Chemistry Reference
In-Depth Information
5. Describe with chemical equations the preparations of nylon 7 and 9. What are the shortcomings
of the process used in Russia? Explain.
6. Describe with chemical equations the synthetic route to nylons 8 and 12.
7. How is nylon 11 produced from methyl ricinoleate. Show all the steps.
8. Describe with chemical equations the commercial synthesis of Trogamid T?
9. What are fatty polyamides and how are they formed?
10. What is nylon 6T and how is it produced?
11. Discuss the chemistry of preparation of fully aromatic polyamides, showing chemical structures.
12. Explain with an example how the Heck reaction can be extended to form aromatic polyamides.
Section 7.4
1. Discuss the chemistry of aromatic polyamide-imides and aromatic polyester-imides. Give examples.
Section 7.5
1. What are the most common commercial procedures for preparations of aromatic polyimides?
Describe with illustrations.
2. What dianhydrides are most commonly used commercially in preparations of polyimides?
3. Illustrate with chemical reactions how polyimides can be formed from aromatic diisocyanates and
aromatic dianhydrides. Do the same for ketimines and
N
0
-bis(trimethylsilyl) compounds.
4. How can polyimides be formed from reactions of diimides with dihalides? Show the chemical
reactions.
5. Show reactions for formation of polyimides from reactions of sulfur halides with unsaturated
diimides and from diepoxides with diimides.
6. Illustrate and explain the photochemical reactions of bis maleimides with benzene to form
polyimides.
7. Illustrate how polyimides can form by Diels-Alder reactions.
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Section 7.6
1. Discuss and illustrate with chemical equations the formation of poly(phenylene oxide) by oxida-
tive coupling reaction of 2,6-disubstituted phenols.
2. What is the commercial material called Noryl. Explain.
3. What are phenoxy resins. Describe how they are prepared and explain how they are used.
Section 7.7
1. Discuss polyacetals and describe the polyacetals available commercially today.
