Water based ink dispersant - expert in anti flocculation and anti agglomeration solutions
In response to the common pain points of pigment coagulation, aggregation, and sedimentation in water-based ink systems, this product relies on polymer block copolymer technology and utilizes the dual mechanism of strong adsorption by multiple anchor points and steric hindrance to achieve long-term stable dispersion of pigment particles. Its core advantages are as follows:
1. This product has excellent anti flocculation and anti aggregation properties, with multiple aromatic cyclic amine and amide anchoring groups in its molecular structure. It can tightly adsorb on the surface of inorganic pigments such as titanium dioxide and iron oxide, phthalocyanine, azo organic pigments, and difficult to disperse carbon black, forming a 10-15nm thick three-dimensional protective layer that completely blocks direct contact between particles and prevents flocculation. After 7 days of thermal storage testing at 50 ℃, the particle size increased by less than 10%, and the Zeta potential remained stable in the range of -30~-50mV, ensuring that the system remained in a static stable state for a long time.
2. The entire system is compatible and adaptable to diverse scene requirements. The universal models recommend RK-4059 and RK-4039AC, which can cover a full range of water-based digital inkjet, industrial paint, and ink categories. They have strong adsorption force for metal oxides such as nano TiO ₂ and Al ₂ O3, and adopt a low surface tension design of 25-35mN/m. They are perfectly adapted to nozzle level nano grinding technology, avoiding clogging from the root. For 57:1 lake pigments, they can achieve 1-year storage without gelation.
Recommended for Carbon Black:RK-4039AC, RK-4057
For high pigment carbon black, this product relies on a high hydrophobic segment structure to increase blackness. With only 25-60% addition, a 35% solid content color paste can be made, and the particle size can be controlled within 200nm, solving the old problem of traditional dispersants easily returning to coarse settling. Environmentally friendly RK-4059 is recommended, with no APEO and low VOC formula. It has passed the EU EN71-3 toy safety certification and is suitable for food contact inks and indoor coatings. It has a pH tolerance of 4-12 and is also compatible with two-component epoxy systems.
Significant increase in process efficiency
-Adding the dispersant during the grinding stage can reduce the viscosity of the system by more than 50%, shorten the grinding time by 30%, and increase the glossiness of the final product by 20%;
-During the storage stage, the pigment particles are maintained in a suspended state through an entropy repulsion stabilizing layer, effectively suppressing soft/hard settling. After 14 days of cold and hot cycling at -5 ° C to 40 ° C, the system showed no delamination or phase separation;
-During the construction phase, the leveling performance of the system can be optimized to suppress floating color and flower defects, while adapting to the rheological requirements of high shear spraying and low shear roller coating construction processes.
After a digital inkjet ink production enterprise imported RK-4059 dispersant and optimized the formula, the viscosity of the ink system decreased from 18mPa · s to 12mPa · s, and the incidence of nozzle clogging failure decreased by 90%; After accelerated thermal storage at 50 ℃ for 7 days of stability testing, the increase in pigment particle size D50 was only 8%, and the printing color gamut space of the final ink product was expanded by 15% compared to the original formula.
Choosing this product means choosing the three in one solution of "anti flocculation+anti aggregation+full compatibility" to help water-based inks achieve a perfect balance between high stability, high coloring power, and environmental friendliness.
