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    • 3. 发明申请
    • PAPER MAKING SHOE PRESS BELT
    • PAPER MAKEING SHOE PRESS BELT
    • US20130192788A1
    • 2013-08-01
    • US13541946
    • 2012-07-05
    • Takao YazakiShintaro YamazakiYuya Takamori
    • Takao YazakiShintaro YamazakiYuya Takamori
    • D21F7/08
    • D21F3/0227
    • A paper making shoe press belt includes a reinforcing fiber substrate and a polyurethane laminate. The reinforcing fiber substrate is embedded in at least one layer of the polyurethane laminate. At least one layer 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 diethyltoluenediamine and hydroquinone bis (β-hydroxyethyl) ether. 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.
    • 造纸靴压榨带包括增强纤维基材和聚氨酯层压板。 增强纤维基材嵌入至少一层聚氨酯层压板中。 至少一层聚氨酯层压体包括通过将氨基甲酸酯预聚物与混合的固化剂一起热固化得到的聚氨酯。 氨基甲酸酯预聚物包括末端异氰酸酯基团,并且通过二异氰酸酯化合物和长链多元醇反应获得。 二异氰酸酯化合物包括甲苯 - 二异氰酸酯,二苯基甲烷 - 二异氰酸酯和对亚苯基 - 二异氰酸酯中的至少一种。 混合固化剂包括70-99.5mol%的二甲基硫代甲苯二胺和0.5-30mol%的固化剂。 固化剂包括二乙基甲苯二胺和氢醌双(β-羟乙基)醚中的至少一种。 混合固化剂的活性氢基团与氨基甲酸酯预聚物的异氰酸酯基团的当量比为1.02-1.15。
    • 4. 发明申请
    • SHOE PRESS BELT
    • 鞋类皮带
    • US20100147480A1
    • 2010-06-17
    • US12600487
    • 2008-05-14
    • Takao YazakiNobuharu SuzukiShintaro YamazakiAtsushi Ishino
    • Takao YazakiNobuharu SuzukiShintaro YamazakiAtsushi Ishino
    • D21F3/00
    • D21F3/0227Y10S162/901
    • Disclosed is a shoe press belt (10) which comprises a reinforcing fibrous base material (6) embedded in a polyurethane layer, and has an outer circumference layer (2a) and an inner circumference layer (2b) each formed with a polyurethane. The polyurethane layer constituting the outer circumference layer (2a) comprises a polyurethane which is cured by the reaction of an urethane prepolymer (A) with a curing agent mixture (B). The urethane prepolymer (A) is produced by reacting an isocyanate compound selected from p-phenylene-diisocyanate and 4,4′-methylenebis(phenylisocyanate) with a polytetramethylene glycol and has an isocyanate group at its terminal. The curing agent mixture (B) comprises 1,4-butanediol and an aromatic polyamine having an active hydrogen group (H). The shoe press belt has excellent wear resistance, cracking resistance and bending fatigue resistance.
    • 公开了一种靴式压榨带(10),其包括嵌入聚氨酯层中的增强纤维基材(6),并且具有各自形成有聚氨酯的外周层(2a)和内周层(2b)。 构成外周层(2a)的聚氨酯层包含通过氨基甲酸酯预聚物(A)与固化剂混合物(B)的反应固化的聚氨酯。 氨基甲酸酯预聚物(A)通过使选自对苯二异氰酸酯和4,4'-亚甲基双(异氰酸苯酯)的异氰酸酯化合物与聚四亚甲基二醇反应而制备,并在其末端具有异氰酸酯基。 固化剂混合物(B)包含1,4-丁二醇和具有活性氢基团(H)的芳香族多胺。 靴式压榨带具有优异的耐磨性,抗开裂性和抗弯曲疲劳性。