Method of producing a high molecular weight aliphatic polyester and film
thereof
    2.
    发明授权
    Method of producing a high molecular weight aliphatic polyester and film thereof 失效
    高分子量脂肪族聚酯的制造方法及其膜

    公开(公告)号:US5436056A

    公开(公告)日:1995-07-25

    申请号:US107776

    申请日:1993-08-18

    IPC分类号: C08G18/42 D06N7/04

    摘要: A method for producing a high molecular weight aliphatic polyester, wherein:(A) 100 parts by weight of polyester (a) with a number average molecular weight of at least 10,000, and a weight average molecular weight of at least 30,000, and with end-groups that are substantially hydroxyl groups, and with a melting point of at least 60.degree. C., the polyester (a) having been obtained by reacting the following three ingredients: (i) a glycol ingredient; (ii) an aliphatic dicarboxylic acid ingredient; and (iii) a trifunctional or tetrafunctional ingredient reacts with(B) 0.1-3 parts by weight of a poly-isocyanate in a melted state of the polyester (a).The method provides a high molecular weight aliphatic polyester which has good properties and a melt viscosity required for molding and forming and has a wide molecular weight distribution. The high molecular weight aliphatic polyester is applicable to a variety of fields, such as films, moldings and formings, fibers, etc.

    摘要翻译: PCT No.PCT / JP92 / 01671 Sec。 371日期:1993年8月18日 102(e)日期1993年8月18日PCT提交1992年12月21日PCT公布。 第WO93 / 13152号公报 日本特许公报1993年7月8日。一种高分子量脂肪族聚酯的制造方法,其中:(A)100重量份数均分子量为10,000以上的聚酯(a),重均分子量 至少30,000,并且具有基本上为羟基的端基,并且熔点为至少60℃,所述聚酯(a)通过使以下三种成分反应获得:(i)二醇成分; (ii)脂族二羧酸成分; 和(iii)三官能或四官能组分与聚酯(a)熔融状态的(B)0.1-3重量份聚异氰酸酯反应。 该方法提供了高分子量脂族聚酯,其具有良好的性能和模塑和成型所需的熔体粘度并且具有宽的分子量分布。 高分子量脂肪族聚酯适用于各种领域,如薄膜,成型品,成型品,纤维等。