Title:
PREPARATION PROCESS FOR PHENOXYETHANOL AS COSMETIC RAW MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/022300
Kind Code:
A1
Abstract:
A preparation process for phenoxyethanol as a cosmetic raw material comprises the following steps: reacting phenol as an initiator with ethylene oxide in the presence of a base catalyst to obtain a phenoxyethanol crude product; rectifying the phenoxyethanol crude product under a reduced pressure to obtain high-purity phenoxyethanol; adsorbing phenol in the high-purity phenoxyethanol by using an activated macroporous adsorbent to obtain a saturated macroporous adsorbent and a cosmetic raw material phenoxyethanol. The phenoxyethanol has high purity and low phenol content. The process is simple, and the macroporous adsorbent can be recycled after being activated by alkali liquor.
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Inventors:
KOU RAN (CN)
WANG WEISONG (CN)
JIN YIFENG (CN)
WAN QINGMEI (CN)
GAO HONGJUN (CN)
WANG WEISONG (CN)
JIN YIFENG (CN)
WAN QINGMEI (CN)
GAO HONGJUN (CN)
Application Number:
PCT/CN2021/106807
Publication Date:
February 03, 2022
Filing Date:
July 16, 2021
Export Citation:
Assignee:
ZHEJIANG HUANGMA TECH CO LTD (CN)
ZHEJIANG HUANGMA NEW MATERIALS TECH CO LTD (CN)
ZHEJIANG LUKEAN CHEMICAL CO LTD (CN)
SHANGYU HUANGMA SURFACE ACTIVATED REAGENT RES INSTITUTE CO LTD (CN)
ZHEJIANG HUANGMA NEW MATERIALS TECH CO LTD (CN)
ZHEJIANG LUKEAN CHEMICAL CO LTD (CN)
SHANGYU HUANGMA SURFACE ACTIVATED REAGENT RES INSTITUTE CO LTD (CN)
International Classes:
C07C41/03
Foreign References:
| CN111718244A | 2020-09-29 | |||
| CN111454129A | 2020-07-28 | |||
| CN104926618A | 2015-09-23 | |||
| CN110642706A | 2020-01-03 | |||
| JP2004143075A | 2004-05-20 | |||
| EP3266807A1 | 2018-01-10 | |||
| DD282448A5 | 1990-09-12 |
Other References:
"Fundamental Principles of Environmental Chemical Engineering", 30 June 2017, ISBN: 978-7-5603-6132-1, article WU, YINING ET AL.: "Regeneration of Adsorbents", pages: 225, XP009534056
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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