发明名称 |
Aromatic polysulfone resin and membranes thereof |
摘要 |
According to the present invention, an aromatic polysulfone resin is offered which is suitable as film material, especially in porous membranes. The aromatic polysulfone resin of the present invention has a reduced viscosity of 0.55-0.65 dL/g, and preferably 0.58-0.62 dL/g, number average molecular weight (Mn) of 22000 or more, and preferably 23500 or more, and a value of the ratio of weight average molecular weight (Mw) relative to number average molecular weight (Mn) of 2.54 or less, and preferably 2.50 or less. |
申请公布号 |
US9587112(B2) |
申请公布日期 |
2017.03.07 |
申请号 |
US201013498877 |
申请日期 |
2010.09.14 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
Kohinata Yusaku;Harada Hiroshi |
分类号 |
C08G75/20;C08L81/06;B01D67/00;B01D69/02;B01D71/68;C08J5/18 |
主分类号 |
C08G75/20 |
代理机构 |
Foley & Lardner LLP |
代理人 |
Foley & Lardner LLP |
主权项 |
1. Aromatic polysulfone resin, wherein reduced viscosity is 0.55-0.65 dL/g, number average molecular weight (Mn) is 22000 or more, a value of the ratio (Mw/Mn) of weight average molecular weight (Mw) relative to number average molecular weight (Mn) is 2.54 or less, and a proportion of a repeating unit represented by a formula (1) is 80 to 100 mol %, relative to the total of all repeating units,
Ph1-SO2-Ph2-O— (1) wherein Ph1 and Ph2 each independently represent a phenylene group, and hydrogen atoms of the aforementioned phenylene groups may each be independently substituted with one of an alkyl group, an aryl group, and a halogen atom. |
地址 |
Tokyo JP |