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| 化妆品级粒状羊毛醇的制备 |
| Preparation of cosmetic-grade granular lanolin alcohol |
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| DOI： |
| 中文关键词: 羊毛醇 化妆品级 粒状 分子蒸馏 |
| 英文关键词:lanolin alcohol cosmetic-grade granular molecular distillation |
| 基金项目: |
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| 中文摘要: |
| 以工业级羊毛醇为原料，经过两级分子蒸馏及造粒工艺制备化妆品级粒状羊毛醇，对工艺条件进行了优化。结果表明：在真空度10 Pa、一级分子蒸馏温度200 ℃、二级分子蒸馏温度240 ℃、进料速率400 mL/h、刮膜转速20 r/min的条件下，经两级分子蒸馏得到化妆品级羊毛醇，然后在环境温度10 ℃、环境湿度20%、进料温度60 ℃的条件下将化妆品级羊毛醇造粒，得到化妆品级粒状羊毛醇。在上述工艺条件下，产物总收率达到91.46%，成品一次合格率达到97.85%，产物酸值和皂化值符合欧洲和美国药典对化妆品级羊毛醇的要求。 |
| 英文摘要: |
| With industrial-grade lanolin alcohol as raw material, the cosmetic-grade granular lanolin alcohol was prepared by two-stage molecular distillation and granulation process, and the process conditions were optimized. The resuls showed that cosmetic-grade lanolin alcohol was obtained by two-stage molecular distillation under the conditions of vacuum degree 10 Pa, first molecular distillation temperature 200 ℃, second molecular distillation temperature 240 ℃, feeding rate 400 mL/h and film scraping speed 20 r/min. Then, cosmetic-grade granular lanolin alcohol was obtained by granulation process under the conditions of ambient temperature 10 ℃, ambient humidity 20% and feeding temperature 60 ℃. Under these conditions, the product total yield reached 91.46%, and the primary qualification rate was 97.85%. The acid value and saponification value conformed to the European Pharmacopoeia and the United States Pharmacopoeia. |
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