Stable polyamide solutions
    1.
    发明授权
    Stable polyamide solutions 失效
    稳定的聚酰胺溶液

    公开(公告)号:US4714736A

    公开(公告)日:1987-12-22

    申请号:US869152

    申请日:1986-05-29

    摘要: Polyamide solutions for imparting wet strength to paper are stabilized by acidifying uncrosslinked polyamide solutions prior to storage or prior to crosslinking with epichlorohydrin to form polyamide resins. The acidification of the uncrosslinked solutions allows for storage without refrigeration. The acidification prior to crosslinking results in wet strength resins that are stable at solids concentrations of at least 30% and that exhibit high strength when the resins are post cooked to a viscosity of between about 325 and 425 cps.

    摘要翻译: 通过在储存之前或在与表氯醇交联之前酸化未交联的聚酰胺溶液以形成聚酰胺树脂来稳定赋予纸张湿强度的聚酰胺溶液。 未交联的溶液的酸化允许在没有冷藏的情况下储存。 在交联之前的酸化导致在强度至少为30%的固体浓度下稳定的湿强度树脂,并且当树脂在后蒸煮至约325至425cps之间的粘度时表现出高强度。