Behrang Izadkhah

5 Questions 5 Answers 0 Followers

Questions related from Behrang Izadkhah

What is the best method to measure heat stability of lamination adhesive?

We are using lamination adhesives for flexible packaging. There is a lot of adhesives for use. Also a significant difference there is between price of high heat stable adhesives and normal...

17 September 2020 8,364 0 View

What can lead to a cloudy prepolymer?

Prepolymer based on PPG and Pure MDI with about 30% of excess MDI. It changed from transparent to cloudy after 3-4 days ....

25 November 2017 9,196 1 View

What is the best procedure to remove excess monomeric TDI from reaction product?

To synthesize polyurethane prepolymer using TDI it is necessary to remove unreacted excess monomeric TDI to reach low free monomer prepolymer. What is the most simple way and which procedure is...

15 April 2017 7,737 0 View

What can be the reason for Cloudy Polyurethane Prepolymer?

I am working on formulation of adhesives based on Polyurethane chemistry. some of my formulations get cloudy after 24 hours. What can cause this problem?it should be mentioned that with 2,4 MDI...

04 December 2016 1,795 6 View

Role of monomers in polester based polyurethane adhesives

There is many polyurethane adhesives. 2k and 1k adhesives. Polyester polyols are most useful raw material for polyurethane adhesives. Many monomers can be used in this polyols including IPA, AA,...

01 January 1970 1,045 1 View