The dual nature of its reactivity allows Dynasylan® 1161 EQ to bind chemically to both inorganic materials (e.g. glass, metals, fillers) and organic polymers (e.g. thermosets, thermoplastics, elastomers), thus functioning as an adhesion promoter and as a surface modifier. Dynasylan® 1161 EQ is a yellow liquid as an approx. 50% solution in methanol. It is soluble in alcohols, ketones, esters and aromatic hydrocarbons. Dynasylan® 1161 EQ contains no carcinogenic benzylchloride.
Dynasylan® 1161 EQ is a bifunctional organosilane: In the presence of water, the methoxy groups of Dynasylan® 1161 EQ hydrolyze to form reactive silanol groups which can bond to a variety of inorganic substrates. The organophilic cationic amino group of Dynasylan® 1161 EQ can react with a suitable polymer.
The cationic structure provides for antistatic properties and, in many applications, particularly good wetting of the resin. Dynasylan® 1161 EQ can also be used in combination with other silanes.
Hydrolysis of Dynasylan® 1161 EQ is preferably carried out in the presence of acetic acid (pH 3-4).
Examples of suitable inorganic substrates are glass, glass fibers, glass wool, mineral wool, silica, quartz, sand, cristobalite, wollastonite, and mica as well as aluminum hydroxide, kaolin, talc, other siliceous fillers, metal oxides and metals.
Dynasylan® 1161 EQ may be used with such polymers as epoxy, unsaturated polyester resins, polyurethanes, PA, PBT, PC, EVA, modified PP, PVB, PVAC and acrylics.
Typical Applications
- as a size constituent or finish for glass fiber/glass fabric composites
- as a primer for glass and metal
- as a primer or additive for sealants and adhesives
- for the pretreatment of fillers and pigments for mineral-filled composites
- as a primer and/or additive for paints and varnishes to improve adhesion to the substrate
Benefits at a glance
- improved mechanical properties: e.g. flexural strength, tensile strength, impact toughness, modulus of elasticity
- improved electrical properties: e.g. dielectric constant, specific volume resistance
Dynasylan® 1161 EQ may also be used to improve processing properties such as
- improved adhesion
- better polymer wetting.
A temperature stability at the inorganic/organic interphase of up to 300°C may be realised.
Product Details
Technical Data Sheets
Further Information
Storage:
From technical point of view a storage between 4°C and 40°C is beneficial.
The material is stable as long as not exposed to air or moisture.