Toynol® DS-195H High-Performance Grinding Dispersant

Toynol® DS-195H High-Performance Waterborne Grinding Dispersant

Abstract

Toynol DS-195H is a nonionic polymeric dispersant developed to solve powder dispersion problems (such as re-coarsening, agglomeration, and high viscosity) in waterborne industrial systems including coatings, inks, and color concentrates. Its core advantage lies in providing a strong dual stabilization mechanism of steric hindrance and charge repulsion, delivering excellent wetting, viscosity reduction, and flocculation control for hard-to-disperse powders such as transparent iron oxide and titanium dioxide. Compared with conventional approaches, it offers high dispersion efficiency, a broad range of applicable powders, and is APEO-free and compliant with environmental regulations, making it a suitable option for improving the performance and stability of waterborne industrial products.

Core Product Information

Item Specification
Model DS-195H
Chemical Description Modified maleic acid styrene-acrylic copolymer with acetylenic diol
Appearance (25 °C) White to light yellow liquid
Color (Pt-Co) ≤350 APHA (measured value: 150)
Solid Content 39-44% (measured value: 40.3%)
Acid Value 10-14 mg KOH/g (measured value: 12.7)

Main Features and Advantages

  • Feature
  • Performance and Advantages
  • High-efficiency dispersion
  • Rapidly wets powders, provides strong charge repulsion and steric hindrance, effectively deflocculates, and significantly reduces grinding viscosity.
  • Broad applicability
  • Delivers excellent results across a wide range of organic and inorganic powders, including transparent iron oxide, aluminum paste, and titanium dioxide.
  • Excellent stability
  • The resulting color concentrates show good centrifugal stability (rated “very good” in tests), stable storage viscosity, and no thickening or thixotropy.
  • Environmentally friendly and safe
  • APEO-free and compliant with increasingly stringent environmental requirements.
  • High cost-effectiveness
  • Moderate dosage with overall dispersion performance comparable to imported products, effectively reducing overall customer cost.

Recommended Application Fields

  • Waterborne industrial coatings: Dispersion of titanium dioxide and various color pigments and fillers in automotive coatings, construction machinery coatings, and coil coatings.
  • Waterborne printing inks: Used in pigment paste preparation to ensure bright colors, fine dispersion, and good stability.
  • High-performance color concentrates: Especially suitable for preparing high-concentration concentrates of hard-to-disperse pigments such as transparent iron oxide and carbon black.
  • Leather finishing agents: Helps pigments distribute uniformly in leather finishing systems, improving coating appearance and performance.
  • Powder surface modification: Used for surface treatment of inorganic powders to improve their compatibility and dispersibility in waterborne systems.

Usage and Recommended Dosage

Addition sequence: Always add dispersant DS-195H to water first, stir until uniform, then add the powdered pigment. This is key to achieving optimum performance.

Pre-dilution: Generally no pre-dilution is needed; it can be added directly. If dilution is required, use deionized water and prepare freshly.

Recommended dosage: The following dosages are based on pigment weight (dispersant calculated on solids content):

  • Transparent iron oxide pigments: 20% – 50%
  • Titanium dioxide: 3% – 7%
  • Other powders: 5% – 50%
  • Note: The specific optimum dosage should be determined through dosage screening based on your formulation and process.

Safety and Storage

  • Safety precautions: Wear appropriate personal protective equipment (such as safety goggles and gloves) during handling. If the product contacts the skin, wash with soap and water.
  • Storage conditions: Store sealed in a cool, well-ventilated, dry place, away from high temperatures and direct sunlight. Recommended storage temperature range: 5 °C to 40 °C.
  • Low-temperature handling: The product may solidify or crystallize at low temperatures; warming it to room temperature and stirring thoroughly restores it to its original state without affecting performance.
  • Packaging: 25 kg drums, 200 kg drums.
  • Shelf life: Under the specified storage conditions, the shelf life is 2 years from the date of manufacture.

Frequently Asked Questions

Q: What types of powders is DS-195H suitable for, and what are its strengths?

A: DS-195H is effective on a wide range of powders, but its standout strengths are in handling transparent iron oxide and titanium dioxide. It effectively solves the tendency of transparent iron oxide to re-coarsen and agglomerate, as well as the problems of uneven titanium dioxide dispersion and oversized particle size, yielding fine, stable pastes.

Q: How compatible is this dispersant with resins in waterborne systems?

A: DS-195H is highly compatible with most waterborne resins. However, to be safe—especially in complex formulations—we strongly recommend a small-scale compatibility test before use to check for anomalies such as flocculation or precipitation.

Q: What is the best time to add DS-195H during grinding?

A: The best time is to add it to the water phase before adding the powder. The correct sequence is: water → DS-195H dispersant → stir until uniform → add the powdered pigment. This sequence ensures the dispersant molecules fully act on the surface of every pigment particle for optimum dispersion.

Q: How do I determine the most economical dosage for my formulation?

A: We recommend starting from the lower end of the recommended range and using dosage screening (for example, trying 3%, 4%, 5% for titanium dioxide) to evaluate dispersion fineness, viscosity, and storage stability. Our technical support team can provide free experimental guidance to help you find the most cost-effective dosage.

Contact Us

  • If you need free samples, a detailed Technical Data Sheet (TDS), or a Safety Data Sheet (SDS), or if you have any technical questions, please contact us at any time:
  • Company: Tianjin Hi-Perferal Advanced Materials Co., Ltd.
  • Address: No. 2-1, Zhenghua Road, Caozili, Wuqing District, Tianjin
  • Technical service hotline: 022-82910362
  • Website: www.surfychem.com