EP 2623667 B1 20150408 - Paper making shoe press belt
Title (en)
Paper making shoe press belt
Title (de)
Schuhpressband zur Papierherstellung
Title (fr)
Courroie de presse à sabot pour la fabrication de papier
Publication
Application
Priority
JP 2012020045 A 20120201
Abstract (en)
[origin: EP2623667A1] 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.
IPC 8 full level
D21F 3/02 (2006.01)
CPC (source: EP US)
D21F 3/0227 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2623667 A1 20130807; EP 2623667 B1 20150408; CN 103243603 A 20130814; CN 103243603 B 20151209; JP 2013159860 A 20130819; JP 5161376 B1 20130313; US 2013192787 A1 20130801
DOCDB simple family (application)
EP 13000525 A 20130201; CN 201310041248 A 20130201; JP 2012020045 A 20120201; US 201213541907 A 20120705