I try to find the way to get a extend of pot life of PUR (polyurethane rigid). I use Polyol + Isocyanate (MDI) and my objetive is increase te time to work the the mixing. I use oil castor but I think don't work.
I hope anyone can help me or suggest some option.
Dear Bert Mlion, attached is a brochure where you can inspire from the different receipes presented. My Regards
Dear Bert Mlion, use a prepolymer, it is for this reason that PU prepolymer was developped. My Regards
Thanks for your reply Abdelkader BOUAZIZ Abdelkader, but this PU prepolymer is for resins? I use poliurethane for casting resins, not paint, adhesives or other appliclations.
Ok thanks Abdelkader BOUAZIZ I going to a research about prepolymers, thanks for your help.
Hi;
In general, the casting resin consists of a two-component system, resin and hardener, which harden after mixing by a chemical reaction. PU casting resins can, just like epoxy and polyester resins, be mixed with various additives as well as fillers or colorants. This gives them the desired properties. For example, it is possible to add an inhibitor to the resin to increase pot life, i.e. processing time.
With my best regards
Dear Bert Mlion, attached is a brochure where you can inspire from the different receipes presented. My Regards
Thanks for your report Doufnoune RACHIDA Rachida I know how consiste the process of castin resis but in particular I looking for components chemicals or product to add like inhibitor for to obtain mor pot life. I didn't find yet.
This link talk about:
Additives for Extending Pot Life of 2-Component Polyurethane Coatings
https://patents.google.com/patent/US20070117888A1/en
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