CN115010742A - 一种蓝光吸收剂及基于其的硅水凝胶角膜接触镜和应用 - Google Patents
一种蓝光吸收剂及基于其的硅水凝胶角膜接触镜和应用 Download PDFInfo
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Abstract
本发明涉及一种蓝光吸收剂及基于其的硅水凝胶角膜接触镜和应用,以N‑Boc对苯二胺及苯酚为起始原料,经重氮取代,酯化反应,脱Boc,最后开环加成,反应得到目标化合物。所得蓝光吸收剂与硅水凝胶聚合液相容性好,同时与另一蓝光吸收剂配合使用,可以很好地共聚得到高蓝光阻断率的硅水凝胶隐形眼镜,在抗蓝光的同时实现紫外线的高效吸收。
Description
技术领域
本发明涉及有机合成领域,尤其涉及一种蓝光吸收剂及基于其的硅水凝胶角膜接触镜和应用。
背景技术
近年来,人们非常关注蓝光对视网膜的潜在危害。有害蓝光主要是指波长为400~450nm的高能量可见光,可直达视网膜,不会被眼角膜或晶状体吸收。专利CN202010725262.X提供了一种防蓝光隐形眼镜、其组合物及制造方法,通过调整颜料配比实现防蓝光效果;专利CN103026267A公开了一种具有UV吸收剂和蓝光生色团的组合的眼内透镜,将式A或B所示物质作为蓝光阻断剂与紫外吸收剂搭配使用。而包括以上蓝光吸收剂在内的现有添加剂加入硅水凝胶配方中所得镜片则不能得到理想的结果。因此,仍需寻找一种适用于硅水凝胶角膜接触镜的蓝光吸收剂。
发明内容
为解决上述技术问题,本发明提供了一种蓝光吸收剂,通过在蓝光吸收剂分子中引入硅烷及更多的亲水官能团,改善了其与硅水凝胶共聚物的相容性,同时加入式II所示蓝光吸收剂,增强了各波段的蓝光吸收效果,进而得到具有极佳蓝光阻断效果的硅水凝胶隐形眼镜。
本发明的第一个目的是提供一种蓝光吸收剂,该蓝光吸收剂包括式I所示化合物:
其中,R选自甲基、乙基、丙基或三甲基硅氧基。
进一步地,上述蓝光吸收剂还包括式II所示化合物:
进一步地,式I所示化合物由以下步骤制备得到:
S1、将N-Boc对苯二胺与亚硝酸盐和无机酸反应得到式III所示化合物;
S2、将式III所示化合物与苯酚在碱性条件下反应,并经酸化得到式IV所示化合物;
S3、将式IV所示化合物与甲基丙烯酰氯在有机碱存在的条件下反应得到式V所示化合物;
S4、将式V所示化合物脱保护得到式VI所示化合物;
S5、将式VI所示化合物与式VII所示化合物进行加成反应得到上述式I所示化合物;
其中,X为无机酸中的阴离子,R选自甲基、乙基、丙基或三甲基硅氧基。
进一步地,在步骤S1中,反应温度为0~5℃。
进一步地,在步骤S2中,碱性条件由无机碱水溶液提供,其中,无机碱为NaOH、KOH、K2CO3、Na2CO3、KHCO3和NaHCO3中的至少一种。
进一步地,在步骤S2中,反应温度为-10~20℃。
进一步地,N-Boc对苯二胺、苯酚、亚硝酸盐、无机酸和无机碱的摩尔比为1:1.05:1.2~1.5:2.3~2.5:2.6~3。
进一步地,在步骤S3中,有机碱为三乙胺、N,N-二异丙基乙胺和4-二甲氨基吡啶中的至少一种。
进一步地,在步骤S3中,式IV所示化合物、甲基丙烯酰氯和有机碱的摩尔比为1:1.2~1.5:2~3。
进一步地,在步骤S3中,反应温度为0~5℃。
进一步地,在步骤S4中,将式V所示化合物溶于溶剂中,搅拌下加入含盐酸气体的有机溶剂,反应后得到式VI所示化合物。
进一步地,在步骤S4中,式V所示化合物与盐酸的摩尔比为1:2~4。
进一步地,在步骤S4中,反应温度为10~20℃。
进一步地,溶剂为四氢呋喃、二氯甲烷、三氯甲烷和乙酸乙酯中的至少一种,优选乙酸乙酯;含盐酸气体的有机溶剂为HCl/EtOAc、HCl/EtOAc、HCl/MeOH或HCl/dioxane(1,4-二氧六环),优选HCl浓度为3mol/L。
进一步地,在步骤S5中,将式VI所示化合物溶于溶剂中,加入有机碱和式VII所示化合物,在催化剂存在的条件下进行加成反应。其中,溶剂包括但不限于四氢呋喃、二氯甲烷、甲苯、DMF(N,N-二甲基甲酰胺)、二氧六环等;有机碱为TEA(三乙胺)、DIPEA(N,N-二异丙基乙胺)等,催化剂为三氟甲磺酸铝:Al(OTf)3或杂多酸:H3[P(W3O10)4].xH2O(结晶水个数无特别要求)。
进一步地,在步骤S5中,式VI所示化合物、式VII所示化合物和有机碱的摩尔比为1:1.05~1.2:1.5~2.5,催化剂的加入量为式VI所示化合物质量的0.1%~0.8%。
进一步地,在步骤S5中,反应温度为20~40℃。
本发明的第二个目的是提供一种用于制备硅水凝胶角膜接触镜的组合物,该组合物中包括上述蓝光吸收剂。
进一步地,蓝光吸收剂中,式I所示化合物的加入量为组合物总重量的0.1~1.0%,式II所示化合物的加入量为组合物总重量的0.1~0.3%。最优选为式I所示化合物的加入量为组合物总重量的0.4%,式II所示化合物的加入量为组合物总重量的0.1%。
本发明的第三个目的是提供上述蓝光吸收剂在紫外线吸收中的应用。
借由上述方案,本发明至少具有以下优点:
(1)本发明的蓝光吸收剂引入了有机硅基团,大大改善了与大分子硅的工具能力,使蓝光吸收剂与硅水凝胶聚合液有很好的相容性,可以轻松得到高蓝光滤除率的硅水凝胶隐形眼镜,且制备方法反应条件温和,工艺操作简单,具有成本低,产率高,产品纯度高等优点,适合工业化生产。
(2)在引入有机硅基团的基础上,本发明还提供了一种蓝光吸收剂组合物,两者协同发挥蓝光吸收功能,使硅水凝胶隐形眼镜在各波段的蓝光透过率都明显降低,这是目前的蓝光吸收剂都无法达到的效果。
上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,并可依照说明书的内容予以实施,以下以本发明的较佳实施例说明如后。
具体实施方式
下面结合具体实施例对本发明作进一步说明,以使本领域的技术人员可以更好地理解本发明并能予以实施,但所举实施例不作为对本发明的限定。
本发明提供一种可用于硅水凝胶隐形眼镜的蓝光吸收剂的制备方法,所述制备方法以N-Boc对苯二胺及苯酚为起始原料经:重氮取代,酯化反应,脱Boc,最后开环加成,反应得到目标化合物。一合成路线如下:
(1)N-Boc对苯二胺在低温下与亚硝酸钠,盐酸反应生成重氮盐中间体直接用于下一步反应;
(2)将苯酚加入碱液中,低温滴加步骤(1)反应所得溶液。反应完成后经酸化,过滤,洗涤,干燥得到中间体B;
(3)将中间体B溶于碱液中,低温滴加甲基丙烯酰氯。反应完成后经洗涤,干燥,重结晶得到中间体C;
(4)将中间体C溶于有机溶剂中,搅拌下慢慢加入含盐酸气体的有机溶剂。反应完成后经过滤,洗涤,干燥得到中间体D;
(5)将中间体D溶于有机溶剂中,加入有机碱后与缩水甘油醚加成反应得到最终化合物。经过滤,重结晶得到合格目标化合物。
实施例1
以上目标化合物的制备方法如下:
步骤一:
50L反应釜中加入自来水(15kg),N-Boc对苯二胺(6kg),将反应温度降温至0度。同时将亚硝酸钠(2.39kg)溶解于自来水(6kg)中,并将其加入高位槽一中;另外,将浓度为34%:的工业盐酸(3.716kg)加入高位槽二中。然后,将亚硝酸钠溶液及盐酸同时滴加入反应釜中,控制液温在0~5度,3小时内匀速加完亚硝酸钠,2.8小时内匀速加完高位槽二中的盐酸。滴加完后保持反应温度小于5℃继续反应(一般反应0.5h~1h),TLC(PE:EA=4:1,碘显色)跟踪反应完成后,反应液保持液温小于5℃,并在3小时内用于步骤二。
步骤二:
100L反应釜中加入自来水(30kg),氢氧化钠(3.47kg),氢氧化钠溶解后加入苯酚(2.847kg)。将反应液温度降温至5度后,滴加入步骤一所得反应液,控温小于10℃,滴加耗时约2小时。滴加完毕后,继续反应2小时。反应完成后,加工业盐酸调节反应液pH至5后,过滤,滤饼充分用水洗涤,干燥,得到中间体B:8.57kg。外观:土黄色粉末,HPLC纯度:97.9%。(检测条件:色谱柱:伊力特Hyper ODS2 150*4.6 5um;流动相:甲醇:水=75:25;检测波长:324nm;样品浓度:500ppm;流速:0.8ml/min;Rt=4.6min)。
步骤三:
100L反应釜中加入无水二氯甲烷(35L),三乙胺(4.11kg),最后加入中间体B(8.50kg),溶解后得到黄褐色反应液。氮气保护下将反应液降温至0度,将甲基丙烯酰氯(3.39kg)滴加入反应液中,控温0~5度,滴加耗时约2小时。滴加完成后保温反应1h,TLC(PE:EA=4:1,碘显色)跟踪中间体B反应完全后。加入10L自来水搅拌1小时后,分出下层有机相,加入无水硫酸钠干燥,过滤,浓缩得到中间体C:9830g.外观:黄色粉末(略带黑色),HPLC纯度:93.4%(不用纯化,可直接用于下一步反应)。(检测条件:色谱柱:伊力特HyperODS2 150*4.6 5um;流动相:甲醇:水=75:25;检测波长:324nm;样品浓度:500ppm;流速:0.8ml/min;Rt=8.6min)。
步骤四:
100L反应釜中加入乙酸乙酯:45L,再加入中间体C:9.0kg。反应液降温至10度后,向反应液中滴加3mol/L的盐酸乙酸乙酯溶液:15.7L。滴加过程中会产生大量的气体,需要控制滴加速度,一般1.5h滴毕。滴加完成后,回温至20度后再搅拌5h,直到反应完全。反应液在氮气保护下抽滤,滤饼用乙酸乙酯洗涤(500ml*3),滤饼干燥得到得到中间体D:6.37kg.外观:黄红色粉末,HPLC纯度:96.2%。(检测条件:色谱柱:伊力特Hyper ODS2 150*4.65um;流动相:甲醇:水(0.1%氨水)=75:25;检测波长:324nm;样品浓度:500ppm;流速:0.6ml/min;Rt=2.6min)。
步骤五:
50L反应釜中加入二氯甲烷(30L),中间体D(6.0kg),再加入TEA(2.86kg)。加完搅拌0.5h,再加入催化剂三氟甲磺酸铝(6g),同时将反应液升至30度。最后,加入(3-缩水甘油醚氧基丙基)双(三甲基硅氧基)甲基硅烷(6.667kg),保温搅拌6h后,TLC(PE:EA=4:1,碘显色)跟踪中间体D反应完全后停止反应,反应液降温至20度.
向反应液加入10L自来水搅拌1小时后,分出下层有机相,加入无水硫酸钠干燥,过滤,浓缩除去二氯甲烷,然后加入1700ml乙酸乙酯加热溶解后,加入600g粉末状活性炭。加热至65度,搅拌30min后,用0.45um孔径压滤器过滤,滤液冷却(10度)搅拌析晶,过滤,滤饼干燥得到8.25kg橘黄色粉末.HPLC检测纯度99%。再将固体加入50L反应釜中,加入15000ml无水乙醇50度搅拌5h后,冷却(10度)搅拌,过滤,滤饼干燥得到7.7kg橘黄色粉末,HPLC检测纯度99.75%,最大单杂含量小于0.2%。(检测条件:色谱柱:伊力特Hyper ODS2 150*4.65um;流动相:甲醇:水=80:20;检测波长:324nm;样品浓度:500ppm;流速:0.8ml/min;Rt=9.2min)。1H NMR(CDCl3,400MHz):δ(ppm)0.04-0.08(m,18H),0.1(s,3H),0.88(t,2H,J=7.6Hz),1.32-1.42(m,2H),1.87(s,3H),3.41(2H,t,J=7.2Hz),3.44-3.47(m,2H),3.57(d,2H,J=5.2Hz),3.76-3.96(m,1H),5.61(1H,d,J=1.6Hz),6.12(1H,d,J=1.6Hz),6.62-7.93(m,8H).
实施例2
以上目标化合物的制备方法如下:
步骤一:
50L反应釜中加入自来水(15kg),N-Boc对苯二胺(6kg),将反应温度降温至0度。同时将亚硝酸钠(2.786kg)溶解于自来水(6kg)中,并将其加入高位槽一中;另外,将浓度为34%:的工业盐酸(4.335kg)加入高位槽二中。然后,将亚硝酸钠溶液及盐酸同时滴加入反应釜中,控制液温在-10~0度,5小时内匀速加完亚硝酸钠,4.5小时内匀速加完高位槽二中的盐酸。滴加完后保持反应温度小于0℃继续反应(一般反应0.5h~1h),TLC(PE:EA=4:1,碘显色)跟踪反应完成后,反应液保持液温小于0℃直接用于步骤二。
步骤二:
100L反应釜中加入自来水(30kg),氢氧化钠(1.73kg),碳酸氢钠(3.63kg)固体溶解后加入苯酚(2.847kg)。将反应液温度降温至-10度后,滴加入步骤一所得反应液,控温小于0℃,滴加耗时约4小时。滴加完毕后,保温10度以内继续反应2小时。反应完成后,加工业盐酸调节反应液pH至5后,过滤,滤饼充分用水洗涤,干燥,得到中间体B:8.67kg。外观:土黄色粉末,HPLC纯度:98.5%。(检测条件:同实施例一)。
步骤三:
100L反应釜中加入无水二氯甲烷(35L),二异丙基乙胺(6.66kg),最后加入中间体B(8.50kg),溶解后得到黄褐色反应液。氮气保护下将反应液降温至0度,将甲基丙烯酰氯(3.95kg)滴加入反应液中,控温0~5度,滴加耗时约2小时。滴加完成后保温反应1h,TLC(PE:EA=4:1,碘显色)跟踪中间体B反应完全后。加入10L自来水搅拌1小时后,分出下层有机相,加入无水硫酸钠干燥,过滤,浓缩得到中间体C:9670g.外观:黄色粉末(略带黑色),HPLC纯度:93.1%(不用纯化,可直接用于下一步反应)。(检测条件:同实施例一)。
步骤四:
100L反应釜中加入四氢呋喃:30L,再加入中间体C:9.0kg。反应液降温至10度后,向反应液中滴加3mol/L的盐酸二氧六环溶液:27.5L。滴加过程中会产生大量的气体,需要控制滴加速度,一般1.5h滴毕。滴加完成后,回温至20度后再搅拌5h,直到反应完全。反应液在氮气保护下抽滤,滤饼用四氢呋喃洗涤,滤饼干燥得到得到中间体D:6.12kg.外观:黄红色粉末,HPLC纯度:97.6%。(检测条件:同实施例一)。
步骤五:
50L反应釜中加入四氢呋喃(30L),中间体D(6.0kg),再加入TEA(4.77kg)。加完搅拌0.5h,再加入催化剂杂多酸(36g),同时将反应液升至40度。最后,加入(3-缩水甘油醚氧基丙基)三(三甲基硅氧基)硅烷(8.6kg),保温搅拌6h后,TLC(PE:EA=4:1,碘显色)跟踪中间体D反应完全后停止反应,反应液降温至20度.
向反应液加入慢慢120L自来水后(约2h),搅拌1小时后,过滤,得到褐色固体,滤饼用(甲醇:水=500ml:500ml)洗涤,最后干燥得到粗品12.3kg.粗品加入50L反应釜中,然后加入2000ml乙酸乙酯加热溶解后,加入600g粉末状活性炭。加热至65度,搅拌30min后,用0.45um孔径压滤器过滤,滤液冷却(10度)搅拌析晶,过滤,滤饼干燥得到8.75kg橘黄色粉末.HPLC检测纯度99.5%,最大单杂含量小于0.2%。(检测条件:同实施例一)。1H NMR(CDCl3,400MHz):δ(ppm)0.04-0.08(m,27H),0.68(t,2H,J=7.6Hz),1.52-1.72(m,2H),1.97(s,3H),3.32(2H,t,J=7.2Hz),3.40-3.47(m,2H),3.50(d,2H,J=5.2Hz),3.79-3.95(m,1H),5.60(1H,d,J=1.6Hz),6.10(1H,d,J=1.6Hz),6.60-7.96(m,8H).
实施例3镜片的制备
1号镜片的制备:
选取250ml圆底烧瓶,依次加入硅氧烷单体1(CAS号:146632-07-7)15份、硅氧烷单体2(CAS号:17096-07-0)10份、硅氧烷单体2(CAS号:69861-02-5)15份、亲水性单体1(CAS号:88-12-0)25份、亲水性单体2(CAS号:3195-78-6)25份、交联剂(CAS号:97-90-5):2份、引发剂(CAS号:78-67-1):0.5%,蓝光吸收剂一(本发明,实施例1化合物):0.5%。加毕后搅拌60分钟,然后进行过滤,注液,热聚合成型,水化脱模,灭菌得1号镜片。
2号镜片的制备:
选取250ml圆底烧瓶,依次加入硅氧烷单体1(CAS号:146632-07-7)15份、硅氧烷单体2(CAS号:17096-07-0)10份、硅氧烷单体2(CAS号:69861-02-5)15份、亲水性单体1(CAS号:88-12-0)25份、亲水性单体2(CAS号:3195-78-6)25份、交联剂(CAS号:97-90-5):2份、引发剂(CAS号:78-67-1):0.5%,抗紫外剂(UV416,CAS号:16432-81-8):1.5%。加毕后搅拌60分钟,然后进行过滤,注液,热聚合成型,水化脱模,灭菌得2号镜片。
3号镜片的制备:
选取250ml圆底烧瓶,依次加入硅氧烷单体1(CAS号:146632-07-7)15份、硅氧烷单体2(CAS号:17096-07-0)10份、硅氧烷单体2(CAS号:69861-02-5)15份、亲水性单体1(CAS号:88-12-0)25份、亲水性单体2(CAS号:3195-78-6)25份、交联剂(CAS号:97-90-5):2份、引发剂(CAS号:78-67-1):0.5%,蓝光吸收剂一(本发明,实施例2化合物):0.5%。加毕后搅拌60分钟,然后进行过滤,注液,热聚合成型,水化脱模,灭菌得3号镜片。
4号镜片的制备:
选取250ml圆底烧瓶,依次加入硅氧烷单体1(CAS号:146632-07-7)15份、硅氧烷单体2(CAS号:17096-07-0)10份、硅氧烷单体2(CAS号:69861-02-5)15份、亲水性单体1(CAS号:88-12-0)25份、亲水性单体2(CAS号:3195-78-6)25份、交联剂(CAS号:97-90-5):2份、引发剂(CAS号:78-67-1):0.5%,蓝光吸收剂一(本发明,实施例1化合物):0.3%、蓝光吸收剂二(CAS:98809-58-6):0.2%。加毕后搅拌60分钟,然后进行过滤,注液,热聚合成型,水化脱模,灭菌得4号镜片。
5号镜片的制备:
选取250ml圆底烧瓶,依次加入硅氧烷单体1(CAS号:146632-07-7)15份、硅氧烷单体2(CAS号:17096-07-0)10份、硅氧烷单体2(CAS号:69861-02-5)15份、亲水性单体1(CAS号:88-12-0)25份、亲水性单体2(CAS号:3195-78-6)25份、交联剂(CAS号:97-90-5):2份、引发剂(CAS号:78-67-1):0.5%,蓝光吸收剂(本发明,实施例2化合物):0.4%、蓝光吸收剂二(CAS:98809-58-6):0.1%。加毕后搅拌60分钟,然后进行过滤,注液,热聚合成型,水化脱模,灭菌得3号镜片。
对比例1
选取250ml圆底烧瓶,依次加入硅氧烷单体1(CAS号:146632-07-7)15份、硅氧烷单体2(CAS号:17096-07-0)10份、硅氧烷单体2(CAS号:69861-02-5)15份、亲水性单体1(CAS号:88-12-0)25份、亲水性单体2(CAS号:3195-78-6)25份、交联剂(CAS号:97-90-5):2份、引发剂(CAS号:78-67-1):0.5%,蓝光吸收剂一(4-(phenyldiazenyl)phenyl-2-methacrylate):0.5%。加毕后搅拌60分钟,然后进行过滤,注液,热聚合发现无法成型。
选取250ml圆底烧瓶,依次加入硅氧烷单体1(CAS号:146632-07-7)15份、硅氧烷单体2(CAS号:17096-07-0)10份、硅氧烷单体2(CAS号:69861-02-5)15份、亲水性单体1(CAS号:88-12-0)25份、亲水性单体2(CAS号:3195-78-6)25份、交联剂(CAS号:97-90-5):2份、引发剂(CAS号:78-67-1):0.5%,蓝光吸收剂一(式II所示化合物,(2-(2H-benzotriazol-2-yl)-4-methyl-6-(2-methylprop-2-en-1-yl)phenol)):0.5%。加毕后搅拌60分钟,然后进行过滤,注液,热聚合发现无法成型。
具体表现为,在硅水凝胶配方中加入0.5%以上两种蓝光吸收剂后均不能得到形态完整的镜片,只能得到表面发粘且形态不规整的聚合物,所得镜片理化参数稳定性变差。实验中发现,0.2%式Ⅱ所示蓝光吸收剂的加入就会降低硅水凝胶镜片的聚合度,所得镜片理化参数稳定性变差,再降低加入量则不能起到好的蓝光阻断效果,而失去加入的意义。以上结果表明,这两种蓝光吸收剂单独加入硅水凝胶配方中所得镜片均不能得到理想的结果。
对比例2
选取250ml圆底烧瓶,依次加入硅氧烷单体1(CAS号:146632-07-7)15份、硅氧烷单体2(CAS号:17096-07-0)10份、硅氧烷单体2(CAS号:69861-02-5)15份、亲水性单体1(CAS号:88-12-0)25份、亲水性单体2(CAS号:3195-78-6)25份、交联剂(CAS号:97-90-5):2份、引发剂(CAS号:78-67-1):0.5%。加毕后搅拌60分钟,然后进行过滤,注液,热聚合成型,水化脱模,灭菌得6号镜片。
测试例
将制备得到的1号,2号,3号,4号,5号,6号镜片进行表一的参数对比测试,含水量,透氧系数,透过率参照国标:GBT11417.7-2012及GBT11417.5-2012进行测试。隐形眼镜的表面亲水性通过WBUT(water film break up time)评价,具体操作为:将隐形眼镜浸渍在标准生理盐水中过夜,用镊子夹住镜片一侧边缘从水面捞出,测定从水面捞出至镜片表面的水膜消失为止的时间(水膜保持时间)。通过肉眼判定水膜消失的状态。进行3次该测定,求出其平均值。
其中,Dk单位为:10-11(cm2/s)[mLO2/(mL.mmHg)];T%是该波段的平均透过率:
表1镜片测试结果
显然,上述实施例仅仅是为清楚地说明所作的举例,并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引申出的显而易见的变化或变动仍处于本发明创造的保护范围之中。
Claims (10)
4.根据权利要求3所述的蓝光吸收剂,其特征在于:在步骤S2中,碱性条件由无机碱水溶液提供,其中,无机碱为NaOH、KOH、K2CO3、Na2CO3、KHCO3和NaHCO3中的至少一种。
5.根据权利要求4所述的蓝光吸收剂,其特征在于:N-Boc对苯二胺、苯酚、亚硝酸盐、无机酸和无机碱的摩尔比为1:1.05:1.2~1.5:2.3~2.5:2.6~3。
6.根据权利要求3所述的蓝光吸收剂,其特征在于:在步骤S3中,有机碱为三乙胺、N,N-二异丙基乙胺和4-二甲氨基吡啶中的至少一种。
7.根据权利要求3所述的蓝光吸收剂,其特征在于:在步骤S3中,式IV所示化合物、甲基丙烯酰氯和有机碱的摩尔比为1:1.2~1.5:2~3。
8.权利要求1-7任一项所述的蓝光吸收剂在制备硅水凝胶角膜接触镜中的应用。
9.一种用于制备硅水凝胶角膜接触镜的组合物,其特征在于:所述组合物中包括权利要求1-7任一项所述的蓝光吸收剂。
10.权利要求1-7任一项所述的蓝光吸收剂在紫外线吸收中的应用。
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