Waterborne Acrylic Resin GA1700 - Excellent Adhesion and Durability for Water-Based Coatings
Product Overview
Waterborne Acrylic Resin GA1700 is an advanced, styrene-free copolymer engineered to deliver industrial-grade durability while maintaining strict environmental compliance. Combining a tailored molecular weight distribution with reactive functional groups, this resin achieves exceptional adhesion (ASTM D3359 Class 5B) and >5,000h QUV-B resistance (ISO 16474-3) in water-based coatings. Designed as a direct replacement for solvent-borne alkyds, it enables VOC-free formulations (<50 g/L, EPA Method 24) without compromising film hardness (Persoz pendulum hardness 200+ seconds) or chemical resistance. Certified for food contact (FDA 21 CFR 175.300) and compliant with EU Ecolabel/Cradle to Cradle Silver standards, GA1700 is ideal for architectural façades, automotive primers, and heavy-duty industrial maintenance coatings.
Chemical Architecture & Synthesis
1. Polymer Design
- Base monomers: Methyl methacrylate (MMA)/butyl acrylate (BA)/acrylic acid (AA) terpolymer.
- Functional modifications:
- 2-Hydroxyethyl methacrylate (HEMA): Provides crosslinking sites for ambient cure.
- Phosphate ester monomers: Enhances substrate wetting on metals/plastics.
2. Manufacturing Process
- Semi-Continuous Emulsion Polymerization:
- Controlled monomer feed at 82–85°C with redox initiator system.
- Post-Crosslinking:
- Carbodiimide-based crosslinkers added during let-down phase.
- Neutralization:
- pH adjustment to 8.5–9.0 using 2-amino-2-methyl-1-propanol (AMP-95).
Technical Specifications
| Parameter | Specification |
|---|---|
| Solid Content | 45±1% (ISO 3251) |
| pH Value | 8.2–8.8 (DIN 53200) |
| Viscosity (25°C) | 500–1,500 mPa·s (Brookfield RV, spindle 3) |
| Minimum Film Forming Temp. | 10°C (ISO 2115) |
| Density | 1.05–1.08 g/cm³ |
| VOC Content | <5 g/L (EPA Method 24) |
Performance Advantages
1. Adhesion & Film Integrity
- Crosshatch adhesion: Class 5B on Bonderite 1000 steel (ASTM D3359).
- Flexibility: Passes 1/8" conical mandrel test at -20°C (ASTM D522).
- Block resistance: >60°C (ASTM D4948) for coil coating applications.
2. Environmental Durability
- QUV-B Resistance:
- ΔE<2.0 after 5,000h exposure (ISO 16474-3).
- 90% gloss retention at 60° geometry.
- Corrosion Protection:
- 1,500h salt spray resistance (ASTM B117) when pigmented with zinc phosphate.
- Blister-free performance in 100% humidity (ASTM D4585).
3. Application Performance
- Drying Profile:
- Tack-free: 15min @23°C/50% RH (ASTM D1640).
- Full cure: 7 days (accelerated: 1h @80°C).
- Spray Characteristics:
- 100% transfer efficiency at 60–80 μm WFT (HVLP systems).
- No cobwebbing at 50–70 psi atomization pressure.
Industrial Applications
I. Architectural Coatings
Exterior Wall Systems
- Elastomeric finishes with 300% elongation (ASTM D2370) for crack bridging.
- Dirt-pickup resistance (DPUR <15) per AAMA 615-2021.
Roof Coatings
- Cool roof formulations with 85+ solar reflectance (ASTM E1980).
- Algae-resistant coatings (EPA FIFRA compliant).
Wood Finishes
- Waterborne alkyd alternative for cabinetry with ambering resistance.
- UV-curable parquet coatings with 4H pencil hardness (ASTM D3363).
II. Industrial Maintenance
Heavy Machinery
- Direct-to-metal (DTM) primers with 10MPa adhesion to rusted steel (ISO 4624).
- Chemical-resistant topcoats for chemical plants (resists 10% H2SO4/NaOH).
Marine & Offshore
- Antifouling tie-coats compatible with copper acrylate systems.
- Splash zone coatings meeting NORSOK M-501 Category 4.
Automotive
- Electrocoat primers with 20μm throw power (Ford CETP 00.00-L-467).
- Plastic bumper coatings passing GM 9505P gravelometer testing.
III. Packaging & Consumer Goods
Food Contact Coatings
- Can linings compliant with FDA 175.300 for acidic beverages (pH>4.5).
- Microwave-safe container coatings with <0.5% extractables.
Printing Inks
- Overprint varnishes with 90° gloss and <10s heat resistance.
- Flexographic inks for recyclable paperboard (TAPPI T830 compliant).
Formulation Guidelines
1. Architectural Systems
- Exterior Emulsion Recommendation:
- 30–35% GA1700 resin
- 5% TiO2 (rutile, chloride process)
- 2% cellulose thickener (30,000 mPa·s)
- Cure schedule: 7 days @25°C/50% RH
2. Metal Coatings
- DTM Primer Formula:
- 40% GA1700 resin
- 15% zinc phosphate (anticorrosive)
- 3% BYK-346 wetting agent
- Dry film thickness: 50–75μm
3. Wood Finishes
- Waterborne Alkyd Replacement:
- 25% GA1700 resin
- 10% soybean oil-modified polyurethane dispersion
- 0.5% Tego Foamex 810 defoamer
- Sanding time: 2h @23°C
Quality Assurance
- Certifications: ISO 9001:2015, ISO 14001:2015, GMP for food-contact grades.
- Batch Consistency:
- Viscosity tolerance ±5%
- pH variation ±0.2 units
- Traceability: LOT-controlled production with blockchain documentation.
Packaging & Storage
- Standard Units: 1,000 kg IBC totes with nitrogen blanket.
- Retail Sizes: 25 kg HDPE pails with tamper-evident lids.
- Storage Conditions:
- 5–30°C, avoid freezing
- 12-month shelf life in unopened containers
Sustainability Profile
- Renewable Content: 30% bio-based carbon (ASTM D6866).
- Carbon Footprint: 1.2 kg CO₂e/kg resin (50% below industry average).
- Water Conservation: Closed-loop rinsing in production (0 wastewater discharge).
Competitive Advantages
- Performance Parity: Matches solvent-borne alkyds in hardness/chemical resistance.
- Regulatory Edge: Exceeds China GB 30981 VOC limits for industrial coatings.
- Application Flexibility: Compatible with spray, dip, and roll-coat processes.
- Technical Support: Custom Tg adjustment (-20°C to +50°C) available.
Conclusion
Waterborne Acrylic Resin GA1700 bridges the gap between ecological responsibility and industrial performance, offering formulators a robust platform for next-generation sustainable coatings. Its engineered polymer architecture delivers unmatched adhesion across diverse substrates while maintaining compliance with global VOC regulations. From weather-defying architectural facades to chemically aggressive industrial environments, GA1700 empowers coatings to meet stringent durability requirements without compromising environmental goals. Backed by ISO-certified manufacturing and comprehensive technical support, this resin represents the future of high-performance water-based coating technology.
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About Beijing TDD E-commerce Co., Ltd.
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