Coating Additives

Coating Additives

Additives for Architectural Coatings

Architectural coatings rely on functional additives to improve processing, stability, application performance, and final film properties. These additives are typically used at low dosage but have a critical impact on product quality.

  • Rheology Modifiers (Thickeners),Control viscosity, sag resistance, leveling, and storage stability.
  • Dispersing Agents,Help wet and stabilize pigments and fillers.
  • Defoamers (Anti-Foaming Agents),Eliminate foam during production and application.
  • Wetting Agents / Surfactants,Improve substrate wetting and pigment dispersion.
  • Coalescing Agents,Help latex particles form a continuous film.
  • Biocides (In-can & Dry-film Protection),Prevent microbial contamination.

List of coating additives

  1. 1
    Dispersant

    CategoryProduct NameProduct TypeActive ContentProduct FeaturesBenchmark Brands
    DispersantDP-3000Sodium Polycarboxylate42-46%A general-purpose dispersant that provides excellent dispersion of titanium dioxide and inorganic fillers, featuring high dispersion efficiency and good storage stability.Dow Fast Easy, Nopco 5040, Nouryon 602N
    DP-3000NAmmonium Polycarboxylate42-46%A general-purpose dispersant that provides excellent dispersion of titanium dioxide and inorganic fillers, featuring high dispersion efficiency and good storage stability. Due to the volatilization of ammonium salts, it offers better water resistance than DP-3000.
    D-3010Hydrophobic Copolymer Dispersant30%Excellent water resistance, high dispersion efficiency, and low foaming make it suitable for dispersing pigments and fillers in exterior emulsion paints and water-based industrial coatings.Nopco 5027, Dow 731A

  2. 2
    Wetting Agent

    CategoryProduct NameProduct TypeActive ContentProduct FeaturesBenchmark Brands
    Wetting AgentWA-090Isomeric Alcohol Polyoxyethylene Ether/An environmentally friendly nonionic surfactant free of APEO, featuring rapid wetting, resistance to gel formation, and ease of use.Dow, Clariant

  3. 3
    Defoamer

    CategoryProduct NameProduct TypeActive ContentProduct FeaturesBenchmark Brands
    DefoamerDF-007LMineral Oil Fatty Acid Soap DefoamerApproximate100%A mineral oil-based defoamer with good compatibility, widely used in architectural coatings, waterproof coatings, papermaking, and water-based adhesives.Nopco NXZ
    DF-008LSilicone Modified Polyether Defoamer15%Offers excellent dynamic defoaming, anti-foaming performance, and long-lasting defoaming capability, with good compatibilityNopco NXZ

  4. 4
    Preservative

    CategoryProduct NameProduct TypeActive ContentProduct FeaturesBenchmark Brands
    PreservativeSIP-03Kathon Preservative2.50%High-efficiency, broad-spectrum preservative and biocide suitable for water-based and formaldehyde-sensitive systemsLanxess, Troy
    SIP-05BIT+MIT5%Blended eco-friendly product with broad-spectrum antimicrobial activity, suitable for high-temperature and high-pH environmentsLanxess, Troy
    SIP-20BIT20%Features excellent thermal stability and a wide pH range, low toxicity, and is biodegradableLanxess, Troy

  5. 5
    Coalescing Agent

    CategoryProduct NameProduct TypeActive ContentProduct FeaturesBenchmark Brands
    Coalescing AgentTEX-12Texanol/The most widely used film-forming aid in emulsion paints; insoluble in water with high film-forming efficiency. Improves the water resistance and scrub resistance of the paint filmEastman Texanol

  6. 6
    Rheology & Thickener

    CategoryProduct NameProduct TypeActive ContentProduct FeaturesBenchmark Brands
    Rheology &
    Thickener
    RM-628ASE (Alkali-Soluble Emulsion)28%High yield value and gel structure; when used in combination with other thickeners, it prevents sagging and is particularly suitable for textured coatings. Resists sedimentationDow ASE-60
    RM-930HASE (Hydrophobically modified Alkali-Soluble Emulsion)30%Primary thickener for water-based coatings; provides an optimal balance between anti-sagging and leveling properties, with excellent flow and application drapeDow TT-935, BASF, Arkema
    RM-D73030%Anionic rheology modifier, very similar to high-molecular-weight cellulose ether thickeners, with anti-sagging propertiesDow DR-72
    RM-220HEUR (Hydrophically modified Ethoxylated Urethane)20%A low-odor, high-efficiency high-shear viscosity rheology modifier that provides excellent levelingDow RM-2020
    RM-81017.50%High-efficiency KU viscosity thickener, which can also serve as a high-shear rheology modifier in systems with large-particle-size emulsionsDow RM-8W
    RM-82525%High-efficiency KU and Brookfield viscosity thickener that improves sag resistance while maintaining excellent leveling propertiesDow RM-12W

  7. 7
    Hydroxyethyl Cellulose - Thickener

    CategoryProduct NameProduct TypeActive ContentProduct FeaturesBenchmark Brands
    Hydroxyethyl Cellulose - ThickenerHEC-PT30WSE1600-2600cps/Suitable for water-based emulsion paints and textured coatings, featuring high thickening efficiency, product stability, and good mold resistanceNatrol250HBR
    HEC-PT50WSE2600-3400cps/Natrol250HHBR

Recommended Applications

  • Interior Paints
  • Exterior Paints
  • Decorative Architectural Coatings
Interior Paints

Interior wall paint typically refers to water-based emulsion paint systems, primarily used for interior wall decoration in residential and commercial buildings. Its core requirements are:

  • Good hiding power and whiteness
  • Excellent flow and workability
  • No brush marks or splatter
  • Environmentally friendly, low VOC
  • Excellent scrub resistance

1. Basic Formulation Structure of Interior Wall Paint, Interior latex paint generally consists of four core components:

  • Film-forming agent (emulsion): Styrene-acrylic / pure acrylic emulsion
  • Pigments and fillers: Titanium dioxide + calcium carbonate + kaolin
  • Additives for water-based systems
  • Functional additives (source of key performance properties)

2. Classification and Functions of Core Additives

2.1 Thickeners / Rheology Modifiers, Control viscosity, prevent sagging, and improve application feel

2.2 Dispersants, Used to stabilize titanium dioxide and fillers

2.3 Defoamers,Eliminate bubbles formed during production and application

2.4 Wetting Agents, Improve pigment wetting and spread on the substrate

2.5 Coalescing Agents,Assist in emulsion film formation

2.6 Biocides,Classified as:

  • In-can biocides
  • Dry-film fungicides

2.7 pH Adjusters,Common types:

  • Ammonia solution
  • AMP-95-type amine neutralizers

2.8 Leveling and Surface Additives

  • Acrylic leveling agents
  • Silicone leveling agents
Exterior Paints

Exterior architectural coatings are designed for harsh weather exposure, including UV radiation, rain, temperature cycling, and pollution. Compared with interior paints, they require:

  • Strong weather resistance (UV + hydrolysis stability)
  • Excellent water resistance & hydrophobicity
  • Anti-fungal / anti-algae protection
  • Crack resistance and flexibility
  • Long-term color retention

Exterior Paint Types (Product Systems)

1 Acrylic Exterior Paint (Most common)

  • Binder: Pure acrylic emulsion
  • Application: Residential & commercial facades
  • Advantages:
    • Excellent UV resistance
    • Good flexibility
    • Strong adhesion

2 Styrene-Acrylic Exterior Paint

  • Binder: Styrene-acrylic emulsion
  • Advantages:
    • Cost-effective
    • Good water resistance
    • Moderate durability

3 Silicone-Modified Exterior Paint

  • Binder: Silicone acrylic / siloxane modified system
  • Advantages:
    • Superior water repellency
    • High breathability (low dirt pickup)
    • Excellent durability

4.Elastomeric / Crack-bridging Paint

  • High flexibility system
  • Used for:
    • Hairline cracks
    • Concrete facades
  • Features:
    • Thick film
    • High elongation
Decorative Architectural Coatings

Decorative architectural coatings refer to surface finishing systems used for aesthetic + protective purposes in residential, commercial, and public buildings. Compared with industrial coatings, the focus is:

  • Visual appearance (color, texture, gloss)
  • Design effects (stone-like, metallic, matte, artistic)
  • Easy application
  • Moderate-to-high durability depending on system

They are widely used on:

  • Interior walls & ceilings
  • Exterior façades
  • Decorative feature surfaces (columns, reliefs, panels)

Main Categories of Decorative Architectural Coatings

1 Flat / Matte Emulsion Paint (Basic decorative paint)

  • Most common interior wall paint
  • Smooth, low-sheen finish
  • Cost-effective

Key features:

  • Good hiding power
  • Easy application
  • Low VOC water-based system

2 Satin / Eggshell Paint

  • Slight gloss, more washable than matte
  • Used in living rooms, offices, corridors

Key features:

  • Better scrub resistance
  • More elegant appearance
  • Balanced cost-performance

3 High-Gloss Decorative Paint

  • Reflective surface finish
  • Used for luxury interiors or feature walls

Key features:

  • Strong film formation
  • High leveling requirement
  • Requires advanced rheology control

4 Texture / Relief Coatings (Decorative effects)

Includes:

  • Sand texture paint
  • Stone texture coatings
  • Roll-pattern coatings

Key features:

  • 3D visual effect
  • High viscosity system
  • Strong anti-sag performance

5 Stone-like / Granite Paint (Exterior decorative system)

  • Multi-color particle system
  • Mimics natural stone façade

Key features:

  • High durability
  • UV resistance required
  • Complex multi-phase formulation
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