CN108864424A - 一种聚合型直链受阻胺光稳定剂及其制备方法 - Google Patents

一种聚合型直链受阻胺光稳定剂及其制备方法 Download PDF

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CN108864424A
CN108864424A CN201810594996.1A CN201810594996A CN108864424A CN 108864424 A CN108864424 A CN 108864424A CN 201810594996 A CN201810594996 A CN 201810594996A CN 108864424 A CN108864424 A CN 108864424A
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light stabilizer
straight chain
hindered amine
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张超
祝君威
张跃
杨少伟
蔡广超
蔡朦
张周裔乐
刘旭
谢胜利
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Suqian Liansheng Technology Co Ltd
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Abstract

本发明属于光稳定剂制备技术领域,特别涉及一种聚合型直链受阻胺光稳定剂及其制备方法,制备方法包括以下步骤:步骤1,将有机溶剂与式Ⅱ化合物混合,在10‑20℃条件下,分别滴加己二酰氯和碱液溶液;步骤2,将步骤1的反应物在60‑120℃条件下保温反应20min‑120min,加热回流,回收溶剂,冷却,分离制得式Ⅰ化合物;其中:碱液的总体积与有机溶剂的总体积比为1:0.3‑3;己二酰氯与式Ⅱ化合物的摩尔比为1:0.8‑1.2;己二酰氯与碱液中有效碱摩尔比为1:2.1‑2.3;本发明的聚合型直链受阻胺光稳定剂与聚烯烃类树脂具有极佳的相容性,可有效保护聚烯烃材料因光照而发生降解;同时,所得直链型光稳定剂因含有酰胺键而及其适用于尼龙类材料;通过使用本发明的方法反应产量可达99%。

Description

一种聚合型直链受阻胺光稳定剂及其制备方法
技术领域
本发明属于光稳定剂制备技术领域,特别涉及一种聚合型直链受阻胺光稳定剂及其制备方法。
背景技术
受阻胺因其较强的自由基捕获功能,在高分子材料中作为光稳定剂得以广泛的使用。
聚合型光稳定剂如光稳定剂944、光稳定剂622、光稳定剂2020等,因其优异的耐析出性和防老化效果在聚烯烃材料中得以广泛的应用。但是,侧基较大也使得此类光稳定剂在树脂中的移动较慢,其使用的短期效果较差,且使其在丝织品中的使用受到了限制。
直链型光稳定剂如光稳定剂770、光稳定剂3853等,因其分子量较小,链段柔性较高,其在聚烯烃类树脂的迁移速度较快,使其短期效果较好。但是分子量较小使得此类光稳定剂容易流失,起不到长期的防老化效果。同时,在聚酰胺材料领域,当前应用较多的尼龙类光稳定剂主要有克莱恩公司开发的Nylostab SEED,该助剂的分子量较低。
发明内容
本发明解决现有技术中存在的上述技术问题,提供一种聚合型直链受阻胺光稳定剂及其制备方法。
为解决上述问题,本发明的技术方案如下:
一种聚合型直链受阻胺光稳定剂,包括结构式如式Ⅰ的化合物:
其中R1选自H、C1—C8烷基、OC1—OC8烷氧基,其中R2选自H、C1—C8烷基、OC1—OC8烷氧基,n=1-100。
上述聚合型直链受阻胺光稳定剂的制备方法,合成路线为:
其中R1选自H、C1—C8烷基、OC1—OC8烷氧基,其中R2选自H、C1—C8烷基、OC1—OC8烷氧基,n=1-100。
聚合型直链受阻胺光稳定剂的制备方法,包括以下步骤:
步骤1,将有机溶剂与式Ⅱ化合物混合,在10-20℃条件下,分别滴加己二酰氯和碱液溶液;
步骤2,将步骤1的反应物在60-120℃条件下保温反应20min-120min,加热回流,回收溶剂,冷却,分离制得式Ⅰ化合物,可根据需要延长反应以获得较大分子量的助剂;
其中:碱液的总体积与有机溶剂的总体积比为1:0.3-3;
己二酰氯与式Ⅱ化合物的摩尔比为1:0.8-1.2;
己二酰氯与碱液中有效碱摩尔比为1:2.1-2.3。
优选地,步骤1所述碱液溶液的摩尔浓度为0.15mol/L-18mol/L。
优选地,所述碱液溶液选自氢氧化钠、氢氧化钾、碳酸钠、碳酸钾的溶液。
优选地,步骤1滴加己二酰氯和碱液溶液的滴加方式为逐滴滴加,总滴加时间为1h-6h。
优选地,所述有机溶剂选自甲苯、二甲苯、二氯甲烷、三氯甲烷。
优选地,步骤1己二酰氯和碱液溶液滴加完毕后,向反应体系中加入缚酸剂和催化剂,可加快反应速率,提高效率。
优选地,所述缚酸剂选自三乙胺、吡啶、4-二甲氨基吡啶、N,N-二甲基甲酰胺。
优选地,所述选自氯化铝、氯化锌、氯化铁。
上述光稳定剂聚合型直链受阻胺光稳定剂的可以应用到聚烯烃类材料和聚酰胺类材料中,改善此类材料的光稳定性能和热稳定性能。
相对于现有技术,本发明的优点如下,
本发明的聚合型直链受阻胺光稳定剂与聚烯烃类树脂具有极佳的相容性,可有效保护聚烯烃材料因光照而发生降解;同时,所得直链型光稳定剂因含有酰胺键而及其适用于尼龙类材料;
本发明的聚合型直链受阻胺光稳定剂分子质量较大,可起到长期防老化的作用;同时直链结构使之同时具有较快的迁移速度,短期光稳定效果较好;
通过使用本发明的方法,可以制备出直链型受阻胺光稳定剂,反应产量可达99%。
附图说明
图1为本发明聚合型直链受阻胺光稳定剂的红外光谱图;
图2为老化试验样品老化对比图。
具体实施方式
实施例1:
聚合型直链受阻胺光稳定剂的制备
室温下将200g己二胺哌啶溶解于280g甲苯中,加入到1000ml四口瓶中,开启搅拌并降温至10℃。搅拌下将100g己二酰氯逐滴加入到四口瓶中,并维持体系温度在15-20℃,该过程大约持续1.5h;将液碱(片碱50g和水140g)逐滴加入到四口瓶中。滴加完后,升高四口瓶内温度到60℃,保温1h。保温结束后,升高四口瓶内温度,直到出馏,回收蒸出溶剂。当四口瓶内的物料变得很粘稠,搅拌很吃力时分两次加入500g纯净水继续蒸馏,直至体系温度升到95-100℃停止加热,冷却至室温,过滤分离。用350g水打浆洗涤粗品,过滤,并干燥得式Ⅰ化合物,收率为96%。产物分子质量为:2000—20000g/mol。
实施例2:
聚合型直链受阻胺光稳定剂的制备
室温下将200g己二胺哌啶溶解于300g二甲苯中,加入到1000ml四口瓶中,开启搅拌并降温至10℃。搅拌下将100g己二酰氯逐滴加入到四口瓶中,并维持体系温度在15-20℃。向体系中滴入5ml三乙胺。将液碱(片碱50g和水140g)逐滴加入到四口瓶中;注意控制体系温度在15-20℃。滴加完后,升高四口瓶内温度到60℃,保温0.5h。保温结束后,升高四口瓶内温度,直到出馏,回收蒸出溶剂、三乙胺和水。当四口瓶内的物料变得很粘稠,搅拌很吃力时分两次加入500g纯净水继续蒸馏,直至体系温度升到95-100℃停止加热,冷却至室温,过滤分离。用350g水打浆洗涤粗品,过滤,并干燥得式Ⅰ化合物,收率为97%。产物分子质量为:2000—20000g/mol。
实施例3:
同实施例1,仅改变反应体系中的加料比,制备聚合型直链受阻胺光稳定剂:
实施例4:
同实施例1,用氢氧化钾(浓度为0.15mol/L)、碳酸钠(浓度为1.5mol/L)、碳酸钾的溶液(浓度为18mol/L)代替氢氧化钠,制备聚合型直链受阻胺光稳定剂,收率均达到96%以上。
实施例5:
同实施例1,分别控制滴加己二酰氯和碱液溶液的总滴加时间1h、3h、6h,制备聚合型直链受阻胺光稳定剂,收率均达到96%以上。
实施例6:
同实施例1,分别选用二氯甲烷、三氯甲烷作为有机溶剂,制备聚合型直链受阻胺光稳定剂,收率均达到96%以上。
实施例7:
同实施例1,己二酰氯和碱液溶液滴加完毕后,向反应体系中加入缚酸剂和催化剂,制备聚合型直链受阻胺光稳定剂:
实施例8:
同实施例1,仅改变保温反应的时间和温度,制备聚合型直链受阻胺光稳定剂:
实施例8:
将实施例1制得的聚合型直链受阻胺光稳定剂进行红外光谱分析,红外光谱图如图1所示。
实施例9:
将实施例1制得的聚合型直链受阻胺光稳定剂用于聚丙烯(PP)树脂产品的老化试验:
需要说明的是上述实施例仅仅是本发明的较佳实施例,并没有用来限定本发明的保护范围,在上述基础上做出的等同替换或者替代均属于本发明的保护范围。

Claims (10)

1.一种聚合型直链受阻胺光稳定剂,其特征在于,结构式如式Ⅰ:
其中R1选自H、C1—C8烷基、OC1—OC8烷氧基,其中R2选自H、C1—C8烷基、OC1—OC8烷氧基,n=1-100。
2.如权利要求1所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,合成路线为:
其中R1选自H、C1—C8烷基、OC1—OC8烷氧基,其中R2选自H、C1—C8烷基、OC1—OC8烷氧基,n=1-100。
3.如权利要求2所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,包括以下步骤:
步骤1,将有机溶剂与式Ⅱ化合物混合,在10-20℃条件下,分别滴加己二酰氯和碱液溶液;
步骤2,将步骤1的反应物在60-120℃条件下保温反应20min-120min,加热回流,回收溶剂,冷却,分离制得式Ⅰ化合物;
其中:碱液的总体积与有机溶剂的总体积比为1:0.3-3;
己二酰氯与式Ⅱ化合物的摩尔比为1:0.8-1.2;
己二酰氯与碱液中有效碱摩尔比为1:2.1-2.3。
4.如权利要求3所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,步骤1所述碱液溶液的摩尔浓度为0.15mol/L-18mol/L。
5.如权利要求3所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,所述碱液溶液选自氢氧化钠、氢氧化钾、碳酸钠、碳酸钾的溶液。
6.如权利要求3所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,步骤1滴加己二酰氯和碱液溶液的滴加方式为逐滴滴加,总滴加时间为1h-6h。
7.如权利要求3所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,所述有机溶剂选自甲苯、二甲苯、二氯甲烷、三氯甲烷。
8.如权利要求3所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,步骤1己二酰氯和碱液溶液滴加完毕后,向反应体系中加入缚酸剂和催化剂。
9.如权利要求8所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,所述缚酸剂选自三乙胺、吡啶、4-二甲氨基吡啶、N,N-二甲基甲酰胺。
10.如权利要求8所述的聚合型直链受阻胺光稳定剂的制备方法,其特征在于,所述选自氯化铝、氯化锌、氯化铁。
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CN110283116A (zh) * 2019-06-27 2019-09-27 绍兴瑞康生物科技有限公司 一种新型受阻胺类光稳定剂及制备与应用
CN110283116B (zh) * 2019-06-27 2022-09-09 绍兴瑞康生物科技有限公司 一种受阻胺类光稳定剂及制备与应用

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