Kehrmann; Prunier, Helvetica Chimica Acta, 1924, vol. 7, p. 472,988
作者:Kehrmann、Prunier
DOI:——
日期:——
METHODS OF MANUFACTURE FOR POLYETHERIMIDE
申请人:SABIC Global Technologies B.V.
公开号:EP3562862B1
公开(公告)日:2020-10-14
[EN] METHODS OF MANUFACTURE FOR POLYETHERIMIDE<br/>[FR] PROCÉDÉS DE FABRICATION DE POLYÉTHERIMIDE
申请人:SABIC GLOBAL TECHNOLOGIES BV
公开号:WO2018126001A1
公开(公告)日:2018-07-05
A method of making polyetherimide includes: reacting a diamine having four bonds between the amine groups, 4-halophthalic anhydride and 3-halophthalic anhydride at an imidization reaction temperature and pressure in the presence of a solvent and a polymer additive to produce a mixture including 3,3'-bis(halophthalimide), 3,4'-bis(halophthalimide), 4,4'-bis(halophthalimide), solvent, and the polymer additive wherein the molar ratio of 3-halophthalic anhydride to 4-halophthalic anhydride is 95:05 to 60:40; reacting the mixture with an alkali metal salt of a dihydroxy aromatic compound to produce a polyetherimide having a cyclics content less than 6 weight percent, based on the total weight of the polyetherimide, a glass transition temperature greater than or equal to 220°C, and a weight average molecular weight greater than or equal to 25,000 Daltons; wherein the polymer additive dissolves in the solvent at the imidization reaction temperature and pressure.
Notes
作者:G. R. Clemo、A. F. Daglish、J. R. Keneford、J. C. E. Simpson、D. H. Hey、D. S. Morris、A. F. Childs、L. J. Goldswokthy、G. F. Harding、S. G. P. Plant、G. A. Weeks、R. F. Batt、D. Woodcock
DOI:10.1039/jr9480002318
日期:——
Albert; Duewell, Journal of the Society of Chemical Industry, 1947, vol. 66, p. 11