| 摘要 |
A process for producing polyurethane elastomers in which a polyester diol is formed with a molecular weight between 3000 and 30,000 and is then reacted with a diisocyanate. <IMAGE> wherein A is D, -(CH2) mO-n or <IMAGE> B is -(CH2-or -CH= CH- and D is a bivalent residue formed by removing the hydroxyl group from one of the following diols: |
