Alkoxy Silane Terminated Polyether Polymer

• CAS No.: 75009-88-0
• Formula: No
• EINECS: No
• Appearance: Liquid
• Usage: Ms Polymer
• Color: White
• Model NO.: STP-668T
• Application: Sealant
• Transport Package: 1ton IBC
• Specification: 98
• Trademark: silink
• Origin: China
• HS Code: 3907299090
• Production Capacity: 1000ton

Product Description

Abstract

STP-668T is alkoxy silane terminated polyether polymer. It could be applied in moisture curing elastic sealant, elastic structure sealant and sealing coatings. Sealants based On STP-668T not only have excellent adhesion properties, but also have adhesion to broad range of substrates. Different from polyurethane and silicone system, this formulation have no solvent and isocyanate, as well as no bubbles and odour generated from curing. It is especially suitable for construction industry, transportation industry and general industry application.

 

 Properties and Features

High Activity , Medium-High Modulus
High transparence
Good adhesion strength and tensile elasticity
Fast curing , non-tin catalysts used if needed, more eco-friendly
Excellent aging and yellowing resistance
Excellent water resistance , resistance to chemical corrosion
Excellent storage stability
Solvent free , odourless , eco-friendly
Could be blended with other  polymers

 

Typical Properties

 

Index	Value
Polymer Type	Silane terminated polyether
Appearance	Pale yellow transparent liquid
Specific Gravity (ρ20), g/cm3	1.0 g/cm3
Boiling Point (760mmHg), ºC	>250ºC
Viscosity (25 ºC), mPa·s	35000-55000 mPa·s (25ºC)
Flash Point, ºC	≥237ºC
Water-Soluble	Virtually Insoluble

 

Applications and Performance

STP-668T polymer is used as base polymer in elastic sealants, elastic structure sealants, encapsulate adhesives and coatings . The curing mode of the polymer is moisture curing, It can be made into a single component or two-components system.
High Modulus sealant
Transportation industry elastic sealant
Personal DIY sealant
Industrial sealant
Eco-friendly decoration sealant

 

Instructions

STP-668T polymer can be quickly dissolved in ordinary organic solvents (such as ethanol), but almost insoluble in water. So the raw materials in the formula system are mostly oil-soluble substances. STP-668T polymer curing mechanism, silane of both ends with the help of the catalyst react with water forming hydrolysis to generate Silanol, Silanol is crosslinked with catalyst to form a siloxane bond,
resulting in a network-like structure. Water is a very important factor during the storage and processing. In order to stabilize the processing and storage, it must add a certain amount of chemical water removal agent, we recommend the use of vinyl trimethoxysilane. Conventional mixing process can be suitable for STP-668T 
POLYMER. For more technical support, please consult our technical engineers.

 

Packing

The available packing of STP-668T is including:

1. 50kg plastic drum lined with aluminum foil bag
2. 200kg drum lined with aluminum foil bag
3. 1000kg IBC

 

Storage and Shelf Life

Because this product is moisture sensitive, If unopened and stored at 4ºC-30ºC dry environment, the shelf life is 12 months. Use it as soon as possible if opened, the remain products should be resealed and stored at 4ºC-30ºC dry environment. But if shelf life expired, you can still use it only after your positive confirmation of production performance.