Epoxy adhesives arc cross-linked resins prepared in two steps. The first step involves S N 2 reaction
Question:
Epoxy adhesives arc cross-linked resins prepared in two steps. The first step involves SN2 reaction of the disodium salt of bisphenol A with epichiorohydrin to form a low-molecular-weight prepolymer. This prepolymer is then ?cured? into a cross-linked resin by treatment with a triamine such as H2NCH2CH2NHCH2CH2NH2
(a) What is the structure of the prepolymer?
(b) How does addition of the triamine to the prepolymer result in cross-linking?
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a CICHCHCH Sio o CHCHCHO 8 HCCHCHO CH3 I CH3 CH3 CH3 ...View the full answer
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