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发明公开
CN101768340A 一种具有抗黄变功能的PET树脂组合物及其制备方法 无效 - 驳回

一种具有抗黄变功能的PET树脂组合物及其制备方法
摘要：
本发明提供了一种具有抗黄变功能的PET树脂组合物，其特征在于，由以下以重量份计的原料组成：聚对苯二甲酸乙二醇酯41.5-99；短切玻璃纤维0-40；增韧剂0-15；成核剂0.2-1.0；偶联剂0.2-0.5；抗紫外剂0.2-0.5；抗黄变剂0.2-1.0；抗氧剂0.2-0.5。上述组合物的制备方法，其特征在于，具体步骤为：按重量比例称取各原料，混合后进入双螺杆挤出机，在挤出机中间部位六区加入短切玻璃纤维，冷却，干燥，切粒。该树脂组合物在同等热氧条件或紫外光照条件下，具有较好的抗黄变性能。
摘要（英）：

The invention provides a PET resin composition with an anti-yellowing function, which is characterized by comprising the following raw materials in portions by weight: 41.5-99 portions of polyethylene terephthalate, 0-40 portions of chopped glass fiber, 0-15 portions of toughening agent, 0.2-1.0 portion of nucleating agent, 0.2-0.5 portion of coupling agent, 0.2-0.5 portion of anti-ultraviolet agent, 0.2-1.0 portion of anti-yellowing agent and 0.2-0.5 portion of antioxidant. The preparation method of the composition is characterized by comprising the following concrete steps: weighing the raw materials according to the portions by weight; mixing the raw materials, and then putting the mixture into a double-screw extruder; adding the chopped glass fiber into the sixth region of the middle part of the extruder; and cooling, drying and granulating by cutting. The resin composition has better anti-yellowing performance under the same thermal oxidization condition or ultraviolet irradiation condition.

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