Konditionierungslösung für Kontaktlinsen

• Main Authors: BOTHE, HARALD, SEIFERLING, BERNHARD, HEINRICH, AXEL, MUELLER, ACHIM
• Format: Patent
• Language: German
• Published: 29.03.2007
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a process for the manufacture of a moulding, comprising the steps: (a) applying to at least one surface of a multi-part UV-transmissible quartz or glass mould a solution of a poly(oxyethylene)-poly(oxypropylene) block copolymer, (b) optionally, drying the solution on the mould, (c) introducing an aqueous solution comprising a water-soluble prepolymer having crosslinkable groups into the mould, (d) initiating of crosslinking by irradiation with UV-light, (e) removing the mouldings from the mould, and (f) optionally, washing and drying the mould.