Specialty Pigments & Recent development in Pigment — Winter 2020

Write down the special features of special effect pigment.

Explain the following terms:4

Lightness flop (ii) Colour flop

Explain the optical properties of following pigment with suitable diagram: A) Conventional pigment; B) Metal effect pigment; C) Natural pearl; D) Pearl luster pigment.

Write a note on: Mica pigment

Discuss the two main types of underwater antifouling coatings.

Explain the Insoluble matrix based on antifouling paint formulation.

Define the following:

Cluster (ii) Colloids (iii) Nanoparticle

How do you synthesis of TiO by sol gel method?

Explain the synthesis of silver nanoparticles by reduction by tri-sodium citrate7 and sodium borohydride.

Write down the two main reasons with respect to the properties of materials can be different at the Nano scale.

Elaborate the synthesis of silver nanoparticles by using laser ablation method.

Explain the properties and applications of Nano pigment in detail.

Write down the various ways of anticorrosive pigments can affect the performance of protective coatings.

Write down the importance of anticorrosive pigments.

Explain the following mechanism of anticorrosive pigment:7

Active pigment (ii) Barrier pigment (iii) Sacrificial Pigment

Give the application methods of phosphorescent pigments.

Write down the characteristics and applications of pearlescent pigment.

Explain the micaceous iron oxide pigment in details.

Write down the importance of anticorrosive pigment.

Discuss the Benefits of High- and Low-Strength Colorants.

Write a note on following: (i) Biocides (ii) Micro fouling

Write a note on: Ultrasonic cavitation

Discuss the concept of thermochromism with suitable example

What is meant by Pigment Tinters? Discuss the formulation of Pigment Tinters7 with role of each ingredient.