CAJ | 학술논문

采用三聚氯氰和苯胺-2,5-双磺酸单钠盐缩合后,再依次与DSD酸钠和吗啉进行缩合,制得荧光增白剂MST-H.反应条件:一次缩合反应温度5 ℃以下,pH值2.5～3.5;二次缩合反应温度35 ℃左右,pH值3.5～4.5;三次缩合反应温度85～90 ℃,pH值7.5～8.5.探讨了产品的紫外吸收检测条件,并和国内外同类产品进行了应用效果的比较.结果表明,该荧光增白剂适合在20 mg/L的浓度下测定其吸光度值,白度提升率与国外同类产品相类似,耐酸碱性、耐硬水性能优于同类产品,具有良好的使用性能.
채용삼취록청화분알-2,5-쌍광산단납염축합후,재의차여DSD산납화마람진행축합,제득형광증백제MST-H.반응조건:일차축합반응온도5 ℃이하,pH치2.5～3.5;이차축합반응온도35 ℃좌우,pH치3.5～4.5;삼차축합반응온도85～90 ℃,pH치7.5～8.5.탐토료산품적자외흡수검측조건,병화국내외동류산품진행료응용효과적비교.결과표명,해형광증백제괄합재20 mg/L적농도하측정기흡광도치,백도제승솔여국외동류산품상유사,내산감성、내경수성능우우동류산품,구유량호적사용성능.
The fluorescent whitening agent MST-H was synthesized from trichloro-triazine by firstly condensation with monosodium salt of aniline-2,5-disulfonic acid,and then with sodium salt of DSD acid and morpholine subsequently.The reaction conditions were controlled as: for first condensation,5 ℃ below,and pH=2.5～3.5;for second condensation,35 ℃,pH=3.5～4.5;and for third condensation,85～90 ℃,pH=7.5～8.5.The determination conditions of ultra-violet absorbency for the product were investigated,and its performance on application was compared with commercial products.The results indicated that it is suitable to determine the absorbency of MST-H agent at the concentration of 20 mg/L and below.Its performance on whiteness improvement was similar to commercial products,and had better application properties with good resistance of acid and alkaline media, and adaptability of hard water.