摘要:
The present invention relates to highly porous polymeric materials comprising covalently grafted biologically active species. The invention also relates to a process for the preparation of highly porous materials comprising functional monomers capable of grafting to a biologically active molecular species comprising the steps of: (a) preparing an emulsion composition comprising a droplet phase and a continuous phase and containing monomers, (b) curing the emulsion and (c) optionally removing the water/droplet phase. The invention further relates to a process for grafting biologically active species to such a highly porous polymeric material comprising the steps of: (i) exposing the highly porous material to a solution of the biologically active species in a suitable solvent medium, (ii) optionally adding an activating agent, (iii) optionally heating, and (iv) rinsing the porous material with solvent medium to remove non-grafted species. The highly porous polymeric materials comprising covalently grafted biologically active species can be used e.g. as a heterogeneous catalyst, in biosensors, for chromatography, in biomedical devices and in implants.
摘要:
The present invention relates to a composition suitable for forming an optical coating, the composition comprising core-shell nanoparticles, wherein said nanoparticles comprise: (a) core material comprising polymer; and (b) shell material comprising metal oxide.
摘要:
The present invention relates to an ocular polymer delivery composition comprising at least one ophthalmologic agent dispersed in at least one biodegradable polymer, wherein the polymer comprises at least one of a poly (ester amide) (PEA) having a chemical formula described by structural formula (I).
摘要:
The invention relates to an hydrophilic membrane comprising a membrane carrier and a hydrophilic coating with good properties. The coating may comprise covalently bound inorganic-organic hybrid material; or the coating may comprise ring-opening polymerized components like epoxy resins. The coating composition preferably is applied in a solvent, the solvent is evaporated, and the coating is cured with UV radiation. The hydrophilic membrane is very useful in water purification, and in other applications.
摘要:
The invention relates to an article comprising a substrate and a nano-porous coating, wherein the reflectivity of the article is less then 2%, and whereby the amount of sodium measured in the coating by XPS is less then 1 wt %, and further to a method of making the article.
摘要:
The present invention relates to a composition suitable for forming an optical coating, the composition comprising core-shell nanoparticles, wherein said nanoparticles comprise: (a) core material comprising polymer; and (b) shell material comprising metal oxide.
摘要:
The invention relates to a new process for the preparation of nano-structured and/or nano-porous surfaces, coatings having a nano-structured and/or nano-porous surface and articles comprising said coatings. The invention also relates to the use of coatings according to the invention, in particular as anti-reflective coatings. The process for the preparation of the surface nano-structured and/or nano-porous coatings is a process comprising the steps of: a) applying a mixture to a substrate which mixture comprises: i) reactive nano-particles; ii) at least one solvent; iii) optionally a compound having at least one polymerisable group, in an amount that results in an increase in the transmission of at least 0.5%, for at least part of the electromagnetic spectrum between 400 and 800 nm, after the mixture has been applied and cured on a transparent substrate, in comparison with the same substrate without a coating; b) inducing crosslinking and/or polymerisation in the mixture applied to the substrate.
摘要:
The present invention provides a coating system comprising an antireflective functionality and UV absorbing functionality. The present invention further provides methods, uses, and articles comprising such a system.
摘要:
The invention provides a sol-gel process for preparing a mixture of metal-oxide-metal compounds wherein at least one metal oxide precursor is subjected to a hydrolysis treatment to obtain one or more corresponding metal oxide hydroxides, the metal oxide hydroxides so obtained are subjected to a condensation treatment to form the metal-oxide-metal compounds, which process is carried out in the presence of a catalyst which comprises a labile protecting group (P9) and a base (B) which are covalently linked, whereby the covalent link between the protecting group and the base is cleavable by exposure to an external stimulus, and wherein the base released after exposure to such external stimulus is capable of catalyzing the condensation of the metal-hydroxide groups that are present in the metal oxide hydroxides so obtained.