摘要:
Provided is a method of treating a vinyl aromatic resin (I) comprising (a) bringing the vinyl aromatic resin (I) into contact with an alcohol, and maintaining the contact between the vinyl aromatic resin (I) and the alcohol for 10 minutes or more, and (b) bringing the vinyl aromatic resin into contact with a base. wherein the vinyl aromatic resin (I), prior to steps (a) and (b), has benzyl chloride groups, benzyl alcohol groups, and methylene bridge groups.
摘要:
Pharmaceutical compositions for and methods of treating an animal, including a human, and methods of preparing such compositions. The pharmaceutical compositions contain nonabsorbable compositions and may be used, for example, to treat diseases or other metabolic conditions in which removal of protons, the conjugate base of a strong acid and/or a strong acid from the gastrointestinal tract would provide physiological benefits such as normalizing serum bicarbonate concentrations and the blood pH in an animal, including a human.
摘要:
Die vorliegende Anmeldung betrifft neue monodisperse, gelförmige oder makroporöse Picolylaminharze auf Basis wenigstens einer monovinylaromatischen Verbindung und wenigstens einer polyvinylaromatischen Verbindung und/oder einer (Meth)acrylverbindung die als funktionelle Gruppe tertiäre Stickstoffatome in Strukturen der allgemeinen Formel (I) enthalten worin R 1 für einen gegebenenfalls substituierten Rest der Reihe Picolyl, Methylchinolin oder Methylpiperidin steht, R 2 für einen Rest -(CH 2 ) q -COOR 3 steht, R 3 für einen Rest der Reihe H, Na oder K steht, m für eine ganze Zahl von 1 bis 4 steht, n und p jeweils unabhängig voneinander für Zahlen zwischen 0,1 und 1,9 stehen und die Summe von n und p gleich 2 ist, q für eine ganze Zahl von 1 bis 5 steht und M für die Polymermatrix steht, ein Verfahren zu ihrer Herstellung sowie deren Verwendungen, insbesondere die Verwendung in der Hydrometallurgie und Galvanik.
摘要:
The present invention is directed to copolymers that include a plurality of constitutional units that correspond to cationically polymerizable monomer species and a second polymer block that comprises a plurality of constitutional units that correspond to an anionically polymerizable vinylpyridine, e.g., 2-vmylpyridine, and methods for making the same. Such copolymers can also include a linking moiety, e.g., a Formula (I) group, a Formula (II) group, or any combinations thereof.
摘要:
The invention relates to a method for producing 2-alkyl polyisobutenylphenols and their Mannich adducts, to compositions that are obtained according to said method and to the use of said compositions.
摘要:
Die Erfindung betrifft Polymere, welche einen resistiven Hystereseeffekt zeigen. Die Polymere umfassen ein Polymerrückgrat, an welches seitenständig Pentaarylcyclopentadienylreste gebunden sind. Mit Hilfe des Polymers lässt sich ein resistives Speicherelement herstellen, welches als Speichermedium das Polymer enthält. Durch Anlegen einer Spannung lässt sich das Speicherelement zwischen einem nicht leitendem und einem leitendem Zustand schalten.
摘要:
Polyalkyl hydroxyaromatics may be prepared from polyalkylenes and hydroxyaromatics in the presence of an acid catalyst and an organic solvent having a boiling point range with an initial boiling point value of below or about the boiling point of the selected hydroxyaromatic reactants and final boiling point of above or equal to about the boiling point of alkylhydroxyaromatic by-product of the reaction. Using this method, accumulation of undesirable alkylhydroxyaromatic by-product/s in a reaction vessel may be minimized, and/or viscosity of polyalkyl hydroxyaromatic product reduced, allowing for increased ease of transfer and transportation.
摘要:
The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The composition includes ethylene monomer and a mixture of hydrocarbon-based molecules. Each hydrocarbon-based molecule includes three or more internal alkene groups.
摘要:
Embodiments of the present disclosure describe a method of removing an end group from a polymer comprising contacting a polymer having a thiocarbonylthio end group, or a solution containing such a polymer, with an excess of a borane compound in the presence of oxygen. Embodiments of the present disclosure further describe a method of polymerization comprising contacting one or more monomers with an initiator and a chain transfer agent to form a polymer having a thiocarbonylthio end group in a reaction solution and contacting the polymer with a borane compound in the presence of oxygen to remove the thiocarbonylthio end group from the polymer.