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    • 4. 发明授权
    • Polycarbonate foam articles
    • 聚碳酸酯泡沫文章
    • US5158985A
    • 1992-10-27
    • US815085
    • 1991-12-27
    • Burkhard KohlerKlaus HornWolfgang EbertKlaus KircherJohann Piontek
    • Burkhard KohlerKlaus HornWolfgang EbertKlaus KircherJohann Piontek
    • C08G63/64C08G64/42C08J9/02C08J9/08C08K5/00C08K5/09C08K5/10C08K5/109C08L69/00
    • C08J9/08C08G63/64C08G64/42C08J9/02C08J2369/00
    • A process for the production of polycarbonate foam moldings is disclosed. Accordingly, a composition is prepared comprising mixing a thermoplastic polycarbonate resin and 0.01 to 1 mole-% of a transesterification catalyst anda) 0.1 to 5 mole-% of an aromatic polycarboxylic acid, optionally along with about 0.1 to 5 mole-% of at least one member selected from the group consisting of aliphatic hydroxy carboxylic acids and aliphatic polyalcohols, orb) 0.1 to 5 mole-% of H.sub.2 O, optionally along with at about 0.1 to 5 mole-% of at least one member selected from the group consisting of aliphatic hydroxycarboxylic acids and an aliphatic alcohols, orc) the additives of said a) and b), ord) 0.1 to 5 mole-% of at least one member selected from the group consisting of diarylcarbonates and oligocarbonates,said percent based in every case on moles aromatic carbonate structural units ##STR1## in which --O--R--O is a diphenolate residue. The composition obtained is processed to foam moldings by injection molding or by extrusion at temperatures of 210.degree. C. to 340.degree. C.
    • 公开了生产聚碳酸酯泡沫塑料模制品的方法。 因此,制备组合物,其包括将热塑性聚碳酸酯树脂和0.01至1摩尔%的酯交换催化剂混合,和(ii)0.1至5摩尔%的芳族多元羧酸,任选地与约0.1至5摩尔% 至少一种选自脂肪族羟基羧酸和脂肪族多元醇的成员,或b)0.1〜5摩尔%的H 2 O,任选与约0.1〜5摩尔%的至少一种选自以下的成员: 的脂族羟基羧酸和脂族醇,或c)所述a)和b)的添加剂,或d)0.1至5摩尔%的选自二芳基碳酸酯和寡碳酸酯的至少一种,所述百分比基于 芳香族碳酸酯结构单元“IMAGE”中的每种情况,其中-OR是二酚酸酯残基。 将得到的组合物通过注射成型或在210℃至340℃的温度下挤出加工成泡沫成型体。