Development of UV Cutting Materials and the Application to living Environmental Materials (Closes or Domestic Articles)

成色剂广泛应用于纺织品的热致变色系统中，但其耐光性较差。因此，目前正在寻求提高耐光性的方法。各种稳定剂已被合成，以延长有色植物的寿命。研究了这些化合物对纤维素光褪色的延缓作用。研究发现，含两性反离子基团的紫外吸收剂对提高热致变色纺织品着色剂的耐光性有重要作用。近年来，人们对天然色素的化学性质也越来越感兴趣，特别是随着天然色素的使用越来越多。合成了多种苯基酯类化合物，并在固体状态下考察了它们对天然色素——红花红、红花素和栀子蓝的光褪色保护作用。单纯紫外吸收剂的应用并不一定有助于提高天然色的耐光性。然而，苯基酯紫外吸收剂含有单线态氧猝灭剂磺酸镍基团，几乎完全抑制了这些颜色的光褪色速率。保护环境和人类健康现在被认为比企业的盈利能力和效率更重要。因此，研究了这些紫外吸收材料的抗菌活性。本研究开发的UV切割材料均未显示出对这两种细菌的活性。因此，本文所发现的提高天然色牢度的成功技术对环境和人体健康都是安全的。

Color formers are extensively used in thermochromic systems for textiles, but their light fastness properties are poor. The improvement of light fastness is therefore being sought at the present time. Various kinds of stabilizers have been synthesized to prolong the life of colored species derived from color formers. The retarding effect of these compounds towards photofading was investigated on cellulose. It was found that the UV absorbers bearing the groups capable of acting as an amphoteric counter-ion play very important role in improving the light fastness of colorants for thermochromic textiles.Interest in the chemistry of natural colors has also increased in recent years, particularly with the increased use of naturally occurring pigments. Various kinds of phenyl ester compounds were synthesized and their protective effects against photofading of natural colors, Safflower Red Carthamin and Gardenia Blue, were examined on solid states. The application of simple UV absorbing compounds was not necessarily useful for improving the light fastness of natural colors. However, Phenyl ester UV absorbers bearing a singlet oxygen quencher, nickel sulfonate group, almost perfectly suppressed the photofading rates of these colors.Protection of the environment and human health is now perceived as more important than the profitability and efficiency of a business. The antimicrobial activity of these UV absorbing materials was therefore investigated. None of UV cutting materials developed in this study showed activity against either bacteria. Accordingly, the successful technique for improving light fastness of natural colors discovered here was safe for the environment and human health.