7-Oxabicyclo(4.1.0)heptane-3-carboxylic acid, 7-oxabicyclo(4.1.0)hept-3-ylmethyl ester, polymer with polymethylenepolyphenylene isocyanate and 1,2,3-propanetriol 71463-63-3 Polymethylene polyphenylene isocyanate, 7-oxabicyclo(4.1.0)hept-3-ylmethyl 7-oxabicyclo(4.1.0)heptane-3-carboxylate, 1,2,3-propanetriol polymer