lac color是什么意思

用法例句

Aleuritic is an important raw material in the synthesis of civetone or dihydrocivetone in perfumery industry An extraction process of aleuritic acid from the seedlac was developed.

以颗粒紫胶为原料提取紫胶桐酸,在不加入任何有机溶剂的情况下,可获得质量分数>98%的紫胶桐酸产品。

the composition and structure of seedlac are introduced in this paper,the usage,properties and specification,and the manufacture process of the series products of seedalc are also introduced.

概述了紫胶的组成和结构,以及国内外紫胶组成与结构的差别。

Application of Shellac Resin in Fabricating Optical Polishing Pills;

紫胶树脂在加工光学抛光片中的应用

Used as raw material, shellac was immersed with distilled water and lac dye was extracted.

以紫胶为原料,通过单因素及正交实验研究紫胶色素提取效率的诸多因素影响,结果表明:紫胶色素提取最佳工艺条件为粒度<1mm、料液比1∶12、浸泡温度60℃、浸泡时间6h、提取级数3级。

The research is made on dewaxing shellac by centrifugal subside and refining shellac-wax by Carbon tetrachloride extraction.

介绍了用离心沉降对紫胶脱蜡和四氯化碳萃取精制紫胶蜡的研究过程和结果 。

Study on the phenol-formaldehyde resin adhesive modified with lac;

紫胶改性酚醛树脂胶粘剂的研究

Identification of Different Lac with Infrared Spectrum;

不同类型紫胶的红外光谱鉴别

The Basic Compostition of Domestic Lac;

中国紫胶树脂基本组成的研究

Extraction of aleuritic acid by saponification aided with ultrasonic wave;

超声皂化法提取紫胶桐酸

Aleuritic is an important raw material in the synthesis of civetone or dihydrocivetone in perfumery industry An extraction process of aleuritic acid from the seedlac was developed.

以颗粒紫胶为原料提取紫胶桐酸,在不加入任何有机溶剂的情况下,可获得质量分数>98%的紫胶桐酸产品。

The composition and process of lac wax,lac dye,and aleuritic acid are introduced as an important part in the thesis,the trend of the seedlac product development and design,such as the mechanism of bleaching,the technique of bleaching,shellac dechlorination,new applications of seedlac etc.

详细阐述了国内外紫胶深加工系列产品的加工技术及生产工艺,重点介绍了紫胶蜡、紫胶色素、紫胶桐酸、漂白胶的生产技术及工艺状况。

The research is made on dewaxing shellac by centrifugal subside and refining shellac-wax by Carbon tetrachloride extraction.

介绍了用离心沉降对紫胶脱蜡和四氯化碳萃取精制紫胶蜡的研究过程和结果 。

The experimental results showed that the constituents of lac and the molecular composition of the domestic lac resin were similar to that of Indian lac.

定量测定了紫胶树脂基本成分的含量;分离得到了紫胶树脂链状脂肪酸和环状萜烯酸的代表物——紫胶桐酸和壳脑酸。

The analog of agrotic pheromone E- 7 -pentadecen- 1 - ol acetate is synthesized from aleutric acid by three steps.

以紫胶桐酸为原料，经三步反应合成了地老虎性信息素类似物Ｅ－７－十五碳稀－１－醇乙酸酯。