Level-4 Term-I 2017 exam on Dyeing & Printing-II (WPE 441) set by BUTEX for affiliated colleges. Covers disperse and reactive dyeing of polyester-cotton blends, sulphur dye chemistry, dyeing kinetics, sorption isotherms, and the Kubelka-Munk equation.
Level-4 Term-I, Final Exám-2017
Subject: Dyeing & Printing-II (Code: WPE 441)
Time: 3.0 Hrs. Full Marks: 105
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Explain the functions of dispersing agent used in dyeing with disperse dye.
(b) Write down the advantages & disadvantages of carrier.
(c) Describe the process of dyeing T/C fabric with Disperse/Reactive combination of dyes.
(d) What is meant by (i) solid dyeing (ii) Reserve dyeing (iii) cross dyeing (iv) Tone on effect?
[2+4+6.5+(1.25x4)=17.5]
2. (a) Write down the properties of sulphur dye.
(b) Mention the chemistry involved in sulphur dye during dyeing.
(c) Briefly discuss the general dyeing process of sulphur dye on cellulosic fabric with after treatment.
(d) Write down the problems of sulphur dye with causes and remedies.
[3+3+6.5+5=17.5]