Abstract:
A process for producing an acylated vinylamine-containing polymer is disclosed. The acylated vinylamine-containing polymer is produced by reacting a vinylamine-containing polymer with at one acylating agent.
Abstract:
The present invention provides a solid support for Fmoc-solid phase synthesis of peptides. In particular, the solid supports of the invention may be utilized to produce peptide acids.
Abstract:
A method of manufacturing at least one customized MIP unit comprising: (a) providing at least one MIP unit having a surface comprising at least one target binding site configured to resemble a target molecule and surface-bound chargeable groups; (b) contacting the MIP unit(s) from the step (a) with at least one template molecule in a first solvent allowing the template molecule (s) to bind to the MIP unit(s); (c) passivating the surface-bound chargeable groups on the MIP unit(s) by adding a passivating agent; and (d) removing the template molecule (s) by washing in a second solvent, wherein the passivating agent binds to the surface of the unit(s) through bonds which remain stable upon washing in the second solvent.
Abstract:
A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.
Abstract:
A process for coating flexible substrates applying a curable fluorinated copolymer A which is the reaction product of FC and M1) at least one polycarboxylic anhydride and/or M2) at least a monofunctional isocyanate, wherein FC is a curable fluorinated copolymer on the basis of FC1) at least one fluorinated olefin having 2 to 10 carbon atoms, FC2) at least one non-fluorinated olefin having OH-groups and optionally carboxyl groups and FC3) at least one non-fluorinated, hydroxyl group free olefin having optionally carboxyl groups.
Abstract:
The present invention provides a water-soluble crosslinkable poly(oxyalkylene)containing prepolymer. The crosslinkable poly(oxyalkylene)-containing copolymer prepolymer of the invention is prepared by reacting an amine-capped poly(oxyalkylene)containing polyamide with a multifunctional compound having at least one one ethylenically unsaturated group and a function group coreactive with the capping amine groups of the amine-capped poly(oxyalkylene)-containing polyamide. The amine-capped poly(oxyalkylene)-containing polyamide is a copolymerization production of a mixture comprising: (a) at least one poly(oxyalkylene)diamine, (b) optionally at least one organic dior poly-amine, (c) at least one dicarboxyl derivative, (d) optionally at least one polycarboxyl derivative, and (e) a carbodiimide. The crosslinkable poly(oxyalkylene)-containing prepolymer of the invention can find use in economically producing contact lenses which have improved thermal stability. In addition, the present invention provides method for making a medical device, preferably an ophthalmic device, more preferably a contact lens.
Abstract:
This invention is directed to a catalyst and an associated process for polymerizing olefins or olefin-containing compounds, to corresponding olefin polymers, to derivatives of the olefin polymers, and to lubricant and fuel compositions that include the olefin polymers or their derivatives. The polymerization catalyst is a metal complex and optional cocatalyst where the metal complex is formed from a bidentate ligand having a nitrogen coordinating group and a second coordinating group selected from oxygen, sulfur, selenium and tellurium groups and a metal compound where the metal is a transition metal, boron, aluminum, germanium or tin. Highly branched and reactive ethylene polymers are formed from the catalyst and process of the present invention. The ethylene polymers and their derivatives are useful in various applications including as performance additives in lubricants and fuels.
Abstract:
A hydrophilic ethylenically unsaturated macromonomer is disclosed that is prepared by the addition polymerisation of addition polymerisable monomers that include monomers that have hydroxyl or amino functional groups, some of which may be subsequently reacted to provide (meth)acryl ethylenic unsaturation. The macromonomers may be used to form intraocular lenses in situ by polymerisation of the macromonomers.
Abstract:
The covalent modification of a hydrophobic polymer surface by a process which utilizes the functionalizable chain ends of the hydrophobic polymer is disclosed. The process of the invention is conveniently carried out under heterogeneous conditions, allowing the practitioner to take full advantage of the general processability, strength, and other desirable characteristics of a hydrophobic polymer used in the production of a manufactured article. The invention is most advantageously applied to the surface modification of microporous membranes, allowing the practitioner to choose from a vast range of possible surface macromolecular species which may be covalently bound to the membrane polymer chain ends. The process of the invention proceeds without a significant reduction in the pore dimensions or hydraulic permeability of the original unmodified membrane. This invention also discloses a four-component dope composition which exhibits surprising and useful thermal phase separation characteristics which can be exploited in a manufacturing process disclosed herein. A spinnerette assembly which greatly facilitates the efficiency and versatility of said process is also described.