BOSTIK 70-05A
Harmonization Code : 3208.20.90 | Paints and varnishes that are dispersed or dissolved in a non aqueous medium
Main features
- High-Strength Structural SMP Bonding
- Primerless Multi-Substrate Adhesion
- UV and Weather Resistance
Product Description
Bostik 70-05A is a one-component, moisture-curing adhesive and sealant based on Silyl Modified Polymer (SMP) technology. Developed for high-strength elastic structural joints, it provides higher green strength and higher tensile strength than Bostik 70-01A and 70-03A while maintaining permanent elasticity. The solvent-, isocyanate-, and PVC-free formulation delivers primerless adhesion on many substrates, excellent UV and weather resistance, and durable performance for transportation and industrial assembly applications.
Key Features
- High-strength SMP adhesive with increased green strength and tensile strength for structural bonding applications.
- Primerless adhesion to many metals, glass, polyester, PVC, and painted or lacquered wood when properly prepared.
- Permanent elasticity with excellent UV and weather resistance from -40°C to 120°C.
- Fast processing with approximately 10-minute skin-forming time and less than 15-minute open time.
Applications / Suitable For
- Trim bonding
- Panel bonding
- Floor bonding
- Bus, caravan, train and truck assembly
- Roof bonding
- Aluminum and polyester corner profile bonding
- Bonding polyester components to metal frames
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Process MethodProcess Method
Moisture curingProduct TypeProduct Type
High-strength SMP adhesive & sealantThermal Properties
Operating TemperatureOperating Temperature
-40°C to +120°C °CAdditional Information
Technical Properties
As-Supplied / Before-Processing Properties
| Property | Value | Unit | Method / Condition |
|---|---|---|---|
| Basic material | Silyl Modified Polymer (SMP) | — | Supplier classification |
| Curing method | Moisture cure | — | One-component system |
| Specific gravity | Approx. 1.5 | g/mL | Typical value |
| Skin-forming time | Approx. 10 | minutes | 20°C / 50% RH |
| Open time | <15 | minutes | 20°C / 50% RH |
| Curing speed after 24 hours | 3 (0.125) | mm (in.) | 20°C / 50% RH |
| Green strength | 500 | Pa | Physical Rheometer MC100 |
| Application temperature | 5–35 (41–95) | °C (°F) | Recommended application range |
| Shelf life | 12 months (18 months for cartridges) | — | Stored unopened at 5–30°C |
Technical Properties
After-Processing / Final-State Properties
| Property | Value | Unit | Method / Condition |
|---|---|---|---|
| Shore A hardness | Approx. 60 | Shore A | DIN 53505 |
| Volume change | <3 | % | DIN 52451 |
| Tensile stress (100%) | 2.7 (390) | MPa (psi) | DIN 53504 / ISO 37 |
| Tensile stress at break | 3.5 (500) | MPa (psi) | DIN 53504 / ISO 37 |
| Elongation at break | 200 | % | DIN 53504 / ISO 37 |
| Shear stress | 3.0 (435) | MPa (psi) | DIN 53283 / ASTM D1002 |
| Tear propagation | Approx. 17 | N/mm | Typical value |
| E-Modulus (10%) | 4.8 (700) | MPa (psi) | Typical value |
| Temperature resistance | -40 to 120 (-40 to 248) | °C (°F) | Continuous service |
| Short-term temperature resistance | 180 (356) | °C (°F) | Maximum 30 minutes |
| UV & weather resistance | Excellent | — | Supplier classification |
