2,5-Furandione, 3-(4,6-dimethyl-2-heptenyl)dihydro-, polymer with alpha-(oxiranylmethyl)-omega-(oxiranylmethoxy)poly(oxy(methyl-1,2-ethanediyl)) and 3-oxiranyl-7-oxabicyclo(4.1.0)heptane 52368-54-4 66796-62-1 69280-43-9 Spurr Spurr resin