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Chapter 30: Question 30.51 (page 1228)

What epoxy resin is formed by the following reaction sequence?

Short Answer

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Answer

Formation of prepolymer and epoxy resin

Step by step solution

01

Epoxy resins

The polymer molecules consisting epoxide groups are commonly called by the name polyepoxides. These polymers mainly consist of oxirane rings as the monomer units. There may be other substituents and alkyl chains.

02

Formation of a prepolymer

The hydroxyl group of the first reactant and the chlorine atom of the second reactant are replaced and the oxygen atom helps in connecting both the molecules. The monomer units keep on repeating.

Formation of a prepolymer

03

Reaction of the prepolymer with ethane-1,2-diamine

The reaction of obtained prepolymer with ethane-1,2-diamine results in the connection of two molecules of the prepolymer. The group becomes NH and it helps in connecting two prepolymers. The reaction is shown below.

Formation of epoxy resin

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Most popular questions from this chapter

What polymer is formed by the anionic polymerization of each monomer?

(a.)

(b.)

What polymer is formed by the radical polymerization of each monomer?

(a.)

(b.)

Draw the alternating copolymer formed from each set of monomers.

(a.)and

(b.)

and

Which method of ionic polymerization-cationic or anionic-is preferred for each monomer? Explain your choices.

(a.)

(b.)

(c.)

(d.)

Draw the mechanism for the radical polymerization of vinyl acetate (CH2=CHOCOCH3) using(CH3)3CO-OC(CH3)3 as the initiator.
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