Title:
METHOD FOR RENOVATING PIPE
Document Type and Number:
WIPO Patent Application WO/2023/017851
Kind Code:
A1
Abstract:
This method for renovating a pipe includes: a step (I) for preparing a resin composition; a step (II) for impregnating a fiber base material (F) with the resin composition to obtain a resin composition-impregnated base material; a step (III) for obtaining a lining material containing the resin composition-impregnated base material; and a step (IV) for disposing the lining material in a pipe and photocuring the lining material. The resin composition contains: a resin (A); an ethylenically unsaturated group-containing monomer (B); a thickening agent (C); and a photopolymerization initiator (D). The resin composition has a viscosity of 0.1-3 Pa·s at 25°C in step (II). The resin composition has a viscosity of 400-3500 Pa·s at 25°C when the lining material is disposed in the pipe in step (IV).
Inventors:
KOBAYASHI KENICHI (JP)
OKADA NAOTO (JP)
INOUE SATOSHI (JP)
MARUMO KAZUMASA (JP)
OKADA NAOTO (JP)
INOUE SATOSHI (JP)
MARUMO KAZUMASA (JP)
Application Number:
PCT/JP2022/030701
Publication Date:
February 16, 2023
Filing Date:
August 12, 2022
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
B29C63/34; C08F2/44; C08F2/50; C08F283/01; C08F290/00; C08F290/06; C08F290/14; C08J5/04; F16L1/00; F16L55/162
Foreign References:
| JP2011042164A | 2011-03-03 | |||
| JP2008522866A | 2008-07-03 | |||
| JP2007291179A | 2007-11-08 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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