Podcast
Questions and Answers
What must vat dyes be reduced to before being applied to cotton or rayon fiber?
What must vat dyes be reduced to before being applied to cotton or rayon fiber?
What fixes the vat dye strongly on the fiber, resulting in excellent wash-fastness and light-fastness?
What fixes the vat dye strongly on the fiber, resulting in excellent wash-fastness and light-fastness?
What is the main use of vat dyes in terms of fiber dyeing?
What is the main use of vat dyes in terms of fiber dyeing?
What is the washing fastness rating of vat dye?
What is the washing fastness rating of vat dye?
Signup and view all the answers
What is the classification of vat dyes according to chemical structures?
What is the classification of vat dyes according to chemical structures?
Signup and view all the answers
Vat dyes are soluble in water.
Vat dyes are soluble in water.
Signup and view all the answers
Vat dyes must be reduced to the leuco form before being applied to cotton or rayon fiber.
Vat dyes must be reduced to the leuco form before being applied to cotton or rayon fiber.
Signup and view all the answers
Rubbing fastness of vat dyes is good.
Rubbing fastness of vat dyes is good.
Signup and view all the answers
Vat dyes are inexpensive in price.
Vat dyes are inexpensive in price.
Signup and view all the answers
Vat dyes are mainly used for protein fiber dyeing.
Vat dyes are mainly used for protein fiber dyeing.
Signup and view all the answers
