Title:
CLOSED-CELL FOAM WATERSTOP SHEET WITH ADHESION LAYER
Document Type and Number:
WIPO Patent Application WO/2015/125917
Kind Code:
A1
Abstract:
This closed-cell foam waterstop sheet with an adhesion layer is obtained by adhering: an adhesion layer including a rubber component (A), which comprises a total of at least 80 mass% of a butyl rubber (a1) and a ethylene-propylene-diene rubber (a2), and a petroleum resin-based tackifier (B), said layer having a thickness of 0.01-2.00 mm; and a closed-cell foam sheet in which the proportion of closed cells is at least 70%. The mass ratio [(a2)/(a1)] of the ethylene-propylene-diene rubber (a2) to the butyl rubber (a1) is 0/100-93/7, the petroleum resin-based tackifier (B) is included at a proportion of 0.5-20.0 parts by mass per 100 parts by mass of the rubber component (A), and the 25% compressive stress of the sheet is 10-800 kPa.
Inventors:
KANAZAWA FUTOSHI (JP)
HIRAIKE HIROSHI (JP)
HIRAIKE HIROSHI (JP)
Application Number:
PCT/JP2015/054771
Publication Date:
August 27, 2015
Filing Date:
February 20, 2015
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
B32B5/18; B32B25/04; B32B27/00; C08J9/36; C09K3/10
Domestic Patent References:
| WO2009028419A1 | 2009-03-05 |
Foreign References:
| JP2003003619A | 2003-01-08 | |||
| JP2013010957A | 2013-01-17 | |||
| JP2009258274A | 2009-11-05 | |||
| JP2010177356A | 2010-08-12 |
Other References:
See also references of EP 3109044A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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