Acrytan SN

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Acrytan SN is a water-based acrylic copolymer emulsion used primarily as a binder or film-former in coatings, paints, adhesives, and textile applications. It provides excellent adhesion, flexibility, and durability, along with good resistance to water and weathering.

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Categories: Binders/Resins, Finishing Agents, Sealants and Adhesives Tags: Acrylic Resin, Acrytan SN, Paints and coatings

Description

Table of Contents

Acrytan SN

Primary Uses

Leather Tanning & Retanning
- Used as a synthetic tanning agent (syntan) to improve leather softness and uniformity.
- Enhances fiber dispersion, making leather more flexible and less prone to cracking.
- Often combined with vegetable or chrome tanning for balanced properties.
Lightfast & White Leather Production
- Ideal for white and pastel-colored leathers (e.g., fashion accessories, upholstery) due to its resistance to yellowing.
- Used in automotive leather, footwear, and luxury goods.
Fatliquoring & Softening
- Helps retain natural oils in leather, improving suppleness.

Secondary Uses

Leather Finishing
- Used in top coatings to enhance smoothness and durability.
Textile & Non-Woven Fabric Treatment
- Occasionally applied to synthetic leather (PU/PVC) for better hand feel.
Paper & Packaging Industry
- Used in leather-like paper coatings for premium packaging.

KEY PRODUCT ATTRIBUTE

1. Basic Identification Attributes

Chemical Name: Acrylic copolymer emulsion (exact composition varies by manufacturer)
Common/Trade Names:
- Acrytan SN
- Acrylic textile binder SN
- Polyacrylate emulsion SN
CAS Number: Proprietary blend (typically based on [9003-01-4] for acrylic polymers)
HS Code: 3906.90.90 (other acrylic polymers)
Molecular Formula: (C₃H₄O₂)ₙ (acrylic acid polymer base)
Synonyms:
- Acrylic resin emulsion
- Textile finishing agent SN
- Polyacrylic binder

2. Physical & Chemical Properties

Physical State: Milky white liquid emulsion
Color & Odor: White to off-white; mild characteristic odor
Melting Point: >150°C (film formation)
Boiling Point: ~100°C (water evaporation)
Density: 1.05-1.10 g/cm³ at 20°C
Solubility:
- Water: Dispersible
- Organic solvents: Forms film when dried
pH Level: 6.5-8.5 (typically neutral)
Viscosity: 500-3000 cP (Brookfield, 25°C)
Solid Content: 40-50% by weight
Film Formation Temperature: 20-30°C

3. Safety & Hazard Attributes

Hazard Class (GHS):
- Not classified as hazardous (most variants)
- May contain trace monomers (check SDS)
NFPA Ratings:
- Health: 1
- Flammability: 1
- Reactivity: 0
Exposure Limits:
- No specific OEL established
- General dust limit for particulates: 10 mg/m³
Reactivity:
- Stable under normal conditions
- Avoid strong oxidizers

4. Storage & Handling Attributes

Storage Conditions:
- Store at 5-40°C
- Protect from freezing
- Keep containers tightly closed
Incompatible Materials:
- Strong acids/bases
- Polyelectrolytes
Container Type:
- HDPE drums or IBC tanks
- Stainless steel equipment
Shelf Life: 6-12 months
Special Handling:
- Standard PPE (gloves, goggles)
- Avoid skin contact (may cause sensitization)

5. Regulatory & Compliance Attributes

Regulatory Status:
- REACH registered (for components)
- OEKO-TEX® compliant (most grades)
- FDA compliant variants available
Hazard Symbols (GHS): None typically
Transportation Restrictions:
- Not classified as dangerous goods
- UN number: None required
Waste Disposal Method:
- Coagulate and dispose as solid waste
- Follow local regulations

6. Environmental & Health Impact

Ecotoxicity:
- LC50 (fish): >100 mg/L
- EC50 (daphnia): >100 mg/L
Persistence:
- Not readily biodegradable
Carcinogenicity:
- Not classified (IARC/NTP)
Biodegradability:
- <10% in 28 days (OECD 301B)

SAFETY HANDLING

Safety Precautions

Personal Protective Equipment (PPE)

Gloves: Nitrile or neoprene (chemical-resistant)
Eye Protection: Safety goggles (for liquid/splash risk) or face shield (if handling powder)
Respiratory Protection:
- N95 mask (for dust/powder)
- Organic vapor respirator (if handling solvent-based formulations)
Clothing: Lab coat or chemical-resistant apron

Handling & Storage

Work in a well-ventilated area (use a fume hood if handling solvents).
Avoid skin/eye contact—acrylic compounds can be irritants.
Store in a cool, dry place away from direct sunlight and heat sources.
Keep away from strong oxidizers (e.g., peroxides, chlorates).
Ground containers to prevent static buildup (if flammable solvents are present).

Hygiene Measures

No eating, drinking, or smoking in handling areas.
Wash hands thoroughly after use.
Emergency eyewash/shower must be accessible.

First Aid Measures

Inhalation (Dust/Vapors)

Move to fresh air immediately.
If breathing is difficult, provide oxygen and seek medical attention.

Skin Contact

Remove contaminated clothing.
Wash with soap and water for ≥15 minutes.
If irritation persists, seek medical help.

Eye Contact

Rinse eyes with water for ≥15 minutes (hold eyelids open).
Seek immediate medical attention (risk of corneal irritation).

Ingestion

Do NOT induce vomiting.
Rinse mouth with water.
Seek medical attention if swallowed (risk of gastrointestinal irritation).

Firefighting Measures

Fire Hazards

Combustible (if solvent-based) but not highly flammable in solid/powder form.
May emit toxic fumes (CO, CO₂, nitrogen oxides) when heated.

Extinguishing Media

✔ Dry chemical powder
✔ CO₂
✔ Foam (for liquid forms)
✔ Water spray (to cool containers, but avoid water jets if solvents are present).

Firefighting Precautions

Wear SCBA (self-contained breathing apparatus).
Cool nearby containers with water spray.
Contain runoff to prevent environmental contamination.

Spill & Disposal

Small Spills

Wear PPE.
Absorb with inert material (sand, vermiculite).
Place in a sealed hazardous waste container.

Large Spills

Evacuate area.
Contain spill with barriers (clay, sandbags).
Prevent entry into drains or waterways.

Disposal

Treat as chemical waste (follow local regulations).
Do not pour down drains.