相似化合物
1427523-25-8 173069-45-9 365996-04-9上下游产品
CAS号98383-10-9 (6CI,9CI)-2-甲基-... | CAS号70298-89-4 4-(2,2,2-三甲基乙酰胺)吡啶 | CAS号100724-20-7 (3-mercapto-[4]... | CAS号98383-10-9 (6CI,9CI)-2-甲基-...📜(3-Mercapto-[4]Pyridyl)-Carbamic Acid Benzyl Ester置于盐酸,溶剂黄146体系中,化学反应生成 4-氨基-3-巯基吡啶
参考文献:Takahashi; Ueda,Pharmaceutical Bulletin,1956,Vol. 4,P. 216,219
标题:Takahashi; Ueda,Pharmaceutical Bulletin,1956,Vol. 4,P. 216,219
专利信息
专利号:US-9670305-B2
优先权日:2012-04-16
标 题 :Polyurethane dispersant and the method for its preparation
发明人:WANG ZHIJUN
权利人:WANG ZHIJUN; AFCONA CHEMICALS (HAIMEN) CO LTD
摘要:The present invention is related to a polyurethane dispersant and a preparation method thereof. The polyurethane dispersant is terminated by a nitrogen-containing heterocyclic compound during synthesis. The nitrogen-containing heterocyclic compound is prepared by subjecting anhydride and a compound containing a primary amine and a secondary amine or a hydroxyl or mercapto group to dehydration condensation. The condensed product is the nitrogen-containing heterocyclic compound, containing a reactive hydrogen. The structural formula of the compound containing the primary amine and the secondary amine or hydroxyl or mercapto group is shown as follows: n nwherein n=1 to 5, and preferably 2 to 4, R 1 and R 2 are respectively alkyls containing 1 to 8 carbons, R 1 and R 2 are independent of each other or connected by a chemical bond to form one or more saturated or unsaturated 4-member to 8-member rings, and X represents N, O, or S.