| CAS No.: | 9003-11-6 |
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| Molecular Principal Chain: | Carbon Chain Polymer |
| Color: | Colorless to Light Yellow |
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Silane-Modified Polyether Ms Polymer STP Resin for Ms Sealant
DmcSeal S250 is a silane-modified resin terminated with trimethoxysilane based on high molecular weight polyether. It has the characteristics of moderate viscosity, high activity, no free isocyanate, no solvent, and excellent bonding performance.
The curing mechanism of DmcSeal S250 is moisture curing. It is necessary to add catalyst in the sealant formulation. Ordinary organotin catalysts or chelated tin can both achieve good mechanical properties. The recommended addition amount of chelated tin is 0.03-0.05%.
DmcSeal S250 resin, combined with plasticizer, nano calcium carbonate, silane coupling agent and other fillers and additives, can be used to prepare sealant products with tensile strength 1.0-4.0MPa, 100% modulus 0.3-1.5MPa, and elastic recovery rate >80%. It can also be used to prepare transparent sealant. It is widely used in building exterior wall, home decoration, industrial elastic sealant, elastic adhesive and so on.
Specifications
| Items | Specification | Test Method |
| Appearance | Colorless to light yellow transparent liquid | By Visual |
| Color Value | 50 Max | APHA |
| Viscosity (mPa·s) | 40000-60000 | 25ºC tested by Brookfield Viscosity Meter |
| PH Value | 6.0-8.0 | |
| Water Content (wt%) | 0.1 Max | Karl Fischer |
| Gravity | 0.96-1.04 | 25ºC water at 1.0 |
| Small | 20 kg/Drum |
| Middle | 200 kg/Drum |
| Big | 1000 kg/IBC |
Storage Condition
Store in a cool place, sealed and stored at room temperature without opening.
The shelf life is for 12 months.
Non-flammable products are transported as conventional chemicals.
20 kg/Drum, 200 kg/Drum, or 1000 kg/IBC
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