Which of the following has glycol as in important constituent?

Options

A. Dacron
B. Acrilian
C. Teflon
D. Visocose

Answer

To solve the question "Which of the following has glycol as an important constituent?" we will analyze each option provided:

1. **Tecron (Dacron)**:
- Tecron, also known as Dacron, is a polymer made from ethylene glycol and terephthalic acid.
- The reaction involves heating ethylene glycol (HO-CH2-CH2-OH) with terephthalic acid (C6H4(COOH)2) in the presence of a catalyst at a temperature range of 420-460 K.
- During this process, water is eliminated, and the polymer chain forms, confirming that ethylene glycol is indeed an important constituent of Dacron.

2. **Acrylon**:
- Acrylon is a polymer derived from vinyl cyanide (acrylonitrile) through addition polymerization, typically using a peroxide catalyst.
- The structure of acrylonitrile does not include ethylene glycol, so this option does not contain glycol as a constituent.

3. **Teflon**:
- Teflon is an addition polymer of tetrafluoroethene (CF2=CF2).
- The polymerization process involves high pressure and heat, and it does not involve glycol in its structure. Thus, Teflon does not have glycol as an important constituent.

4. **Viscose**:
- Viscose is derived from cellulose, which is a polysaccharide made up of glucose units.
- While cellulose is a carbohydrate, it does not contain glycol as a significant component.

Based on the analysis above, the only option that contains glycol as an important constituent is **Tecron (Dacron)**.

**Final Answer**: Tecron (Dacron) has glycol as an important constituent.