Abstract: The present invention relates to novel (per)fluoropolyether polymers characterized by high molecular weight and high functionality, to a process for their manufacture and to their use as intermediate compounds in the preparation of further polymers.

Abstract: The present invention relates to novel (per)fluoropolyether polymers characterized by high molecular weight and high functionality, to a process for their manufacture and to their use as intermediate compounds in the preparation of further polymers.

Abstract: The present invention relates to novel (per)fluoropolyether (PFPE) polymer derivatives, a method for their manufacture and their use as intermediates for the synthesis of a variety of functional derivatives, including notably silane-group containing derivatives.

Abstract: Compounds [compounds (L)] comprising at least one monocyclic, polycyclic or polycondensed aromatic moiety [moiety (A*)], wherein: at least one carbon atom of moiety (A*) is substituted with a fluoropolyoxyalkene chain [chain (Rf)], said chain (Rf) comprising: a) a fluorocarbon segment having ether linkages in the main chain and b) at least one hydroxyl group and wherein: at least one other carbon atom of moiety (A*) is substituted with an electron-withdrawing group and mixtures thereof are herein disclosed. Disclosed are also a process for manufacturing compounds (L), a method for lubricating MRM comprising using compounds (L), a lubricant composition comprising one or more compounds (L) and a method for manufacturing a composition (C).

Abstract: The present invention relates to novel (per)fluoropolyether polymers and their use as lubricants, in particular for Magnetic Recording Media (MRM).

Abstract: The present invention relates to (per)fluoropolyether (PFPE) amino derivatives, a method for their manufacturing and their uses.

Abstract: The present invention relates to novel (per)fluoropolyether polymers and their use as lubricants, in particular for Magnetic Recording Media (MRM).

Abstract: The present invention relates to (per)fluoropolyether (PFPE) amnino derivatives, a method for their manufacturing and their uses.

Abstract: A method of manufacturing cyclophosphazenes PFPE derivatives to be used in the lubrication of magnetic recording media is herein provided. The method comprises: a) a (per)fluoropolyether (PFPE) polyol [PFPE (Ppol)] comprising a fluoropolyoxyalkylene chain (Rf) having two chain ends, each chain end comprising at least one hydroxy group, and b) the corresponding alkoxide of perfluoropolyether (Ppol) [PFPE (Palk)] wherein the equivalent concentration of PFPE (Palk) in PFPE (Ppol) is lower than 30%, preferably ranging from 5% to 15%; 2) contacting mixture (M) with a perhalocyclophosphazene (CPhalo) to provide a mixture (M1) containing an equivalent ratio of PFPE (Palk)/(CPhalo) of at least 1; 3) allowing mixture (M1) to react until complete disappearance of P—Cl groups to provide a mixture (M2); 4) submitting mixture (M2) to hydrolysis to provide a mixture (M3); 5) optionally removing (Ppol) from mixture (M3) to provide a mixture (M4). A method of purifying mixture (M4) is also herein provided.

Abstract: Compounds [compounds (L)] comprising at least one monocyclic, polycyclic or polycondensed aromatic moiety [moiety (A*)], wherein: at least one carbon atom of moiety (A*) is substituted with a fluoropolyoxyalkene chain [chain (Rf)], said chain (Rf) comprising: a) a fluorocarbon segment having ether linkages in the main chain and b) at least one hydroxyl group and wherein: at least one other carbon atom of moiety (A*) is substituted with an electron-withdrawing group and mixtures thereof are herein disclosed. Disclosed are also a process for manufacturing compounds (L), a method for lubricating MRM comprising using compounds (L), a lubricant composition comprising one or more compounds (L) and a method for manufacturing a composition (C).

Abstract: A method of manufacturing cyclophosphazenes PFPE derivatives to be used in the lubrication of magnetic recording media is herein provided. The method comprises: a) a (per)fluoropolyether (PFPE) polyol [PFPE (Ppol)] comprising a fluoropolyoxyalkylene chain (Rf) having two chain ends, each chain end comprising at least one hydroxy group, and b) the corresponding alkoxide of perfluoropolyether (Ppol) [PFPE (Palk)] wherein the equivalent concentration of PFPE (Palk) in PFPE (Ppol) is lower than 30%, preferably ranging from 5% to 15%; 2) contacting mixture (M) with a perhalocyclophosphazene (CPhalo) to provide a mixture (M1) containing an equivalent ratio of PFPE (Palk)/(CPhalo) of at least 1; 3) allowing mixture (M1) to react until complete disappearance of P—Cl groups to provide a mixture (M2); 4) submitting mixture (M2) to hydrolysis to provide a mixture (M3); 5) optionally removing (Ppol) from mixture (M3) to provide a mixture (M4). A method of purifying mixture (M4) is also herein provided.

Abstract: A process for purifying a polyol(per)fluoropolyether derivative [polyol (P)] from a mixture (M) of hydroxyl(per)fluoropolyether derivatives, such polyol (P) comprising one or more hydroxyl(per)fluoropolyether derivatives [PFPEs (OH)] comprising at least one (per)fluoropolyoxyalkylene chain (chain Rf) and at least one end-group having formula (t3): —CF2CH2OCH2CH(OH)CH2OCH2CH(OH)CH2OH, such mixture (M) comprising said polyol (P) and at least one hydroxyl(per)fluoropolyether derivative [PFPE (OH)] different from polyol (P) and comprising at least one chain Rf and at least one end-group selected from end-groups having formula (t1): —CF2CH2OH and formula (t2): —CF2CH2OCH2CH(OH)CH2OH.

Abstract: A process for the manufacture of a polyol (per)fluoropolyether derivative comprising: 1. reacting at least one triol having two protected hydroxyl functions and a free hydroxyl group with an activating agent, to yield an activated protected triol; 2. reacting the activated protected triol with a functional (per)fluoropolyether derivative of formula: T2-O—Rf-T1, wherein: Rf represents a fluoropolyoxyalkene chain which is a fluorocarbon segment comprising ether linkages in main chain; T1 and T2, equal to or different from each other, are independently selected from non-functional groups of formula: —CF3, —CF2—CF3, —CF2Cl, —CF2CF2Cl, —CF2—COF, —COF: and functional hydroxyl groups comprising at least one hydroxyl group, with the provisio that at least one of T1 and T2 is a functional hydroxyl group as above detailed to yield a protected polyol (per)fluoropolyether derivative; and 3. deprotecting the protected polyol (per)fluoropolyether derivative to yield the polyol (per)fluoropolyether derivative.

Abstract: The invention pertains to an aqueous composition comprising at least one mono-functional (per)fluoropolyether monoester phosphate having formula (I) here below: wherein: Rf is a C1-C5 (per)fluoroalkyl group optionally containing hydrogen and/or chlorine atoms; RF is a linear perfluoropolyoxyalkylene chain [chain (RF)]; X+ is a monovalent cation; Y is a —OH group or a —O? X+ group, wherein X+ has the same meaning as defined above; p is an integer equal to or higher than 1.

Abstract: A process for the purification of a tetraol PFPE derivative [tetraol (T)] of formula (I): HO—CH2—CH(OH)—CH2—O—CH2—CF2—O—Rf—CF2—CH2O—CH2—CH(OH)—CH2OH, wherein Rf represents a fluoropolyoxyalkene chain (chain Rf), from a mixture (M) of hydroxyl (per)fluoropolyether derivatives, said mixture comprising said tetraol (T) and at least one hydroxyl (per)fluoropolyether [PFPE (OH)] comprising a chain Rf terminated with at least one end group of formula: —CF2CH2OH; —CF2CH2O—CH(OH)—CH2—O—CH2—CH(OH)—CH2OH; said process comprising: step 1: reacting the mixture (M) with ketones and/or aldehydes so as to selectively protect couples of hydroxyl groups on vicinal carbon atoms by forming corresponding cyclic ketal/acetal derivatives, so as to yield a protected mixture (P); step 2: reacting residual hydroxyl groups of the mixture (P) with suitable functionalizing agents enabling substantial volatility modification, so as to obtain a functionalized protected mixture (Pf); step 3: fractional distillation of the mixture (Pf) so a

Abstract: A process for purifying a polyol(per)fluoropolyether derivative [polyol (P)] from a mixture (M) of hydroxyl(per)fluoropolyether derivatives, such polyol (P) comprising one or more hydroxyl(per)fluoropolyether derivatives [PFPEs (OH)] comprising at least one (per)fluoropolyoxyalkylene chain (chain Rf) and at least one end-group having formula (t3): —CF2CH2OCH2CH(OH)CH2OCH2CH(OH)CH2OH, such mixture (M) comprising said polyol (P) and at least one hydroxyl(per)fluoropolyether derivative [PFPE (OH)] different from polyol (P) and comprising at least one chain Rf and at least one end-group selected from end-groups having formula (t1): —CF2CH2OH and formula (t2): —CF2CH2OCH2CH(OH)CH2OH.

Abstract: A cyclic phosphazene compound complying with formula (I) or (II): wherein: Rfand R?frepresent independently a (per)fluoropolyoxyalkylene chain comprising recurring units Ro, said recurring units, distributed randomly through the (per)fluoropolyoxyalkylene chain, being chosen among; (i)—CFXO—, X being F or CF3; (ii) —CF2CFXO—, X being F or CF3; (iii) —CF2CF2CF2O—; (iv) —CF2CF2CF2CF2O—; Z and Z? represent a polar group of formula —O?M+, M being chosen among hydrogen, a monovalent metal, or an ammonium radical of formula NR1R2R3R4, or represent a polar group of formula —O?)2M?2+, M? being a divalent metal; nZ is an integer from 1 to 3; nZ? is an integer from 1 to 4; nf? is an integer such that nZ?+nf? is equal to 8; and nfis an integer such that nZ+nfis equal to 6.

Abstract: A process for the purification of a tetraol PFPE derivative [tetraol (T)] of formula (I): HO—CH2—CH(OH)—CH2—O—CH2—CF2—O—Rf—CF2—CH2O—CH2—CH(OH)—CH2OH, wherein Rf represents a fluoropolyoxyalkene chain (chain Rf), from a mixture (M) of hydroxyl (per)fluoropolyether derivatives, said mixture comprising said tetraol (T) and at least one hydroxyl (per)fluoropolyether [PFPE (OH)] comprising a chain Rf terminated with at least one end group of formula: —CF2CH2OH; —CF2CH2O—CH(OH)—CH2—O—CH2—CH(OH)—CH2OH; said process comprising: step 1: reacting the mixture (M) with ketones and/or aldehydes so as to selectively protect couples of hydroxyl groups on vicinal carbon atoms by forming corresponding cyclic ketal/acetal derivatives, so as to yield a protected mixture (P); step 2: reacting residual hydroxyl groups of the mixture (P) with suitable functionalizing agents enabling substantial volatility modification, so as to obtain a functionalized protected mixture (Pf); step 3: fractional distillation of the mixture (Pf) so a

Abstract: A process for the manufacture of a polyol (per)fluoropolyether derivative, comprising: 1. reacting at least one triol having two protected hydroxyl functions and a free hydroxyl group with an activating agent, to yield an activated protected triol; 2. reacting the activated protected triol with a functional (per)fluoropolyether derivative of formula: T2-O—Rf-T1, wherein: Rf represents a fluoropolyoxyalkene chain which is a fluorocarbon segment comprising ether linkages in main chain; T1 and T2, equal to or different from each other, are independently selected from non-functional groups of formula: —CF3, —CF2—CF3, —CF2Cl, —CF2CF2Cl, —CF2—COF, —COF: and functional hydroxyl groups comprising at least one hydroxyl group, with the provisio that at least one of T1 and T2 is a functional hydroxyl group as above detailed to yield a protected polyol (per)fluoropolyether derivative; and 3. deprotecting the protected polyol (per)fluoropolyether derivative to yield the polyol (per)fluoropolyether derivative.

Abstract: A cyclic phosphazene compound complying with formula (I) or (II): wherein: Rf and R?f represent independently a (per)fluoropolyoxyalkylene chain comprising recurring units Ro, said recurring units, distributed randomly through the (per)fluoropolyoxyalkylene chain, being chosen among; (i)—CFXO—, X being F or CF3; (ii) —CF2CFXO—, X being F or CF3; (iii) —CF2CF2CF2O—; (iv) —CF2CF2CF2CF2O—; Z and Z? represent a polar group of formula —O?M+, M being chosen among hydrogen, a monovalent metal, or an ammonium radical of formula NR1R2R3R4, or represent a polar group of formula —O?)2M?2+, M? being a divalent metal; nZ is an integer from 1 to 3; nZ? is an integer from 1 to 4; nf? is an integer such that nZ?+nf? is equal to 8; and nf is an integer such that nZ+nf is equal to 6.