Sodium polyacrylate XQ-5040
Appearance: light yellow, transparent, viscous liquid Molecular weight:4500±500 Solid content:40±1% Viscosity:≤1000mpa·s（25℃） | Ionic properties: anions Solubility: soluble in water pH: 7 to 9 (1% aqueous solution) Specific gravity: 1.30 (D25/4 °C) |
Product features:
XQ-5040 dispersant is a high-efficiency and low-cost dispersant. It is used in a small amount and does not require additional auxiliary dispersant during the grinding process. The dispersant dosage test results for various pigments show that the optimum amount of XQ-5040 is low and the viscosity of the grinding is also low. Its flat L-shaped dispersion curve indicates that too much dosage will not cause adverse effects. Therefore, an appropriate amount of XQ-5040 can be selected, and the optical and physical properties of the coating remain stable even if the amount of the pigment is changed.
[Viscosity stable]
The viscosity of the coating is exceptionally stable with XQ-5040. After heat aging test (over 50 °C for more than one month), the viscosity still shows no change.
[Excellent gloss retention]
By adding XQ-5040 to varnish and semi-gloss lacquer (including acrylic and acrylic vinyl lacquer), excellent initial gloss can be obtained, and after heat aging, the gloss can be maintained. XQ-5040 has excellent compatibility with ethylene glycol and propylene glycol, so it is easy to use in the grinder.
[complete color development]
XQ-5040 can improve the color and can be used for difficult-dispersible pigments such as iron red. In fact, when the paint factory is toning with a pigment paste, the dispersant is often added to the paint to facilitate coloring. Experience has shown that using XQ-5040 as a pigment dispersant in the toner can not only use a wetting agent without affecting the coloring effect, but also improve water resistance and cost.
[Can be used together with active pigments]
XQ-5040 can be used in combination with active pigments such as zinc oxide. For example, with it as the sole dispersant in the millbase, the zinc oxide content is allowed to reach 2.0%. The resulting paint has a flat viscosity line, and after a month of heat aging test at 50 ° C, the viscosity does not rise (the viscosity difference does not exceed 2 KU), and no other deterioration occurs. When it is used, it is not necessary to add an auxiliary dispersant or a wetting agent such as KTPP or a nonionic surfactant.
[Low foam]
Coatings containing XQ-5040 have very low foaming properties for three reasons. The first is because the dispersant itself has low foaming properties. Second, since there is no need to add additional surfactants, the chance of foaming is reduced. The third reason is that it is highly efficient, so the amount is small. Therefore, after adding XQ-5040, the paint rarely foams during manufacture and use.
[Good scrub resistance]
XQ-5040 itself is used in a small amount, and it is rarely necessary to add other wetting agents to improve dispersibility and toning, which makes the dry paint film excellent in water resistance.
Sodium polyacrylate is a white powder. Odorless and tasteless. Highly hygroscopic. Polymer compounds with hydrophilic and hydrophobic groups. Slowly dissolve in water to form a very viscous transparent liquid. The viscosity of its 0.5% solution is about PA • s. The viscosity is not caused by water absorption and swelling (such as CMC and sodium alginate), but due to the ionic phenomenon of many anionic groups in the molecule, the molecular chain grows, showing an increase in viscosity, and the chemical book forms a highly viscous solution. Its viscosity is about 15-20 times that of CMC and sodium alginate. Heat treatment, neutral salts and organic acids have little effect on its viscosity, but the viscosity increases when it is alkaline. Insoluble in organic solvents such as ethanol. Strong heat to 300 degrees without decomposition. The viscosity changes very little for a long time and is not easy to decay. The viscosity is easily affected by acid and electrolyte. In case of divalent metal
IUPAC
sodium;prop-2-enoate
SMILES
C=CC(=O)[O-].[Na+]
Zhejiang, China
