Polymer Technology
Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser?

Esters of phthalic acid
Ethylene glycol
Tricresyl phosphate
Stearic acid estors

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Polymer Technology
Epoxy resins (i.e., epoxide polymers)

Are cross-linked polymers only
Use emulsion polymerisation methods
Are made by addition polymerisation reaction only
Contain an epoxy group ( ##### ) at the ends of the polymer

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