abstract |
A thermosetting polyurethane resin is disclosed which has the following physical properties:n n n (i) Shore A surface hardness is in the range of 50 to 85,n n n (ii) the bending rate is in the range of 8 to 80 MPa,n n n (iii) the elongation is in the range of 130 to 600% andn n n (vi) No melt mark after 1000 hours exposure in an atmosphere of 110 ° C. |