公开(公告)号：US3903127A

公开(公告)日：1975-09-02

申请号：US44177874

申请日：1974-02-12

Applicant: BAYER AG

Inventor： WAGNER KUNO ,  EIMER JOHANNES ,  ZIRNER JOACHIM ,  RAAB RAINER ,  LIEBSCH DIETRICH

IPC: C08G18/00 ,  C07C67/00 ,  C07C239/00 ,  C07C273/18 ,  C07C275/62 ,  C08G18/78 ,  C07C118/00 ,  C07C119/042

CPC classification number: C07C273/1863 ,  C07C273/1872 ,  C08G18/7831 ,  C07C275/62

Abstract: Comparatively low viscosity biuret containing polyisocyanates are produced by reacting diisocyanates and biuretizing agents in proportions corresponding to a molar ratio of diisocyanate to monofunctional biuretizing agent of at least 11 : 1.