CN101914041B - 药用尿素的精制方法 - Google Patents
药用尿素的精制方法 Download PDFInfo
- Publication number
- CN101914041B CN101914041B CN2010102580022A CN201010258002A CN101914041B CN 101914041 B CN101914041 B CN 101914041B CN 2010102580022 A CN2010102580022 A CN 2010102580022A CN 201010258002 A CN201010258002 A CN 201010258002A CN 101914041 B CN101914041 B CN 101914041B
- Authority
- CN
- China
- Prior art keywords
- urea
- medicinal
- solvent
- agricultural
- alcoholic solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000004202 carbamide Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007670 refining Methods 0.000 title abstract 2
- 239000002904 solvent Substances 0.000 claims abstract description 26
- 230000001476 alcoholic effect Effects 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 238000000746 purification Methods 0.000 claims description 7
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 6
- 238000002425 crystallisation Methods 0.000 claims description 3
- 125000001033 ether group Chemical group 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000010992 reflux Methods 0.000 abstract description 2
- 239000004210 ether based solvent Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010102580022A CN101914041B (zh) | 2010-08-20 | 2010-08-20 | 药用尿素的精制方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102580022A CN101914041B (zh) | 2010-08-20 | 2010-08-20 | 药用尿素的精制方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101914041A CN101914041A (zh) | 2010-12-15 |
CN101914041B true CN101914041B (zh) | 2012-03-21 |
Family
ID=43321719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010102580022A Expired - Fee Related CN101914041B (zh) | 2010-08-20 | 2010-08-20 | 药用尿素的精制方法 |
Country Status (1)
Country | Link |
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CN (1) | CN101914041B (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102442928B (zh) * | 2012-01-09 | 2013-10-16 | 四川泸天化股份有限公司 | 一种尿素提纯方法 |
CN102584635B (zh) * | 2012-01-09 | 2013-10-02 | 四川泸天化股份有限公司 | 一种车用尿素的制备方法 |
CN107540576B (zh) * | 2017-10-11 | 2023-07-18 | 四川大学 | 一种高纯度粒状晶体尿素制备方法及系统 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101830833A (zh) * | 2010-05-25 | 2010-09-15 | 符爱清 | 药用尿素的精制方法 |
-
2010
- 2010-08-20 CN CN2010102580022A patent/CN101914041B/zh not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101830833A (zh) * | 2010-05-25 | 2010-09-15 | 符爱清 | 药用尿素的精制方法 |
Non-Patent Citations (2)
Title |
---|
陈五平.第二篇 尿素.《无机化工工艺学:第三版 上册,合成氨、尿素、硝酸、硝酸铵》.2002,251-252. * |
魏明等.尿素的结晶习性和晶体缺陷研究.《人工晶体学报》.1988,252. * |
Also Published As
Publication number | Publication date |
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CN101914041A (zh) | 2010-12-15 |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20101215 Assignee: Nantong Haiers Pharmaceutical Co., Ltd. Assignor: Fu Aiqing Contract record no.: 2013320000304 Denomination of invention: Refining method for medicinal urea Granted publication date: 20120321 License type: Exclusive License Record date: 20130407 |
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LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20180807 Address after: 226400 No. 9, Chen Gao Industrial Park, dugong Town, Rudong County, Nantong, Jiangsu. Patentee after: Shanghai Xudong Hepu Nantong Pharmaceutical Co., Ltd. Address before: 226400 Nantong Hills Pharmaceutical Co., Ltd., No. 9, Chen Gao Industrial Park, Rudong County, Nantong, Jiangsu Patentee before: Fu Aiqing |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20180820 |