CN118085169B - 一种水解马来酸酐共聚物阻垢剂和制备方法 - Google Patents
一种水解马来酸酐共聚物阻垢剂和制备方法 Download PDFInfo
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- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 5
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- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 description 1
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- 125000002843 carboxylic acid group Chemical group 0.000 description 1
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- 125000006239 protecting group Chemical group 0.000 description 1
- FWFUWXVFYKCSQA-UHFFFAOYSA-M sodium;2-methyl-2-(prop-2-enoylamino)propane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(C)(C)NC(=O)C=C FWFUWXVFYKCSQA-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/04—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
- C07D295/08—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
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Abstract
本发明涉及马来酸酐共聚物技术领域,且公开了一种水解马来酸酐共聚物阻垢剂和制备方法,利用苄基‑1‑哌嗪碳酸酯、3‑氯‑2‑羟丙基磺酸钠、马来酸酐等作为反应原料,制备得到3‑哌嗪‑2‑丁烯二酸单酯基磺酸钠,然后在过硫酸钾、氢氧化钠的催化体系中,与马来酸酐发生开环共聚反应,得到新型的水解马来酸酐共聚物阻垢剂。含有的磺酸、羧基与钙离子有很强的配位螯合作用,同时哌嗪基团中的亚氨基和氮原子也有很好的配位作用,可以使水解马来酸酐共聚物阻垢剂选择性地吸附在碳酸钙、磷酸钙等晶体的表面,抑制碳酸钙、磷酸钙颗粒的结晶作用,表现出优异的阻垢性能。
Description
技术领域
本发明涉及马来酸酐共聚物技术领域,具体为一种水解马来酸酐共聚物阻垢剂和制备方法。
背景技术
水解聚马来酸酐含有大量的羧酸基团,可以与钙离子、镁离子等发生螯合作用,具有很好的阻垢分散性能、耐高温等性能,可以作为阻垢剂,在油田管道、工业循环冷却水处理等方面有广泛的应用。因此发展高阻垢性能的水解聚马来酸酐是研究热点。
目前主要是以过氧化氢等作为引发剂,金属化合物作为催化剂,采用水解法来制备水解聚马来酸酐。专利CN201510322754.3公开了利用固体超强酸作为催化剂,马来酸酐、烯丙基磺酸钠进行聚合反应,得到的阻垢剂具有较好的水溶解性和阻垢分散性;但是该专利的固体超强酸催化剂和聚合反应体系较为复杂,不利于工业化生产。本发明利用过硫酸钾、氢氧化钠作为催化体系,协同诱导马来酸酐等功能性单体进行开环共聚反应,拓展水解聚马来酸酐在阻垢剂中的应用。
发明内容
本发明解决的技术问题是:提供了一种具有高效阻垢性能的水解马来酸酐共聚物阻垢剂,可以很好的应用于阻垢剂中。
本发明的提供技术方案是:
一种水解马来酸酐共聚物阻垢剂,由如下原料制备而成:100重量份马来酸酐、20-50重量份3-哌嗪-2-丁烯二酸单酯基磺酸钠、0.8-1重量份过硫酸钾;
优选的,3-哌嗪-2-丁烯二酸单酯基磺酸钠的制备方法为:
步骤(1):将苄基-1-哌嗪碳酸酯、3-氯-2-羟丙基磺酸钠、三乙胺、乙醇加入到烧瓶中,进行反应,旋转蒸发,产物洗涤后重结晶,得到中间体1;。
步骤(2):将中间体1、马来酸酐、甲苯加入到烧瓶中,在60-75℃的温度下反应4-8h,旋转蒸发,产物用水洗涤,然后加入到反应釜中,再加入氢溴酸的醋酸溶液,20-35℃的温度下反应6-10h,加入蒸馏水,析出沉淀物,过滤后沉淀物洗涤、重结晶,得到3-哌嗪-2-丁烯二酸单酯基磺酸钠。
优选的,步骤(1)中3-氯-2-羟丙基磺酸钠、三乙胺的质量分别是苄基-1-哌嗪碳酸酯质量的95-110%、45-60%。
优选的,步骤(1)中反应在70-80℃的温度下进行4-8h。
优选的,步骤(2)中马来酸酐的质量是中间体1质量的32-46%。
优选的,水解马来酸酐共聚物阻垢剂的制备方法为:将马来酸酐、3-哌嗪-2-丁烯二酸单酯基磺酸钠、水加入到反应釜中,升温至90-95℃,搅拌混匀后再升温至100-105℃,滴加质量分数为40-50%的氢氧化钠水溶液,滴加完毕后搅拌20-40min,再加入过硫酸钾催化剂,保温反应2-3小时,最后滴加质量分数为30-37%的盐酸溶液,混匀后将溶液冷却,倒入进甲醇中,析出沉淀物,抽滤、洗涤滤饼,得到水解马来酸酐共聚物阻垢剂。
本申请具有以下有益效果:利用苄基-1-哌嗪碳酸酯、3-氯-2-羟丙基磺酸钠、马来酸酐等作为反应原料,经过取代、马来酸酐酯化、氢溴酸的醋酸体系脱除CBz保护基的反应,制备得到3-哌嗪-2-丁烯二酸单酯基磺酸钠,然后在过硫酸钾、氢氧化钠的催化体系中,协同诱导3-哌嗪-2-丁烯二酸单酯基磺酸钠与马来酸酐发生开环共聚反应,得到新型的水解马来酸酐共聚物阻垢剂。实现了将哌嗪、磺酸、羧基等基团引入到马来酸酐共聚物的分子链中。同时在聚合反应体系中利用氢氧化钠的酸碱中和反应放热的原理,为反应过程提供热量,起到减少能源消耗的效果;最后用盐酸进行中和并调节pH,从而得到高性能的水解马来酸酐共聚物阻垢剂。
本发明水解马来酸酐共聚物中含有的磺酸、羧基与钙离子有很强的配位螯合作用,同时哌嗪基团中的亚氨基和氮原子也有很好的配位作用,可以使水解马来酸酐共聚物阻垢剂选择性地吸附在碳酸钙、磷酸钙等晶体的表面,抑制碳酸钙、磷酸钙颗粒的结晶作用,使碳酸钙垢、磷酸钙垢晶粒变得蓬松,易被水流冲洗,从而表现出优异的阻碳酸钙垢和阻磷酸钙垢性能。
附图说明
图1是制备3-哌嗪-2-丁烯二酸单酯基磺酸钠的反应式。
具体实施方式
以下结合实施例对本申请作进一步详细说明,予以特别说明的是:以下实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行,以下实施例中所用原料除特殊说明外均可来源于普通市售。
实施例1
步骤(1):将1kg苄基-1-哌嗪碳酸酯、1.1kg的3-氯-2-羟丙基磺酸钠、0.6kg三乙胺、18L乙醇加入到烧瓶中,在70℃的温度下反应6h,旋转蒸发,产物用水洗涤,然后用乙醇重结晶,得到中间体1。
步骤(2):将2kg中间体1、0.76kg马来酸酐、26L甲苯加入到烧瓶中,在60℃的温度下反应8h,旋转蒸发,产物用水洗涤,然后加入到反应釜中,再加入65L质量分数为33%的氢溴酸的醋酸溶液,20℃的温度下反应10h,加入蒸馏水,析出沉淀物,过滤后沉淀物用质量分数2%的碳酸氢钠溶液洗涤,然后用乙醇重结晶,得到3-哌嗪-2-丁烯二酸单酯基磺酸钠。
步骤(3):将50kg马来酸酐、10kg的3-哌嗪-2-丁烯二酸单酯基磺酸钠、100kg水加入到反应釜中,升温至95℃,搅拌混匀后再升温至100℃,滴加质量分数为40%的氢氧化钠水溶液(水溶液的总质量为80kg),滴加完毕后搅拌30min,再加入0.4kg过硫酸钾催化剂,保温反应2小时,最后滴加质量分数为30%的盐酸溶液调节pH至3,混匀后将溶液冷却,倒入进甲醇中,析出沉淀物,抽滤、洗涤滤饼,得到水解马来酸酐共聚物阻垢剂。
实施例2
步骤(1):将1kg苄基-1-哌嗪碳酸酯、0.95kg的3-氯-2-羟丙基磺酸钠、0.45kg三乙胺、10L乙醇加入到烧瓶中,在80℃的温度下反应4h,旋转蒸发,产物用水洗涤,然后用乙醇重结晶,得到中间体1。
步骤(2):将2kg中间体1、0.64kg马来酸酐、20L甲苯加入到烧瓶中,在60℃的温度下反应5h,旋转蒸发,产物用水洗涤,然后加入到反应釜中,再加入65L质量分数为33%的氢溴酸的醋酸溶液,25℃的温度下反应10h,加入蒸馏水,析出沉淀物,过滤后沉淀物用质量分数2%的碳酸氢钠溶液洗涤,然后用乙醇重结晶,得到3-哌嗪-2-丁烯二酸单酯基磺酸钠。
步骤(3):将50kg马来酸酐、18kg的3-哌嗪-2-丁烯二酸单酯基磺酸钠、100kg水加入到反应釜中,升温至95℃,搅拌混匀后再升温至105℃,滴加质量分数为50%的氢氧化钠水溶液(水溶液的总质量80kg),滴加完毕后搅拌40min,再加入0.46kg过硫酸钾催化剂,保温反应2小时,最后滴加质量分数为37%的盐酸溶液调节pH至2,混匀后将溶液冷却,倒入进甲醇中,析出沉淀物,抽滤、洗涤滤饼,得到水解马来酸酐共聚物阻垢剂。
实施例3
步骤(1):将1kg苄基-1-哌嗪碳酸酯、0.95kg的3-氯-2-羟丙基磺酸钠、0.52kg三乙胺、10L乙醇加入到烧瓶中,在70℃的温度下反应8h,旋转蒸发,产物用水洗涤,然后用乙醇重结晶,得到中间体1。
步骤(2):将2kg中间体1、0.92kg马来酸酐、30L甲苯加入到烧瓶中,在75℃的温度下反应4h,旋转蒸发,产物用水洗涤,然后加入到反应釜中,再加入65L质量分数为33%的氢溴酸的醋酸溶液,35℃的温度下反应6h,加入蒸馏水,析出沉淀物,过滤后沉淀物用质量分数2%的碳酸氢钠溶液洗涤,然后用乙醇重结晶,得到3-哌嗪-2-丁烯二酸单酯基磺酸钠。
步骤(3):将50kg马来酸酐、25kg的3-哌嗪-2-丁烯二酸单酯基磺酸钠、100kg水加入到反应釜中,升温至90℃,搅拌混匀后再升温至105℃,滴加质量分数为50%的氢氧化钠水溶液(水溶液的总质量80kg),滴加完毕后搅拌40min,再加入0.5kg过硫酸钾催化剂,保温反应3小时,最后滴加质量分数为37%的盐酸溶液调节pH至2,混匀后将溶液冷却,倒入进甲醇中,析出沉淀物,抽滤、洗涤滤饼,得到水解马来酸酐共聚物阻垢剂。
对比例1和实施例1的不同的是,制备水解聚马来酸酐阻垢剂时,不加入3-哌嗪-2-丁烯二酸单酯基磺酸钠。
将50kg马来酸酐、100kg水加入到反应釜中,升温至95℃,搅拌混匀后再升温至100℃,滴加质量分数为40%的氢氧化钠水溶液(水溶液的总质量80kg),滴加完毕后搅拌30min,再加入0.4kg过硫酸钾催化剂,保温反应2小时,最后滴加质量分数为30%的盐酸溶液调节pH至3,混匀后将溶液冷却,倒入进甲醇中,析出沉淀物,抽滤、洗涤滤饼,得到水解聚马来酸酐阻垢剂。
对比例2和实施例1的不同的是,制备水解马来酸酐共聚物阻垢剂时,用常规的2-丙烯酰胺基-2-甲基丙磺酸钠盐(结构式为)代替3-哌嗪-2-丁烯二酸单酯基磺酸钠。
将50kg马来酸酐、10kg的2-丙烯酰胺基-2-甲基丙磺酸钠盐、100kg水加入到反应釜中,升温至95℃,搅拌混匀后再升温至100℃,滴加质量分数为40%的氢氧化钠水溶液(水溶液的总质量80kg),滴加完毕后搅拌30min,再加入0.4kg过硫酸钾催化剂,保温反应2小时,最后滴加质量分数为30%的盐酸溶液调节pH至3,混匀后将溶液冷却,倒入进甲醇中,析出沉淀物,抽滤、洗涤滤饼,得到水解马来酸酐共聚物阻垢剂。
按GB/T 16632-2019和GB/T 22626-2008测试阻垢剂对碳酸钙和磷酸钙的阻垢性能。测试结果见表1-2的内容。
表1阻垢剂对碳酸钙阻垢率测试
表2阻垢剂对磷酸钙阻垢率测试
本发明的实施例利用过硫酸钾、氢氧化钠作为催化体系,协同诱导3-哌嗪-2-丁烯二酸单酯基磺酸钠与马来酸酐发生开环共聚反应,得到新型的水解马来酸酐共聚物阻垢剂,实现了将哌嗪、磺酸、羧基等基团引入到马来酸酐共聚物的分子链中,磺酸、羧基与钙离子有很强的配位螯合作用,同时哌嗪基团中的亚氨基和氮原子也有很好的配位作用,可以使水解马来酸酐共聚物阻垢剂选择性地吸附在碳酸钙、磷酸钙等晶体的表面,抑制碳酸钙、磷酸钙颗粒的结晶作用,使碳酸钙垢、磷酸钙垢晶粒变得蓬松,易被水流冲洗,从而表现出优异的阻碳酸钙垢和阻磷酸钙垢性能。
对比例1没有加入3-哌嗪-2-丁烯二酸单酯基磺酸钠,马来酸酐发生开环聚合反应,得到的水解聚马来酸酐阻垢剂不含有磺酸、哌嗪等基团,与钙离子的配位螯合作用较低,导致其碳酸钙、磷酸钙的阻垢率低于实施例1。
对比例2,用常规的2-丙烯酰胺基-2-甲基丙磺酸钠盐代替3-哌嗪-2-丁烯二酸单酯基磺酸钠,得到的水解马来酸酐共聚物阻垢剂不含有哌嗪等基团,其碳酸钙、磷酸钙的阻垢率不佳,低于实施例1。
Claims (7)
1.一种水解马来酸酐共聚物阻垢剂,其特征在于,所述水解马来酸酐共聚物阻垢剂由如下原料制备而成:100重量份马来酸酐、20-50重量份3-哌嗪-2-丁烯二酸单酯基磺酸钠和0.8-1重量份过硫酸钾;
所述3-哌嗪-2-丁烯二酸单酯基磺酸钠的制备方法为:
步骤(1):将苄基-1-哌嗪碳酸酯、3-氯-2-羟丙基磺酸钠、三乙胺、乙醇加入到烧瓶中,进行反应,旋转蒸发,产物洗涤后重结晶,得到中间体1;
步骤(2):将中间体1、马来酸酐、甲苯加入到烧瓶中,在60-75℃的温度下反应4-8h,旋转蒸发,产物用水洗涤,然后加入到反应釜中,再加入氢溴酸的醋酸溶液,20-35℃的温度下反应6-10h,加入蒸馏水,析出沉淀物,过滤后沉淀物洗涤,重结晶,得到3-哌嗪-2-丁烯二酸单酯基磺酸钠;
在过硫酸钾、氢氧化钠的催化体系中,协同诱导3-哌嗪-2-丁烯二酸单酯基磺酸钠与马来酸酐发生开环共聚反应,最后用盐酸进行中和并调节pH,从而得到所述水解马来酸酐共聚物阻垢剂。
2.根据权利要求1所述的水解马来酸酐共聚物阻垢剂,其特征在于,所述步骤(1)中3-氯-2-羟丙基磺酸钠、三乙胺的质量分别是苄基-1-哌嗪碳酸酯质量的95-110%、45-60%。
3.根据权利要求1所述的水解马来酸酐共聚物阻垢剂,其特征在于,所述步骤(1)中反应在70-80℃的温度下进行4-8h。
4.根据权利要求1所述的水解马来酸酐共聚物阻垢剂,其特征在于,所述步骤(2)中马来酸酐的质量是中间体1质量的32-46%。
5.一种如权利要求1-4任一项所述的水解马来酸酐共聚物阻垢剂的制备方法,其特征在于,所述制备方法为:将马来酸酐、3-哌嗪-2-丁烯二酸单酯基磺酸钠、水加入到反应釜中,升温至90-95℃,搅拌混匀后再升温至100-105℃,滴加氢氧化钠水溶液,滴加完毕后搅拌20-40min,再加入过硫酸钾催化剂,保温反应2-3小时,最后滴加盐酸溶液,混匀后将溶液冷却,倒入进甲醇中,析出沉淀物,抽滤、洗涤滤饼,得到水解马来酸酐共聚物阻垢剂。
6.根据权利要求5所述的水解马来酸酐共聚物阻垢剂的制备方法,其特征在于,所述氢氧化钠水溶液的质量分数为40-50%。
7.根据权利要求5所述的水解马来酸酐共聚物阻垢剂的制备方法,其特征在于,所述盐酸溶液的质量分数为30-37%。
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