LYRIN
Product No.:LN-590
Product description
Structural formula:

Empirical formula: C6H16O3SSi
Molecular weight: 196.34
CAS No.: 4420-74-0
Chemical name:
γ-Mercaptopropyl trimethoxysilane
Properties
LN-590 is a bifunctional organosilane possessing a reactive organic mercapto and a hydrolysable inorganic methoxysilyl group. The dual nature of its reactivity allows it to bind chemically to both inorganic materials (e.g. glass, metals, fillers) and organic polymers (e.g. thermoplastics, thermosets or elastomers) thus functioning as adhesion promoter, crosslinker agent, surface modifier or reactive reagent.
It is a clear, colorless liquid with a slightly mercaptan odor. It is soluble in alcohols, ketones and aliphatic or aromatic hydrocarbons.
Technical data
Typical characteristics | Value |
Appearance | colorless transparent liquid |
Purity | ≥97.0% |
Density at 25℃ | 1.057g/ml |
Boiling point at 760mmHg | 93℃ |
Flash point | 88℃ |
Refractive index (20℃) | 1.440 |
Reactivity
In the presence of water, the methoxy groups of LN590 hydrolyze to form reactive silanol groups which can bond to a variety of inorganic substrates. The organophilic mercapto end of LN-590 can react with a suitable polymer. Hydrolysis of LN-590 is catalyzed by acids.
Examples of suitable inorganic substrates are glass, glass fibers, quartz, silicia, sand, cristobalite, mica kaolin, talc, other siliate fillers and metals.
Application and performance
LN-590 is used in applications such as:
² Glass composites: as a finish or a size ingredient.
² Glass and metal primer.
² Sealants and adhesives: as a primer, additive, or for chemical modification of the polymer.
² Mineral filled polymers: for pretreat- ment of fillers and pigments or as an additive.
Important product effects that can be achieved through the use of KH-590 include:
² Compression set.
² Improved mechanical properties, e.g. flexural strength, tensile strength, impact strength and modulus of elasticity, tear strength.
² Improved moisture and corrosion resistance.
² Improved electrical properties, such as dielectric constant, volume resistivity.
² Increased thermal resistivity.
LT-590 can also improve such processing properties as:
² Cure time
² Filler dispersion
² Rheological behavior: (e.g. viscosity reduction)
² Higher filler loading
Product safety, handling and storage
Customers considering the use of this product should review the latest Material Safety Data Sheet and label for product safety information, handling instructions, personal protective equipment if necessary, and any special storage condition required. The “Best use before end” date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.
Packaging
Information on available container sizes is obtainable