Title:
POLYURETHANE COMPOSITION AND MARINE HOSE
Document Type and Number:
WIPO Patent Application WO/2023/163175
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a polyurethane composition having exceptional pot life, curability under room-temperature conditions and in open systems, foaming resistance, hardness after curing, abrasion resistance, and water resistance; and a marine hose. The present invention relates to: a room-temperature-curable polyurethane composition containing a urethane prepolymer that has an isocyanate group and is formed from a polyether polyol and tolylene diisocyanate, a curing agent that contains trimethylene-bis(4-aminobenzoate) and/or 2-methylpropyl 3,5-diamino-4-chlorobenzoate, and adipic acid that serves as a catalyst, the composition being such that the molar ratio of isocyanate groups in the urethane prepolymer and amino groups in the curing agent is 0.90-2.00, and the content value for trimethylene-bis(4-aminobenzoate) and/or 2-methylpropyl 3,5-diamino-4-chlorobenzoate is 95-100 mol% of the total curing agent; and a marine hose formed using said composition.
Inventors:
TANAKA YOSHIMI (JP)
WAKAMATSU HIROYUKI (JP)
WAKAMATSU HIROYUKI (JP)
Application Number:
PCT/JP2023/007079
Publication Date:
August 31, 2023
Filing Date:
February 27, 2023
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08G18/32; C08G18/10; C08G18/16; C08G18/48; C08G18/66; C08G18/76; F16L1/12; F16L11/133
Domestic Patent References:
| WO2008065733A1 | 2008-06-05 |
Foreign References:
| JP2017025191A | 2017-02-02 | |||
| JPS6221686A | 1987-01-30 | |||
| JP2007146093A | 2007-06-14 | |||
| JPH02292317A | 1990-12-03 | |||
| JP2004204139A | 2004-07-22 | |||
| JPS6111226A | 1986-01-18 | |||
| JPH10185048A | 1998-07-14 | |||
| JPH01176886A | 1989-07-13 | |||
| JP2003342347A | 2003-12-03 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
Download PDF:
Previous Patent: WORKPIECE MACHINING METHOD AND MACHINING MACHINE
Next Patent: REAGENT FOR USE IN DETECTION OR MEASUREMENT OF SERINE PROTEASE
Next Patent: REAGENT FOR USE IN DETECTION OR MEASUREMENT OF SERINE PROTEASE