Pigment preparation, method for producing the same and its use
A technology for formulations and pigments, applied in the direction of pigment slurry, application, organic dyes, etc., which can solve problems such as poor mixing dispersibility
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Embodiment 1
[0049] Embodiment 1 (sedimentation properties)
[0050] In Table 1 the compositions of the aqueous carbon black dispersions are shown.
[0051] Table 1
[0052]
[0053] Alkanols S2 are compounds of the general formula 1 in which p=2, m=2 and n=16 from Tego (fatty alcohol ethoxylates).
[0054] Alkanols S20 are compounds of the general formula 1 with p=2, m=20 and n=16 from Tego (fatty alcohol ethoxylates).
[0055] Alkanol S60 is a compound of the general formula 1 with p=2, m=60 and n=16 from Tego (fatty alcohol ethoxylates).
[0056] Alkanols S100 are compounds of the general formula 1 with p=2, m=100 and n=16 from Tego (fatty alcohol ethoxylates).
[0057] Alkanol L23P is a compound of general formula 1, where p=2, m=23 and n=10, from Tego (fatty alcohol ethoxylates).
[0058] Brij 58 is a compound of general formula 1 where p=2, m=16 and n=20, ex Aldrich (fatty alcohol ethoxylates).
[0059] Brij 98 is of the formula CH 3 -(CH 2 ) 7 -CH=CH-(CH 2 ) 7 -CH 2 ...
Embodiment 2
[0092] Example 2 (time dependence of dispersibility)
[0093]In order to study the time dependence of the dispersibility of spray-dried pigment formulations, 5 g of pigment formulation 1 according to the invention were added to 95 g of completely deionized water, the pH of which was adjusted to 8-9 with AMP 90, and Stirring was performed for 0.5, 1, 2 and 3 hours on a RETbasic type magnetic stir plate from the company IKA using a triangular magnetic stirrer bar.
[0094] Then, 1 g of the suspension obtained was diluted with 19 g of completely deionized water and a sedimentation curve was recorded using a Lumifuge 116 Stability Analyzer from the company L.U.M. GmbH.
[0095] Measurement parameters:
[0096] 1. 10 measurement curves of 30sec each, n=2000rpm, light factor 3
[0097] 2. 200 measurement curves of 120sec each, n=2000rpm, light factor 3.
[0098] The results obtained are shown in image 3 middle.
[0099] After 3 hours, the pigment formulation 1 according to t...
Embodiment 3
[0107] Embodiment 3 (printing test containing pigment ink)
[0108] In the following examples, pigment formulations according to the invention were formulated into inks for inkjet printing and used for printing tests.
[0109] 1. Prepare wetting agent solution
[0110] Add water and dissolve the alkanol S 20 by heating to no higher than 60°C; after cooling, adjust to basic pH with AMP 90.
[0111] 2. Add paint
[0112] With slow stirring (either by hand or using a slow mixer), the pigment is gradually added to the prepared wetting agent solution a little at a time.
[0113] 3. Scatter
[0114] Disperse the pigment dispersion prepared in step 2 using a bead mill.
[0115] In Table 3 the compositions of the aqueous pigment dispersions are shown.
[0116] table 3
[0117]
[0118] Pigment Red 122 is a magenta pigment available from Sun under the tradename Sunfast Red 122.
[0119] Pigment Blue 15:3 is a blue-green pigment available from Clariant under the traden...
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