PIT-FILLING COMPOSITION FOR PIPE

• Main Authors: MATSUMURA MASAHITO, ANAMIZU TAKASHI
• Format: Patent
• Language: English
• Published: 06.02.1992
• Subjects: BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WEAPONS

PURPOSE:To provide a pit-filling composition for a pipe which is excellent in flow and can extend a distance between adjacent unfilled pits by using a base comprising a reactive liquid resin, spherical inorganic particles and spherical synthetic resin particles and a curing agent. CONSTITUTION:A base is produced by mixing 100 pts.wt. reactive liquid resin (e.g. epichlorohydrin/bisphenol A epoxy resin) with 5-30 pts.wt. spherical inorganic particles (e.g. spherical glass powder) and 3-30 pts.wt. spherical synthetic resin particles (e.g. spherical polyethylene particles). This base is combined with a curing agent (e.g. liquid polyamine curing agent) to produce a two-pack pit-filling composition for a pipe. The obtained composition 2 is put in a vessel 1 connected to a pipe 4 to be mended through a connecting pipe 7, and a blower 3 is operated to force the composition 2 into the pipe 4 to thereby fill corrosion pits 5, thus forming filled parts 6.