Please see the attached.
Methylene diphenyl di-isocyanate (MDI) is used as an adhesive ----- it is often cross-linked with maleic anhydride when in the presence of water.
We are asked to explain and detail out the structural components of this reaction.
I have a theory 1A and theory 1B ----- my guess is that the maleic anhydride hydrolizes in water to create maleic acid. Then I think one of 2 things happens: a) the maleic acid attacks the CH2 functional group in the diagram attached......or b), it attacks the more reactive isocyanate (NCO) functional group in the diagram attached.
Can sometime please take a stab at this reaction ---- so I need an explanation and then a diagram of the by-product reaction! I really need your help!© BrainMass Inc. brainmass.com December 15, 2020, 8:17 pm ad1c9bdddf
Here is the answer. If you have any doubts or if you need more information, please let me know. I will update it.
Dr. Anandhi Ray
1. Influence of Carboxylic Anhydrides on Selected Mechanical Properties of Heat-cured Resin
J DENT RES 1991 70: 1537
A. Peutzfeldt and E. Asmussen
The online version of this article ...
This solution helps solve various organic chemistry problems.