Polymer Technology
Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are

0°C and 3 kgf/cm²
- 20°C and 1 kgf/cm²
5°C and 1 kgf/cm²
0°C and 1 kgf/cm²

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Polymer Technology
Identify the group in which all the polymers mentioned can be used to make fibres.

Butadiene copolymers, Polyamides, Urea aldehyde
Cellulose derivatives, Polyisoprene, Polyethylene
Cellulose derivatives, Polyamides, Polyurathane
Polypropylene, Poly vinyl chloride, Silicon

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