Simson ISR 70-05 AP



Simson ISR 70-05 AP is a high quality elastic adhesive based on Silyl Modified Polymer (SMP). It has a good initial tack and a high mechanical strength. It is suitable as adhesive for structures in industrial applications requiring high strength. Can also be used for sealing applications. Simson ISR 70-05 AP has excellent resistance to UV, weather and temperature and is free of any solvent, isocyanate and silicone. It exhibits excellent adhesion performance on a wide variety of substrates (minimal or no pretreatment necessary) and can be overpainted with common industrial paints. Simson ISR 70-05 AP used with the Dual SMP® technology guarantees an increased and controlled cure speed and reliability in the production process and extends the application possibilities.


- Elastic bonding and sealing in e.g. bus and train construction
- Bonding of roofs on busses and trains
- Bonding of corner profiles of aluminum or polyester on busses and train
- Bonding of polyester parts on metal frames
- Bonding of floor systems
- Quick strength build up
- Primerless adhesion
- Safe for workers and environment
- Solvent, isocyanate and PVC free
- Very good UV-resistance and ageing properties
- In general good adhesion on several substrates without the use of a primer
- Elastic in a temperature range of -40°C to +110°C.
- Neutral, odorless and fast curing
- Paint compatible with most industrial paint- or lacquer systems, both alkyd resin and dispersion based (due to the large scale of different types of industrial paints a paint compatibility test is recommended)
- Paintable after skin forming (wet on wet); this will not significantly influence the curing speed
In general, Simson ISR 70-05 AP adheres well without primer on clean, dry, dust- and grease free substrates of aluminum, stainless steel, galvanized steel, zinc, copper, brass, powder coated metal, most lacquered metal surfaces, glass, PVC, polyester (GRP), painted and lacquered wood, etc. No adhesion on untreated polyethylene, polypropylene and teflon. In those cases where, due to great thermal or physical loads and especially under wet conditions, high adhesion demands are needed, the use of Simson Prep M is recommended. Prep M degreases and prepares the surface of the substrate in one step. On plain, untreated wooden surfaces and other porous substrates Simson Prep P is recommended. For more details concerning Prep M and Prep P consult the specific Technical Data Sheets. For not mentioned substrates and additional information consult Bostik.
Simson ISR 70-05 AP can be stored for 18 months in cartridges and 12 months in sausages, in an original, unopened container in a dry place at temperatures between +5°C and +30°C.
The following publications are available on request: - Material Safety Data Sheets (MSDS)
The information given and recommendations made herein are based on Bostik’s research only and are not guaranteed to be accurate. The performance of the product, its shelf life, and application characteristics will depend on many variables, including the kind of materials to which the product will be applied, the environment in which the product is stored or applied, and the equipment used for application. Any change in any of these variables can affect the product’s performance. It is the buyer’s obligation, prior to using the product, to test the suitability of the product for an intended use under the conditions that will exist at the time of the intended use. Bostik does not warrant the product’s suitability for any particular application. The product is sold pursuant to Bostik’s Terms and Conditions of Sale that accompanies the product at the time of sale. Nothing contained herein shall be construed to imply the nonexistence of any relevant patents or to constitute permission, inducement, or recommendation to practice any invention covered by any patent, without authority from the owner of the patent.
ISimson ISR 70-05 AP can easily be extruded with a handor air pressure gun at temperatures between +5°C and +35°C. In sealing applications ISR 70-05 AP should be tooled or smoothened within 10 minutes (at 20°C/50% R.H.) with a spatula or putty knife, occasionally moistened with a soap solution. Avoid soap solution penetrating between joint sides and sealant, because this will create loss of adhesion.
In bonding applications, the substrates have to be assembled within 15 minutes (at 20°C/50% R.H.) after applying Simson ISR 70-05 AP. In general an adhesive thickness of 2 mm is recommended. At a temperature of +20°C and a relative humidity of 50%, Simson ISR 70-05 AP can be painted with the most industrial paints already 10 minutes after application. Best adhesion of paint coats is generally obtained if painted within 4 hours after applying Simson ISR 70-05 AP. Cleaning tools or removing uncured residue of Simson ISR 70-05 AP can be done with a clean colourless cloth, wetted with Simson Liquid 1. It is recommended to make a trial first to check possible attack of the substrate by Liquid 1.



Basic material

Silyl Modified Polymer (SMP)

Curing method


Specific gravity


ca. 1.5

Skin forming time
20°C/50% R.H.


ca. 15

Opening time
20°C/50% R.H.


< 15

Curing speed after 24 hrs 20°C/50% R.H.


ca. 3

Shore A hardness
DIN 53505

ca. 60

Volume change
DIN 52451



Tensile stress
(100%) DIN 53504/ISO 37


ca. 2.3

Tensile stress at break
DIN 53504/ISO 37


ca. 2.7

Elongation at break
DIN 53504/ISO 37


ca. 180

Shear stress *
DIN 53283/ASTM D1002


ca. 3

Tear propagation **
DIN 53515/ISO 34


ca. 17

E-Modulus (10%)


ca. 5.5

Solvent percentage



Isocyanate percentage



Glass transition (Tg)



Temperature resistance


- 40 till + 110

Application temperature


+5 to +35

UV- and weather resistance



White, grey, black


290 ml cartridges, 400 ml and 600 ml sausages

* Alu-Alu; adh. thickness 2 mm, test speed 50 mm/min.
** Type C, test speed 500 mm/min.