Sbr Latex Manufacturers In Tamil Nadu

SBR Latex (Styrene-Butadiene Rubber latex) is a synthetic rubber emulsion that is widely used in various industries due to its excellent adhesion, flexibility, abrasion resistance, and water resistance.

 Basic Composition

SBR latex is made by the emulsion polymerization of:

Styrene (C₈H₈) – provides hardness and strength

Butadiene (C₄H₆) – provides flexibility and toughness

 Key Properties

Property Description

Appearance Milky white liquid

Solids content 45–55% (varies by grade)

pH 8–10 (alkaline)

Viscosity 50–500 cP (varies with formulation)

Glass Transition Temp. (Tg) ~ -50°C to 0°C depending on styrene content

Film-forming Yes, forms flexible, water-resistant films

Tensile Strength Moderate to high (3–10 MPa typically)

Applications

SBR latex is widely used in:

Construction

Cement and mortar modification: Enhances bonding, flexibility, and water resistance.

Waterproof coatings: For basements, terraces, and tanks.

Adhesives: Tile adhesives and carpet backing.

Paper Industry

Paper and paperboard coating: Improves gloss, printability, and strength.

 Textiles

Non-woven fabrics: As a binder for fibers.

Textile finishing: For improved durability and handle.

 Paints & Coatings

Binder in water-based paints, primers, and sealers.

 Advantages

Good mechanical properties and abrasion resistance

Stable emulsion – long shelf life

Good chemical resistance (to alkalis, mild acids)

Compatible with cementitious materials

Low cost compared to natural rubber

 Limitations

Limited UV resistance

Poor resistance to oil and solvents

May need preservatives to avoid microbial growth in storage

Safety & Handling

Non-toxic in cured form

In liquid form:

Can cause skin and eye irritation

Use PPE (gloves, goggles)

Store in a cool, dry place, away from freezing temperatures