Kusumoto Chemicals DISPARLON Additives: Thixotropes, Dispersants, Defoamers

Selection and quotation of Kusumoto Chemicals DISPARLON additives: amide wax thixotropes, anti-settling agents, dispersants, defoamers and leveling agents for coatings and sealants.

DISPARLON 6650, 6500 and 6200 Amide Wax Powders

DISPARLON 6650 is an amide wax powder for solvent-borne and solvent-free systems, including epoxy and urethane protective and marine coatings. 6500 is the universal grade for one-component MS, STP and SMP sealants and adhesives, while 6200 activates at a lower temperature than 6500.

6650: 0.5–3.0 % on total formulation
6500 and 6200: 0.5–5.0 %
Powder, 100% active content
6650: activation at 50–70 °C

Pre-Activated Amide Wax Pastes

DISPARLON 6900-20X is the universal amide wax paste in xylene and alcohol for viscosity increase, anti-sagging and anti-settling in solvent-borne systems. A630-20X targets heavy duty, marine, industrial, architectural and wood coatings, A670-20M uses mineral spirits, PFA-231 hydrocarbon.

Pastes with 20% active content
Anti-settling: 0.5–2.0 %
Anti-sagging: 1.0–5.0 %
A670-20M: in mineral spirits

AQ Rheology Additives for Water-Borne Systems

Polyamide pastes AQ-600 and AQ-870 give water-borne paints anti-sagging and anti-settling properties and keep varnishes transparent. AQ-630 suspends and orients metallic and pearlescent pigments in co-solvent rich systems. Liquid acrylic AQ-001 works through association with the emulsion resin.

AQ-600: 0.5–3.0 %
AQ-870: 1.0–6.0 %
AQ-630: 18% active content
AQ-001: 15% active content

Oxidized Polyethylene Anti-Settling Agents

DISPARLON 4200-20 is the universal oxidized polyethylene anti-settling agent with minimal viscosity increase; combined with 6900-20X amide wax it gives a smoother surface. NS-30 suits coatings with high loadings of anti-corrosive pigments, and NS-5500 disperses under low shear with a propeller.

4200-20: 1.0–3.0 %
4200-20: 20% paste in xylene
NS-30: 0.5–2.0 %
NS-5500: 3.0–8.0 %

DA Dispersants for Solvent-Borne Systems

DA-7400, based on polyester acid, amide and amine, stabilizes organic pigments, carbon blacks and TiO2 and is also used in gravure printing inks. DA-765, a modified polyester, serves carbon blacks and organic pigments, and DA-375 inorganic and metallic pigments and floor coatings.

DA-7400: 80% active content
DA-7400: 24–40 % on organic pigment
DA-765: 65–100 % on organic pigment
DA-375: 1.0–3.0 % on inorganics

AQ Dispersants for Water-Borne Systems

AQ-330 is a solvent-free polyether phosphate that reduces viscosity, orients metallic and pearlescent pigments and keeps water resistance. AQ-380 is an acrylic polymer for carbon black and inorganic pigments, AQ-D391 a dispersant for coatings, pigment preparations and inks.

AQ-330: 100% active content
AQ-380: 3.0–10 % on inorganics
AQ-D391: 40% in water
AQ-D391: 25–100 % on organic pigment

DISPARLON Defoamers for Coatings

OX-880EF is an acrylic defoamer in butyl acetate for industrial acrylic and melamine coatings. P-450N controls foam in high viscosity coatings such as solvent-free epoxy flooring and PU waterproof coatings. AQ-501 handles mill-bases and metallic coatings, UVX-188 UV curable and high polar systems.

OX-880EF: 50% active content
P-450N: 0.2–1.0 %
AQ-501: 0.3–1.0 %
UVX-188: 100% solid

Leveling and Anti-Cratering Agents

L-1980N is a 100% active acrylic leveling agent with anti-cratering properties for ambient-cure and baking systems. LHP-90 prevents cratering from oil and wets plastic substrates, LS-460 is a silicone leveling agent for water-borne, solvent-borne and UV systems, LAP-20 adds foam control.

L-1980N: 100% active
LHP-90: 0.2–0.5 %
LS-460: 0.03–1.0 %
LAP-20: 20% in butyl acetate

Incorporating Amide Wax and Anti-Settling Agents

DISPARLON 6650 powder is activated at 50–70 °C with a sand mill and high-speed dissolver; adding 1–2 % of alcohol lowers the dispersion temperature, and no further shear is applied during cooling.

6900-20X paste needs no activation and is incorporated with a high-speed dissolver between room temperature and 50 °C. Stored below 20 °C the paste may form particles, so the container is warmed at 35–40 °C for 24–48 hours before use.

The 4200-20 anti-settling agent is added at the initial stage in a sand mill, attritor, ball mill or three-roll mill between room temperature and 60 °C; with 6900-20X it gives a smoother surface.

Dispersant Dosage on Pigment Weight

DISPARLON dispersant levels are calculated on pigment weight, not on the total formulation. DA-7400 is used at 1.0–4.0 % on inorganic pigments and 24–40 % on organic pigments; DA-765 and water-borne AQ-380 at 3.0–10 % and 65–100 %; DA-375 and water-borne AQ-330 at 1.0–3.0 % and 20–30 %.

For AQ-D391 the manufacturer gives 2.5–25 % for inorganic pigments and body pigments and 25–100 % for organic pigments and carbon black. DA-375 has a controlled acid and amine value, so its impact on water resistance is minimal.

Defoamers and Leveling Agents by System Type

Silicone-free OX-880EF is used in vinyl, acrylic, epoxy, urethane and alkyd/melamine solvent-borne systems. L-1982N and L-1983N suit low to middle polarity systems, L-1980N and L-1984N medium to high polarity, and LF-1985 high solid curing systems.

In the LHP series anti-cratering decreases from 91 to 90, 96 and 95, while recoatability follows the reverse order: LHP-90 goes into primers, LHP-91 into topcoats. LAP-20 also works in curing systems at cold temperature, LAP-30 in high solid coatings.

ELD-2435 is silicone-free and VOC-free, combines defoaming with leveling and replaces silicone and PFAS additives at 0.1–1.0 %.

Amide Wax for MS, STP and SMP Sealants

For one-component MS, STP and SMP sealants and adhesives the manufacturer lists DISPARLON 6500 and 6200 powders at 0.5–5.0 % on the total formulation.

6500 is activated at 80–120 °C in a kneader, planetary mixer or twin-screw extruder and is recommended for modified silicone and urethane sealants and epoxy adhesives; high shear is avoided during cooling.

6200 activates at a lower temperature and is meant for cold-processed sealants, and 6250 is available for the EU market. In an undercoat 6500 may inhibit adhesion with the topcoat, so adhesion is checked in the actual system.

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