Recyclable thermoplastics foam of high glass temperature
    9.
    发明授权
    Recyclable thermoplastics foam of high glass temperature 失效
    可回收的热塑性塑料泡沫玻璃温度高

    公开(公告)号:US5300543A

    公开(公告)日:1994-04-05

    申请号:US127724

    申请日:1993-09-28

    CPC分类号: C08J9/12

    摘要: A thermoplastic molding composition suitable for the preparation of foam is disclosed. The composition comprises a thermoplastic resinous component and a foaming agent which includes A) (i) 0.01 to 4.8% alumina hydrate (aluminum hydroxide) in combination with (ii) 0.01 to 4.8% of an acidic additive or B) 0.01 to 4.8% of the reaction product of said (i) and said (ii), the percentages being relative to the weight of the composition to be foamed. The invention is based on the finding that the foaming of the composition does not lead to any significant reduction in molecular weight of the resinous component or to troublesome discoloration of the foam, even during its re-extrusion.

    摘要翻译: 公开了一种适于制备泡沫的热塑性模塑组合物。 该组合物包含热塑性树脂组分和发泡剂,其包括A)(i)0.01至4.8%的氧化铝水合物(氢氧化铝)与(ii)0.01至4.8%的酸性添加剂的组合,或B)0.01至4.8%的 所述(i)和所述(ii)的反应产物的百分比相对于要发泡的组合物的重量。 本发明基于以下发现:组合物的发泡不会导致树脂组分的分子量的任何显着降低,或者即使在其再挤出期间泡沫的麻烦变色。