This invention relates to products H made by reaction of a cyclic alkyleneurea U, at least one multifunctional aldehyde A2, and at least one of (a) an aminoplast former M that is not the same as the cyclic alkyleneurea U, and (b) a monofunctional aldehyde A1, which product H is optionally etherified by reaction of at least a part of the hydroxyl groups formed by addition reaction of N—H groups and aldehyde groups, with an alcohol having from one to ten carbon atoms, and wherein glyoxal is present in the at least one multifunctional aldehyde A2, to processes for their preparation, and to a method of use thereof in coating compositions.
本发明涉及由环亚烷基脲 U、至少一种多功能醛 A2 和 (a) 与环亚烷基脲 U 不同的氨基原基 M 和 (b) 单功能醛 A1 中的至少一种反应制得的产品 H、其中产物 H 可选择通过 N-H 基团和醛基团加成反应形成的至少部分羟基与具有 1 至 10 个碳原子的醇反应而被醚化,其中乙二醛存在于至少一种多功能醛 A2 中,以及它们的制备工艺和在涂料组合物中的使用方法。
Amine-based porous polymer for selective carbon dioxide capture
申请人:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
公开号:US10889678B2
公开(公告)日:2021-01-12
An amine-functionalized, crosslinked porous copolymer can be synthesized by linking 1,4-benzenediamine and pyrrole with p-formaldehyde in the presence of concentrated hydrochloric acid catalyst. The polymer is permanently microporous, with a BET surface area of 250 to 350 m2/g. Due to the high concentration of polar amines within its backbone, the polymer exhibits a CO2 uptake of 17.5 to 30 cm3/g at 298 K and 1 bar, but demonstrated a remarkably high selectivity for CO2 over N2 at 298 K. Dynamic breakthrough experiments indicate that this material is an effective adsorbent for selectively separating CO2 from a dry and wet gas mixture containing N2 for over 45 cycles without significant loss of performance. Furthermore, the polymer can be regenerated at room temperature after each cycle by a simple N2 flow.