Silane-modified polymers are the binders of moisture-curing MS adhesives and sealants. This range covers silyl-terminated polyethers (STPE, also known as MS or SMP polymers) and silylated polyurethanes (SPUR), for elastic sealants, construction adhesives, flooring adhesives and liquid-applied membranes.
Three parameters guide most selections: viscosity, modulus and end-group chemistry.
- Low-viscosity grades suit self-leveling membranes, flooring adhesives and sprayable systems.
- Medium-viscosity grades are common base polymers for cartridge sealants and panel adhesives.
- High-viscosity grades build body in high-strength adhesive formulations.
- High-reactivity grades cure rapidly with atmospheric moisture. Tin-free catalysis is noted on the TDS of the grades that support it.
Use each product page and TDS to compare viscosity, cure behavior and application fit. To benchmark against a grade you already use, send us the reference grade or its TDS.
Comparing grades? Use the MS Polymer Selection Guide, or see our custom MS adhesives and sealants service.
MS Polymer Type STPE
These silyl-terminated polyethers run from low-viscosity bases such as Manta MS2030T to high-viscosity grades such as Manta MS314. Low-modulus grades such as Manta MS27 and Manta MS201S suit joints that must accommodate movement, while higher-modulus grades such as Manta MS7500 are aimed at semi-structural adhesives and high-strength sealants.
| Grade | Viscosity | Modulus | Activity | Density | Tack-Free Time | TDS |
|---|---|---|---|---|---|---|
| MS201S | 18,000 – 28,000 mPa·s | Low | High | approx. 1.0 g/cm³ | – | |
| MS2030T | 6,000 – 10,000 mPa·s | Moderate | Moderate | approx. 1.0 g/cm³ | – | |
| MS2628 | 6,000 – 9,000 mPa·s | High | – | 1.002 – 1.005 g/cm³ | – | |
| MS27 | 28,000 – 38,000 mPa·s | Low | High | approx. 1.0 g/cm³ | – | |
| MS3030T | 10,000 – 15,000 mPa·s | Moderate | Moderate | approx. 1.0 g/cm³ | – | |
| MS314 | 80,000 – 130,000 mPa·s | Low | Medium | 1.002 – 1.005 g/cm³ | 30 min | |
| MS4000H | 15,000 – 30,000 mPa·s | Medium | Low-medium | 1.002 – 1.005 g/cm³ | 30 min | |
| MS7500 | 40,000 – 60,000 mPa·s | High | – | 1.002 – 1.005 g/cm³ | – |
Trimethoxysilyl STPE
Silane-terminated polyethers on a polypropylene oxide backbone. Most grades combine high activity with medium to medium-high modulus. Compare viscosity first, from Manta MS305D at the low end to Manta MS330B at the high end, then choose by the modulus your adhesive or sealant needs.
| Grade | Viscosity | Modulus | Activity | Density | Tack-Free Time | TDS |
|---|---|---|---|---|---|---|
| MS305D | 1,400 – 1,600 mPa·s | High | High | 1.002 – 1.005 g/cm³ | 30 min | |
| MS311 | 4,000 – 5,000 mPa·s | Medium-high | High | 1.002 – 1.005 g/cm³ | 30 min | |
| MS312 | 8,000 – 13,000 mPa·s | Medium-high | Medium | 1.02 – 1.05 g/cm³ | – | |
| MS3303H | 50,000 – 60,000 mPa·s | Medium | High | 1.002 – 1.005 g/cm³ | 30 min | |
| MS3303I | 35,000 – 45,000 mPa·s | Low-medium | High | – | – | |
| MS3303M | 40,000 – 50,000 mPa·s | Medium | High | 1.002 – 1.005 g/cm³ | – | |
| MS3303T | 40,000 – 50,000 mPa·s | Medium | High | 1.002 – 1.005 g/cm³ | – | |
| MS330A | 25,000 – 35,000 mPa·s | Medium-high | High | 1.02 – 1.05 g/cm³ | – | |
| MS330B | 60,000 – 70,000 mPa·s | Medium-high | Medium | – | – | |
| MS330C | 25,000 – 35,000 mPa·s | Medium-high | High | 1.02 – 1.05 g/cm³ | – | |
| MS3310 | 45,000 – 55,000 mPa·s | Medium-high | Medium | 1.002 – 1.005 g/cm³ | – |
High-Reactivity STPE
These polymers cure rapidly on exposure to atmospheric moisture. Manta MS310A and Manta MS313 differ mainly in viscosity. Manta MS350 is a clear, low-viscosity, silicone-reinforced polymer that complements elastic adhesive formulations.
| Grade | Viscosity | Activity | Density | TDS |
|---|---|---|---|---|
| MS310A | 8,000 – 12,000 mPa·s | High | 1.005 – 1.006 g/cm³ | |
| MS313 | 30,000 – 42,000 mPa·s | High | 1.005 – 1.006 g/cm³ | |
| MS350 | 500 – 1,000 mPa·s | High | 1.13 g/cm³ |
SPUR & Specialty Binders
Manta SPUR M3015 and Manta SPUR M3050 are silylated polyurethane resins for moisture-curing sealants and adhesives. Manta MF3 is an alkoxysilane-terminated polyether for elastic sealants and sealing coatings, and Manta MS692 is a low-viscosity silane-modified polyether binder designed for tin-free catalysis.
| Grade | Viscosity | Modulus | Density | TDS |
|---|---|---|---|---|
| MF3 | 1,000 – 2,000 mPa·s | – | 1.02 – 1.05 g/cm³ | |
| MS692 | approx. 150 mPa·s | – | 1.13 g/cm³ | |
| SPUR M3015 | 90,000 – 120,000 mPa·s | Low | 1.02 – 1.05 g/cm³ | |
| SPUR M3050 | 35,000 – 55,000 mPa·s | Medium | approx. 1.0 g/cm³ |
Frequently Asked Questions
What is the difference between MS polymers and SPUR polymers?
Both cure with atmospheric moisture through silane end groups. MS or STPE polymers have a polyether backbone, while SPUR polymers have a polyurethane backbone. Difference Between MS, STPE, SMP, STPU and SPU explains how the chemistry affects cure and UV resistance.
How do I choose a grade for my adhesive or sealant?
Start with viscosity, modulus and end-group chemistry. Low-viscosity grades suit self-leveling membranes, flooring adhesives and sprayable systems. Medium-viscosity grades are common base polymers for cartridge sealants and panel adhesives, and high-viscosity grades build body in high-strength adhesives. The MS Polymer Selection Guide compares them.
Can you suggest a grade close to the one I use now?
Send us the reference grade or its TDS and we will compare it with the grades in this range.
Talk to our technical team
Tell us your application, target properties and estimated quantity. We will suggest grades and arrange documents or samples.