abstract |
The subject of the present invention is the formula 2, (Where R 1 is H, methyl or ethyl, R 2 is C 1-to C 4 -alkyl, A is a C 2-to C 4 -alkylene group, m is a number from 1 to 400, n means 1,2,3,4 or 5. ), Its production process and its use for the production of polyurethane prepolymers. |