发明名称 |
PROCESS FOR THE PRODUCTION OF POLYIMIDE AND POLYAMIC ESTER POLYMERS |
摘要 |
This disclosure relates to a process of purifying a polymer. The process includes (a) providing an organic solution containing a polyimide or polyamic ester in at least one polar, aprotic polymerization solvent; (b) adding at least one purification solvent to the organic solution to form a diluted organic solution, the at least one purification solvent is less polar than the at least one polymerization solvent and has a lower water solubility than the at least one polymerization solvent at 25° C.; (c) washing the diluted organic solution with water or an aqueous solution to obtain a washed organic solution; and (d) removing at least a portion of the at least one purification solvent in the washed organic solution to obtain a solution containing a purified polyimide or polyamic ester. This disclosure also relates to a process of preparing a film on a semiconductor substrate, as well as related purified polymer solutions, films, and articles. |
申请公布号 |
US2014343223(A1) |
申请公布日期 |
2014.11.20 |
申请号 |
US201414280827 |
申请日期 |
2014.05.19 |
申请人 |
Fujifilm Electronic Materials U.S.A., Inc. |
发明人 |
Reinerth William A.;Malik Sanjay;De Binod B. |
分类号 |
C08G73/10;C09D179/08 |
主分类号 |
C08G73/10 |
代理机构 |
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代理人 |
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主权项 |
1. A process of purifying a polymer, comprising:
providing an organic solution containing a polyimide or polyamic ester in at least one polar, aprotic polymerization solvent; adding at least one purification solvent to the organic solution to form a diluted organic solution, the at least one purification solvent is less polar than the at least one polymerization solvent and has a lower water solubility than the at least one polymerization solvent at 25° C.; washing the diluted organic solution with water or an aqueous solution to obtain a washed organic solution; and removing at least a portion of the at least one purification solvent in the washed organic solution to obtain a solution containing a purified polyimide or polyamic ester. |
地址 |
North Kingstown RI US |