| 摘要 |
1,126,106. Carbonate-isocyanates. FARBENFABRIKEN BAYER A.G. 14 June, 1966 [15 June, 1965], No. 26428/66. Heading C2C. The invention comprises mixed carbonic acid esters of polyhydroxy compounds and organic hydroxy isocyanates; they are prepared by reacting the polyhydroxy compounds with chloroformic esters containing -NCO groups in presence of a binding agent for HCl.
|
