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Résines époxydes, 3. Etude de quelques prépolymères époxydes bromés par GPC, HPLC et NMR

✍ Scribed by Gulino, Danièle ;Galy, Jocelyne ;Pascault, Jean-Pierre ;Pham, Quang Tho

Publisher
Wiley (John Wiley & Sons)
Year
1984
Weight
382 KB
Volume
185
Category
Article
ISSN
0025-116X

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✦ Synopsis

Examinations by GPC, HPLC and NMR of several commercial prepolymers containing epoxy groups show that they are based on bisphenol A (DGEBA) and brominated bisphenol A (DGEBtBr). In some cases, brominated monoepoxides are also added to the mixture to diminish its viscosity. Consequently, the three-dimensional networks resulting from the polycondensation of brominated resins with diamines can be greatly affected by the presence of these monoepoxides that modify the epoxy/amine ratios. a) Partie 2: cf.2). *) Nom systtmatique: bis[epoxy-2,3 propoxy)-4 phtnyll-2,2 propane. **) Nom systtmatique: bis([bis(tpoxy-2.3 propyl)amino]-4 phtnyllmtthane.

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## Abstract The reaction of α‐naphthylacetic acid (1) (a plant growth stimulator) with 4,5‐epoxy‐4‐methyloctane (2) which reproduces the constitutional unit of epoxidized 1,4‐polyisoprene was studied. The rate of addition of the acid to the oxirane ring of 2 in chloroform with the tetramethylammoni