Title:
METHOD FOR PREPARING CALCIUM SULFATE DIHYDRATE WHISKERS AND CALCIUM SULFATE HEMIHYDRATE WHISKERS AND PRODUCT PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2021/000586
Kind Code:
A1
Abstract:
Disclosed is a method for preparing calcium sulfate dihydrate whiskers, calcium sulfate hemihydrate whiskers, and a product prepared therefrom. The method for preparing the calcium sulfate dihydrate whiskers comprises using hemihydrate gypsum or type III anhydrous gypsum as a raw material, mixing the raw material in a solution containing a crystal modifier, and performing a hydration crystallization to obtain the calcium sulfate dihydrate whiskers. The method for preparing calcium sulfate hemihydrate whiskers comprises heating the calcium sulfate dihydrate whiskers to obtain the calcium sulfate hemihydrate whiskers.
Inventors:
WANG SHAN (CN)
TANG YONGBO (CN)
MENG XING (CN)
LIU LIJUAN (CN)
MA HONGQING (CN)
CHEN TIANTIAN (CN)
LI SHANSHAN (CN)
ZHU XU (CN)
WANG WEILI (CN)
JIANG TAO (CN)
ZHANG JING (CN)
TANG YONGBO (CN)
MENG XING (CN)
LIU LIJUAN (CN)
MA HONGQING (CN)
CHEN TIANTIAN (CN)
LI SHANSHAN (CN)
ZHU XU (CN)
WANG WEILI (CN)
JIANG TAO (CN)
ZHANG JING (CN)
Application Number:
PCT/CN2020/076051
Publication Date:
January 07, 2021
Filing Date:
February 20, 2020
Export Citation:
Assignee:
JIANGSU EFFUL SCIENCE AND TECH CO LTD (CN)
International Classes:
C30B29/46; C30B7/14; C30B29/62
Foreign References:
| CN109706526A | 2019-05-03 | |||
| CN109706526A | 2019-05-03 | |||
| CN103966670A | 2014-08-06 | |||
| CN108411369A | 2018-08-17 | |||
| CN103924301A | 2014-07-16 | |||
| CN109137084A | 2019-01-04 | |||
| CN105350066A | 2016-02-24 | |||
| JPS5187494A | 1976-07-31 |
Other References:
DING, RUNMEI ET AL.: "Morphology Control and Growth Mechanism of Calcium Sulfate Whisker from Recrystallization Induced by Temperature Elevation", JOURNAL OF SYNTHETIC CRYSTALS, vol. 44, no. 07, 31 July 2015 (2015-07-31), ISSN: 1000-985X, DOI: 9340304
WANG, ZHONGHAN ET AL.: "Large-scale Preparation of CaSO4ยท2H2O Nanowhiskers at Room Temperature", JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE), vol. 40, no. 07, 31 July 2017 (2017-07-31), ISSN: 1003-5060, DOI: 9340305
LI, XIANGQING ET AL.: "Preparation of Calcium Sulfate Whisker in Micrometer Scale", CHINESE JOURNAL OF APPLIED CHEMISTRY, vol. 24, no. 08, 31 August 2007 (2007-08-31), ISSN: 1000-0518, DOI: 9340306
WANG, ZHONGHAN ET AL.: "Large-scale Preparation of CaSO4ยท2H2O Nanowhiskers at Room Temperature", JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE), vol. 40, no. 07, 31 July 2017 (2017-07-31), ISSN: 1003-5060, DOI: 9340305
LI, XIANGQING ET AL.: "Preparation of Calcium Sulfate Whisker in Micrometer Scale", CHINESE JOURNAL OF APPLIED CHEMISTRY, vol. 24, no. 08, 31 August 2007 (2007-08-31), ISSN: 1000-0518, DOI: 9340306
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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