Covalently linked linear polyethylenimine (PEI) clusters are provided that change conformation depending upon changes in counterion concentrations. The structures may be used for the storage, delivery, and/or transport of substances.

The present application is directed to processes for removing carbon dioxide (CO.sub.2) from low CO.sub.2 concentration gaseous streams. The process comprises contacting the gaseous stream with a hydrogel for absorbing at least some CO.sub.2 from the gaseous stream. The hydrogel comprises a cross-linked hydrophilic polymer comprising a hydrophilic polymer cross-linked with a cross-linking agent. Processes for preparing the hydrogel, types of hydrogels, using the hydrogel to remove CO.sub.2 from gaseous streams, and regenerating the hydrogel to recover absorbed CO.sub.2 from the hydrogel are also disclosed.

A gas barrier polymer is formed by heat-curing a mixture including polycarboxylic acid and a polyamine compound, in which, in an infrared absorption spectrum, when a straight line connecting a measurement point at 1493 cm.sup.−1 and a measurement point at 1780 cm.sup.−1 is set as a baseline, an absorption intensity at 1660 cm.sup.−1 is set as I(1660), and an absorption intensity at 1625 cm.sup.−1 is set as I(1625), R represented by Equation (1) is greater than 1.
R=I(1660)/I(1625)−{−0.65×(total amine/COOH)+0.4225}  (1)

A draw solute for forward osmosis membrane process, comprising an addition polymer obtained by addition polymerization of an alkylene oxide having 2 to 10 carbon atoms to an amine compound.

Compositions include a compound preparable by reaction of components comprising an optionally crosslinked polyethylenimine and at least one an amine-reactive hydrolyzable organosilane represented by the formula R—Z—SiY.sub.3. R represents an amine-reactive group containing 1 to 18 carbon atoms; Z represents a divalent organic group containing 1 to 8 carbon atoms; and each Y independently represents a hydrolyzable group. Methods of using the compositions to make articles, and articles produces thereby are also disclosed. A composition comprising an intimate mixture of a crosslinked polyethylenimine and a polymeric binder material, and a method of making it is also disclosed.

The present invention relates to an n-type conductive composition comprising a rigid conjugated polymer having a dihedral angle from 0° to 20° and an n-type polymeric cation. Further, the present invention relates to an n-type conductive ink comprising such a composition.

Disclosed are compositions for transfecting a nucleic acid molecule into a cell and their applications. Specifically, this relates to a composition suitable for transfecting a nucleic acid molecule into a cell, preferably a eukaryotic cell, including (i) at least one compound of general formula (II) or a tautomer, mesomer, racemate, enantiomer, diastereomer, or mixture thereof, or an acceptable salt thereof, and (ii) an acceptable excipient, buffering agent, cell culture medium, or transfection medium, wherein Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, Z.sup.3, Z.sup.4, Z.sup.5, Z.sup.6, Z.sup.7, X.sub.1, X.sub.2, R.sub.3, P.sup.+, R, T, U and V are as defined in the description. Also disclosed are uses of the composition and to a method for in vitro or ex vivo transfection of live cells.

Disclosed are compositions for transfecting a nucleic acid molecule into a cell and their applications. Specifically, this relates to a composition suitable for transfecting a nucleic acid molecule into a cell, preferably a eukaryotic cell, including (i) at least one compound of general formula (I), preferably of general formula (III), or a tautomer, mesomer, racemate, enantiomer, diastereomer, or mixture thereof, or an acceptable salt thereof, and (ii) an acceptable excipient, buffering agent, cell culture medium, or transfection medium, wherein Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, Z.sup.3, X.sub.1, X.sub.2, R.sub.3, P.sup.+, R and V are as defined in the description. Also disclosed are uses of the composition and to a method for in vitro or ex vivo transfection of live cells.

The present invention provides a coating composition comprising one or more polyamide resins and one or more polyethylenimine (PEI) resins, preferably dissolved in one or more solvents. When used as a primer, the coating composition of the present invention improves adhesion of subsequently printed inks and coatings to the substrate. Advantageously, the coating composition of the present invention used as a primer improves adhesion of inks and coatings to metallized film substrates.

The present disclosure provides for improved binder compositions comprising an amine component, as well as methods for manufacturing articles and collections of matter comprising the disclosed binder compositions.