Question

‘Koroseal’ is a long, chain polymer. When mixed with plasticizers, it forms an excellent plastic. Which one of the following is not the use of it?
(A) For water-proofing
(B) Lining material for tanks
(C) In wire and cable insulation
(D) For sun-shading

Answer 1

It is the polymer formed of poly vinyl chloride.
- The plasticized polymer will be more flexible and less flexible than the conventional polymer.

Complete step by step answer:
- So in the question it is given that the long polymer chain which is called as Koroseal which is mixed with the plasticizers forms excellent plastic and from the given options we have to find the odd one out i.e. for which purpose the koroseal polymer is not used for.
First let’s talk about what are polymers, monomers, plasticizers etc.
- The polymers are the long branched chains, formed by the combination of repeated addition of small basic units. The polymer is combined by various polymerization processes like addition polymerization, condensation polymerization etc.
- The monomers are the basic units which combine to form the long polymer chain.
Now let’s talk about plasticizer, these are the substances which add on to the polymers enhance the various properties of polymers like flexibility, decrease volatility, high permanence, high efficiency and make the polymer soft. The plasticizers are mainly added to polymers so that by altering the properties of the conventional polymers we could extend its industrial application.
- The Koroseal is the trade name given to the polymers mainly made of vinyl halides. Vinyl halides are those organic molecules which have the unit as given below:

- The koroseal polymers are generally made of vinyl chloride. The polymer undergoes the plasticization process a new type of plastic is formed and will have the favorable properties for the industrial purposes.
- The Koroseal are generally heat resistant electricity and corrosion resistant even if they are exposed to light for long duration. And they have water proof properties because of which they are used in wall paints, as coating in wires and cables and also as lining in water tanks.
The correct answer is option “D” .

Note: Plasticization is a process in which we add plasticizers into the polymers during the process of polymerization by which the properties of the polymers will be altered.
The ester plasticizers are generally used for the commercial purposes since they are cost effective.
- Phthalate esters like diisononyl phthalate (DINP), di-(2-ethylhexyl) phthalate (DEHP) are the plasticizers generally used.