What are the ingredients in two-part pourable urethane foam?

[CosmicVoyager]

Greetings,

Does anyone know what the ingredients in two-part pourable urethane foam are? What is in Part A and Part B?

Thanks

 

[Borek]

Quick googling suggests that there are many possibilities.

 

[chemisttree]

In general that would be a multifunctional isocyanate (at least di-isocyanate but also tri-isocyanate as well) and a multifunctional alcohol. Water is added to the alcohol component to provide the foam from the decarboxylation reaction between water and the isocyanate.

http://web.mst.edu/~wlf/chem381/chap34.html