Refer the attached book (and references  therein). It'll help your need

Dear Dr.Muthu

Thanks for your helpful book.

Regards

Maziar

Check the internet site www.polyurethanes.de and the papers provided by K. Klockemann of Nitroil Europe or Performance Chemicals, they are providing such coating material or www. synsolv.com. Further, you may check the patents under the names mentioned.

You have to define against which matter the materials are to be resistant, only with such information we can provide detailed information.

Please, provide information to what resistance you are aiming. There are so many ways to produce polyurethane coatings, e. g. solvent containing, high solids, one component, two component systems, solvenfree systems, aqueous dispersions etc. If you want detailed information you have to define at least the type of application and the type of resistance.

Polyurea systems are usually two component systems based on isocyanate prepolymers (their design determines properties) and di- or polyamines. By the choice of the composition of the prepolymer and the type of amine you determine the reaction and tack free times and properties. Another way is to you carbamates and perform a trans-amidation with amines in substance or solution. Again, the type of application and desired resistance determine the type of raw material.

If you want further information on commercial products go to www.nitroil-polyurea.com