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    • 2. 发明专利
    • Method for producing foam urethane sheet
    • 生产泡沫纸的方法
    • JP2013256558A
    • 2013-12-26
    • JP2012131879
    • 2012-06-11
    • Nhk Spring Co Ltd日本発條株式会社
    • KUSAKAWA KOICHIWADA YOKOSERA NORIYUKIYOSHIOKA MINORUTANAKA HAJIME
    • C08G18/10C08G18/20C08G101/00
    • PROBLEM TO BE SOLVED: To provide a method for continuously producing a foam urethane sheet, even if a highly reactive urethane stock solution using a highly viscous prepolymer having terminal NCO groups is used.SOLUTION: A method for producing a foam urethane sheet includes: an application step of continuously applying a reaction stock solution prepared by mixing a prepolymer derived from diphenylmethane diisocyanate and having terminal NCO groups, a foaming agent, a low-molecular polyol having a molecular weight of ≤500, an organic acid having a pKa of 3.46 to 1.00, and a heterocyclic tertiary amine, on a first continuous web 14A, to thereby form an applied film 10; and a heating step of heating the applied film on the first continuous web to cure the applied film.
    • 要解决的问题:提供连续制造泡沫聚氨酯片材的方法,即使使用使用具有末端NCO基团的高粘度预聚物的高反应性聚氨酯储备溶液。溶解性:泡沫聚氨酯片材的制造方法包括: 将来自二苯基甲烷二异氰酸酯和末端NCO基团的发泡剂,发泡剂,分子量为≤500的低分子量多元醇,pKa为3.46的有机酸混合制备的反应原料溶液连续施加到 1.00和杂环叔胺,在第一连续卷材14A上,从而形成涂膜10; 以及加热步骤,用于加热第一连续卷材上的涂膜以固化涂膜。