This is an image for Classic PU Patent of the Month: Non-Isocyanate Polyhydroxyurethanes by Dow (1957).
Preparation of polyhydroxyurethanes according to the invention
This is an image for Classic PU Patent of the Month: Non-Isocyanate Polyhydroxyurethanes by Dow (1957).
Preparation of polyhydroxyurethanes according to the invention