CN105038413A - Transparent pigment slurry and preparation method thereof - Google Patents
Transparent pigment slurry and preparation method thereof Download PDFInfo
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- CN105038413A CN105038413A CN201510471538.5A CN201510471538A CN105038413A CN 105038413 A CN105038413 A CN 105038413A CN 201510471538 A CN201510471538 A CN 201510471538A CN 105038413 A CN105038413 A CN 105038413A
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- pigment slurry
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Abstract
The invention provides transparent pigment slurry and a preparation method thereof. The transparent pigment slurry consists of, by weight, 8-16 parts of pigment color pieces, 4-16 parts of matrix resin, 0.1-1 part of wetting dispersant and 67-68 parts of solvent. Compared with the prior art, the transparent pigment slurry has the advantages that the transparent pigment slurry has very high clarity and can meet the requirement for the clarity of the composite coloring card paper; the flooding problem caused by two or more types of pigment slurry in transfer coatings can be effectively prevented; the compatibility of the pigment slurry with the transfer coatings is better, and the pigment slurry is wide in application range and can be suitable for most of transfer coatings; compared with later coloring, the transparent pigment slurry is suitable for early coloring, the process is simple, it is only needed that a certain proportion of pigment slurry is added into the required transfer coating, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of transparent pigment slurry and preparation method thereof, belong to technical field of coatings.
Background technology
Current transfer coatings is widely used in cigarette, wine box, food, gift, in the gold and silver paperboard of the packaging such as makeup, and front colouring technology refers to that the pigment slurry adding certain proportioning in transfer coatings makes transfer coatings have different colors, this technique not only reduces the technical process being manufactured with colour atla paper and also greatly reduces cost, but, different colours pigment slurry joins in transfer coatings, often bring the problems such as floating, and there is the problem of clear permeability difference in a lot of pigment slurrys, this greatly reduces the aesthetic property of coloured paperboard, the popularization of transfer coatings and the front colouring technology of painting before therefore constraining and development.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and provide a kind of transparent pigment to starch and preparation method thereof.
The present invention is achieved by the following technical solutions:
A transparent pigment slurry, it is made up of the following component counted by weight:
Preferably, described pigment color chips comprises monoazo pigment Huang/red, polyazo Pigment Yellow 73/red, azo condensation pigment are red/yellow etc., but be not limited to above-mentioned several.
Preferably, described matrix resin comprises at least one in amino modified polyacrylate resin, aldehyde ketone resin/polyketone resin, Nitrocellulose.Polar group in this several resin is easy to be adsorbed on pigment particles surface, pigment particles is effectively wrapped up, other chain-like structures are stretched in solvent, thus pigment particles is dispersed, play stabilization, simultaneously, the difference of two kinds of pigment particles on properties can be reduced, as molecular polarity difference, surface charge difference etc., thus reduce the phenomenon of floating.
Preferably, described wetting dispersing agent comprises at least one in the modified polyether with high pigment affinity groups, the modified poly ester with high pigment affinity groups, the polyacrylic ester with high pigment affinity groups, organic silicon modified by polyether oxygen alkane.But be not limited to above-mentioned several, wetting dispersing agent plays sterically hindered effect between pigment particles, is effectively spread out by pigment particles, plays the effect of stabilization.
Preferably, described solvent comprises one or more in ethyl acetate, n-propyl acetate, propylene glycol monomethyl ether, butanone.
A preparation method for transparent pigment slurry as the aforementioned, it comprises the steps:
After being stirred at normal temperatures by solvent, be heated to 40 ~ 60 DEG C;
Under whipped state, matrix resin and wetting dispersing agent are dropped in described solvent successively, after stirring evenly, stop stirring, be cooled to 10 ~ 25 DEG C, obtain dispersion liquid;
Drop into pigment color chips, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 5 μm;
After the solid content of dispersion liquid and depth of shade are adjusted to theoretical value, then stir 0.1 ~ 1h, after crossing 300 mesh filter screens, packaging of weighing.
Ultimate principle of the present invention is:
1, the polar group in matrix resin is easy to be adsorbed on pigment particles surface, pigment particles is effectively wrapped up, other chain-like structures are stretched in solvent, thus pigment particles is dispersed, play stabilization, simultaneously, the difference of two kinds of pigment particles on properties can be reduced, as molecular polarity difference, surface charge difference etc., thus reduce the phenomenon of floating.
2, wetting dispersing agent plays sterically hindered effect between pigment particles, is effectively spread out by pigment particles, plays the effect of stabilization.
3, ensure during sand milling that low temperature environment can make pigment particles surface have lower surface energy, stop pigment particles to be reunited together, thus play good dissemination.
4, fully, make fineness≤5 μm, the pigment particles below 5 μm can make pigment slurry have higher clear permeability in grinding.
Compared with prior art, the present invention has following beneficial effect:
(1) have very high clear permeability, before meeting, colouring composite card paper is for the requirement of clear permeability;
(2) the floating problem that two kinds and two or more pigment slurry bring in transfer coatings can effectively be prevented;
(3) better, applied widely with the compatibleness of transfer coatings, most transfer coatings can be applicable to;
(4) compared with rear colouring, this pigment slurry is applicable to front colouring, and this technique is simple, only needs the pigment slurry of certain proportioning to join in required transfer coatings, and reduces cost.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
embodiment 1
A preparation method for transparent pigment slurry, the method comprises following processing step:
(1) by all solvents, namely n-propyl acetate 20 kilograms, ethyl acetate 40 kilograms, butanone 20 kilograms drop in premix tank, and are heated to about 45 DEG C and stir;
(2) under whipped state, Nitro cellulose resin 10 kilograms and the polyethers 0.4 kilogram with high pigment affinity groups are dropped in premix tank successively, stir 0.5 hours;
(3) to be mixed evenly after turn off heating installation and be cooled to 20 DEG C;
(4) dropped in premix tank by 10 kilograms of monoazo pigment color chips, stir 0.5 hour, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 5 μm;
(5) after the solid content of dispersion liquid and depth of shade being adjusted to theoretical value, then 0.1 ~ 1h is stirred, after crossing 300 mesh filter screens, packaging of weighing.
Nitro cellulose resin specification described in embodiment 1 is 1/2s (representing the viscosity size of finite concentration nitrocellulose solution), and nitrogen content is 11.5 ~ 12.2%, described in there is the polyethers of high pigment affinity groups, as BYK-163.
embodiment 2
A preparation method for transparent pigment slurry, the method comprises following processing step:
(1) by all solvents, namely ethyl acetate 50 kilograms, propylene glycol monomethyl ether 20 kilograms drop in premix tank, and are heated to about 50 DEG C and stir;
(2) under whipped state, aldehyde ketone resin 13 kilograms and the modified poly ester (namely by the polyester of high pigment affinity groups modification) 1 kilogram with high pigment affinity groups are dropped in premix tank successively, stir 1 hours;
(3) to be mixed evenly after turn off heating installation and be cooled to 15 DEG C;
(4) 16 kilograms of azo condensation pigment red tab dropped in premix tank, stir 0.5 hour, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 5 μm;
(5) after the solid content of dispersion liquid and depth of shade being adjusted to theoretical value, then 0.1 ~ 1h is stirred, after crossing 300 mesh filter screens, packaging of weighing.
The second-order transition temperature of aldehyde ketone resin described in embodiment 2 is 120 DEG C, and hydroxyl value is 60 ~ 100mgKOH/g, and molecular weight is 2 ~ 40,000, described in there is the modified poly ester of high pigment affinity groups, as TEGODispers670.
embodiment 3
A preparation method for transparent pigment slurry, the method comprises following processing step:
(1) by all solvents, namely n-propyl acetate 30 kilograms, ethyl acetate 40 kilograms, butanone 15 kilograms drop in premix tank, and are heated to about 45 DEG C and stir;
(2) under whipped state, Nitro cellulose resin 5 kilograms and the polyacrylic ester 0.2 kilogram with high pigment affinity groups are dropped in premix tank successively, stir 0.5 hours;
(3) to be mixed evenly after turn off heating installation and be cooled to 20 DEG C;
(4) 10 kilograms of monoazo pigment erotic film dropped in premix tank, stir 0.5 hour, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 5 μm;
(5) after the solid content of dispersion liquid and depth of shade being adjusted to theoretical value, then 0.1 ~ 1h is stirred, after crossing 300 mesh filter screens, packaging of weighing.
Nitro cellulose resin specification described in embodiment 3 is 1/4s, and nitrogen content is 10.7 ~ 11.4%, described in there is the polyacrylic ester of high pigment affinity groups, as Tech-5429.
embodiment 4
A preparation method for transparent pigment slurry, the method comprises following processing step:
(1) by all solvents, namely ethyl acetate 30 kilograms, propylene glycol monomethyl ether 25 kilograms, butanone 25 kilograms drop in premix tank, and are heated to about 60 DEG C and stir;
(2) under whipped state, polyacrylate resin 12 kilograms and 0.5 kilogram, organic silicon modified by polyether oxygen alkane are dropped in premix tank successively, stir 1.5 hours;
(3) to be mixed evenly after turn off heating installation and be cooled to 25 DEG C;
(4) dropped in premix tank by 8 kilograms of polyazo Pigment red color chips, stir 0.5 hour, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 5 μm;
(5) after the solid content of dispersion liquid and depth of shade being adjusted to theoretical value, then 0.1 ~ 1h is stirred, after crossing 300 mesh filter screens, packaging of weighing.
The second-order transition temperature of polyacrylate resin described in embodiment 4 is 112 DEG C, and molecular weight is 6.5 ten thousand, and described organic silicon modified by polyether oxygen alkane, as DC-67.
comparative example 1
(1) by all solvents, namely n-propyl acetate 20 kilograms, ethyl acetate 40 kilograms, butanone 20 kilograms drop in premix tank, and are heated to about 45 DEG C and stir;
(2) under whipped state, Nitro cellulose resin 10 kilograms and the polyethers 0.4 kilogram with high pigment affinity groups are dropped in premix tank successively, stir 0.5 hours;
(3) to be mixed evenly after turn off heating installation and be cooled to 20 DEG C;
(4) 10 kilograms of monoazo pigment erotic film dropped in premix tank, stir 0.5 hour, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 10 μm;
(5) after the solid content of dispersion liquid and depth of shade being adjusted to theoretical value, then 0.1 ~ 1h is stirred, after crossing 300 mesh filter screens, packaging of weighing.
Nitro cellulose resin described in comparative example 1, the polyethers with high pigment affinity groups, monoazo pigment erotic film are with embodiment 1.
comparative example 2
(1) by all solvents, namely ethyl acetate 50 kilograms, propylene glycol monomethyl ether 20 kilograms drop in premix tank, and are heated to about 50 DEG C and stir;
(2) under whipped state, aldehyde ketone resin 13 kilograms and the modified poly ester 1 kilogram with high pigment affinity groups are dropped in premix tank successively, stir 1 hours;
(3) 16 kilograms of azo condensation pigment red tab dropped in premix tank, stir 0.5 hour, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 5 μm;
(4) after the solid content of dispersion liquid and depth of shade being adjusted to theoretical value, then 0.1 ~ 1h is stirred, after crossing 300 mesh filter screens, packaging of weighing.
Aldehyde ketone resin described in comparative example 2, the modified poly ester with high pigment affinity groups, azo condensation pigment red tab are with embodiment 2.
comparative example 3
(1) by all solvents, namely n-propyl acetate 35 kilograms, ethyl acetate 40 kilograms, butanone 15 kilograms and 10 kilograms of monoazo pigment erotic film drop in premix tank, stir 0.5 hour;
(2) feed liquid in premix tank is pumped in sand mill, grind 1.5 hours, after detecting fineness≤5 μm in input basin;
(3) measure solids content and depth of shade, and be adjusted to theoretical value, more slowly stir 1 hours, with 300 mesh filter screens, feed liquid is filtered, cooling, weighing and bagging.
Monoazo pigment erotic film described in comparative example 3 is with the monoazo pigment erotic film described in embodiment 3.
comparative example 4
(1) by all solvents, namely ethyl acetate 30 kilograms, propylene glycol monomethyl ether 25 kilograms, butanone 25 kilograms drop in premix tank, and are heated to about 60 DEG C and stir;
(2) under whipped state, polyacrylate resin 12 kilograms and 0.05 kilogram, organic silicon modified by polyether oxygen alkane are dropped in premix tank successively, stir 1.5 hours;
(3) to be mixed evenly after turn off heating installation and be cooled to 25 DEG C;
(4) 16 kilograms of azo condensation pigment red tab dropped in premix tank, stir 0.5 hour, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 5 μm;
(5) after the solid content of dispersion liquid and depth of shade being adjusted to theoretical value, then 0.1 ~ 1h is stirred, after crossing 300 mesh filter screens, packaging of weighing.Polyacrylate resin described in comparative example 4, organic silicon modified by polyether oxygen alkane, polyazo Pigment red color chips are with embodiment 4.
Carry out properties test to embodiment 1 ~ 4, comparative example 1 ~ 4, testing standard is as described below.
Clear permeability test: pigment slurry 4# line rod is coated in black and white paperboard simultaneously, 30s is dried in 130 DEG C of constant temperature convection oven, contrast clear permeability under specimen page being put in D65 standard light source, result A/B/C/D represents, A: very clear thoroughly, B: general clear, C: send out dim, D: very dim.
Transmittance is tested: the unification of pigment slurry vinyl acetic monomer is diluted to 8% and admittedly contains, coat on biaxially oriented polyester film (BOPET) with 4# line rod, 30s is dried, with the transmittance of light transmittance tester test coated film in 130 DEG C of constant temperature convection oven.
Loose colour Tachistoscope: the Pigment Yellow 73 slurry of gained and Pigment red are starched to join with the mass ratio of 3:1 and taken advantage of in hawk board transfer coatings BL-0701A respectively by embodiment 1 (comparative example 1) and embodiment 2 (comparative example 2), pigment slurry add-on is 40% (mass parts) of transfer coatings, stir, coated on biaxially oriented polyester film (BOPET), control dry measure at 1.1-1.4g/m2, then vacuum aluminum-coated, be compounded in ivory board with BASF SD-615 glue afterwards, BOPET is stripped down gently, obtains A (B) specimen page.
By embodiment 3 (comparative example 3) and embodiment 4 (comparative example 4), the Pigment Yellow 73 slurry of gained and Pigment red are starched to join with the mass ratio of 3:2 and are taken advantage of in hawk board transfer coatings BL-0701A respectively, pigment slurry add-on is 50% (mass parts) of transfer coatings, stir, coated on biaxially oriented polyester film (BOPET), control dry measure at 1.1-1.4g/m2, then vacuum aluminum-coated, be compounded in ivory board with BASF SD-615 glue afterwards, BOPET is stripped down gently, obtains C (D) specimen page.
Under specimen page being put in D65 standard light source, with the naked eye watching loose colour degree, is generally that redness floats over upper strata, if specimen page is partially red and have the redness of " point-like " or " cloud " shape to float over specimen page upper strata, is then flooding phenomenon.Result A/B/C/D represents, A: without loose colour B: more frivolous look C: medium loose colour D: serious loose colour.
Heatproof is tested: the square specimen page of cutting 2cm*2cm size on above-mentioned gained A, B, C, D specimen page, is put in specimen page on aluminium-foil paper, and is placed in constant temperature convection oven and toasts 1min, starting temperature 100 DEG C, increasing extent of temperature 5 DEG C, until specimen page coating is dried bad, record dries the temperature in bad time.
Resistance to ethanol test: dip ethanol with rayon balls, wiping on A, B, C, D specimen page, until coating shedding, the number of times of record wiping.
VOC tests: carry out VOC detection according to GB YC263-2008 to A, B, C, D specimen page.
Properties test is carried out to embodiment 1-4, comparative example 1-4 and A, B, C, D specimen page, the results are shown in following form.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (5)
1. a transparent pigment slurry, is characterized in that, be made up of the following component counted by weight:
2. transparent pigment slurry as claimed in claim 1, it is characterized in that, described matrix resin comprises at least one in amino modified polyacrylate resin, aldehyde ketone resin/polyketone resin, Nitrocellulose.
3. transparent pigment slurry as claimed in claim 1, it is characterized in that, described wetting dispersing agent comprises at least one in the modified polyether with high pigment affinity groups, the modified poly ester with high pigment affinity groups, the polyacrylic ester with high pigment affinity groups, organic silicon modified by polyether oxygen alkane.
4. transparent pigment slurry as claimed in claim 1, it is characterized in that, described solvent comprises one or more in ethyl acetate, n-propyl acetate, propylene glycol monomethyl ether, butanone.
5. a preparation method for transparent pigment slurry as claimed in claim 1, is characterized in that, comprise the steps:
After being stirred at normal temperatures by solvent, be heated to 40 ~ 60 DEG C;
Under whipped state, matrix resin and wetting dispersing agent are dropped in described solvent successively, after stirring evenly, stop stirring, be cooled to 10 ~ 25 DEG C, obtain dispersion liquid;
Drop into pigment color chips, after being uniformly dispersed, grinding, treats that the fineness of described dispersion liquid is no more than 5 μm;
After the solid content of dispersion liquid and depth of shade are adjusted to theoretical value, then stir 0.1 ~ 1h, after crossing 300 mesh filter screens, packaging of weighing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105542613A (en) * | 2016-01-08 | 2016-05-04 | 上海维凯光电新材料有限公司 | High-function coating for PVC transparent shoe box |
| CN106800834A (en) * | 2017-01-17 | 2017-06-06 | 常州众杰复合材料有限公司 | Pultrusion molding process high-performance secondary color mill base and preparation method thereof |
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| CN103305062A (en) * | 2013-07-12 | 2013-09-18 | 三棵树涂料股份有限公司 | Environment-friendly general color paste and preparation method thereof |
| CN103351719A (en) * | 2013-06-24 | 2013-10-16 | 广州市番禺科迪色彩有限公司 | Preparation method of nano-solvent organic yellow color paste |
| CN103387769A (en) * | 2013-06-24 | 2013-11-13 | 广州市番禺科迪色彩有限公司 | Preparation method of nanometer solvent type organic red color paste |
| CN103756411A (en) * | 2013-12-30 | 2014-04-30 | 杭州浙大海维特化工科技有限公司 | Special ink-jet printing ink for PVC (polyvinyl chloride) cable and preparation method |
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Patent Citations (5)
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| CN101358040A (en) * | 2007-07-31 | 2009-02-04 | 上海富臣化工有限公司 | Pigment type colourant using ethanol as solvent and producing method thereof |
| CN103351719A (en) * | 2013-06-24 | 2013-10-16 | 广州市番禺科迪色彩有限公司 | Preparation method of nano-solvent organic yellow color paste |
| CN103387769A (en) * | 2013-06-24 | 2013-11-13 | 广州市番禺科迪色彩有限公司 | Preparation method of nanometer solvent type organic red color paste |
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| CN105542613A (en) * | 2016-01-08 | 2016-05-04 | 上海维凯光电新材料有限公司 | High-function coating for PVC transparent shoe box |
| CN106800834A (en) * | 2017-01-17 | 2017-06-06 | 常州众杰复合材料有限公司 | Pultrusion molding process high-performance secondary color mill base and preparation method thereof |
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