Dipak Ghosh

3 Questions 2 Answers 0 Followers

Questions related from Dipak Ghosh

Curing of Novolak resin with hexamine develops yellow color. I believe it is due to azo linkage -C-N=N- C- What is the reaction mechanism?

Also, I will appreciate whole curing mechanism of Novolak with Hexamine

15 June 2024 10,014 0 View

Ortho linked Novolak ?

Ortho linked Novolak is known for faster curing than randomly linked Novolak .I need to know process for synthesis of Ortho linked Novolak with Phenol :Formalin mole ratio ,catalyst composition...

07 November 2022 940 0 View

Effect of humidity on cold box cores

1.I believe, humidity has got effect not only on storage stability of cores but also on immediate strength and 2.At RH of 80% ,cores produced at 30 degree centigrade goes more deterioration than...

01 January 1970 3,015 0 View