Dynasylan® SILBOND® 40

Identification & Functionality

Chemical Family

Silicates

Chemical Name

Ethyl Silicate,

Tetraethyl orthosilicate

CASE Ingredients Functions

Adhesion Promoter,

Binder & Resin,

Coupling Agent,

Surface Modifier

Plastics & Elastomers Functions

Crosslinking Agent

Technologies

CASE Ingredients,

Elastomers,

Industrial Additives & Materials

Product Families

CASE Ingredients — Additives

Functional Additives,

Surface Modifiers

Elastomers — Elastomer Additives

Catalysts, Initiators & Crosslinkers

Industrial Additives & Materials — Processing Aids

Other Processing Additives

CASE Ingredients — Resins & Binders

Other Resins & Binders

Features & Benefits

Labeling Claims

Low VOC

CASE Ingredients Features

Abrasion Resistance,

Chemical Resistance,

Excellent Scratch Resistance,

Low Viscosity

Materials Features

Chemical Resistant,

Good Mechanical Properties,

Good Thermal Stability,

Low Viscosity

Applications & Uses

Markets

Adhesives & Sealants,

Building & Construction,

Electrical & Electronics,

Paints & Coatings

Applications

Adhesives & Sealants — Building & Construction

Sealants & Caulks

Building & Construction — Building Materials

Pipes & Plumbing

Paints & Coatings — Industrial Coatings

Industrial Coatings

Electrical & Electronics — Wire & Cable

Jacketing & Insulation

Applicable Processes

Investment Casting

Compatible Polymers & Resins

Silicones

Plastics & Elastomers End Uses

Cables,

Pipes

Application Characteristics

• Similar to Dynasylan® SILBOND® Condensed, Dynasylan® SILBOND® 40 is used to deposit silicic acid formed as a result of complete hydrolysis.
• The resulting silicic acid bonds well to many inorganic substrates, such as glass, ceramic, metal, fillers, pigments, and synthetic fibers.
• The deposition of a thin SiO2 layer improves the chemical and thermal stability and mechanical properties.
• Other applications are:
  • binder, especially as Dynasylan® SILBOND® H- or HT- binders for inorganic zinc-rich coatings or precision investment castings
  • encapsulant for hydroxyl poor fillers to enhance adhesion with functional silanes
  • crosslinker component in cold-curing silicone rubber systems
  • hardening component in dentistry for impression materials and as a binder for embedding material
• Dynasylan® SILBOND® 40 is also used as starting material for sol-gel processes.
• It is usually used in conjunction with alkylsilanes (e.g. Dynasylan® MTES) organofunctional silanes and/or organic precursors (e.g. organic resins) to form siloxane networks.
• This makes it possible to obtain highly scratch-, abrasion-, and chemical-resistant coatings.
• Dynasylan® SILBOND® 40 is immiscible with water, therefore hydrolysis requires a cosolvent as a solubilizer.
• Mineral acids and ammonia are suitable as catalysts.
• Dynasylan® SILBOND® 40 or its hydrolysates are also the binder component for 1- and 2-pack inorganic zinc-rich coatings, for corrosion protection on steel, and for slurries used in precision investment castings.

Properties

Physical Form

Liquid

Appearance

Clear low - viscous liquid

Technical Data

	Value	Units	Test Method / Conditions
Density (at 20°C)	1.055 - 1.065	g/cm³	—
Boiling Point	160.0	°C	—
Viscosity (at 20°C)	5.0	mPa.s	—
Flash Point	34.0	°C	—
Silica Content (as SiO₂)	min.40.0	Mass %	QC07106P

Packaging & Availability

Packaging Type

Bulk,

Drums,

Pails,

Totes (IBC)

Packaging Information

Dynasylan® SILBOND® 40 product could be available in pails, drums, totes and tanker quantities.

Storage & Handling

Shelf Life

12 months