 外光线A波段化合物（抗A 紫外光 吸收剂）的合成方法，并通过元素分析、质谱、紫外等测试手段，对合成 化合物进行结构分析和功能鉴定。

The discolored method of ultraviolet absorbent was studied by comparing one with the others .

通过对光谱特性分析结果的比较，探索天然 紫 外 吸收剂的脱色方法。

Ultraviolet Absorbent UV - 1

紫外线 吸收剂 UV-1

The optimum type and amount of ultraviolet absorbent and antioxidant were determined by ultraviolet accelerated thermal aging properties testing .

通过紫外加速热老化性能表征，确定了 紫 外 吸收剂以及抗氧剂的最佳种类和用量。

Based on different action principle light stabilizers were defined as ultraviolet light screening agent ultraviolet absorbent quencher and free radical catching agent .

根据光稳定剂作用机理的不同，将光稳定剂分为光屏蔽剂、 紫外线 吸收剂、激发态猝灭剂及自由基捕获剂。

Synthesis of High Molecular Weight Ultraviolet Absorbent UV 1009

高分子量 紫外线 吸收剂UV－1009的合成

Application of Ultraviolet Absorbent to Yellowing-Resistant Finishing for Silks

紫外线 吸收剂与真丝绸防黄变整理

Progress on Ultraviolet Absorbent BP-3 Used in Sunscreen Cosmetic

防晒化妆品用 紫外线 吸收剂BP-3的研究进展

This new type of ultraviolet absorbent has brown colour in solid form but when it mixes with alcohol and water its colour changes to light yellow in liquid form .

新型 紫 外 吸收剂固体呈现暗褐色，用乙醇和水配成溶液（ 紫 外吸收剂原液）呈淡黄色。

Secondly Results from mixing different kinds of additive into the plastic films indicate that it is significant to obstruct ultraviolet when antioxygen and benzotriazole UV absorbent were mixed and it can pass through visible light more than 70 % .

其次，采用不同种类的助剂混合添加，结果发现抗氧剂与苯并三唑类紫外线 吸收剂混合使用时能有效的阻隔 紫 外 光线，且对可见光线的透过率大于70%。