GENIOSIL® GF 98
GENIOSIL® GF 98 is an alkoxysilane with an amino-functional group. It´s a clear, colorless to light yellowish liquid with a characteristically aromatic odor. The compound reacts with moisture under hydrolysis of the alkoxy groups and forms silanols, which reacts further forming siloxanes. As a bifunctional amine, GENIOSIL® GF 98 can also interact with numerous organic polymers and thus function as a molecular bridge between organic and inorganic substrates.
All the information provided is in accordance with the present state of our knowledge. Nonetheless, we disclaim any warranty or liability whatsoever and reserve the right, at any time, to effect technical alterations. The information provided, as well as the product's fitness for an intended application, should be checked by the buyer in preliminary trials. Contractual terms and conditions always take precedence. This disclaimer of warranty and liability also applies particularly in foreign countries with respect to third parties' rights.
1. General processing information
GENIOSIL® GF 98 is very readily soluble in alcohols, esters and ketones. It is only slightly soluble in n-hexane. It may react slowly with ketones and aldehydes to form imines. With other alcohols excepting methanol, an autocatalytic exchange reaction forms mixed alkoxysilane bonds. In neutral water GENIOSIL® GF 98 reacts under hydrolysis and condensation of the silanol groups. The water has an approximate pH of 9 - 10.
In silane crosslinking formulations GENIOSIL® GF 98 may be added to the formulation as an adhesion promoter. Processing is effected by means of standard mixing methods. Usually, about 1 - 2 wt % silane is added to the formulation.
Fillers are treated either with pure GENIOSIL® GF 98 or a solution thereof. It may be necessary to pretreat the substrate with water.
In an alternative procedure referred to as "blending", GENIOSIL® GF 98 is added directly to the polymer - either before the organic materials is compounded with the filler or at the same time.
However, this is only possible if the polymer is compatible with GENIOSIL® GF 98.
Important applications of GENIOSIL® GF 98 is the use as an adhesion promoter in sealants, adhesives and coatings, and as a coupling agent for inorganic particles, pigments or fillers.