专利号:US-6133473-A 优先权日:1998-06-25 标 题 :Synthesis of carbamate compounds 发明人:BERRIER JOHN VINCENT 权利人:ROHM & HAAS 摘要:Disclosed is a method for the preparation of carbamate compounds substantially free of by-products; the carbamate compounds being prepared by reacting an isocyanate with a hydroxylated compound in the presence of certain catalysts that increase the rate of carbamylation while decreasing the rate of by-product formation.
专利号:KR-20000006113-A 优先权日:1998-06-25 标题 :Improved synthesis of carbamate compounds