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Description for Bostik 70-37
A one-component, moisture curing, adhesive/sealant based upon Bostik Silyl Modified Polymer (SMP) Technology. Significant product benefits include, fast skinning (<45 mins.), 100% solids, non-yellowing, contains no solvent (alcohols, xylene, etc.), and paint compatible.Note: This material has been discontinued. Please view the Comparable Materials tab or call us at (262) 293-7970 for additional help.
Application Type bond, Seal 1 Part or 2 Part 1-Part Material Form Paste Manufacturer Bostik Chemistry Silyl Modified Polymer (SMP), free of alcohols, xylene Cure Method Moisture Cure Time (min) 1,440 to 2,160 -
Technical Data for Bostik 70-37
Overview
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1 Part or 2 Part
- 1-Part
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Material Form
- Paste
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Industry
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Chemistry
- Solvent-Free - free of alcohols, xylene
- Silyl Modified Polymer (SMP) / MS Polymer - Silyl Modified Polymer (SMP)
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Cure Method
- Moisture / Condensation Cure - Moisture
Specifications
Cure Specs
Cure Time (min) 1,440 to 2,160 Test Method Set Time (min) Fast, 30 to 45 Tack Free Time (min) Fast, 30 to 45 Work / Pot Time (min) 35 to 45 Test Method Thixotropic Medium thixotrophy Bond Strength
Tensile Strength (psi) 150 Material Resistance
UV Resistance Excellent Hardness
Shore A Hardness 45 Elongation (%) 500 Test Method Modulus (psi) 30, 50, 70 Test Method Other Properties
% Solids (%) 1.0 Business Information
Shelf Life Details Bostik 70-37A may be stored for 12 months in a closed (unopened) container in a dry place at temperatures below 80°F (27°C). Shelf Life (mon) 12 -
Best Practices for Bostik 70-37
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Surface Preparation
Substrates should be free of all loose contamination, greases, oils, etc. Use Isopropyl alcohol or other approved solvent for substrate pretreatment.
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Clean-Up
Cleaning tools or removing uncured residue of Bostik® 70-37A can be done with a clean colorless cloth, wetted with Isopropyl alcohol.
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Testing
It is recommended to make a trial first to check possible attack of the substrate by Isopropyl alcohol.
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Comparable Materials for Bostik 70-37
Spec Engine® Results
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Cure Time Test Methods
Cure Time | Test Method |
---|---|
1,440 to 2,160 min | 1/8-inch bead |
Work / Pot Time Test Methods
Work / Pot Time | Test Method | Temperature |
---|---|---|
35 to 45 min | (after 7 days ambient cure at 77°F and 50% RH | 25°C |
Elongation Test Methods
Elongation | Test Method |
---|---|
500 % | (to break) |
Modulus Test Methods
Modulus | Test Method |
---|---|
30 psi | 25% Elongation |
50 psi | 50% Elongation |
70 psi | 100% Elongation |