HARZZUBEREITUNG FÜR PORÖSE GEGENSTÄNDE UND VERFAHREN ZUR BEHANDLUNG DES ABFALLWASSERS AUS DEM IMPRÄGNIERVERFAHREN

• Main Authors: WELCH, EDWARD, K., II, MUISENER, CHARLES, M
• Format: Patent
• Language: German
• Published: 15.07.1995
• Edition: 6
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; SEPARATION; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; USE OF MATERIALS THEREFOR; WOODSTAINS

A curable composition, useful for impregnating porosity of porous articles, comprising acrylate monomer, heat- and/or anaerobic-cure initiator, and non-peroxy, actinic radiation photoinitiator. A method of treating waste water produced by aqueous washing of a porous article to remove excess impregnant therefrom, wherein the impregnant comprises acrylate monomer and actinic radiation photoinitiator, includes the steps of exposing the waste water to actinic radiation polymerizingly effective for the monomer, and recovering the resulting polymer from the waste water to yield a polymer-depleted effluent which may be discharged to receiving waters.