DYNASYLAN 1146 PDF
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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Thus, it will be appreciated by those skilled in the art that the present invention 146 be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
1416 8 is a bivalent alkylene residue, e. Exemplary ketoxime residues and alkoxy residues have already been previously described. The degree of condensation dynasypan degree of polymerization of the functionalized oligodimethylsiloxane can vary in wide ranges according to the intended use but can be, e. In the above two general formulas R 1 is independently of each other a functionalizing residue such as described above, for example, a residue with the formula 1 R F -alkyl- the formula dhnasylan R F -alkyl-Si R S 2 —O—, the formula 3 aminoalkylaminoalkyl or the formula 4 aminoalkylaminoalkylaminoalkyl, wherein in the formulas 1 to 4 R F is selected from mercapto, glycidoxy, amino e.
R 2 is independently of each other alkyl, hydroxy, alkoxy, alkyldimethylsilyloxy, alkylmethylalkoxysilyloxy or alkyldialkoxysilyloxy. The one-or two-component silicone formulation 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.
For example, the functionalized oligodimethylsiloxane does not have more than 20, for example, not more than 10 terminal or side functionalizing residues. These problems can be mitigated or avoided according to the disclosure if molecules are added whose chemical structure is between those of the cited oligomeric siloxanes and those of the polydiorganosiloxanes, for example, of the polydimethylsiloxanes. Exemplary fillers are calcium carbonates, calcined caolines, carbon black, highly dispersed silicic acids and flame-retardant fillers such as hydroxides or hydrates, for example, hydroxides or hydrates of aluminum, for example, aluminum trihydroxide.
The polydiorganosiloxanes are cross-linkable polydiorganosiloxanes. 11146 already explained, the structure of the oligomers formed can be complicated.
The one- or two-component silicone formulation according to claim 1wherein the functionalized oligodimethylsiloxane is contained in an amount of 0. R 2 is independently of each other alkyl, for example, methyl, hydroxy, alkoxy, such as methoxy or ethoxy, alkyldimethylsilyloxy, alkylmethylalkoxysilyloxy or alkyldialkoxysilyloxy. The index p stands for a value of 0, 1 or 2. 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, dynaslan, amido, methacrylato, carbamato, isocyanato or polyalkylene glycol; and R S is independently of each other Dymasylan 1 -C 4 -alkyl or C 1 -C 4 -alkoxy.
The drawing-off speed is selected in such a manner that a cut is made about every dynasylzn seconds.
DYNASYLAN® by Evonik Resource Efficiency GmbH, BL Silanes – Adhesives & Sealants
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.
According to another aspect, a silicone component is provided, comprising:. Monomeric silane cross-linkers are in general silane compounds containing two or more, e. The bridge residue can also be, e. 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.
This is accompanied by changed qualities of the formulated RTV silicones such as reduced reactivity and reduced adhesion. However, UL assumes no responsibility or liability for the accuracy of the information contained on this website and strongly encourages that upon final product or material selection information is validated with the manufacturer.
The disclosure relates to one- or two-component silicone formulations, for example, RTV silicones and their usage and to a corresponding silicone component.
Examples for such functional residues of polydiorganosiloxane which are, for example, terminal functional residues are hydrido- hydroxy- vinyl- alkoxy- acetoxy- and ketoxime residues, wherein hydroxy residues are exemplary.
There is no solution for this problem in the related art. The silicone formulation, for example, the one-component silicone formulation contains, e. Oligomers of functional silanes are complicatedly constructed 3-dimensional compounds.
The functionalizing residue can be, e. The one- or two-component silicone formulation comprises one or more polydiorganosiloxanes. The index m can be selected in such a manner that the polydiorganosiloxane has the viscosity indicated in the following. The amount of the oligomeric siloxane as cross-linker can vary within wide ranges. The percentage data refers to the amount of the cohesion break. Examples for R 6 are alkyl residues with 1 to 5 C atoms, for example, methyl, ethyl or propyl, vinyl, aryl residues, such as phenyl, cycloalkyl residues, such as cyclohexyl, as well as substituted alkyl residues, with 1 to 8 C atoms, for example, methyl, ethyl or propyl, that are functionalized with one or more substituents such as optionally substituted amino NH 2NHR, NR 2wherein R is independently of one another alkyl, aryl or cycloalkylmercapto, glycidoxy, methacrylate, acrylate or carbamato.
The viscosities indicated here and in the following can be determined in accordance with DIN The one- or two-component silicone formulation according to claim 1wherein the oligomeric siloxane is a condensation product of one or more monomeric silane cross-linkers and the monomeric silane cross-linker is a silane compound with three or more functional residues selected from at least one of alkoxy residues, acetoxy residues, oxime residues, amino residues, or N-methylamido residues.
Exemplary polydiorganosiloxanes are polydimethylsiloxanes with functional terminal residues such as hydrido, hydroxy- alkoxy- acetoxy- and ketoxime residues, wherein hydroxy residues are exemplary. Mixtures of these oligomers with silicone oils display phase separation after a short time and are therefore not stable in storage. Concrete examples from monomeric silane cross-linkers are methyltrimethoxysilane, vinyltrimethoxysilane, phenyltrimethoxysilane, propyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 2-aminoethylaminopropyltrimethoxysilane, 1,2-bis- trimethoxysilyl ethane, bis- trimethoxysilylpropyl amine, N- n-butyl aminopropyltrimethoxysilane, N-cyclohexylaminomethyltrimethoxysilane, methacryloxymethyltrimethoxysilane, O-methylcarbamatomethyltrimethoxysilane or the corresponding compounds in which the methoxy residue is replaced by ethoxy, propoxy, oxime or ketoxime.
Suitable catalysts are commercially obtainable.
US20150267094A1 – Silicone formulation with improved storage stability – Google Patents
The one- or two-component silicone formulation according to claim 1wherein the silicone formulation is a two-component silicone formulation, dynasylah the dynasyoan component as polymer component A comprises the at least one polydiorganosiloxane and the second component as hardener component B comprises the at least one oligomeric siloxane and the at least one functionalized oligodimethylsiloxane.
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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.