CONTROLLED FUNCTIONAL DENSITY POLYAMINES AND METHOD FOR PREPARATION THEREOF

摘要

A process for preparing a polyamine containing a controlled amount of pendant tertiary amine groups and a controlled amount of pendant secondary amine or different tertiary amine groups and reactive carbon-carbon double bonds comprising reductively aminating essentially all aldehyde groups in a polyaldehyde containing a controlled amount of pendant aldehyde groups and reactive carbon-carbon double bonds with a first secondary amine to produce a poly(tertiary amine), hydroformylating the poly(tertiary amine) having a controlled amount of pendant aldehyde groups, and reductively aminating the poly(tertiary amine) with pendant aldehyde groups with a primary amine or a second secondary amine. In another embodiment for preparing the polyamines of the invention, the polyaldehyde is reductively aminated with an amount of a first secondary amine to reductively aminate a controlled amount of the aldehyde groups and further reductively aminated with a primary amine or a second secondary amine to reductively aminate essentially all the remaining aldehyde groups. In a further embodiment for preparing the polyamines of the invention containing a controlled amount of pendant tertiary and secondary amine groups, the polyaldehyde is reductively aminated with a mixture of a secondary amine and a primary amine in relative amounts necessary to produce a polyamine having the desired controlled amount of pendant tertiary amine and secondary amine groups.