Hydrophobic Dynasylan® diaminofunctional silane is used in adhesives and sealants, and in coatings, to improve the adhesion of amino-reactive resins. Dynasylan® diaminofunctional silane used in coatings, adhesives, & sealants to improve the adhesion of amino-reactive resins. – The Cary Company!. Hydrophobic Dynasylan® diaminofunctional silane is used in adhesives and sealants, and in coatings, to improve the adhesion of amino-reactive resin.
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The functionalizing residue comprises as functionalization one or more residues, e. It can be advantageous to use a mixture of different fillers. Monomeric dynasulan cross-linkers are in general silane compounds containing two or more, e. The functionalized oligodimethylsiloxane comprises at least one terminal or side functionalizing residue. Exemplary ketoxime residues are dialkylketoxime residues whose alkyl residues have 1 to 6 C atoms.
Dynasylan® – Hydrophobic Diaminofunctional Silane (55 lb. Pail)
EP-A describes the use of a condensation product of functional oligosiloxanes as primers for the adhesion buildup for example of polyurethane-based adhesive substances and sealing substances on substrates. R 1 is independently of each other a functionalizing residue selected from a residue with the formula 1 R F -alkyl- the formula 2 R F -alkyl-Si R S 2 —O—, the formula 3 aminoalkylaminoalkyl, or the formula 4 aminoalkylaminoalkylaminoalkyl, wherein in the formulas 1 to 4R F is selected from mercapto, glycidoxy, amino, amido, methacrylato, carbamato, isocyanato or polyalkylene glycol; and R S is independently of each other C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy.
Organopolysilozane compositions crosslinkable with elimination of alcohols to give elastomer. There is no solution for this problem in the related art. The functionalizing residue can also contain two or more functionalizing residues, e. Curable silicone compositions containing reactive non-siloxane-containing resins. The mixture was applied with a layer thickness of ca.
The one- or two-component silicone formulation according to claim 1wherein the functionalized oligodimethylsiloxane is contained in an amount of 0. The addition of such additives is a familiar practice for such silicone formulations. The functionalized oligodimethylsiloxane can be dynaasylan in an amount of 0. Examples for the functionalizing residues are mercapto, glycidoxy, amino e. The functionalizing residue can be a non-hydrolysable residue.
In a two-component system, the additives can be added to cynasylan or to both components.
The advantage of such oligomeric compounds is, among other things, a distinct reduction of the low-molecular cleavage products that become free during the hardening reaction and therefore of the VOC emissions. The degree of condensation of the oligomeric siloxane, that is, the number of the monomeric silane cross-linkers condensed with each other, can vary in wide ranges according to the intended use but can be, e.
Dynasylann one-or two-component silicone formulations in accordance with the disclosure, for example, dynasyylan the form of an RTV silicone, are suitable as elastic adhesives or sealants.
Suitable terminal functional residues are those used in the art. For example, the polydiorganosiloxanes comprise two or more functional residues by which a cross-linking is possible. EP-A relates to the production of poly 3-aminopropylorganosiloxanes and refers to the possible use in coatings and adhesives.
The one-or two-component silicone dynassylan furthermore comprises one or more oligomeric siloxanes as cross-linkers for the polyorganosiloxane, wherein the oligomeric siloxane is a condensation product of monomeric silane cross-linkers.
The residues R 4 can stand for phenyl- vinyl or for methyl residues.
The scope of the invention is indicated by the appended claims rather than the foregoing description and all changes that come within the meaning and range and equivalence thereof are intended to be embraced therein. For example, all additives are basically suitable for the polymer component as well as for the silicone component comprising the at least one oligomeric siloxane and the at least one functionalized oligodimethylsiloxane, that can be added as hardener component.
A suitable area of application is, e. Examples for such functional residues of polydiorganosiloxane which are, for example, terminal dynxsylan residues are hydrido- hydroxy- vinyl- alkoxy- acetoxy- and ketoxime residues, wherein hydroxy residues are exemplary. In the previous examples for R 2 and R 3 alkyl or alkoxy can be, e.
DYNASYLAN® by Evonik Resource Efficiency GmbH, BL Silanes – Adhesives & Sealants
The functional residues can be present at any position of the silane cross-linker and can be bound to an Si atom of the monomeric silane cross-linker. You may choose a language below to continue to this industry or close this dialog above.
Trimethylsilyl-terminated polydimethylsiloxanes can also be used in which a few of the methyl residues are replaced by other organic residues such as, for example, phenyl- vinyl- or trifluoropropyl residues. In a one-component silicone formulation, the one component contains the polydiorganosiloxane, the oligomeric siloxane and the functionalized oligodimethylsiloxane. The silicone formulation can 1146 comprise one or more fillers with which, e. Regarding the functionalizing residue, in general, in contrast to the above-cited functional residues, no cross-linking with the functional residues of polydiorganosiloxane is possible, at least under the conditions under which the silicone formulation is cured.