초록 ▼

The invention pertains to the polymerization of molecules having electrophilic and nucleophilic substituents on the same or different molecules, such polymerization mediated by aminopyridine catalysts which are substantially regenerated during polymerization. The invention also pertains to polymer p

The invention pertains to the polymerization of molecules having electrophilic and nucleophilic substituents on the same or different molecules, such polymerization mediated by aminopyridine catalysts which are substantially regenerated during polymerization. The invention also pertains to polymer products of such polymerization, to permselective membranes containing such polymers, and to processes and apparatus for separating fluids.

대표청구항 ▼

A method of making a semi-permeable polymeric film comprising the steps of imbibing into a microporous substrate a first fluid phase which comprises molecules having at least two nucleophilic substituents selected from the group consisting of primary amino substituents, secondary amino substituents,

A method of making a semi-permeable polymeric film comprising the steps of imbibing into a microporous substrate a first fluid phase which comprises molecules having at least two nucleophilic substituents selected from the group consisting of primary amino substituents, secondary amino substituents, primary phosphino substituents, secondary phosphino substituents, sulfhydryl substituents, hydroxyl substituents, and combinations thereof, and optionally one or more acid acceptors and thereafter contacting said substrate with a second fluid phase which includes molecules having at least two electrophilic substituents selected from the group consisting of carboxylic acid substituents, carboxylic acid halide substituents, sulfonic acid halide substituents, carboxylic acid anhydride substituents, haloformate substituents, isocyanate substituents, carboxylic acid ester substituents, and combinations thereof, wherein at least one of said first and second phases includes at least one catalyst for the polymerization of said molecules having nucleophilic substituents with said molecules having electrophilic substituents through said nucleophilic and electrophilic substituents said at least one catalyst being regenerated during polymerization, thereby resulting in polymerization of said molecules having at least two said nucleophilic substituents with said molecules having at least two said electrophilic substituents in the shape of a film at and/or near the interface between said substrate and said second phase. A method of making a semi-permeable polymeric film comprising the steps of imbibing into a microporous substrate a first fluid phase comprising molecules having at least two electrophilic substituents from the group consisting of carboxylic acid substituents, carboxylic acid halide substituents, sulfonic acid halide substituents, carboxylic acid anhydride substituents, haloformate substituents, isocyanate substituents, carboxylic acid ester substituents, and combinations thereof, and thereafter contacting said substrate with a second fluid phase which includes molecules having at least two nucleophilic substituents selected from the group consisting of primary amino substituents, secondary amino substituents, primary phosphino substituents, secondary phosphino substituents, sulfhydryl substituents, hydroxyl substituents, and combinations thereof, and optionally one or more acid acceptors, wherein at least one of said first and second phases includes at least one catalyst for the polymerization of said molecules having said electrophilic substituents with said molecules having said nucleophilic substituents through the reaction of said electrophilic substituents with said nucleophilic substituents said at least one catalyst being regenerated during polymerization, thereby resulting in polymerization of said molecules having at least two nucleophilic substituents with said molecules having at least two electrophilic substituents in the shape of a film at and/or near the interface between said substrate and said second phase. A process of preparing of a permselective membrane comprising the steps of: (a) imbibing into a microporous support an aqueous solution including piperazine and optionally one or more acid acceptors; (b) subsequently contacting said microporous support with a substantially water-immiscible organic solution including a mixture of trimesoyl chloride and isophthaloyl chloride; wherein said aqueous solution and/or said organic solution also includes one or more tertiary aminopyridines in a form catalytic for the polymerization of said piperazine with said chlorides.