CN113930064A - 一种聚氨酯用复合抗黄变剂组成物 - Google Patents
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Abstract
本发明公开了一种聚氨酯用复合抗黄变剂组成物，包含：苯甲脒类的紫外线吸收剂、二苯甲酮类紫外线吸收剂、亚磷酸酯类抗氧剂。本发明组成物添加于聚氨酯软泡中，可有效改善其光照后的黄变缺点。
Description
技术领域
本发明是关于一种聚氨酯用抗黄变剂组成物，具体涉及一种用于聚氨酯以减缓其黄变的复合抗黄变剂。
背景技术
聚氨酯材料大多以芳香族异氰酸酯为原料合成，在光、热、氧，特别是紫外线的作用下，会引发氨酯键发生分解，生成芳胺，经氧化重排后，生成醌式结构等发色基团，导致聚氨酯制品颜色发生黄变，特别是浅色聚氨酯材料黄变的状况会更加明显。脂肪族异氰酸酯为原料的聚氨酯材料虽然不会黄变，但由于其强度低、不耐溶剂、更容易降解、成本高，导致其应用不多。虽然许多工作者采用添加剂的方法改善上述问题，但仍有不足之处，单组份的抗氧剂或紫外线吸收剂无法满足聚氨酯材料抗黄变效果要求。
发明内容
本发明针对现有技术存在的不足，提供一种用于聚氨酯材料的的复合抗黄变剂组成物，其适合添加于聚氨酯材料，尤其适用添加于聚氨酯软泡、弹性体，可有效改善聚氨酯材料光照后黄变和稳定性能。
本发明所提供的复合抗黄变剂组成物包括：苯甲脒类的紫外线吸收剂、二苯甲酮类紫外线吸收剂、亚磷酸酯类抗氧剂。
本发明的复合抗黄变剂组成物中，其中苯甲脒类的紫外线剂为：N-（4-乙氧基羰基苯基）-N'-甲基-N'-苯基甲脒，N-（4-乙氧基羰基苯基）-N'-乙基-N'-苯基甲脒，N,N'-双(4-乙氧甲酰基苯基)-N-苯基甲脒，或其混合物。
本发明的复合抗黄变剂组成物中，苯甲脒类的紫外线剂的重量百分比为5%-90%。
本发明的组成物中，其中二苯甲酮类紫外线吸收剂为：2,4-二羟二苯甲酮，2-羟基-4-正辛氧基二苯甲酮，2-羟基-4-甲氧基二苯甲酮，或其混合物。
本发明的复合抗黄变剂组成物中，二苯甲酮类紫外线吸收剂的重量百分比为5%-90%。
本发明的组成物中，其中苯亚磷酸酯类抗氧剂为：亚磷酸三辛酯，亚磷酸三癸酯，亚磷酸三月桂酸酯，亚磷酸三（十三烷基）酯，亚磷酸二苯酯，亚磷酸二苯基异辛基酯，亚磷酸二苯基异癸基酯，亚磷酸三苯酯，亚磷酸三（壬基苯基）酯，亚磷酸一苯二异辛酯，亚磷酸一苯二异癸酯，或其混合物。
本发明的复合抗黄变剂组成物，亚磷酸酯类抗氧剂的重量百分比为5%-90%。
本发明的复合抗黄变剂组成物可由一般公知方法混合，例如，将三种主要成分，包括苯甲脒类的紫外线剂、二苯甲酮类紫外线吸收剂、亚磷酸酯类抗氧剂，同时以公知技术均匀混合而成。当个别成分有固体和液体形式同时存在时，较适合的混合方式是将固体混入液体的方式，并搅拌均匀，形成混合液或分散液。更佳的混合方式是将本发明组成物主要成分中的液态成分进行升温，再将固体成分混入加热的溶液中，混合后的组成物可以保温存放以减少混合物溶液中晶体析出，如果组成物溶液中有结晶现象发生，可以再次升温使组成物溶液液化。
本发明除上述紫外线吸收剂、抗氧剂，亦可并用其他添加剂，如润滑剂，乳化剂，抗静电剂，发泡剂，增塑剂等。
具体实施方式
实施例1
将10克N-（4-乙氧基羰基苯基）-N'-甲基-N'-苯基甲脒、10克亚磷酸二苯基异辛基酯混合后，搅拌升温至50℃，加入5克2-羟基-4-甲氧基二苯甲酮，充分搅拌形成均一溶液，添加入聚氨酯软泡制备配方中，添加量为聚氨酯原料的0.5%。将得到的聚氨酯泡沫塑料制品放入加速老化实验仪，50℃恒温环境下，以340nm灯管对样品持续光照24h，再以色差仪检测试样光照前后的黄变指数YI值，评价其抗黄变性能，结果见表1。
实施例2
将10克N-（4-乙氧基羰基苯基）-N’-甲基-N’-苯基甲脒、8克亚磷酸三苯酯混合后，搅拌升温至50℃，加入、2克2,4-二羟二苯甲酮，充分搅拌形成均一溶液，添加入聚氨酯软泡制备配方中，添加量为聚氨酯原料的1%。将得到的聚氨酯泡沫塑料制品放入加速老化实验仪，50℃恒温环境下，以340nm灯管对样品持续光照24h，再以色差仪检测试样光照前后的黄变指数YI值，评价其抗黄变性能，结果见表1。
实施例3
将10克N-（4-乙氧基羰基苯基）-N'-甲基-N'-苯基甲脒、5克亚磷酸一苯二异辛酯混合后，搅拌升温至50℃，加入2克2-羟基-4-正辛氧基二苯甲酮，充分搅拌形成均一溶液，添加入聚氨酯软泡制备配方中，添加量为聚氨酯原料的1.2%。将得到的聚氨酯泡沫塑料制品放入加速老化实验仪，50℃恒温环境下，以340nm灯管对样品持续光照24h，再以色差仪检测试样光照前后的黄变指数YI值，评价其抗黄变性能，结果见表1。
将回收的活性氧化铝重复使用3次，其他制备方法同实施例3，结果见表1。
表1 加速光老化试验结果
Claims (4)
1.一种聚氨酯用复合抗黄变剂组成物，该组成物包括：
（1）5-90重量份的苯甲脒类的紫外线吸收剂；
（2）5-90重量份的二苯甲酮类紫外线吸收剂；
（3）5-90重量份的亚磷酸酯类抗氧剂。
2.如权利要求1所述的复合抗黄变剂组成物中，苯甲脒类的紫外线剂为：N-（4-乙氧基羰基苯基）-N'-甲基-N'-苯基甲脒，N-（4-乙氧基羰基苯基）-N'-乙基-N'-苯基甲脒，N,N'-双(4-乙氧甲酰基苯基)-N-苯基甲脒中的一种或其混合物。
3.如权利要求1所述的复合抗黄变剂组成物中，二苯甲酮类紫外线吸收剂为：2,4-二羟二苯甲酮，2-羟基-4-正辛氧基二苯甲酮，2-羟基-4-甲氧基二苯甲酮中的一种或其混合物。
4.如权利要求1所述的复合抗黄变剂组成物中，亚磷酸酯类抗氧剂为：亚磷酸三辛酯，亚磷酸三癸酯，亚磷酸三月桂酸酯，亚磷酸三（十三烷基）酯，亚磷酸二苯酯，亚磷酸二苯基异辛基酯，亚磷酸二苯基异癸基酯，亚磷酸三苯酯，亚磷酸三（壬基苯基）酯，亚磷酸一苯二异辛酯，亚磷酸一苯二异癸酯中的一种或其混合物。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114481624A (zh) * | 2022-02-08 | 2022-05-13 | 东莞市中纺化工有限公司 | 一种抗黄变添加剂及其制备方法与应用 |
| CN115109348A (zh) * | 2022-08-17 | 2022-09-27 | 曾荣华 | 一种耐黄变透气型塑胶跑道及制备方法 |
| CN117264334A (zh) * | 2023-10-18 | 2023-12-22 | 东莞市博恩密封技术有限公司 | 一种耐热老化三元乙丙橡胶组合物及其制备方法 |
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| US5369140A (en) * | 1990-05-10 | 1994-11-29 | Ciba-Geigy Corporation | Radiation curable light-stablised compositions |
| CN107200866A (zh) * | 2016-11-24 | 2017-09-26 | 汕头市八隅新材料有限公司 | 一种聚氨酯软泡耐黄剂 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5369140A (en) * | 1990-05-10 | 1994-11-29 | Ciba-Geigy Corporation | Radiation curable light-stablised compositions |
| CN107200866A (zh) * | 2016-11-24 | 2017-09-26 | 汕头市八隅新材料有限公司 | 一种聚氨酯软泡耐黄剂 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114481624A (zh) * | 2022-02-08 | 2022-05-13 | 东莞市中纺化工有限公司 | 一种抗黄变添加剂及其制备方法与应用 |
| CN114481624B (zh) * | 2022-02-08 | 2024-05-03 | 东莞市中纺化工有限公司 | 一种抗黄变添加剂及其制备方法与应用 |
| CN115109348A (zh) * | 2022-08-17 | 2022-09-27 | 曾荣华 | 一种耐黄变透气型塑胶跑道及制备方法 |
| CN117264334A (zh) * | 2023-10-18 | 2023-12-22 | 东莞市博恩密封技术有限公司 | 一种耐热老化三元乙丙橡胶组合物及其制备方法 |
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Application publication date: 20220114 |