Back to results
US 2020/0048406 A1Published application
Silane Coupling Agents
AssigneeHenkel AG & Co. KGaA
InventorsRok Brisar, Udo Kragl, Jan-Erik Damke, Johann Klein, Esteban Mejia
Life of this patent
Estimating the term…
Abstract
The present invention discloses silylated polyurethanes obtainable by reacting at least one polyols, at least one polyisocyanates, at least one amide-functionalized silanes of the general formula (I) as described herein and their preparation methods, curable compositions comprising the silylated polyurethanes and their use as adhesive, sealant, spray foam and/or coating.
Claims14
A silylated polyurethane that is the reaction product of a mixture comprising:
- a) at least one polyol having a number average molecular weight of from 1000 to 50,000 g/mol;
- b) at least one polyisocyanate, diisocyanate;
- and
- c) at least one amide-functionalized silane of the general formula (I)
- wherein
- R1 is hydrogen;
- R2 and R3 are same or different and are, independently from one another, selected from the group consisting of hydrogen and substituted or unsubstituted hydrocarbon residues, alkyl or aryl residues, more alkyl residues, having 1 to 20 carbon atoms, 1 to 8 carbon atoms, most methyl, ethyl, or n-propyl residue;
- R4 is selected from linear or branched, substituted or unsubstituted hydrocarbon residues, alkyl residues, having 1 to 20 carbon atoms, 1 to 8 carbon atoms, more ethyl, n-propyl or n-butyl residue;
- R6 is selected from the group consisting of hydrogen and linear or branched, substituted or unsubstituted hydrocarbon residues, alkyl or aryl residues, having 1 to 20 carbon atoms, 1 to 8 carbon atoms, more methyl, ethyl or n-propyl residue;
- and
- n is 0, 1, 2 or 3, 3.
8 more elements
A method for preparing a silylated polyurethane comprising reacting a mixture including:
- a) at least one polyol having a number average molecular weight of from 1000 to 50,000 g/mol;
- b) at least one polyisocyanate, diisocyanate;
- and
- c) at least one amide-functionalized silane of the general formula (I)
- wherein
- R1 is hydrogen;
- R2 and R3 are same or different and are, independently from one another, selected from the group consisting of hydrogen and substituted or unsubstituted hydrocarbon residues, alkyl or aryl residues, more alkyl residues, having 1 to 20 carbon atoms, 1 to 8 carbon atoms, most methyl, ethyl, or n-propyl residue;
- R4 is selected from linear or branched, substituted or unsubstituted hydrocarbon residues, alkyl residues, having 1 to 20 carbon atoms, 1 to 8 carbon atoms, more ethyl, n-propyl or n-butyl residue;
- R6 is selected from the group consisting of hydrogen and linear or branched, substituted or unsubstituted hydrocarbon residues, alkyl or aryl residues, having 1 to 20 carbon atoms, 1 to 8 carbon atoms, more methyl, ethyl or n-propyl residue;
- and
- n is 0, 1, 2 or 3, 3.
8 more elements
Dependencies are inferred from the claim text.