公开(公告)号：US3591590A

公开(公告)日：1971-07-06

申请号：US3591590D

申请日：1970-03-09

Applicant: CIBA LTD

Inventor： HAUG THEOBALD ,  BATZER HANS

IPC: C07D233/72 ,  C07D235/02 ,  C07D239/22 ,  C08G18/00 ,  C08G18/78 ,  C08G18/79 ,  C09D175/00 ,  C07D49/32 ,  C07D51/30

CPC classification number: C07D235/02 ,  C07D233/72 ,  C07D239/22 ,  C08G18/7887

Abstract: NEW 1,3-DI-($-ISOCYANATOPROPYL)-HYDANTOINS AND -DIHYURACILS, FOR EXAMPLE 1,3-DI-($-ISOCYANATOPROPYL)-5,5-DIMETHYLHYDANTOIN OR 1,3-DI-($-ISOCYANATOPROPYL)5,5-DIMETHYL-5,6-DIHYDROURACIL AND THEIR USE FOR THE MANUFACTURE OF POLYURETHANES BY REACTION WITH POLYHYDROXYL COMPOUNDS. THE NEW DIISOCYANATES ARE COMPLETELY ODOURLESS; IRRITATION OF THE MUCUS MEMBRANES WAS NOT DETECTABLE; THEY ARE THEREFORE PREDERABLY USED IN THE LAQUER FIELD. THE NEW DIISOCYANATES REACT SIGNIFICANTLY MORE RAPIDLY WITH PRIMARY ALCOHOLS THAN DO ALIPHATIC DIISOCYANATES, FOR EXAMPLE 1,6-HEXAMETHYLENEDIISOCYANATE, AND ON THE OTHER HAND MORE SLOWLY THAN AROMATIC DIISOCYANATES, FOR EXAMPLE, 1,4-TOLUYLENEDIISOCYANATE.