Title:
製紙用シュープレスベルト
Document Type and Number:
Japanese Patent JP5161376
Kind Code:
B1
Abstract:
A paper making shoe press belt includes a reinforcing fiber substrate (6) and a polyurethane laminate. The reinforcing fiber substrate (6) is embedded in at least one layer (21, 22) of the polyurethane laminate. At least one layer (21, 22)of the polyurethane laminate includes a polyurethane obtained by heat-curing a urethane prepolymer together with a mixed curing agent. The urethane prepolymer includes a terminal isocyanate group and is obtained by reacting a diisocyanate compound and a long-chain polyol. The diisocyanate compound includes at least one of toluene-diisocyanate, diphenylmethane-diisocyanate, and paraphenylene-diisocyanate. The mixed curing agent includes 70-99.5 mol% of dimethylthiotoluenediamine and 0:5-30 mol% of a curing agent. The curing agent includes at least one of 4,4'-methylenebis(2,6-diethyl-3-chloroaniline), 4,4'-methylenedianiline, and 1,4-butanediol. An equivalent ratio of active hydrogen groups of the mixed curing agent to isocyanate groups of the urethane prepolymer is from 1.02 to 1.15.
Inventors:
Takao Yazaki
Shintaro Yamazaki
Yuya Takamori
Shintaro Yamazaki
Yuya Takamori
Application Number:
JP2012020045A
Publication Date:
March 13, 2013
Filing Date:
February 01, 2012
Export Citation:
Assignee:
Ichikawa Co., Ltd.
International Classes:
D21F3/00; C08G18/10; C08J5/24; D21F3/02
Domestic Patent References:
| JP2010116652A | ||||
| JP2006225839A | ||||
| JP2005120571A | ||||
| JP2008285784A |
Attorney, Agent or Firm:
Funakoshi Takuko
Kanaya
Kanaya