CN209481522U - 一种用于均苯四甲酸二酐的提纯装置 - Google Patents
一种用于均苯四甲酸二酐的提纯装置 Download PDFInfo
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- CN209481522U CN209481522U CN201822070761.0U CN201822070761U CN209481522U CN 209481522 U CN209481522 U CN 209481522U CN 201822070761 U CN201822070761 U CN 201822070761U CN 209481522 U CN209481522 U CN 209481522U
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112742106A (zh) * | 2021-02-22 | 2021-05-04 | 河南科技学院 | Dmdo结晶体脱色干燥装置 |
CN113583016A (zh) * | 2021-09-01 | 2021-11-02 | 潍坊弘润新材料有限公司 | 一种粗均苯四甲酸二酐提高纯度的方法及其装置和应用 |
CN113604899A (zh) * | 2021-09-08 | 2021-11-05 | 许绝电工股份有限公司 | 一种聚酰亚胺纤维的连续化生产方法 |
WO2021223066A1 (zh) * | 2020-05-05 | 2021-11-11 | 鹏辰新材料科技股份有限公司 | 一种均苯四甲酸二酐生产用原料过滤装置 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021223066A1 (zh) * | 2020-05-05 | 2021-11-11 | 鹏辰新材料科技股份有限公司 | 一种均苯四甲酸二酐生产用原料过滤装置 |
CN112742106A (zh) * | 2021-02-22 | 2021-05-04 | 河南科技学院 | Dmdo结晶体脱色干燥装置 |
CN113583016A (zh) * | 2021-09-01 | 2021-11-02 | 潍坊弘润新材料有限公司 | 一种粗均苯四甲酸二酐提高纯度的方法及其装置和应用 |
CN113604899A (zh) * | 2021-09-08 | 2021-11-05 | 许绝电工股份有限公司 | 一种聚酰亚胺纤维的连续化生产方法 |
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Denomination of utility model: A purification device for pyromellitic dianhydride Effective date of registration: 20210120 Granted publication date: 20191011 Pledgee: Bank of China Limited by Share Ltd. Puyang branch Pledgor: Puyang Hengfeng Electronic Insulation Material Co.,Ltd. Registration number: Y2021980000551 |
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Date of cancellation: 20220120 Granted publication date: 20191011 Pledgee: Bank of China Limited by Share Ltd. Puyang branch Pledgor: Puyang Hengfeng Electronic Insulation Material Co.,Ltd. Registration number: Y2021980000551 |
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Denomination of utility model: A purification device for pyromellitic dianhydride Effective date of registration: 20220121 Granted publication date: 20191011 Pledgee: Bank of China Limited by Share Ltd. Puyang branch Pledgor: Puyang Hengfeng Electronic Insulation Material Co.,Ltd. Registration number: Y2022980000959 |
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Date of cancellation: 20230522 Granted publication date: 20191011 Pledgee: Bank of China Limited by Share Ltd. Puyang branch Pledgor: Puyang Hengfeng Electronic Insulation Material Co.,Ltd. Registration number: Y2022980000959 |
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Denomination of utility model: A purification device for pyromellitic dianhydride Effective date of registration: 20230524 Granted publication date: 20191011 Pledgee: Bank of China Limited by Share Ltd. Puyang branch Pledgor: Puyang Hengfeng Electronic Insulation Material Co.,Ltd. Registration number: Y2023980041478 |