CN109679371B - 一种水性食品级颜料pr49:1的制备方法 - Google Patents
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- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims abstract description 18
- SJJCQDRGABAVBB-UHFFFAOYSA-N 1-hydroxy-2-naphthoic acid Chemical compound C1=CC=CC2=C(O)C(C(=O)O)=CC=C21 SJJCQDRGABAVBB-UHFFFAOYSA-N 0.000 claims abstract description 13
- SEMRCUIXRUXGJX-UHFFFAOYSA-N 6-aminonaphthalene-2-sulfonic acid Chemical compound C1=C(S(O)(=O)=O)C=CC2=CC(N)=CC=C21 SEMRCUIXRUXGJX-UHFFFAOYSA-N 0.000 claims abstract description 12
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- GWIAAIUASRVOIA-UHFFFAOYSA-N 2-aminonaphthalene-1-sulfonic acid Chemical compound C1=CC=CC2=C(S(O)(=O)=O)C(N)=CC=C21 GWIAAIUASRVOIA-UHFFFAOYSA-N 0.000 claims description 32
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- KSTGSVANFMJGGB-UHFFFAOYSA-N 2-ethylnaphthalen-1-ol Chemical compound C1=CC=CC2=C(O)C(CC)=CC=C21 KSTGSVANFMJGGB-UHFFFAOYSA-N 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
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- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 8
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- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 7
- 229910001626 barium chloride Inorganic materials 0.000 claims description 7
- 235000010288 sodium nitrite Nutrition 0.000 claims description 7
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- YAIKCRUPEVOINQ-UHFFFAOYSA-N 2-aminonaphthalene-1,5-disulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC2=C(S(O)(=O)=O)C(N)=CC=C21 YAIKCRUPEVOINQ-UHFFFAOYSA-N 0.000 description 3
- 239000000976 ink Substances 0.000 description 3
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- 239000012752 auxiliary agent Substances 0.000 description 2
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- ALKYHXVLJMQRLQ-UHFFFAOYSA-N 3-Hydroxy-2-naphthoate Chemical compound C1=CC=C2C=C(O)C(C(=O)O)=CC2=C1 ALKYHXVLJMQRLQ-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 239000000159 acid neutralizing agent Substances 0.000 description 1
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- PGSADBUBUOPOJS-UHFFFAOYSA-N neutral red Chemical compound Cl.C1=C(C)C(N)=CC2=NC3=CC(N(C)C)=CC=C3N=C21 PGSADBUBUOPOJS-UHFFFAOYSA-N 0.000 description 1
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- AZQWKYJCGOJGHM-UHFFFAOYSA-N para-benzoquinone Natural products O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B63/00—Lakes
- C09B63/005—Metal lakes of dyes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/0014—Monoazo dyes prepared by diazotising and coupling from diazotized aminonaphthalene
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- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/103—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the naphthalene series
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/103—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the naphthalene series
- C09B29/106—Hydroxy carboxylic acids of the naphthalene series
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Abstract
一种水性食品级有机颜料红49:1的制备方法,属于水性食品级有机颜料领域,制备方法包括重氮液的制备、化料液的制备、偶合反应、色淀化反应以及后处理,在重氮液的制备步骤加入第二重氮组份2‑萘胺‑6‑磺酸,在偶合液的制备步骤加入第二偶合组份1‑羟基‑2‑萘甲酸和水性颜料改性剂,得到的水性食品级有机颜料红49:1,具有更低的粘度和更高的着色力及光泽度,而且储存稳定性优良。
Description
技术领域
本发明属于水性食品包装有机颜料领域,涉及一种水性食品级颜料PR49:1的制备方法。
背景技术
目前,水性食品级颜料红49:1广泛应用在水性色浆体系,属于偶氮色淀类有机颜料,该品种为钡盐色淀,给出中性红色,颜料红49:1现有的制备工艺多为:将2-萘胺-1-磺酸用氢氧化钠溶液中溶解,再加入盐酸酸析,然后滴加亚硝酸钠溶液,反应1小时,得到重氮液;将乙萘酚用氢氧化钠溶液溶解得到偶合液;而且都采取正偶合的偶合方式,反应毕,加入氯化钡溶液进行色淀化反应,最后进行过滤,洗涤,干燥得颜料红49:1。但上述制备方法生产的颜料红49:1在水性介质中应用时粘度高,着色力低,表光差,尤其是储存稳定性差,容易发胀。
有机颜料固态溶液(或称混晶法,Mixed Crystal)法是广泛应用的有机颜料改性方法。王德云等介绍了红色偶氮色淀颜料的晶型与表面处理方法(染料工业,1995,3(32):14-21);专利CN201210358115.9中介绍了一种颜料红49:1的合成方法,其方法是加入第二重氮盐组分2-萘胺-1,5-二磺酸和非离子表面活性剂,同时在偶合反应时,加入2-羟基-3-萘甲酸作为第二偶合组分,在色淀化反应时加入聚氧化烷基胺改性剂和氯化铝色淀化试剂。
发明内容
本发明提供了一种水性食品级有机颜料红49:1的制备方法,以解决现有工艺生产的颜料红49:1在水性介质中应用时存在的粘度较高,着色力低,光泽度较差,尤其是储存稳定性差,容易发胀的问题。
本发明实现其发明目的,所采用的技术方案是:
水性食品级有机颜料红49:1的制备方法,在重氮液的制备中加入第二重氮组份2-萘胺-6-磺酸,在偶合液制备中加入组份1-羟基-2-萘甲酸和Winsperse5320。
具体制备方法,包括如下步骤:
(1)重氮化
将2-萘胺-1-磺酸(吐氏酸)和第二重氮组份2-萘胺-6-磺酸,溶于氢氧化钠水溶液中,测定pH=8.5-9,搅拌并且检查溶清;降温到0-5℃,加盐酸酸析,搅拌,确认酸析均匀;将亚硝酸钠水溶液于30分钟加入,进行重氮化反应,搅拌直至KI试纸检测时为微蓝色,得到重氮液,备用。
2-萘胺-1-磺酸(吐氏酸)与氢氧化钠的摩尔比为1:1.06-1.08。
氢氧化钠与2-萘胺-1-磺酸(吐氏酸)的摩尔比为1.06-1.08:1;
2-萘胺-6-磺酸与2-萘胺-1-磺酸(吐氏酸)的摩尔比为0.002-0.004:1;
盐酸与2-萘胺-1-磺酸(吐氏酸)的摩尔比为2.3-2.5:1;
亚硝酸钠与2-萘胺-1-磺酸(吐氏酸)的摩尔比为1.002-1.004:1。
(2)化料液的制备
将氢氧化钠加入水中,然后升温搅拌使其完全溶解,再向其中加入乙萘酚和第二偶合组份1-羟基-2-萘甲酸和溶解好的Winsperse5320,搅拌溶解,得到偶合液;
所述的氢氧化钠与乙萘酚摩尔比为1.3-1.5:1;
所述的1-羟基-2-萘甲酸与乙萘酚摩尔比为0.05-0.07:1;
其中水性颜料改性剂为Winsperse5320(分子量范围600-18000000)
其中水性颜料改性剂加入量为所得颜料重量的3%-8%。
(3)偶合反应
将步骤(1)制得的重氮液加入到上述的化料液中进行偶合反应,时间为10-30分钟,偶合完毕,用氢氧化钠调节pH=9.5-10,得到偶合反应液;与此同时将氢氧化钠加入水中,升温溶解,再向其中加入松香,搅拌至溶解,检查溶清;将松香液加入到偶合反应液中,得到颜料悬浮液;
其中松香与2-萘胺-1-磺酸摩尔比为0.5:1。
(4)色淀化反应
向上述颜料悬浮液中加入色淀化剂氯化钡进行色淀化反应,搅拌60分钟,使其充分色淀,升温至85℃,保温30分钟,调节pH=8.5;
(5)后处理
将步骤(4)得到的产物过滤,漂洗,烘干,粉碎,即可得到水性食品级颜料红49:1成品。
与现有技术相比,本发明的有益效果如下:
(1)、本发明采用多重氮组分和多偶合组分制备有机颜料“混晶”的方法来制备PR49:1,但不同于背景技术中记载的申请号为CN201210358115.9的专利申请文件中所述的在2-萘胺-1-磺酸重氮组分中引入2-萘胺-1,5-二磺酸来制备有机颜料混晶,本发明采用结构仅有一个磺酸基的2-萘胺-6-磺酸来与2-萘胺-1-磺酸进行参杂制备混晶。采用2-萘胺-1,5-二磺酸来制备有机颜料色淀,因为其结构上拥有比主体颜料结构更多的磺酸基,其在中色淀化剂进行色淀化时,色淀晶核形成较慢,颜料晶体成长不均匀,颜料混晶容易分离(主体颜料组分与参杂组分离);而采用主体重氮结构(2-萘胺-1-磺酸)的同分异构体2-萘胺-6-磺酸来制备混晶时,因为其与主体颜料结构相似的水溶性和色淀晶核形成速度,形成混晶均匀。
(2)在偶合组分中,采用2,3-酸对乙萘酚进行参杂,其制备出的有机颜料存在如下偶氮与醌腙互变,其中羟基较多地参入到分子内形成氢键(反应式1);
而当采用1-羟基-2-萘酸进行偶合反应时,偶合发生在4号位,其1号位上的羟基不能形成分子内氢键,主要是与其他颜料分子形成分子间氢键(反应式2)。颜料间较强的分子间氢键,使得颜料粒子结构更致密,在进行色浆研磨和分散时,粘度更小。
采用Winsperse5320作为助剂的优势是:它可以参与偶合反应,成为颜料分子的一部分,不会从颜料表面脱落,改性颜料在水性体系具有更好的分散性能,储存稳定性。
(3)本发明制备的颜料红49:1,具有更低的粘度和更高的着色力和光泽度,尤其是具有更好的储存稳定性。
具体实施方式
以下将结合具体实施例说明本发明的技术方案:
实施例1:
(1)重氮液的制备
在重氮化反应釜中加入水1000L,搅拌下加入100Kg(工业级,98%,约0.439×103mol)2-萘胺-1-磺酸(吐氏酸)和0.3Kg(工业级,98%,约0.00132×103mol)第二重氮组份2-萘胺-6-磺酸,加入氢氧化钠(浓度30%)64-65Kg,pH值7.5-8,溶解降温至0℃,再加入130Kg盐酸(浓度30%)进行酸化,将31Kg(配成浓度30%溶液)亚硝酸钠,30min内加入进行重氮化反应,温度5-10℃,搅拌60分钟,直至KI试纸微蓝,待偶合。
其中氢氧化钠与2-萘胺-1-磺酸摩尔比为1.08:1;
2-萘胺-6-磺酸与2-萘胺-1-磺酸摩尔比为0.003:1;
盐酸与2-萘胺-1-磺酸摩尔比为2.38:1;
亚硝酸钠与2-萘胺-1-磺酸摩尔比为1.003:1。
(2)化料液的制备
800L水中加85Kg(30%)氢氧化钠,升温至60℃,将67.2Kg(98%)乙萘酚和5Kg第二偶合组份1-羟基-2-萘甲酸加入,使之完全溶解,加入溶解好的水性颜料改性剂Winsperse5320 8Kg,调整体积为3200L,温度10℃。
乙萘酚与2-萘胺-1-磺酸摩尔比为1.025:1;
1-羟基-2-萘甲酸与2-萘胺-1-磺酸摩尔比为0.059:1;
阴离子型聚丙烯酰胺Winsperse5320加入量为所得颜料干重的3.33%;
氢氧化钠与乙萘酚的摩尔比为1.39:1。
(3)偶合反应
正偶合:搅拌下将重氮液在30分钟内加入偶合液中进行偶合,pH=9.5-10,温度不超过10℃,乙萘酚微过量,搅拌30分钟,pH=9.5-10;加入60Kg松香皂溶液(在180L水中加入30Kg(30%)氢氧化钠,升温90-95℃,将60Kg松香加入升温至沸腾使其溶解透明),搅拌30分钟,pH=10-10.5。
其中松香与2-萘胺-1-磺酸摩尔比为0.5:1。
(4)色淀化反应
将100Kg(98%)氯化钡加至350L水中,升温至60℃,使之完全溶解,加入到偶合桶中,pH=9-9.5搅拌60分钟,升温至85℃,保温30分钟,调节pH=8.5;
其中氯化钡与2-萘胺-1-磺酸摩尔比为1.05:1。
(5)后处理:过滤,水洗,在85℃下干燥得240Kg水性食品级有机颜料红49:1。
实施例2:
实施例2与实施例1不同之处在于:
化料液的制备步骤中:水性颜料改性剂的加入量是13Kg,为所得颜料干重的5.4%。
实施例3:
实施例3与实施例1不同之处在于:
化料液的制备步骤中:水性颜料改性剂的加入量是18Kg,为所得颜料干重的7.5%。
实施例4实施例1-3的样品应用于水性墨中检测
将实施例1-3所得的颜料17.5份,水性助剂32.5份,消泡剂两滴,和玻璃珠50份,采用震荡仪,将上述混合物分散60分钟,即得水性墨。用BrookFieldDV-II型粘度计进行水性墨粘度测试;将浆料用10号丝棒在刮样纸上刮涂,用光泽度计进行光泽度测试,用测色仪进行着色力的测试。测试所得结果与现有有机颜料红49:1产品相比比较如表1所示:
表1。
Claims (5)
1.一种水性食品级有机颜料红49:1的制备方法,其特征在于,重氮液的制备中加入第二重氮组份2-萘胺-6-磺酸,在偶合液制备中加入第二偶合组份1-羟基-2-萘甲酸和Winsperse5320;
2-萘胺-6-磺酸与2-萘胺-1-磺酸的摩尔比为0.003:1;
1-羟基-2-萘甲酸与乙萘酚的摩尔比为0.06:1;
Winsperse5320分子量为600-18000000,用量为占颜料总重量的3%-8%;
包括以下步骤:
(1)重氮液的制备
将2-萘胺-1-磺酸和第二重氮组份2-萘胺-6-磺酸,溶于氢氧化钠水溶液中,测定pH=8.5-9,搅拌,并且检查溶清;降温到0-5℃,加盐酸酸析,搅拌确认酸析均匀;将亚硝酸钠水溶液于30分钟加入,进行重氮化反应,搅拌直至KI试纸检测时为微蓝色,得到重氮液,备用;
(2)化料液的制备
将氢氧化钠加入水中,升温、搅拌使其完全溶解,向其中加入乙萘酚和第二偶合组份1-羟基-2-萘甲酸,搅拌溶清,再加入溶解好的水性颜料改性剂,得到偶合液;
(3)偶合反应
将步骤(1)制得的重氮液加入到上述的化料液中进行偶合反应,时间为10-30分钟,偶合完毕,用氢氧化钠调pH=9.5-10,得到偶合反应液;与此同时将氢氧化钠加入水中,升温溶解,再向其中加入松香,搅拌至溶解,检查溶清;将松香液加入到偶合反应液中,得到颜料悬浮液;
(4)色淀化反应
向上述颜料悬浮液中加入色淀化剂氯化钡进行色淀化反应,搅拌60分钟,使其充分色淀,升温至85℃,保温30分钟,调节pH=8.5;
(5)后处理
将步骤(4)得到的产物过滤,漂洗,烘干,粉碎,即可得到水性食品级颜料红49:1成品。
2.权利要求1所述的水性食品级有机颜料红49:1的制备方法,其特征在于,步骤(1)中,2-萘胺-1-磺酸与氢氧化钠的摩尔比为1:1.06-1.08;
2-萘胺-6-磺酸与2-萘胺-1-磺酸的摩尔比为0.003:1;
盐酸与2-萘胺-1-磺酸的摩尔比为2.3-2.5:1;
亚硝酸钠与2-萘胺-1-磺酸的摩尔比为1.002-1.004:1。
3.权利要求1所述的水性食品级有机颜料红49:1的制备方法,其特征在于,步骤(2)中所述的氢氧化钠与乙萘酚摩尔比为1.3-1.5:1;
所述的1-羟基-2-萘甲酸与乙萘酚摩尔比为0.06:1。
4.权利要求1所述的水性食品级有机颜料红49:1的制备方法,其特征在于,水性颜料改性剂加入量为所得颜料重量的3%-8%。
5.权利要求1所述的水性食品级有机颜料红49:1的制备方法,其特征在于,水性颜料改性剂为Winsperse5320,分子量范围600-18000000。
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