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    • 9. 发明公开
    • 고점도 폴리에스테르 수지의 제조 방법
    • 制备具有高粘度的聚酯树脂的方法
    • KR1020100067530A
    • 2010-06-21
    • KR1020080126132
    • 2008-12-11
    • 롯데케미칼 주식회사
    • 한기정신규환임경호
    • C08G63/78B29C47/00
    • PURPOSE: A method for manufacturing a polyester resin having high viscosity is provided to manufacture the polymer resin having excellent mechanical properties in a short time without a separate solid state polymerization and to effectively reduce process time and cost. CONSTITUTION: A method for manufacturing a polyester resin having high viscosity comprises a step of manufacturing a polyester polymer having intrinsic viscosity of 0.3-0.6 through a melting polymerization and a step of extruding the polyester polymer having low viscosity in an extruder or a high speed mixer. The polyester resin of high viscosity has an intrinsic viscosity more than 0.74. A reaction temperature in the extruder or the high speed mixer is 280-300 °C.
    • 目的:提供一种制造具有高粘度的聚酯树脂的方法,以在短时间内制备具有优异机械性能的聚合物树脂,而不需要单独的固态聚合,并有效地减少加工时间和成本。 构成:制造具有高粘度的聚酯树脂的方法包括通过熔融聚合制造特性粘度为0.3-0.6的聚酯聚合物的步骤,以及在挤出机或高速混合机中挤出具有低粘度的聚酯聚合物的步骤 。 高粘度聚酯树脂的特性粘度大于0.74。 挤出机或高速混合机中的反应温度为280-300℃。
    • 10. 发明公开
    • 신율 및 수축성이 우수한 수축필름용 열가소성 폴리에스테르 수지
    • 具有改善伸缩性和可收缩性的可收缩膜的热塑性聚酯树脂
    • KR1020110064809A
    • 2011-06-15
    • KR1020090121550
    • 2009-12-09
    • 롯데케미칼 주식회사
    • 서용석신규환
    • C08G63/183C08G63/42C08L67/03C08J5/18
    • PURPOSE: A thermoplastic polyester resin for a shrinkable film is provided to improve elongation and shrinkable property by controlling heat resistance and shrinkage rate. CONSTITUTION: A thermoplastic polyester resin for a shrinkable film is obtained by copolymerizing 10~30 mole% of isophthalic acids, 70~90 mole% of diol including polyethylene glycol and pentaerythritol, a composite catalyst consisting of 10~20 ppm of titanium-based catalyst and 300~500 ppm of antimony-based catalyst, 0.1~10 ppm of pigment, 400~1500 ppm of slip agent, and 70~700 ppm of power outage approval agent. The diol comprises 0.8~3.0 mole% of polyethylene glycol and 0.5~3.5 mole% of pentaerythritol. The elongation of the thermoplastic polyester resin for the shrinkable film is 350% or more in a longitudinal direction and 70% or more in a width direction. The shrinkage rate of the thermoplastic polyester resin in a width direction is 45~75%.
    • 目的:提供用于收缩膜的热塑性聚酯树脂,以通过控制耐热性和收缩率来提高伸长率和收缩性。 构成:通过将10〜30摩尔%的间苯二甲酸,70〜90摩尔%的二醇(包括聚乙二醇和季戊四醇)共聚合得到的热塑性聚酯树脂,由10〜20ppm的钛基催化剂 锑基催化剂300〜500ppm,颜料0.1〜10ppm,滑爽剂400〜1500ppm,停电批准剂70〜700ppm。 二醇包含0.8〜3.0摩尔%的聚乙二醇和0.5〜3.5摩尔%的季戊四醇。 用于可收缩膜的热塑性聚酯树脂的伸长率在纵向上为350%以上,宽度方向为70%以上。 热塑性聚酯树脂在宽度方向的收缩率为45〜75%。