Abstract:
The present invention relates to hyperbranched polyaspartate esters containing repeating structural units corresponding to the formula I and/or II
The present invention also relates to a process for the preparation of these hyperbranched polyaspartate esters by self condensing, via a transesterification reaction, at least a portion of the hydroxy and ester groups of the hydroxy aspartates corresponding to the above formula at a temperature of 60 to 240°C to form hyperbranched polyaspartate esters and eliminating alcohols having the formula R 1 -OH and/or R 2 -OH.
Abstract:
An adhesive composition including an etchant for a hard tissue surface, at least one multifunctional crosslinkable (meth)acrylate monomer with a functionality greater than 4, and water. The adhesive composition is a water-in-oil emulsion.
Abstract:
The present invention provides compositions and methods for sealing a wound and preparing a lens. The methods of the invention utilize dendritic macromolecules formed by treating a dendritic compound with light or a linking compound. In certain instances, the dendritic compounds have a lysine-, cysteine-, isocysteine-residue or other nucleophilic group attached to the periphery of the dendrimer: Addition of a compound containing two or more electrophilic groups such as aldehydes, activated esters, or acrylates to the lysine-, cysteine-, or isocysteine-capped dendrimers produces a polymeric compound that can form a seal or a lens. Another aspect of the invention relates to a method of treating disease using the pharmaceutical compositions of the invention. Other aspects of the invention relate to kits for sealing a wound or preparing a lens, delivery devices, and methods for controlling the polymerization of a hydrogel system.
Abstract:
Novel hyperbranched segmented copolymers include at least one oligomer. Spacing of branch points in a hyperbranched hyperbranched polymer (A2Bn)x are manipulated by having either A2 or Bn or both A2 and Bn be in the form of an oligomer (as opposed to a monomer).
Abstract:
A dendritic or hyperbranched polymer comprising a plurality of branches, wherein at least one of the branches comprises at least one catechol moiety that is oxidisible to a semiquinone moiety and/or a quinone moiety.
Abstract:
A dendritic or hyperbranched polymer comprising a plurality of branches, wherein at least one of the branches comprises at least one catechol moiety that is oxidisible to a semiquinone moiety and/or a quinone moiety.
Abstract:
Die vorliegende Erfindung betrifft die Verwendung von gezielt aufgebauten hochfunktionellen, hoch- oder hyperverzweigten Polyestern, die β,β,β',β'-Tetra(hydroxymethyl)cycloalkanol als Aufbaukomponente eingebaut enthalten.