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POLYMER TECHNOLOGY

Polymer Technology
Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is

Ni
V₂O₅
Fe
Aluminium triethyl combined with titanium tetrachloride

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Polymer Technology
Thermoplastic resins usually

Can not be reclaimed from waste
Less brittle than thermosetting resins
Permanent setting resins
Remain hard as long as they are hot

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Polymer Technology
Thermosplastic materials

Do not soften on application of heat
Are heavily branched molecules
Are solvent insoluble
None of these

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Polymer Technology
Thiokol is nothing but

Engineering plastic
Polyamide fibre
Polysulphide rubber
Exponded polystyrene

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Polymer Technology
__________ practically possess no elasticity.

Epoxy resin
Spandex fibre
Vulcanite or ebonite
Polysulphide rubber

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