CN1203107C - 聚(l-乳酸-乙醇酸)的制备方法 - Google Patents
聚(l-乳酸-乙醇酸)的制备方法 Download PDFInfo
- Publication number
- CN1203107C CN1203107C CN 03158335 CN03158335A CN1203107C CN 1203107 C CN1203107 C CN 1203107C CN 03158335 CN03158335 CN 03158335 CN 03158335 A CN03158335 A CN 03158335A CN 1203107 C CN1203107 C CN 1203107C
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- Prior art keywords
- acid
- lactic acid
- poly
- ethanol
- polycondensation
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Abstract
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Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN 03158335 CN1203107C (zh) | 2002-12-10 | 2003-09-23 | 聚(l-乳酸-乙醇酸)的制备方法 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN02148525.9 | 2002-12-10 | ||
CN 02148525 CN1422884A (zh) | 2002-12-10 | 2002-12-10 | 聚(l-乳酸-乙醇酸)的制备方法 |
CN 03158335 CN1203107C (zh) | 2002-12-10 | 2003-09-23 | 聚(l-乳酸-乙醇酸)的制备方法 |
Publications (2)
Publication Number | Publication Date |
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CN1506391A CN1506391A (zh) | 2004-06-23 |
CN1203107C true CN1203107C (zh) | 2005-05-25 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN 03158335 Expired - Fee Related CN1203107C (zh) | 2002-12-10 | 2003-09-23 | 聚(l-乳酸-乙醇酸)的制备方法 |
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CN (1) | CN1203107C (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102532501B (zh) * | 2010-12-29 | 2014-07-09 | 安徽生建可降解聚乳酸新材料有限公司 | 一种聚(l-乳酸)及聚(l-乳酸-乙醇酸)的精制方法 |
CN103342800B (zh) * | 2013-07-15 | 2015-03-18 | 湖南尔康制药股份有限公司 | 一种负载型催化剂催化合成药用聚(乳酸 乙醇酸)的方法 |
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2003
- 2003-09-23 CN CN 03158335 patent/CN1203107C/zh not_active Expired - Fee Related
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Publication number | Publication date |
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CN1506391A (zh) | 2004-06-23 |
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Assignee: Wuhu Zhong Ren Pharmaceutical Co.,Ltd. Assignor: ANHUI ZHONGREN TECHNOLOGY CO.,LTD. Contract fulfillment period: 2008.8.8 to 2023.9.22 Contract record no.: 2008320000119 Denomination of invention: Process for the preparation of poly (L- lactic acid glycolic acid) Granted publication date: 20050525 License type: exclusive license Record date: 20080908 |
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Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.8 TO 2023.9.22 Name of requester: WU HU ZHONGREN PHARMACEUTICAL CO., LTD. Effective date: 20080908 |
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Assignee: WUHU SIMCERE ZHONGREN PHARMACEUTICAL Co.,Ltd. Assignor: ANHUI ZHONGREN TECHNOLOGY CO.,LTD. Contract fulfillment period: 2008.11.20 to 2023.9.22 Contract record no.: 2008320001127 Denomination of invention: Process for the preparation of poly (L- lactic acid glycolic acid) Granted publication date: 20050525 License type: exclusive license Record date: 20081211 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.20 TO 2023.9.22; CHANGE OF CONTRACT Name of requester: WUHU XIANSHENGZHONGREN PHARMACEUTICAL CO., LTD. Effective date: 20081211 |
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Owner name: ANHUI ZHONGREN MEDICAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHONGREN SCIENCE AND TECHNOLOGY CO., LTD., ANHUI PROV. Effective date: 20130514 |
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Effective date of registration: 20130514 Address after: Daoxiang road Hefei City, Anhui province 230088 Shushan New Industrial Park No. 9 Patentee after: Anhui Zhong Ren medical science and Technology Co.,Ltd. Address before: 230009 Tunxi Road, Anhui, China, No. 193, No. Patentee before: ANHUI ZHONGREN TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20160920 Address after: Daoxiang road Hefei city Shushan new industrial park of Anhui Province, No. 9 building 230088 Patentee after: HEFEI ZHONGREN TECHNOLOGY CO.,LTD. Address before: Daoxiang road Hefei City, Anhui province 230088 Shushan New Industrial Park No. 9 Patentee before: Anhui Zhong Ren medical science and Technology Co.,Ltd. |
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