Aqueous binder useful for mineral wool, comprises binder base comprising e.g. binder based on sugar derivative or molasses, antioxidant having e.g. sterically hindered phenol compounds, and UV stabilizer having e.g. carboxylic acid amides

摘要

Aqueous binder comprises a binder base comprising phenol-formaldehyde resin binders, urea-modified phenol-formaldehyde resin binders, a binder based on polymeric carboxylic acids and epoxy resins, which are free of formaldehyde, or binders based on sugar derivatives and/or sugar molasses; at least one antioxidant which comprises e.g. sterically hindered phenol compounds (I); and at least one UV stabilizer which comprises e.g. carboxylic acid amides of carboxylic acids with alkylene having 2-16 carbon atoms. The antioxidant and the UV stabilizer are present in a mass ratio of 1.5:1-10:1. Aqueous binder comprises a binder base comprising phenol-formaldehyde resin binders, urea-modified phenol-formaldehyde resin binders, a binder based on polymeric carboxylic acids and epoxy resins, which are free of formaldehyde, or binders based on sugar derivatives and/or sugar molasses; at least one antioxidant which comprises sterically hindered phenol compounds of formula (I), pentaerythrityl tetrakis-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-s-triazine-2,4,6-(1H,3H,5H)-trione and/or alkyl-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)]propionate in which alkyl is branched and exhibits 7-9 carbon atoms; and at least one UV stabilizer which comprises carboxylic acid amides of carboxylic acids with alkylene having 2-16 carbon atoms or (hetero)cycloalkylene having 5-16 carbon atoms, nitrogen-aryl-substituted carboxylic acid amides with ring having 5-6 carbon atoms, nitrogen-alkyl-substituted carboxylic acid amides having 1-16 carbon atoms, nitrogen-cycloalkyl-substituted carboxylic acid amides with ring having 5-16 carbon atoms, intermediate radicals of hindered amine light stabilizers- or sterically hindered amino ethers (NOR-HALS) type, preferably intermediate radicals of triacetone-amine or triazine with sterically space-occupying substituents having aryl with 5-6 carbon atoms, cycloalkyl with 5-16 carbon atoms or tert-butyl, diaryl ketones having 5-6 carbon atoms and/or diaryl ketones of condensed aryl compounds having 2-3 rings, or 2-(2H-benzotriazol-2-yl) -4-methyl-5-dodecyl phenol, 2-(2H-benzotriazol-2-yl)-4-methyl-6-dodecyl phenol, isomers of 2-(2H-benzotriazol-2-yl)-4-methyl-5-tetracosyl-phenol, isomers of 2-(2H-benzotriazol-2-yl)-4-methyl-6-tetracosyl-phenol, isomers of 2-(2H-benzotriazol-2-yl)-4-methyl-5-didodecyl-phenol, isomers of 2-(2H-benzotriazol-2-yl)-4-methyl-6-didodecyl-phenol, 2,2,4,4-tetramethyl-2-oxa-3,20-diazadispiro(5.1.11.2)-heneicosane-21-one and/or 2-hydroxy-4-n-octoxy-benzophenone. The antioxidant and the UV stabilizer are present in a mass ratio of 1.5:1-10:1. Either R1 : substituent which is sterically hindering to OH, having at least one tertiary carbon in 4-19C alkyl or 5-8C cycloalkyl, where tertiary carbon or 5-8C cycloalkyl are directly bonded to benzene or through 1-2C chain; and R2 : substituent which is not sterically hindering to OH, preferably H or optionally branched 1-16C alkyl, where, when a branching point in branched 1-16C alkyl is tertiary carbon, then 1-16C alkyl is bonded to benzene at least through 3C chain; or R1 : substituent which is not sterically hindering to OH, preferably H or optionally branched 1-16C alkyl, where, when a branching point in branched 1-16C alkyl is tertiary carbon, then 1-16C alkyl is bonded to benzene at least through 3C chain; and R2 : substituent which is sterically hindering to OH, having at least one tertiary carbon in 4-19C alkyl or 5-8C cycloalkyl, where tertiary carbon or 5-8C cycloalkyl are directly bonded to benzene or through 1-2C chain; or R1, R2 : substituent which is sterically hindering to OH, having at least one tertiary carbon in 4-19C alkyl or 5-8C cycloalkyl, where tertiary carbon or 5-8C cycloalkyl are directly bonded to benzene or through 1-2C chain; and R3 : 1-80C alkyl or 1-80C cycloalkyl (both linear) or branched 3-80C alkyl (all optionally substituted by OH, CN, Cl, Br, I, 1-6C carbonyl, 2-6C ester, 2-6C ether, NH 2 or SH), substituent which is not sterically hindering to OH, substituent which is sterically hindering to OH, halo except F, 5-6C aryl, N, O, P, S, 5-6C heteroaryl or 3-8C heterocycloalkyl having N, O, P or S. An independent claim is also included for a mineral wool product which is bonded with the above binder. [Image].