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- Manufacturer: Bostik, Inc.
- Product Line: Bostik Transportation Adhesives
- Product: High Quality Adhesives and Sealants
- Industries: Maintenance, Repair, Overhaul | Transportation
- Authorized Countries: Canada | United States
Bostik 70-08A
Bostik® 70-08A is a high-strength, functional SMP-based primerless adhesive for bonding glass, panels, windscreens, and other high-performance assemblies in transportation manufacturing. It has an open time of less than 15 minutes and a full cure time of 24 hours.
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Documents
Specifications
Product type: Automotive adhesive, sealant
Basic material: Silyl modified polymer (SMP)
Curing method: Moisture
Specific gravity: ca. 1.4 g/mL
Skin-forming time: ca. 10 min
Open time: <15 min
Curing speed after 24 hrs: 0.125 in (3 mm)
Shore A hardness: ca. 65
Volume change: Less than 3%
Tensile stress at break: 420 psi (2.9 MPa)
Elongation at break: ca. 225%
Shear strength: 360 psi (2.5 MPa)
Tear propagation: ca. 13 N/mm
Temperature resistance: −40°F to 230°F (−40°C to 110°C)
Application temperature: 41°F to 95°F (5°C to 35°C)
Primary Chemistry:
Silyl modified polymer (SMP)
- Manufacturer: Bostik, Inc.
- Product Line: Bostik Transportation Adhesives
- Product: High Quality Adhesives and Sealants
- Industries: Maintenance, Repair, Overhaul | Transportation
- Authorized Countries: Canada | United States
Manufacturer
Product Line
Industries
Authorized Countries
Canada
United States
Overview
Bostik® 70-08A is an extrudable silyl modified polymer (SMP) based adhesive engineered to achieve primerless bonding between surfaces within transportation manufacturing, including applications where objects may be moved shortly after installation. Bostik® 70-08A is formulated as a black, odorless, heavy paste free of solvents, PVC, and isocyanates.
Bostik® 70-08A can be applied using a handgun or an air pressure gun. It exhibits excellent slump resistance and high tack. Bostik® 70-08A cures upon reaction with moisture to provide an irreversible, vulcanized adhesive with high green strength and exceptional resistance to UV and aging. Bostik® 70-08A can be applied at a temperature range of 41°F to 95°F (5°C to 35°C) and provides excellent resistance upon cure to temperatures from −40°F to 230°F.
Bostik® 70-08A provides an open time of less than 15 minutes, achieving full cure at a rate of 3 mm (0.125 in) of depth after 24 hours. Bostik® 70-08A passes FMVSS 212 requirements for glass glazing applications.
Specifications
Product type: Automotive adhesive, sealant
Basic material: Silyl modified polymer (SMP)
Curing method: Moisture
Specific gravity: ca. 1.4 g/mL
Skin-forming time: ca. 10 min
Open time: <15 min
Curing speed after 24 hrs: 0.125 in (3 mm)
Shore A hardness: ca. 65
Volume change: Less than 3%
Tensile stress at break: 420 psi (2.9 MPa)
Elongation at break: ca. 225%
Shear strength: 360 psi (2.5 MPa)
Tear propagation: ca. 13 N/mm
Temperature resistance: −40°F to 230°F (−40°C to 110°C)
Application temperature: 41°F to 95°F (5°C to 35°C)
Primary Chemistry:
Silyl modified polymer (SMP)
Features & Benefits
- Silyl modified polymer adhesive
- Odorless
- Heavy paste
- Free of solvents, isocyanates, and PVC
- High strength
- Primerless
- High tack
- High green strength
- Passes FMVSS 212 requirements
- Rapid fastening
- Resistance to UV and aging
- Good aging properties
- Good adhesion to various substrates
- Low volume shrinkage
- Low electrical conductivity
Problems Solved
Damage or failure of adhesive due to UV or weather
Slumping or migrating adhesive after placement
Insufficient cure time or required primer from urethane solutions
Applications
Bostik® 70-08A is a premier adhesive solution within the automotive and transportation manufacturing industries. It can be applied successfully across a range of applications, including but not limited to the following:
Bonding windscreens
Glass glazing
Panel bonding
High-performance assemblies
Related Applications
Maintenance, Repair, Overhaul
Transportation
Related Chemistries
Maintenance, Repair, Overhaul
Transportation
Related End Markets
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