Melt-processible poly (ester urethane) and a process for the preparation
thereof
    1.
    发明授权
    Melt-processible poly (ester urethane) and a process for the preparation thereof 失效
    可熔融加工的聚(酯氨基甲酸酯)及其制备方法

    公开(公告)号:US6087465A

    公开(公告)日:2000-07-11

    申请号:US765402

    申请日:1997-01-31

    摘要: The invention concerns a novel melt-processible poly(ester urethane) and a process and a prepolymer for the preparation thereof. The poly(ester urethane) contains structural units derived from a polyester and structural units derived from a diisocyanate and, according to the invention, the bonds between the structural units are at least mainly comprised of urethane bonds, the number average molar mass, M.sub.n, of the prepolymer is at least 10,000 g/mol, its mass-average molar mass, M.sub.w, is over 20,000 g/mol and its molar mass distribution, expressed as the ratio of M.sub.w /M.sub.n, is over 2, and the prepolymer is essentially free from free isocyanate groups. The poly(ester urethane) is hydrolytically decomposable and it can be used as a biodegradable polymer, e.g., for manufacturing injection molded pieces and thermoformed and blow molded packages, bags, sacks and bottles, for coating of sacks, bags and films made of paper or cardboard, and for manufacturing fibers and non-woven fabrics.

    摘要翻译: PCT No.PCT / FI95 / 00396 Sec。 371日期1997年1月31日 102(e)日期1997年1月31日PCT提交1995年7月7日PCT公布。 公开号WO96 / 01863 日期1996年1月25日本发明涉及一种新型的可熔融加工的聚(酯氨基甲酸酯)及其制备方法和预聚物。 聚(酯氨基甲酸酯)含有衍生自聚酯的结构单元和衍生自二异氰酸酯的结构单元,根据本发明,结构单元之间的键至少主要由氨基甲酸酯键,数均摩尔质量Mn, 的预聚物为至少10,000g / mol,其质均平均摩尔质量Mw为20,000g / mol以上,以Mw / Mn比表示的摩尔质量分数大于2,预聚物基本上为 不含游离异氰酸酯基团。 聚(酯氨基甲酸酯)可水解分解,可用作可生物降解的聚合物,例如用于制造注塑件和热成型和吹塑成型包装,袋,袋和瓶子,用于包装纸袋,袋和纸制成的纸 或纸板,以及用于制造纤维和无纺织物。

    Thermoplasticized starch component and process for the preparation
thereof
    2.
    发明授权
    Thermoplasticized starch component and process for the preparation thereof 失效
    热塑性淀粉组分及其制备方法

    公开(公告)号:US6011092A

    公开(公告)日:2000-01-04

    申请号:US981933

    申请日:1998-01-12

    摘要: The invention relates to a process for thermoplasticizing starch, a melt-processible polymer composition, which contains a starch-based component and a thermoplastisized polymer component, and a method for preparating such a composition. According to the invention the starch component, which contains hydroxyl groups capable of reacting with isocyanate groups, is modified so that it can be dissolved or gelatinized/plastisized in the melt of a hydroxy acid polymer. The starch component is then reacted with a thermoplastic component formed by a hydroxy acid polymer, in particular a lactic acid polymer, in order to produce a melt-processible, biologically degradable starch-based polymer, which can be used as an adhesive and for coating of paper and cardboard products and for preparation of injection moulded and thermoformed articles.

    摘要翻译: PCT No.PCT / FI96 / 00402 Sec。 371日期:1998年1月12日 102(e)日期1998年1月12日PCT提交1996年7月10日PCT公布。 出版物WO97 / 03120 日期1997年1月30日本发明涉及一种热塑性淀粉的方法,一种可熔融加工的聚合物组合物,其包含淀粉基组分和热塑性聚合物组分,以及制备这种组合物的方法。 根据本发明,含有能够与异氰酸酯基团反应的羟基的淀粉组分被改性,使得其可以在羟基酸聚合物的熔体中溶解或凝胶化/增塑。 然后将淀粉组分与由羟基酸聚合物,特别是乳酸聚合物形成的热塑性组分反应,以制备可熔融加工的生物降解淀粉基聚合物,其可用作粘合剂和涂层 的纸和纸板产品以及用于制备注塑和热成型制品。