Triazine derivative
AssigneeSolvay Specialty Polymers Italy S.P.A.
InventorsRoberto Valsecchi, Fabrizio Mutta, Claudio Adolfo Pietro Tonelli
Life of this patent
Estimating the term…
Abstract
The invention pertains to certain (per)fluoropolyether triazine derivatives comprising at least one triazine group and at least one fluoropolyoxyalkene chain (chain Rf) comprising a fluorocarbon segment having ether linkages in main chain, said chain Rf comprising at least one hydroxyl group, to a method for their manufacture and to their use in lubrication, in particular for lubricating sliding or moving parts of magnetic recording media.
Claims18
A triazine derivative of formula (T-1) or formula (T-2):
- wherein:
- each of Y, Y′, Y″, Y°, Y°′, Y°″, Y°′″, Y°″″ equal to or different from each other, is independently a hydrocarbon group, optionally fluorinated, wherein at least one of Y, Y′, Y″ in formula (T-1) and at least one of Y°, Y°′, Y°″, Y°′″, Y°″″ in formula (T-2) is selected from the group consisting of:
- groups of formula —CF2CH2O(CH2CH2O)s′H and —CF2CF2CH2O(CH2CH2O)s″H, wherein s′ and s″, equal to or different from each other and at each occurrence, are integers from 0 to 5;
- and
- groups of formula —CF2CH2O(CH2CH2O)w′J′(OH)e′ and —F2CF2CH2O(CH2CH2O)w″J″(OH)e″, wherein w′ and w″, equal to or different from each other and at each occurrence, are integers from 0 to 5, J′ and J″ are C1-C12 hydrocarbon bridging group, optionally comprising ethereal bonds;
- and e′ and e″ are integers from 2 to 4;
- each of RF, R′F, R″F, R°F, R°′F, R°″F, R°′″F , R°″″F, R°*F, R°**F, equal to or different from each other, is independently a divalent fluoropolyoxyalkene chain (Rf) comprising repeating units R°, said repeating units selected from the group consisting of:
- (i) —CFXO—, wherein X is F or CF3,
- (ii) —CFXCFXO—, wherein X, equal to or different at each occurrence, is F or CF3, wherein at least one of X is —F,
- (iii) —CF2CF2CW2O—, wherein each of W, equal to or different from each other, are selected from F, Cl, and H,
- (iv) —CF2CF2CF2CF2O—, and
- (v) —(CF2)j—CFZ—O—wherein j is an integer from 0 to 3 and Z is a group of general formula —ORf′T3, wherein Rf′ is a fluoropolyoxyalkene chain comprising between 0 and 10 repeating units each independently selected from the group consisting of —CFXO—, —CF2CFXO—, —CF2CF2CF2O—, and —CF2CF2CF2CF2O—, with each of X being independently F or CF3, and wherein T3 is a C1—C3 perfluoroalkyl group;
- each of E, E′, E″, E°, E°′, E°″, E°′″, E°″″, E°*, E°**, E°***, E°****, equal to or different from each other, is independently a bond or a C1-C20 divalent bridging group, optionally comprising heteroatoms, optionally fluorinated, optionally further comprising one or more than one hydroxyl group;
- and
- n in formula (T-2) is zero or an integer from 1 to 5.
A lubricant composition comprising a triazine derivative and at least one lubricant, wherein the triazine derivative comprises at least one triazine group and at least one fluoropolyoxyalkene chain (chain Rf) comprising a fluorocarbon segment having ether linkages in the main chain, wherein chain Rf comprises at least one hydroxyl group.
A method for lubricating a magnetic recording medium comprising coating on at least one of its surface a composition comprising a triazine derivative, wherein the triazine derivative comprises at least one triazine group and at least one fluoropolyoxyalkene chain (chain Rf) comprising a fluorocarbon segment having ether linkages in the main chain, wherein chain Rf comprises at least one hydroxyl group.
Dependencies are inferred from the claim text.