CN109181357A - Preparation method, color lake and the application in color lake - Google Patents
Preparation method, color lake and the application in color lake Download PDFInfo
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- CN109181357A CN109181357A CN201811062372.1A CN201811062372A CN109181357A CN 109181357 A CN109181357 A CN 109181357A CN 201811062372 A CN201811062372 A CN 201811062372A CN 109181357 A CN109181357 A CN 109181357A
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- color lake
- solution
- preparation
- ion
- chelating agent
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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
Abstract
The present invention provides the preparation method in color lake, color lake and applications, are related to color lake technical field.The solution containing a metal ion species is mainly added in the preparation method in the color lake into the acidic aqueous solution containing pigment raw material, and reaction obtains solution A, then chelating agent solution is added into solution A, chelatropic reaction is carried out in pH 6-8, obtains color lake.It is the preparation method simple process, easy to operate, color lake partial size obtained is smaller, with very high tinting strength, tinting power, and heat-resistant stability, acid-proof alkaline and excellent in light-resistance, the application range for having widened color lake improves and uses grain diameter existing for color lake made from existing preparation method larger, and tinctorial strength is low, using limited, and light fastness, acid-proof alkaline, heat resistance etc. are not highly desirable technical problem.The present invention also provides a kind of color lakes, are made using above-mentioned preparation method.The present invention also provides application of the color lake in dyestuff, ink, pigment, ink, medicine, cosmetics or food.
Description
Technical field
The present invention relates to color lake technical fields, in particular to the preparation method in color lake, color lake and application.
Background technique
Color lake is the water-insoluble colored substance being precipitated out under the action of different types of precipitating reagent by water-soluble dye
Matter is usually applied to the fields such as dyestuff, ink, pigment, ink, medicine, cosmetics or food.Above-mentioned application generally requires color lake
With bright-coloured coloured light, good covering power is not soluble in water, has stability to acid, alkali, heat, and have good light resistance
The features such as.
There are many preparation method in color lake, but the preparation process in existing color lake is in the prevalence of color lake particle obtained
Diameter is larger (generally higher than 5 μm), so that tinctorial strength reduces, using limited problem；And light fastness, the acid and alkali-resistance in color lake
Performance, heat resistance etc. are not highly desirable.
In view of this, the present invention is specifically proposed at least one of to solve the above technical problems.
Summary of the invention
The first purpose of this invention is to provide a kind of preparation method in color lake, the preparation method simple process, operation
Convenient, the color lake partial size being prepared is smaller, has very high tinting strength, tinting power and preferable heat resistance, acid-proof alkaline and light resistance
Can be excellent, widen the application range in color lake.
Second object of the present invention is to provide a kind of color lake, is prepared using the preparation method in above-mentioned color lake.
Third object of the present invention is to provide a kind of application in color lake.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
The present invention provides a kind of preparation methods in color lake, comprising the following steps:
(a) solution containing a metal ion species is added into the acidic aqueous solution containing pigment raw material, reaction obtains molten
Liquid A；
(b) chelating agent solution is added into solution A, chelatropic reaction is carried out in pH 6-8, separates, obtains color lake.
Further, in step (a), pigment raw material includes in natural plant pigment, natural animal pigment or synthetic dyestuff
One kind or at least two combination；
And/or in step (a), pigment raw material acidic aqueous solution mass fraction be 5-10%, preferably 6-9%, into
One step is preferably 7-8%；
And/or in step (a), the pH of acidic aqueous solution is 0.5-2.
Further, in step (a), the metal ion in the solution containing a metal ion species include potassium ion, sodium from
One of son, iron ion, aluminium ion, tin ion, calcium ion, magnesium ion, copper ion, chromium ion or barium ions；
And/or in step (a), the mass fraction of the metal ion in solution containing a metal ion species is 5-10%, excellent
It is selected as 6-9%, further preferably 7-8%.
Further, in step (a), the acidic aqueous solution containing pigment raw material and the solution containing a metal ion species
Mass ratio is (3-5): 1；
And/or in step (a), reaction temperature is 50-60 DEG C, reaction time 10-12h.
Further, in step (b), the chelating agent in chelating agent solution includes oxalic acid, citric acid, sodium gluconate, wine
One of stone acid or lactone；
And/or in step (b), the mass fraction of the chelating agent in chelating agent solution is 5-10%, preferably 6-9%, into
One step is preferably 7-8%.
Further, the mass ratio of solution A and chelating agent is (0.5-1.5): 1；
And/or chelates temperature is 50-60 DEG C, the chelating time is 1-2h.
Further, the preparation method in color lake, includes the following steps:
(a) it is added dropwise in containing the acidic aqueous solution that mass fraction is 5-10% pigment raw material and contains a metal ion species
Solution, reaction, reaction temperature are 50-60 DEG C, and reaction time 10-12h obtains solution A；Wherein, metal ion include potassium from
One of son, sodium ion, iron ion, aluminium ion, tin ion, calcium ion, magnesium ion, copper ion, chromium ion or barium ions；
(b) chelating agent solution is added into solution A, is warming up to 50-60 DEG C, chelatropic reaction is carried out in pH 6-8, reacts
After, it elutes, separates, it is dry, obtain color lake；
Wherein, the chelating agent in chelating agent solution includes in oxalic acid, citric acid, sodium gluconate, tartaric acid or lactone
It is a kind of.
Further, the partial size in color lake is not more than 1 μm, it is preferable that the partial size in color lake is not more than 0.22 μm.
The present invention also provides a kind of color lakes, are made using the preparation method in above-mentioned color lake；
Preferably, the partial size in color lake is not more than 1 μm, it is further preferred that the partial size in color lake is not more than 0.22 μm.
The present invention also provides a kind of color lakes in dyestuff, ink, pigment, ink, prepares in drug, cosmetics or food
Using.
Compared with prior art, the preparation method in color lake provided by the invention and color lake have the advantage that
(1) the present invention provides a kind of preparation methods in color lake, and the preparation method is mainly to the acid containing pigment raw material
Property aqueous solution in be added the solution containing a metal ion species, reaction, obtain solution A, then into solution A be added chelating agent it is molten
Liquid carries out chelatropic reaction in pH 6-8, obtains color lake.The preparation method simple process, easy to operate, the color lake being prepared
Partial size is smaller, has very high tinting strength, tinting power, and heat-resistant stability, acid-proof alkaline and light fastness are excellent, have widened color lake
Application range, improves larger using grain diameter existing for color lake made from existing preparation method, and tinctorial strength is low, using by
Limit, and light fastness, acid-proof alkaline, heat resistance etc. are not highly desirable technical problem.
In addition, under the conditions of partial neutral chelatropic reaction occurs for chelating agent and metal ion, can to avoid excessive metal from
Son enters product and causes to pollute, and ensure that the safety of product.
(2) the present invention provides a kind of color lakes, are made using above-mentioned preparation method, compared with traditional preparation methods, gained
The color lake partial size arrived is smaller, and up to 1 μm hereinafter, particle is more fine and smooth, coloring effect is good, and color lake also has excellent application
It can be stabilized at being 125~150 DEG C in temperature such as heat-resistant stability；Resistance to acid and alkali is 3.5~9.5 in pH value
Under the conditions of it is more stable；Light resistance does not fade still under prolonged solar radiation, is non-discolouring, keeps excellent color jail
Degree.
Due to the specific preparation method chelated using chelating agent to metal ion, so that metal ion contains in color lake
Measure it is lower so that color lake be free of heavy metal, it is safe and non-toxic, ensure that the safety of product.
(3) the present invention provides the applications in color lake, in view of advantage possessed by above-mentioned color lake so that its dyestuff, ink,
The fields such as pigment, ink, medicine, cosmetics or food have good application.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
According to the first aspect of the invention, a kind of preparation method in color lake is provided, comprising the following steps:
(a) solution containing a metal ion species is added into the acidic aqueous solution containing pigment raw material, reaction obtains molten
Liquid A；
(b) chelating agent solution is added into solution A, chelatropic reaction is carried out in pH 6-8, separates, obtains color lake.
The solution containing a metal ion species is first added in the present invention into the acidic aqueous solution containing pigment raw material, is formed molten
Liquid A, wherein then chelating is added together with pigment raw material in acid condition electrostatical binding in metal ion into solution A again
Agent solution, the chelating agent solution under the conditions of partial neutral (i.e. under conditions of pH 6-8) with metal ion occur chelatropic reaction,
And be coated on the outside of metal ion and form chelate precipitating, the stable color lake of properity can be obtained in separation.
It should be noted that in step (b), pH when carrying out chelatropic reaction is between 6-8, typical but non-limiting pH
Value is 6,7 or 8.PH value is unsuitable too low or excessively high in chelating systems, if pH value is too low or excessively high, when may extend reaction
Between, or even chelate that cannot be stable accordingly, seriously affect the product quality in color lake.
The mode of addition sodium hydroxide or sodium bicarbonate can be used in adjusting for pH in step (b), realizes to solution
The adjusting of pH.And when gradually heightening pH is between 6-8, have a part metals ion and hydroxyl react generation need not
The precipitating wanted, and it is exactly the strong combination for utilizing chelating agent and metal ion that chelating agent, which is added, by metal ion inclusion to chela
Chelate precipitating is generated inside mixture, to avoid the generation of above-mentioned unnecessary precipitating, further increases the purity of product.Together
When, chelate precipitating will be generated inside metal ion inclusion to chelating agent, so that metal ion content is lower in color lake, to make
It obtains color lake and is free of heavy metal, it is safe and non-toxic, it ensure that the safety in color lake.
It is the preparation method simple process, easy to operate, it is suitable for large-scale industrialization promotion application.
Compared with traditional preparation methods, the color lake partial size as made from above-mentioned preparation method is smaller, up to 1 μm hereinafter,
Color effect is good, and has excellent application performance such as heat-resistant stability, can be stabilized at being 125~150 DEG C in temperature；
Resistance to acid and alkali, it is more stable under the conditions of pH value is 3.5~9.5；Light resistance, under prolonged solar radiation, still not
It fades, is non-discolouring, keeping excellent color fastness.
As a kind of preferred embodiment of the invention, in step (a), pigment raw material includes natural plant pigment, natural
One of animal pigment or synthetic dyestuff or at least two combination.
The specific type of natural plant pigment, natural animal pigment or synthetic dyestuff is not particularly limited, using this
Raw material known to the technical staff of field.
Wherein, typical but non-limiting natural plant pigment is, for example, anthocyanidin, carotenoid, lutein, tomato red
Element, safron, Gardenia Yellow, gardenia green pigment, capsicum red pigment, pimento red pigment, capsicum citraurin, pumpkin yellow
It is public that element, sea-buckthorn Huang, pale butterflybush uranidin, citrus drape over one's shoulders uranidin, clover pigment, wolfberry pigment, ginkgo uranidin, balsam pear pigment or Pu
English pigment.
Typical but non-limiting natural animal pigment is, for example, that alkermes, lac be red, phycocyanobilin, guanin, bush
Phycochrome, shrimp shell pigment, lobster haematochrome, crab shell pigment, algae blue pigment or nostoc blue pigment.
Typical but non-limiting synthetic dyestuff is, for example, amaranth, famille rose, lemon yellow, newly red, erythrosine, temptation
Red, sunset yellow, brilliant blue, indigo or quinoline yellow.
As a kind of preferred embodiment of the invention, in step (a), mass fraction of the pigment raw material in acidic aqueous solution
For 5-10%, preferably 6-9%, further preferably 7-8%；Pigment raw material is typical but non-limiting in acidic aqueous solution
Mass fraction is 5%, 6%, 7%, 8%, 9% or 10%.
As a kind of preferred embodiment of the invention, in step (a), the pH of acidic aqueous solution is 0.5-2, acid water-soluble
The pH value of the typical but non-limiting acidic aqueous solution of liquid is 0.5,1,1.5 or 2.
By to pigment raw material the mass fraction of acidic aqueous solution and the pH value of acidic aqueous solution restriction so that color
Plain raw material anion and metal ion are more likely formed Electrostatic Absorption.
As a kind of preferred embodiment of the invention, in step (a), the GOLD FROM PLATING SOLUTION category containing a metal ion species from
Attached bag includes potassium ion, sodium ion, iron ion, aluminium ion, tin ion, calcium ion, magnesium ion, copper ion, chromium ion or barium ions
One of.
As a kind of preferred embodiment of the invention, in step (a), the GOLD FROM PLATING SOLUTION category containing a metal ion species from
The mass fraction of son is 5-10%, preferably 6-9%, further preferably 7-8%.
The mass fraction of typical but non-limiting metal ion is 5%, 6%, 7%, 8%, 9% or 10%.
By the restriction to above-mentioned species of metal ion and mass fraction, chelating agent is occurred with metal ion
Strong combination is more likely formed stable, molecular weight is bigger color lake product inside metal ion inclusion to chelating agent.
As a kind of preferred embodiment of the invention, in step (a), the acidic aqueous solution containing pigment raw material with contain
The mass ratio of one metal ion species is (3-5): 1；
Acidic aqueous solution containing pigment raw material and the typical but non-limiting example of the mass ratio containing a metal ion species
For example 3:1,3.5:1,4:1,4.5:1 or 5:1.
As a kind of preferred embodiment of the invention, in step (a), reaction temperature is 50-60 DEG C, and the reaction time is
10-12h。
Pigment raw material and the typical but non-limiting reaction temperature of metal ion be 50 DEG C, 52 DEG C, 54 DEG C, 55 DEG C, 56 DEG C,
58 DEG C or 60 DEG C, the typical but non-limiting reaction time is 10h, 11h or 12h.
By the restriction of type and mass fraction to the metal ion in solution containing a metal ion species, so that pigment
The anion and metal cation of raw material can preferably realize electrostatical binding.
The chelating agent to above-mentioned metal ion-sensitive is selected, chelatropic reaction may make to carry out more smooth.As this hair
A kind of bright preferred embodiment, in step (b), the chelating agent in chelating agent solution includes oxalic acid, citric acid, gluconic acid
One of sodium, tartaric acid or lactone.
Oxalic acid, citric acid, sodium gluconate, tartaric acid or lactone are hydroxycarboxylic acid quasi-chelate compound, can be chelated mostly
Number divalent and trivalent metal ion.Its mesoxalic acid and citric acid can combine to form ligand compound with metal ion unoccupied orbital
Object.Sodium gluconate is a kind of good all-round chelating agent, has good sequestering power to various metals ion.
As a kind of preferred embodiment of the invention, in step (b), the mass fraction of the chelating agent in chelating agent solution
For 5-10%, preferably 6-9%, further preferably 7-8%.The mass fraction of typical but non-limiting chelating agent be 5%,
6%, 7%, 8%, 9% or 10%.
As a kind of preferred embodiment of the invention, the mass ratio of solution A and chelating agent is (0.5-1.5): 1, preferably
For (0.8-1.4): 1, further preferably (0.9-1.2): 1, more preferably 1:1；
The typical but non-limiting mass ratio of solution A and chelating agent be 0.5:1,0.6:1,0.8:1,0.9:1,1.0:1,
1.2:1,1.4:1 or 1.5:1.
As a kind of preferred embodiment of the invention, chelates temperature is 50-60 DEG C, and the chelating time is 1-2h.
Typical but non-limiting chelates temperature is 50 DEG C, 52 DEG C, 54 DEG C, 55 DEG C, 56 DEG C, 58 DEG C or 60 DEG C, it is typical but
The unrestricted chelating time is 1h, 1.5h or 2h.
By the restriction of chelant species, chelating agent mass fraction and chelates temperature and time so that chelatropic reaction into
Row is more abundant, is formed by chelate stability with higher.
As a kind of preferred embodiment of the invention, the preparation method in the color lake includes the following steps:
(a) it is added dropwise in containing the acidic aqueous solution that mass fraction is 5-10% pigment raw material and contains a metal ion species
Solution, reaction, reaction temperature are 50-60 DEG C, and reaction time 10-12h obtains solution A；Wherein, in metal ion solution
Metal ion include potassium ion, sodium ion, iron ion, aluminium ion, tin ion, calcium ion, magnesium ion, copper ion, chromium ion or
One of barium ions；
(b) chelating agent solution is added into solution A, is warming up to 50-60 DEG C, chelatropic reaction is carried out in pH 6-8, reacts
After, it elutes, separates, it is dry, obtain color lake；
Wherein, the chelating agent in chelating agent solution includes in oxalic acid, citric acid, sodium gluconate, tartaric acid or lactone
It is a kind of.
In step (b), separation generally use filter membrane perhaps strainer i.e. using certain mesh number filter membrane or strainer filter out it is heavy
Starch, and in free water is removed under vacuum；Sediment after removal free water is placed in dry in drying equipment to moisture content and is accorded with
It closes and requires to get color lake is arrived.
By the restriction of specific steps in the preparation method to color lake and technological parameter, so that obtained color lake has
Good performance and quality.
As a kind of preferred embodiment of the invention, the partial size in color lake is not more than 1 μm, especially at 0.45 μm hereinafter,
More particularly at 0.22 μm hereinafter, generally between 10nm~0.5 μm.Since its partial size is thinner, and then greatly improve
Intensity of colour, photostability is more preferable, and application is unrestricted.
According to the second aspect of the invention, a kind of color lake is additionally provided, is made using the preparation method in above-mentioned color lake；
Preferably, the partial size in color lake is not more than 1 μm, especially at 0.45 μm hereinafter, more particularly at 0.22 μm or less.
A kind of color lake provided by the invention is made using above-mentioned preparation method, obtained compared with traditional preparation methods
Color lake partial size is smaller, up to 1 μm hereinafter, and have excellent application performance such as heat resistance, temperature be 125~150 DEG C at
It can be stabilized；Resistance to acid and alkali, it is more stable under the conditions of pH value is 3.5~9.5；Light resistance, in prolonged day
Under light irradiation, does not fade still, is non-discolouring, keeping excellent color fastness.
Due to used specific preparation method, so that metal ion content is lower in color lake, so that color lake is not
It is safe and non-toxic containing heavy metal, it ensure that the safety of product.
According to the third aspect of the present invention, a kind of application in color lake is additionally provided.
In view of advantage possessed by above-mentioned color lake so that its in dyestuff, ink, pigment, ink, prepare drug, cosmetics
Or the fields such as food have good application.
Combined with specific embodiments below and comparative example, the invention will be further described.
Embodiment 1
A kind of preparation method in color lake provided in this embodiment, includes the following steps:
(a) Gardenia Yellow is dissolved in the acidic aqueous solution that pH is 2, the dye solution that mass fraction is 5% is made, mixed
It closes uniform；
Under stiring, the solution containing a metal ion species (sodium ion) that mass fraction is 5% is added dropwise in 1h, is warming up to
50 DEG C, isothermal reaction 10h obtains solution A；
Wherein, the mass ratio of dye solution and the solution containing a metal ion species (sodium ion) is 5:1；
(b) with stirring, the oxalic acid solution that mass fraction is 5% is added dropwise in 1h into solution A, is warming up to 50 DEG C, then at
It is gradually turned up in the condition that solution ph is 6 and chelates under stirring, in 1h, after reaction, elution, film filtering is dry, obtains color
It forms sediment；
Wherein, the mass ratio of solution A and oxalic acid solution is 5:1.
Embodiment 2
A kind of preparation method in color lake provided in this embodiment, includes the following steps:
(a) phycocyanobilin is dissolved in the acidic aqueous solution that pH is 1, the dye solution that mass fraction is 10% is made, mixing
Uniformly；
Under stiring, the solution containing a metal ion species (calcium ion) that mass fraction is 8% is added dropwise in 2h, is warming up to
55 DEG C, isothermal reaction 12h obtains solution A；
Wherein, the mass ratio of dye solution and the solution containing a metal ion species is 3:1；
(b) with stirring, the citric acid solution that mass fraction is 8% is added dropwise in 2h into solution A, is warming up to 55 DEG C, then
With stirring, it is gradually turned up in the condition that solution ph is 7 and chelates in 2h, after reaction, elution, film filtering is dry, obtains
Color lake；
Wherein, the mass ratio of solution A and citric acid solution is 4:1.
Embodiment 3
A kind of preparation method in color lake provided in this embodiment, includes the following steps:
(a) sunset yellow is dissolved in the acidic aqueous solution that pH is 0.5, the dye solution that mass fraction is 7% is made, mixing
Uniformly；
Under stiring, be added dropwise into dye solution in 1.5h mass fraction be 10% containing a metal ion species (chromium from
Son) solution, be warming up to 60 DEG C, isothermal reaction 11h obtains solution A；
Wherein, the mass ratio of dye solution and the solution containing a metal ion species is 3.5:1；
(b) with stirring, the lactone solution that mass fraction is 10% is added dropwise in 1.5h into solution A, is warming up to 60 DEG C, then
With stirring, it is gradually turned up in the condition that solution ph is 8 and chelates in 2h, after reaction, elution, film filtering is dry, obtains
Color lake；
Wherein, the mass ratio of solution A and lactone solution is 5:1.
Embodiment 4
A kind of preparation method in color lake provided in this embodiment, in addition in step (b), pH value of solution is adjusted to 8, remaining step with
And technological parameter is same as Example 1.
Embodiment 5
The preparation method in a kind of color lake provided in this embodiment, in addition to chelating agent solution uses ethoxy second in step (b)
Ethylenediamine triacetic acid (HEDTA), remaining step and technological parameter are same as Example 1.
Embodiment 6
The preparation method in a kind of color lake provided in this embodiment, in addition to chelating agent solution is sweet using ethoxy in step (b)
Propylhomoserin (DEG), remaining step and technological parameter are same as Example 2.
Embodiment 7
A kind of preparation method in color lake provided in this embodiment, in addition in step (b) in chelating agent solution chelating agent matter
Measuring score is 3%, remaining step and technological parameter are same as Example 2.
Embodiment 8
The preparation method in a kind of color lake provided in this embodiment, in addition to chelating agent solution is sodium gluconate in step (b)
Solution, remaining step and technological parameter are same as Example 3.
Embodiment 9
A kind of preparation method in color lake provided in this embodiment, in addition to chelating agent solution is tartaric acid solution in step (b),
Remaining step and technological parameter are same as Example 3.
Embodiment 10
A kind of preparation method in color lake provided in this embodiment, in addition to chelates temperature is 40 DEG C in step (b), remaining step
And technological parameter is same as Example 3.
Embodiment 11
A kind of preparation method in color lake provided in this embodiment, in addition to chelates temperature is 70 DEG C in step (b), remaining step
And technological parameter is same as Example 3.
Embodiment 12
The preparation method in a kind of color lake provided in this embodiment, in addition to the chelating time is 0.5h, remaining step in step (b)
And technological parameter is same as Example 3.
Comparative example 1
This comparative example provide a kind of color lake preparation method, in addition in step (b), pH value of solution is adjusted to 4, remaining step with
And technological parameter is same as Example 1.
Comparative example 2
A kind of preparation method in color lake that this comparative example provides, in addition in step (b), pH value of solution is adjusted to 10, remaining step
And technological parameter is same as Example 1.
Comparative example 3
A kind of preparation method in color lake that this comparative example provides, in addition to being not added with chelating agent solution in step (b), remaining step
Rapid and technological parameter is same as Example 1.
In order to verify the effect of embodiment 1-12 and comparative example 1-3, ad hoc following experimental example.
Experimental example 1
The performance in color lake obtained by embodiment 1-12 and comparative example 1-3 is tested, concrete outcome is shown in Table 1.
Specifically, using the granularity size in sieve method measurement color lake；
Water-fast stripping property is to carry out quantitative measurment to stripping material using spectrophotometry；
Tinctorial strength be using spectrophotometry to water stripping material quantitative determined as a result, colouring after stripping material
Fewer to represent tinctorial strength higher, wherein tinctorial strength is excellent to refer to 1-999 μ g/mL；Tinctorial strength is splendid to refer to 1000-
4999μg/mL；Tinctorial strength height refers to 5000-15000 μ g/mL；
Heat-resistant stability test method are as follows: put in color lake in an oven, at different temperature constant temperature 30min；
Sunproof test mode are as follows: by a small amount of water dispersion in color lake, be then painted on blank sheet of paper, coloring sample is placed in
It is shone 400 hours under hernia lamp, takes out observation fading extent, compare blue mark, 8 grades best, and 1 grade worst；
The test mode of resistance to acid and alkali are as follows: be placed on color lake in the acid solution and lye solution of different pH, holding 24 is small
When observe discoloration.
Each embodiment and comparative example color lake quantitative measurement result of table 1
Each embodiment and comparative example color lake application performance test result of table 2
As can be seen from Table 1, the color lake that preparation process through the invention is prepared, partial size is small on the whole, Ke Yida
To at 1 μm hereinafter, and have preferable heat-resistant stability, acid-proof alkaline and light fastness.
Wherein, embodiment 5 is the control experiment of embodiment 1, and embodiment 6 is the control experiment of embodiment 2,5 He of embodiment
Embodiment 6, which is all made of, is different from the chelant species that the present invention limits.Embodiment 1 is compared it can be seen from data in table 1 and 2
With embodiment 2, the color lake that embodiment 5 and embodiment 6 are prepared, light resistance is poor, and tinctorial strength is relatively low, and also part is molten
Yu Shui, water-fast stripping property is poor, causes to be very restricted when application, is not able to satisfy the demand in market.
Embodiment 7 is the control experiment of embodiment 2, and the two is the difference is that the quality of chelating agent is divided in chelating agent solution
Number is different.When the mass fraction of chelating agent in chelating agent solution is lower than the numberical range that the present invention limits, chelating agent in system
Dosage it is very little, sequestering power is limited, therefore color lake yield is lower, and has part metals ion chelating incomplete, hence into arriving
It in the product of color lake, causes metal ion content in color lake higher, influences the safety in utilization in color lake.
Embodiment 10-12 is the control experiment of embodiment 3, four the difference is that when chelatropic reaction chelates temperature or
It is different to chelate the time.When chelates temperature is too low it can be seen from data in table 1 and 2, activation energy is insufficient, and chelates temperature is excessively high
When, the sequestering power decline of chelating agent, i.e., when the numberical range that chelates temperature is limited beyond the present invention, chelating agent and metal from
Son cannot form stable chelate well.When the chelating time is too short, chelatropic reaction occurs for chelating agent and metal ion
Insufficient, the yield in color lake is lower, and purity is not high.
Comparative example 1 and comparative example 2 are the comparative experiments of embodiment 1, and three is the difference is that system when chelatropic reaction
PH value is different.Under different pH condition, chelating agent is different for the sequestering power of metal ion.It can be seen by data in table 1 and 2
Out, when system pH is in the numberical range that the present invention limits, chelating agent just has metal ion stronger chelating energy
Power, so that obtained color lake has more excellent performance.
Comparative example 3 is the comparative experiments of embodiment 1, and whether the two is the difference is that add chelating agent solution.In system
When being not added with chelating agent solution, then color lake cannot be generated.
In conclusion the preparation method simple process in color lake provided by the invention, easy to operate, the color lake grain being prepared
Diameter is smaller, has very high tinting strength, tinting power and preferable heat resistance, acid-proof alkaline and light fastness are excellent, have widened answering for color lake
With range, foundation is provided for the industrialized production in color lake.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of preparation method in color lake, which comprises the following steps:
(a) solution containing a metal ion species is added into the acidic aqueous solution containing pigment raw material, reaction obtains solution A；
(b) chelating agent solution is added into solution A, chelatropic reaction is carried out in pH 6-8, separates, obtains color lake.
2. preparation method according to claim 1, which is characterized in that in step (a), pigment raw material includes natural plants color
One of element, natural animal pigment or synthetic dyestuff or at least two combination；
And/or in step (a), pigment raw material acidic aqueous solution mass fraction be 5-10%, preferably 6-9%, further
Preferably 7-8%；
And/or in step (a), the pH of acidic aqueous solution is 0.5-2.
3. preparation method according to claim 1, which is characterized in that in step (a), the solution containing a metal ion species
In metal ion include potassium ion, sodium ion, iron ion, aluminium ion, tin ion, calcium ion, magnesium ion, copper ion, chromium from
One of son or barium ions；
And/or in step (a), the mass fraction of the metal ion in solution containing a metal ion species is 5-10%, preferably
6-9%, further preferably 7-8%.
4. preparation method according to claim 1, which is characterized in that in step (a), the acidity containing pigment raw material is water-soluble
The mass ratio of liquid and the solution containing a metal ion species is (3-5): 1；
And/or in step (a), reaction temperature is 50-60 DEG C, reaction time 10-12h.
5. preparation method according to claim 1, which is characterized in that the chelating agent packet in step (b), in chelating agent solution
Include one of oxalic acid, citric acid, sodium gluconate, tartaric acid or lactone；
And/or in step (b), the mass fraction of the chelating agent in chelating agent solution is 5-10%, preferably 6-9%, further
Preferably 7-8%.
6. preparation method according to claim 1, which is characterized in that the mass ratio of solution A and chelating agent solution is (0.5-
1.5):1；
And/or chelates temperature is 50-60 DEG C, the chelating time is 1-2h.
7. preparation method according to claim 1, which comprises the steps of:
(a) it is added dropwise in containing the acidic aqueous solution that mass fraction is 5-10% pigment raw material and contains the molten of a metal ion species
Liquid, reaction, reaction temperature are 50-60 DEG C, and reaction time 10-12h obtains solution A；Wherein, metal ion include potassium ion,
One of sodium ion, iron ion, aluminium ion, tin ion, calcium ion, magnesium ion, copper ion, chromium ion or barium ions；
(b) chelating agent solution is added into solution A, is warming up to 50-60 DEG C, chelatropic reaction is carried out in pH 6-8, reaction terminates
Afterwards, it elutes, separates, it is dry, obtain color lake；
Wherein, the chelating agent in chelating agent solution includes one of oxalic acid, citric acid, sodium gluconate, tartaric acid or lactone.
8. preparation method described in -7 any one according to claim 1, which is characterized in that the partial size in color lake is not more than 1 μm；
Preferably, the partial size in color lake is not more than 0.22 μm.
9. a kind of color lake, which is characterized in that be made using the preparation method in color lake described in claim 1-8 any one；
Preferably, the partial size in color lake is not more than 1 μm, it is further preferred that the partial size in color lake is not more than 0.22 μm.
10. color lake made from the preparation method in color lake described in claim 1-8 any one or color lake as claimed in claim 9
In dyestuff, ink, pigment, ink, prepare application in drug, cosmetics or food.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811062372.1A CN109181357A (en) | 2018-09-12 | 2018-09-12 | Preparation method, color lake and the application in color lake |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811062372.1A CN109181357A (en) | 2018-09-12 | 2018-09-12 | Preparation method, color lake and the application in color lake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109679370A (en) * | 2018-09-12 | 2019-04-26 | 乐象永续科技（杭州）有限公司 | Preparation method, color lake and its application in color lake |
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| CN1884389A (en) * | 2005-06-21 | 2006-12-27 | 福建农林大学 | Monascus color color lake and preparation method thereof |
| CN101565555A (en) * | 2009-04-14 | 2009-10-28 | 华东理工大学 | Rare earth complex red pigment with excellent pigment performance and application thereof |
| WO2011012471A3 (en) * | 2009-07-28 | 2011-04-14 | Universität Innsbruck | Natural dyes |
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| CN1884389A (en) * | 2005-06-21 | 2006-12-27 | 福建农林大学 | Monascus color color lake and preparation method thereof |
| CN101565555A (en) * | 2009-04-14 | 2009-10-28 | 华东理工大学 | Rare earth complex red pigment with excellent pigment performance and application thereof |
| WO2011012471A3 (en) * | 2009-07-28 | 2011-04-14 | Universität Innsbruck | Natural dyes |
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| CN109679370A (en) * | 2018-09-12 | 2019-04-26 | 乐象永续科技（杭州）有限公司 | Preparation method, color lake and its application in color lake |
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