Problem 15 - 43 Years JEE ADVANCED (1978-2020) + JEE MAIN Chapterwise & Topicwise Solved Papers Chemistry

Question

Which polymer is used in the manufacture of paints and lacquers? [Main 2015] (a) Polypropene (b) Polyvinyl chloride (c) Bakelite (d) Glyptal

Step-by-Step Solution

Answer

Glyptal is used in the manufacture of paints and lacquers.

Step 1: Identify Key Terms

First, understand the terms used in the question: we are asked to identify a polymer suitable for the manufacture of paints and lacquers. Knowing that paints and lacquers require certain film-forming and adhesive properties can guide us toward potential polymers typically used in these applications.

Step 2: Evaluate Options

Next, let's evaluate the given options one by one in terms of their known applications.

Step 3: Analyze Polypropene

Polypropene, or polypropylene, is known for its use in packaging, textiles, and various plastic parts, but it is not typically used in paints or lacquers.

Step 4: Consider Polyvinyl Chloride

Polyvinyl chloride (PVC) is primarily used in construction for pipes, wires, and cable insulation. It is not commonly used in paint or lacquer formulations.

Step 5: Examine Bakelite

Bakelite is a thermosetting plastic, commonly used in electrical insulators and early plastics due to its insulating properties and heat resistance. It does not lend itself to paint or lacquer applications.

Step 6: Verify Glyptal

Glyptal is known for being used in the production of paints and lacquers due to its excellent adhesion, film-forming properties, and durability, which make it suitable for such applications.

Step 7: Select Glyptal

Considering the applications in the manufacture of paints and lacquers, Glyptal is the polymer that meets the necessary properties required for these products.

Key Concepts

Glyptal applications

Glyptal is a versatile polymer, primarily employed in the manufacture of paints and lacquers. It possesses remarkable film-forming properties, making it highly effective in creating smooth and durable coatings. This makes Glyptal an ideal component in the production of industrial and protective paints that need to withstand various environmental conditions. The adhesive nature of Glyptal ensures strong bonding with surfaces, which is crucial for long-lasting paint and lacquer applications.

In addition to its predominant use in coatings, Glyptal is also utilized in the electrical industry. Its insulating properties make it suitable for use in electrical appliances and components, providing both electrical insulation and protection. This dual applicability exemplifies the polymer's versatility and effectiveness in both aesthetic and functional capacities.

properties of polymers

Polymers like Glyptal are composed of long, repeating molecular chains that impart unique properties beneficial for various applications. Glyptal, as a polymer, exhibits notable characteristics such as:

• Adhesion: Glyptal shows excellent adhesive properties which are crucial for paints to adhere firmly to surfaces.
• Film-forming ability: This feature ensures the creation of smooth, uniform coatings essential for aesthetic and protective purposes.
• Durability: Glyptal-based polymers are known for their resistance to wear and tear, making them suitable for long-term usage.
• Thermal stability: Their ability to withstand fluctuations in temperature without degrading is particularly advantageous in industrial applications.
• Electrical insulation: This property is vital for applications in the electrical sector, keeping components protected from electrical currents.

Understanding these properties helps in selecting the right polymer for specific industrial needs, ensuring efficiency and effectiveness in their applications.

polymer selection in industry

Selecting the appropriate polymer for industrial applications involves evaluating the specific requirements of the end-use product. In the paint and lacquer industry, polymers must offer particular characteristics to ensure performance. This includes robustness, adherence to surfaces, and resistance to environmental factors like moisture and temperature changes.

The selection process considers the following factors:

• Purpose of Application: What is the intended function of the polymer? In paints, properties like film-forming and adhesion are prioritized.
• Environmental Resistance: Polymers used outdoors must resist UV light, moisture, and extreme temperatures.
• Durability and Reliability: Long-life expectancy of the final product, particularly important in coatings.
• Cost-effectiveness: Is the polymer economically viable for large-scale production?

The meticulous evaluation ensures that the selected polymer not only meets but also exceeds the necessary specifications, which is why Glyptal is often the polymer of choice for paints and lacquers. Its ability to meet diverse industrial demands illustrates the strategic importance of polymer selection in optimized manufacturing processes.