Clear silyl-terminated polyether flowing onto a surface (Manta MS314)

Low-Modulus MS Polymer | Manta MS314

Manta MS314 is an alkoxysilane-terminated polyether (STPE, also known as silane-modified polymer) on a polypropylene oxide backbone, with medium activity and low modulus. It is used as a base polymer for moisture-curing elastic sealants, elastic structural adhesives and sealing coatings in construction, general industry and transportation.

Grade: MS314
Chemical Name: Silane-modified polyether
Form: Colorless, transparent viscous liquid

Overview

Manta MS314 is an alkoxysilane-terminated polyether (STPE, also known as silane-modified polymer, SMP) based on a polypropylene oxide (PPO) backbone. Its alkoxysilane groups hydrolyze and crosslink on exposure to moisture at room temperature, which makes MS314 suitable for moisture-curing elastic sealants, elastic structural adhesives, potting compounds and sealing coatings.

Compared with conventional silicone and polyurethane sealants and adhesives, MS314 is solvent-free and isocyanate-free, suitable for low-VOC formulations and gives a paintable surface. It cures without bubble formation and adheres well to many substrates. Its high transparency makes it suitable for clear sealants, coatings and adhesive systems.

MS314 and Manta MS27 are both low-modulus grades. MS314 has medium activity, a colorless, transparent appearance and a viscosity of 80,000 – 130,000 mPa·s at 25 °C, while MS27 has high activity and a viscosity of 28,000 – 38,000 mPa·s at 25 °C.

Key Features

Medium activity and low modulus; cures at room temperature
High transparency for clear sealants, coatings and adhesive systems
Viscosity designed for compounding in filled elastic systems
Good resistance to aging, yellowing, water and chemical solvents in cured formulations
Good bond strength on many substrates
Solvent-free, low odor and free of isocyanates; suitable for low-VOC formulations
Good storage stability; can be blended with other polymers

Specifications

Typical properties of Manta MS314
Property	Typical Value
Appearance	Colorless, transparent viscous liquid
Flash Point	> 100 °C
Viscosity (25 °C)	80,000 – 130,000 mPa·s
Density (25 °C)	1.002 – 1.005 g/cm³
Tack-Free Time	30 min
Activity	Medium
Modulus	Low

Typical values from the current Technical Data Sheet.

Applications

Adhesives and sealants: base polymer for moisture-curing adhesives and sealants
Elastic structural adhesives: formulations requiring elastic bonding and reliable adhesion
Potting compounds: moisture-curing potting and encapsulation systems; electrical properties to be verified in the final formulation
Coatings: flexible sealing coatings and protective coatings
Market segments: bonding and sealing in construction, general industry and transportation; new energy applications are subject to testing

Processing

Moisture sensitivity: Manta MS314 reacts with water and atmospheric moisture. Exclude moisture during storage and production to prevent premature hydrolysis and crosslinking.

Fillers: the MS314 content can be adjusted flexibly. It is compatible with most common fillers, including nano (precipitated) calcium carbonate, ground calcium carbonate, fumed silica, silica powder, diatomaceous earth and aluminum hydroxide.

Drying: dry fillers thoroughly before compounding. Vinyltrimethoxysilane (VTMO) is commonly used as a water scavenger.

Plasticizers: suitable plasticizers include phthalates (e.g., DINP, DIDP), polypropylene glycol (PPG) and other low-molecular-weight polyethers.

Additives: adhesion promoters, antioxidants, fungicides and light stabilizers can be added to adjust the end-use properties.

Related applications: Adhesives & Sealants

Packaging & Storage

200 kg steel drum with aluminum-foil liner bag;

1,000 kg IBC (tote);

Other pack sizes available on request.

Shipped as ordinary chemical goods; refer to the SDS for transport information.

Safety and Storage

Store in the tightly closed original container in a cool, dry place, protected from direct sunlight. Shelf life: 12 months from the date of production when stored as recommended. For handling and disposal, follow standard chemical safety practice and the current Safety Data Sheet (SDS).

Note: The values in this data sheet are typical values and are not intended for use in preparing specifications. Users should test the product to determine its suitability for their specific application.

Documents

Technical Data Sheet · PDF Download TDS
SDS and COA · on request Request Documents

Frequently Asked Questions

How does Manta MS314 differ from Manta MS27?

Both are low-modulus polymers for moisture-curing systems. MS314 has medium activity, a colorless, transparent appearance and a viscosity of 80,000 – 130,000 mPa·s at 25 °C, while MS27 has high activity and a viscosity of 28,000 – 38,000 mPa·s at 25 °C. The choice depends on the reactivity, clarity and compounding viscosity your formulation needs.

Which fillers and plasticizers can be used with Manta MS314?

MS314 is compatible with most common fillers, including nano (precipitated) calcium carbonate, ground calcium carbonate, fumed silica, silica powder, diatomaceous earth and aluminum hydroxide. Suitable plasticizers include phthalates such as DINP and DIDP, polypropylene glycol and other low-molecular-weight polyethers. Dry fillers thoroughly before compounding.

Can I test Manta MS314 before placing an order?

Yes. Samples are charged. The sample fee includes courier delivery and is deducted from your first formal order. Use Request a Sample and state the quantity and your application. The TDS is on this page; SDS and COA are available on request.

Need a finished adhesive or sealant rather than the polymer? See our custom MS adhesives and sealants service.

Talk to our technical team

Tell us your application, target properties and estimated quantity. We will suggest grades and arrange documents or samples.

Send an Inquiry Request a Sample