Phenol-formaldehyde resin solution containing water soluble alkaline
earth metal salt
    1.
    发明授权
    Phenol-formaldehyde resin solution containing water soluble alkaline earth metal salt 失效
    含有水溶性碱土金属盐的酚醛树脂溶液

    公开(公告)号:US4904516A

    公开(公告)日:1990-02-27

    申请号:US142946

    申请日:1988-01-12

    申请人: Albert W. Creamer

    发明人: Albert W. Creamer

    摘要: A process for preparing a water soluble phenol-formaldehyde resole resin having improved storage stability employs a calcium compound to catalyze the condensation reaction which occurs under basic conditions. Sulfamic acid is used to neutralize the resole solution, yielding a soluble calcium salt which will not settle out of the solution or clog transfer lines or spray nozzles as may a calcium salt precipitated during the neutralization. Glass fiber insulation produced using a binder prepared with the aqueous resole solution shows enhanced thickness recovery and lower odor potential.

    摘要翻译: 制备具有改善的储存稳定性的水溶性酚醛甲酚树脂树脂的方法使用钙化合物来催化在碱性条件下发生的缩合反应。 使用氨基磺酸来中和甲阶溶液,产生可溶性钙盐,其不会溶解在溶液中或堵塞输送管线或喷嘴,如在中和期间沉淀的钙盐。 使用由甲阶酚醛树脂溶液制备的粘合剂制备的玻璃纤维绝缘体显示出增强的厚度恢复和较低的气味潜力。