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    • 115. 发明申请
    • METHOD FOR CHEMICAL FOAMING IN THE PRESENCE OF REINFORCING FILLERS
    • 在填料填料中存在的化学发泡方法
    • US20150158989A1
    • 2015-06-11
    • US14413919
    • 2013-07-12
    • RHODIA OPERATIONSCENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    • Clio CocquetDidier LongOlivier AndresVincent CurtilLise Trouillet-Fonti
    • C08J9/00C08J9/228
    • C08J9/0004C08J9/0061C08J9/0085C08J9/02C08J9/228C08J2203/02C08J2375/04C08J2377/00C08J2377/06C08J2475/04
    • The present invention relates to a method for preparing a foamed item, including the following steps: a) heating a composition including, or consisting of, at least one polyamide PA, at least one compound U including at least one urethane function, particularly a polyurethane PU, at least one reinforcing filler, the content of which is no lower than 10 wt % of the total weight of the composition, and temperature T such that: the compound U directly or indirectly generates CO2, the polyamide is melted, and in particular, such that the composition is injectable; b) injecting or extruding said composition, the injection particularly being injection molding; and c) recovering the foamed item and an expandable granule including, or consisting of, at least one polyamide, at least one compound U, particularly a polyurethane PU, and at least one reinforcing filler, the content of reinforcing filler being no lower than 10 wt % of the total weight of the composition. The invention also relates to the use of such a composition of such a granule, or a foam or foamed item.
    • 本发明涉及一种制备发泡物品的方法,包括以下步骤:a)加热包含至少一种聚酰胺PA或至少一种包含至少一种氨基甲酸酯官能团的化合物U,特别是聚氨酯 PU,至少一种增强填料,其含量不低于组合物总重量的10重量%,温度T使得:化合物U直接或间接地产生CO 2,聚酰胺熔化,特别是 ,使得组合物是可注射的; b)注射或挤出所述组合物,所述注射剂特别是注射成型; 和c)回收泡沫物品和可膨胀颗粒,其包含至少一种聚酰胺,至少一种化合物U,特别是聚氨酯PU和至少一种增强填料,或由至少一种聚酰胺,增强填料的含量不低于10 占组合物总重量的wt%。 本发明还涉及这种颗粒或泡沫或发泡物质的组合物的用途。