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Title:
CURABLE WATER-SWELLING WATERSTOP MATERIAL, WATERSTOP STEEL SHEET PILE, WATERSTOP STEEL SHEET PILE PRODUCTION METHOD, AND WATER-STOPPING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/149269
Kind Code:
A1
Abstract:
Provided is a curable water-swelling waterstop material, which is friendly to the environment and to workers, has excellent adhesiveness to metal, and has sufficient swelling rate and swollen body membrane strength; also provided are a waterstop steel sheet pile, a waterstop steel sheet pile production method, and a water-stopping method. This curable water-swelling water-stop material contains 0.3 to 25 parts by mass of an aminosilane coupling agent (C), 20 to 250 parts by mass of a water-absorbing resin (D), and 0 to 160 parts by mass of an extender pigment (E), with respect to 100 parts by mass of a resin ingredient comprising 40 to 100 parts by mass of a curable resin (A) having a hydrolysable alkoxysilyl group represented by "-X-CH2-SiR1 Y(OR2)3-Y", and 0 to 60 parts by mass of polyether polyol (B). (In the formula, X represents a bonding functional group wherein a heteroatom having an unshared electron pair is bonded to a methylene group bonded to the silicon atom contained in the hydrolysable silicon group, each of R1 and R2 represents an alkyl group having 1 to 3 carbons, and Y represents 0, 1 or 2.)

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Inventors:
HIGASHINO TAKAAKI (JP)
KATO KENJI (JP)
Application Number:
PCT/JP2020/000923
Publication Date:
July 23, 2020
Filing Date:
January 14, 2020
Export Citation:
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Assignee:
NIPPON CHEMICAL PAINT CO LTD (JP)
International Classes:
E02D5/08; C08K5/5445; C08L1/08; C08L33/02; C08L71/00; C08L71/02; C08L83/06; C09K3/10
Domestic Patent References:
WO2010047249A12010-04-29
WO2010008079A12010-01-21
WO2011114849A12011-09-22
WO2014132736A12014-09-04
Foreign References:
JP2014084345A2014-05-12
JP2003292939A2003-10-15
JP2005113464A2005-04-28
JP5447655B22014-03-19
JPH01168766A1989-07-04
Other References:
See also references of EP 3926097A4
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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