摘要:
A polyurethane based prepolymer is provided and useful in biomedical devices which provides high oxygen permeability and superior physical properties. A hydrogel is produced from a comonomer mixture containing a polysiloxane-containing urethane prepolymer, tris(trimethylsiloxy)-silylpropyl methacrylate and a hydrophilic comonomer. The hydrogel is especially useful for biomedical materials such as contact lenses and implants.
摘要:
A method for increasing hydrophilicity of a contact lens, so as to improve surface wettability of the lens, comprises contacting a surface of the contact lens with an aqueous solution including a hydrophilic monomer, and heating the solution while in contact with the surface of the contact lens to effect polymerization.
摘要:
A novel class of compounds are disclosed which may be used as novel crosslinking agents for acrylic-containing, vinyl-containing and/or styrene-containing hydrophilic monomers to prepare novel UV-curable hydrophilic copolymers suitable for use as biomedical articles, especially contact lenses.
摘要:
A method of modifying the surfaces of the polymeric objects by adding a polymerizable surfactant to the monomer mix used to form the object. Also disclosed are surface-modified objects prepared by this method, which is particularly suited for modifying the surfaces of contact lenses.
摘要:
A novel class of compounds are disclosed which may be used as novel crosslinking agents for acrylic-containing, vinyl-containing and/or styrene-containing hydrophilic monomers to prepare novel UV-curable hydrophilic copolymers suitable for use as biomedical articles, especially contact lenses.
摘要:
A method of modifying the surfaces of polymeric objects by adding a polymerizable surfactant to the monomer mix used to form the object. Also disclosed are surface-modified objects prepared by this method, which is particularly suited for modifying the surfaces of contact lenses.
摘要:
A thermotropic polyester carbonate containing aromatic diacyl moieties, aromatic dihydroxy moieties and carbonate moieties, wherein up to 50 mole percent of the aromatic dioxy moieties are replaced with aliphatic dihydroxy moiety, such as 2,2-dimethyl-1,3-propanediol.
摘要:
Provided are surface modified contact lenses formed from one or more fumaric- or itaconic-containing prepolymers having polymerizable functionality that is complimentary to polymerizable hydrophilic polymers.