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Indofil Lp30
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Indofil Lp30 is a low-viscosity, thermosetting polyurethane resin specially formulated as a leather finishing binder. Designed for high-performance coatings, it provides excellent film formation, flexibility, and adhesion over leather, textiles, and engineered substrates. Available in solvent-borne, waterborne, or mixed systems, LP30 offers tailored dry time, gloss control, and durability suitable for high-end footwear, upholstery, and garment applications.
Description
Indofil Lp30
Primary Uses
- Leather Coatings
- Durable Topcoat Binder: Serves as the polymer base in PU leather coatings to provide abrasion resistance, flexibility, and durability on shoe uppers, bags, and apparel.
- Adhesion Promoter: Enhances bond strength between leather and layered finishes (e.g., lacquers, pigments, embossing agents).
- Gloss/Sheen Tuner: Used to formulate coatings with varying finish levels—from matte to high gloss—depending on additive load and process.
- Textile Finishing
- Fabric Coatings: Applies PU films on textiles for waterproofing, hand feel, and surface enhancement, often seen in premium rainwear and upholstery fabrics.
- Soft & Stretch Coatings: Delivers flexible, soft-hand coatings that maintain drapability and resistance to flex-cracking in stretch textiles.
- Synthetic Substrate Finishing
- Engineered Leather and Synthetic Skins: Ensures a consistent binder film for printed or coated synthetic leathers used in automotive interiors, furniture, or fashion accessories.
- Non-woven Binder: Functions as a bonding matrix in non-woven coated textile composites, enhancing fiber cohesion and structural integrity.
Secondary Uses
- Wood and Furniture Coats
- Acts as a flexible, yet durable, resin coat for decorative wood veneers or MDF panels in furniture, offering scratch resistance and minimal UV yellowing.
- Industrial Protective Coatings
- Applied in thin PU coatings on metal or composites for industrial machinery interfaces where durability, flexibility, and chemical resistance are needed.
- Craft & Prototyping
- Used by artisans who coat leather or fabric prototypes for functional samples and scaled production tests, benefiting from low viscosity and flexibility.
KEY ATTRIBUTES
- Basic Identification Attributes
- Chemical Name (IUPAC): Polyurethane prepolymer (isocyanate-terminated)
- Common/Trade Name: Indofil LP30
- CAS Number: Not applicable (proprietary mixture)
- HS Code: 3909.50.00 (Polyurethane resins)
- Synonyms: PU binder; Leather PU resin; Thermoset PU resin
- Physical & Chemical Properties
- Physical State: Liquid resin (dispersion or solution)
- Color & Odor: Pale amber to light amber; mild solvent or resinous odor
- Viscosity: Low–medium (20–200 cP), depending on version
- Solids Content: 25–45 % by weight
- pH (if waterborne): Approximately 7.0–8.5
- Dry Time: Tack-free in minutes; full cure in 12–24 hours
- Film Properties: Flexible, abrasion-resistant, flexible to –20 °C
- Adhesion: Excellent to leather, PU substrates, fabric
- Safety & Hazard Attributes
GHS Classification
- Solvent-borne: Flammable liquid, skin/eye irritant, respiratory sensitizer
- Waterborne: Not classified or minimal hazard
Toxicity
- Solvent versions: Moderate irritation risk; may cause headaches or dizziness if inhaled
- Water versions: Low toxicity; non-irritant
Exposure Limits
- Must comply with VOC regulations and occupational exposure limits (e.g., isocyanates)
- Storage & Handling Attributes
Storage Conditions
- Store at 10–30 °C; protect from freezing and direct sunlight
- Store solvent-based versions in well-ventilated, fire-safe areas
Container Type
- Sealed pails or drums (metal for solvent, plastic for waterborne)
Shelf Life
- 6–12 months depending on batch and version
- Avoid moisture exposure for solvent systems; water forms may separate over time
Handling Precautions
- Stir or recirculate before use; avoid water contamination in solvent blends
- Use explosion-proof equipment if handling solvent variants
- Regulatory & Compliance Attributes
- VOC Compliance: Formulated to meet regional VOC standards when used in coated leathers/textiles
- REACH: Components conform to EU environmental safety standards
- ISO/ASTM Standards: Meets common adhesion and abrasion test protocols for leather and textile coatings
- Environmental & Health Impact
- Biodegradability: Waterborne versions largely biodegradable; solvent-borne less so
- Ecotoxicity: Low when cured; uncured isocyanates may pose environmental hazards
- Bioaccumulation: Not expected
- Disposal: Cured waste can be treated as inert; uncured resin and solvents treated as hazardous waste
SAFETY HANDLING PRECAUTIONS
- Safety Handling Precautions
PPE Required
- Solvent-based: NIOSH-approved respirator, gloves, eye protection, anti-static clothing
- Water-based: Gloves and goggles advised for process safety
Handling Guidelines
- Use in fume-hood or spray booth with adequate exhaust
- Prevent ignition or spark generation with solvent-based variants
Storage Measures
- Ensure proper grounding and bond lines for solvent containers
- Keep containers sealed when not in use to prevent moisture or solvent loss
- First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if chemical respiratory symptoms occur
- Skin Contact: Wash thoroughly; solvent versions may dry skin
- Eye Contact: Rinse eyes for 15 minutes; seek medical aid for persistent irritation
- Ingestion: Do not induce vomiting; seek immediate medical attention
- Firefighting Measures
- Fire Hazards
- Solvent-based: Highly flammable; vapor may spread far from source
- Water-based: Not flammable
- Extinguishing Media
- Solvent: Foam, CO₂, dry chemical—do not use water jets
- Water: Water spray or foam acceptable
- Special Precautions
- Use SCBA, fire-resistant clothing, and extinguish surrounding fire sources
- Prevent solvent vapor ignition and ensure container cooling during fire exposure
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