Long open time polyamide compositions
    4.
    发明授权
    Long open time polyamide compositions 失效
    长时间聚酰胺组合物

    公开(公告)号:US5672677A

    公开(公告)日:1997-09-30

    申请号:US585873

    申请日:1996-01-12

    摘要: A polyamide hot melt adhesive is provided. It comprises the polyamide condensation product of substantially equivalent quantities of (a) an acid component consisting essentially of one or more polymeric fatty acids and one or more dicarboxylic acids and (b) an amine component consisting essentially of (i) two or more non-cyclic aliphatic diamines and (ii) one or more amine-terminated polyglycol diamines. The amine component is substantially free of piperazine-containing polyamines. The adhesive has an open time of at least 120 seconds. Preferred non-cyclic aliphatic diamines are ethylenediamine and 1,6-diaminohexane, preferably present in about equimolar amounts. The composition may further comprise an aromatic sulfonamide plasticizer. The adhesive is particularly useful for spraying applications.

    摘要翻译: 提供聚酰胺热熔粘合剂。 它包括基本上相当量的(a)基本上由一种或多种聚合脂肪酸和一种或多种二羧酸组成的酸组分的聚酰胺缩合产物和(b)主要由(i) 环状脂族二胺和(ii)一种或多种胺封端的聚二醇二胺。 胺组分基本上不含含哌嗪的多胺。 粘合剂的打开时间至少为120秒。 优选的非环状脂族二胺是乙二胺和1,6-二氨基己烷,优选以约等摩尔量存在。 组合物还可以包含芳族磺酰胺增塑剂。 粘合剂特别适用于喷涂应用。