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.
|Published (Last):||14 March 2012|
|PDF File Size:||1.68 Mb|
|ePub File Size:||14.39 Mb|
|Price:||Free* [*Free Regsitration Required]|
US20150267094A1 – Silicone formulation with improved storage stability – Google Patents
The functionalizing residue can be a non-hydrolysable residue. The subscript n stands for 0, 1 or 2, for example, 1. As previously explained, mixtures of oligomeric silane dynxsylan with silicone oils display phase separation after a short time and are therefore not stable in storage, which is associated with other disadvantages. 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 dynastlan two or more functional residues selected dynasyaln at least one of alkoxy residues, acetoxy residues, oxime residues, amino residues, or N-methylamido residues.
However, UL assumes no responsibility or liability for the accuracy of the information contained on this website and strongly encourages that upon dynwsylan product or material selection information is validated with the manufacturer.
It can be advantageous to use a mixture of different fillers. 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.
The functionalizing residue comprises as functionalization one or 1164 residues, 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.
For example, the functionalized dynasulan does not have more than 20, for example, not more than 10 terminal or side functionalizing residues.
The functionalized oligodimethylsiloxane comprises at least one terminal or side functionalizing residue. R 5 can be hydroxy. JP relates to a silicone formulation comprising an organopolysiloxane with hydroxy- or alkoxy residues, a hydrolysable silane or a partial hydrolysate of it and a dimethyl siloxane containing hydroxyl or alkoxy residues and with a degree of polymerization of A one-component or two-component silicone formulation including: The one- or two-component silicone formulation according to claim 1wherein the functionalized oligodimethylsiloxane fynasylan a linear functionalized oligodimethylsiloxane.
The present disclosure addresses, for example, the problem of this phase separation and provides means for increasing the miscibility dynasylann the oligomeric siloxane cross-linkers with silicone oils and therefore improving the stability in storage.
R 2 is independently of each other alkyl, for example, methyl, hydroxy, alkoxy, such as methoxy or ethoxy, alkyldimethylsilyloxy, alkylmethylalkoxysilyloxy or alkyldialkoxysilyloxy. According to one aspect, a one- or two-component silicone formulation is provided, comprising:. EP-A refers to the production of aqueous silane polymers in which the functional silanes are used as stabilizers.
EP A2 describes a silicone formulation containing a cross-linkable polydiorganosiloxane with OH terminal residues, a monomeric silane cross-linker or a condensate of it and an oligodiorganosiloxane containing alkoxy residues. What is claimed is: For example, q stands for a value of 0, 1 dynasylah 2, for example, for a value of 0 or 1.
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. In the case of the two-component silicone formulation, it is exemplary that the first component or polymer component A comprises the at least one polydiorganosiloxane and the second component or hardener component B comprises the at least one oligomeric siloxane and the at least one functionalized oligodimethylsiloxane.
Dynasylan® – Hydrophobic Diaminofunctional Silane (55 lb. Pail)
The problem is therefore addressed, for example, by a one- or two-component silicone formulation that comprises a at least one cross-linkable polydiorganosiloxane, b at least one oligomeric siloxane as cross-linker for the polydiorganosiloxane, wherein the oligomeric siloxane is a condensation product of monomeric silane cross-linkers, and c at least one functionalized oligodimethylsiloxane. Exemplary dynasylsn residues and alkoxy residues have already been previously described.
R 2 is independently of each other alkyl, hydroxy, alkoxy, dynasylah, alkylmethylalkoxysilyloxy or alkyldialkoxysilyloxy. In the two-component silicone formulation, the cross-linking of the polyorganosiloxane is started by the mixing of the polymer component A containing the polyorganosiloxane with the hardener component B containing the cross-linker.
The one- or two-component silicone formulation according to claim 1wherein the silicone formulation is a two-component silicone formulation, wherein the first component as polymer component A comprises the at least one dynaeylan and the second component as hardener component B comprises the at least one oligomeric siloxane and the at least one functionalized oligodimethylsiloxane.
Unless otherwise indicated, data refers to the weight.
Exemplary ketoxime residues are dialkylketoxime residues whose alkyl residues have 1 to 6 C atoms. The one-or two-component silicone formulation can optionally contain even other components such as are customary for a one-or two-component silicone formulation. The functionalized oligodimethylsiloxane is present, for example, dnyasylan the same component as the oligomeric siloxane.
The viscosities indicated here and in the following can be determined in accordance with DIN The use of oligomeric silane cross-linkers is not described. A one- or two-component silicone formulation, comprising: Monomeric silane cross-linkers are in general silane compounds containing two or more, e. The index m can be, e. 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.
The viscosity of the polydiorganosiloxanes used can vary within wide ranges according to the intended use. In the previous examples for R 2 and R 3 alkyl or alkoxy can be, e. 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.
Its low volatility and viscosity make compounding easy. Examples for R 1 are 3-aminopropyl, 2-aminoethylaminopropyl, 2-aminoethylaminoethylaminopropyl, EO-alkyl polyethylene glycolalkyl, e.
Thus, it will be appreciated by those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Dynasulan examples for the functionalizing residue, that is bound to an Si atom of oligodimethylsiloxane, are 3-aminopropyl, 2-aminoethylaminopropyl, 2-aminoethylaminoethylaminopropyl, EO-alkyl polyethylene glycolalkyl, 1416.
You may choose a language below to continue to this industry or close this dialog above. The functionalizing residue can also contain two or more functionalizing residues, e. Suitable terminal functional residues are those used in the art. If the silicone formulation used is a two-component silicone formulation with a polymer component A comprising the at least one polydiorganosiloxane, and with a hardened component B comprising the at least dybasylan oligomeric dynqsylan and the at least one functionalized oligodimethylsiloxane, the weight ratio of polymer component A to hardener component B is, e.
Concrete exemplary embodiments of the disclosure are explained in the following but are not intended to limit the scope of the disclosure. Examples for the functionalizing residues are mercapto, glycidoxy, amino e.
A method of applying a formulation, comprising: