| 摘要 |
<p>Prodn. comprises: i). preparing a mixt. of at least 2 alkenyl ether terminated organic oxyalkylenes having different mol.wts.; ii), adding an organo-silicon cpd. having at least 2 hydride substits.; iii), heating and contacting the mixt. with a noble metal catalyst, iv), sepg. from the reaction mixt. a prod. contg. a mixt. of at least 3 silicon polyethers having different mol.wts. Also claimed are: A), oxyalkylenes having oxyethylene gps., oxypropylene gps. or both; an organo-silicon cpd. which is pref. an organocyclosilazane of formula (R(CH3)SiNH)z (R = 1-20C aliphatic; z = 3-6); B). alkyl ether terminated organic oxyalkylenes; and C), the additional step of: iv), sepg. ammonia from the reaction mixt. by heating.</p> |
