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-di
Etude du prépolymère époxyde par chromatographie et 1H NMR à 350 mhz, 2
✍ Scribed by Gulino, Danièle ;Galy, Jocelyne ;Pascault, Jean Pierre ;Pham, Quang Tho
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1984
- Weight
- 707 KB
- Volume
- 185
- Category
- Article
- ISSN
- 0025-116X
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
In order to assign all -CH,CI resonances observed by ' H NMR in poly(viny1 chloride), (PVC), a preliminary study of the diastereoisomers of molecular models for the groups CH2Cl-CHCI- [11] and ClCH,-CH< [IV] is used, in conjunction with spin echo experiments. The complex region [3,5 -4,O ppm] which
## 4-Chloro-3-chloromethylheptane (2) and 1,2,4-trichloropentane (3) were synthesized and analysed by means of 'H NMR. These compoundswith two asymmetric carbon atomsare models for two types of structure involving chloromethyl groups present in poly(viny1 chloride): short chloromethyl branches and