Sun glasses, computer cases and printing substrate can be done by using _________
(a) Polyurethanes
(b) Poly carbonates
(c) Poly vinyl cyanide
(d) Polyethylene
The question was asked by my college professor while I was bunking the class.
I'd like to ask this question from Preparation, Properties and Applications of Some Compounds topic in division High Polymers and Plastics of Applied Chemistry