Question: Would you prefer N,N-dimethyl-p-toluidine or Ethyl-4-dimethylamino benzoate as tertiary amine co-initiator with Camphorquinone?
Wuestion for polymer expert: Would you prefer N,N-dimethyl-p-toluidine or Ethyl-4-dimethylamino benzoate as tertiary amine co-initiator with Camphorquinone????
Fabrício Ogliari: EDAB of course!
Fabrício Ogliari: DMPT is less effective and have a great color instability.
Salvatore Sauro: Such useful information!!!!! Thanks Fabricio
Fabrício Mezzomo Collares: I agree
Victor Feitosa: EDAB is better!
Victor Feitosa: For some resins, what do you think about sulfinic acids Fabrício Ogliari ??
Fabrício Ogliari: Its commonly used for chemical polymerization based on acid proton donation, but its degree of conversion is very low.
Salvatore Sauro: Shall we use it as further co-initiator with cq and amine?
Fabrício Ogliari: I dont think so. I cant see a chemical mechanism that justify its use.
Salvatore Sauro: http://onlinelibrary.wiley.com/…/pol.1959…/abstract
The sulfinic acid-initiated polymerization of methyl…
onlinelibrary.wiley.com
Fabrício Ogliari: As you can see its necessary oxidizing agents.
Salvatore Sauro: Fabrício Ogliari in dual cure benzoyl peroxide systems?
Fabrício Ogliari: Yes! But acid enviroment can start the polymer formation too.
Fabrício Ogliari: You can see this mechanism in Prime&Bond activator