Ausimont S.p.a.

Solvay Specialty Polymers Italy S.p.a.

Solvay Solexis S.p.a.

Simonetta Antonella Fontana

Walter Navarrini

Rossella Silvani

Pier Antonio Guarda

Claudio Tonelli

Ezio Strepparola

Mario Visca

Claudio Adolfo Pietro Tonelli

Roberto Valsecchi

Fabrizio Mutta

Vittorio Montanari

Alberto Zompatori

Vito Tortelli

Marco Galimberti

Piero Gavezotti

Silvana Modena

Giovanni Gavazzi

Alexandre Tchistiakov

Antonio Puppo

Mary Thomson

Andrea Lotierzo

The present invention relates to novel (per)fluoropolyether (PFPE) polymer derivatives, a method for their manufacture and their use for providing an anti-soiling coating.

(Per)fluoropolyether derivatives

The present invention relates to novel (per)fluoropolyether (PFPE) polymers, to a process for their manufacture and to their use as additives in coating compositions.

(Per)fluoropolyether polymers and use thereof

(Per)fluoropolyether polymers comprising a (per)fluoropolyether chain having two ends, wherein one or both ends comprise one or more zwitterionic groups at one or both polymer ends, methods for their manufacture and uses thereof are herein disclosed. The polymers can be used in particular for protecting materials in contact with biological fluids or fluids containing biological material from contamination by organic compounds therein contained.

Zwitterionic derivatives of (per)fluoropolyethers

The invention relates to (per)fluoropolyether block copolymers comprising: A) a fluoropolyoxyalkylene segment (chain R) comprising one or more units of formula (CHXCFCFO)&#x2014; in which X is hydrogen or fluorine; B) a (per)fluoropolyoxyalkylene segment (chain Rf), that is to say a segment comprising recurring units having at least one catenary ether bond and at least one fluorocarbon moiety, said (per)fluoropolyoxyalkylene segment being different from chain Rand having a molecular weight higher than 400 g/mol. These copolymers are endowed with improves lubricant properties or with improved water and oil-repellence properties.

(per)fluoropolyether block copolymers

The invention relates to a batch chromatography process the purification of (per)fluoropolyether (PFPE) carboxylates, in particular to a process for increasing the average functionality of PFPE carboxylates mixtures.

Process for the purification of (per) fluoropolyethers with carboxylate end groups

The invention relates to a protective film for a solar cell module, to a process for manufacturing said protective film and to a solar cell module comprising said protecting film, and to a method for protecting a solar cell module comprising using of such protective film. The protective film comprises at least one layer comprising a perfluoropolyether (PFPE) polymer [polymer (F)], the polymer being obtainable by cross-linking a composition [composition (C)] comprising: a) at least one functional perfluoropolyether compound [compound (E)], the compound (E) comprising a (per)fluoropolyalkylene chain [chain (R)], and at least one unsaturated moiety, the compound (E) being present in an amount included in the range of 10% to 95% wt with respect to composition (C); b) at least one nonfuorinated compound [compound (M)] having at least one unsaturated moiety, provided that the nonfluorinated compound (M) has at least two unsaturated moieties if compound (E) has one unsaturated moiety; and c) at least one crosslinking initiator.

Protective film for a solar cell module

A process for separating bifunctional perfluoropolyethers (PFPEs) having two terminations &#x2014;CHOH from their mixtures with monofunctional PFPEs with one termination &#x2014;CHOH, of general formulaX&#x2014;O&#x2014;Rf&#x2014;Y &#x2003;&#x2003;(I)wherein Rf is a perfluoropolyoxyalkylene chain having a number average molecular weight of 500-10,000; Xand Y are end groups selected from &#x2014;CFXCHOH (wherein X is F or CF), &#x2014;CF, &#x2014;CFCl, &#x2014;CFCFCl, &#x2014;CFCl, &#x2014;CFBr, &#x2014;CFCF, wherein at least one of the two end groups is &#x2014;CFXCHOH, said process comprising the steps of:

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Method for removing water from surfaces

De-oiling composition of perfluoropolyethers and hydrofluoropolyethreal surfactants

Surface treatments with bifunctional perfluoropolyether derivatives

Method for the water removal from a surface, which comprises covering the surface with a composition having specific weight higher than that of the water, and subsequently removing water from the composition by skimming, such composition comprising a (per)fluoropolyether having molecular weight comprised between 300 and 1500 and a non ionic additive having a (perfluoropolyethereal structure similar to that of the solvent, linked to an hydrogenated part of hydrophilic type, the molecular weight of the (per)fluorinated part is comprised between 400 and 1200 and the ratio by weight between (per)fluorinated part and hydrogenated part is comprised between 1.5 and 3.5.

Composition for the removal of water from a surface

Compositions used to remove traces of water and/or organic solvents and/or oils from the component surfaces, comprising:

Compositions to remove water and/or solvents

Method for the water removal from a surface, which comprises covering the surface with a composition having specific weight higher than that of the water, and subsequently removing water from the composition by skimming, such composition comprising a (per)fluoropolyether having molecular weight comprised between 300 and 1500 and a non ionic additive having a (per-fluoropolyethereal structure similar to that of the solvent, linked to an hydrogenated part of hydrophilic type, the molecular weight of the (per)fluorinated part is comprised between 400 and 1200 and the ratio by weight between (per)fluorinated part and hydrogenated part is comprised between 1.5 and 3.5.

Method for the removal of water from surfaces

Perfluoro-2-methyl-4-methoxypentane is prepared with high selectivity by reacting perfluoro-4-methyl-2-pentene with CF.sub.3 OF at a temperature ranging from -40.degree. to +50.degree.. The reaction is preferably carried out by continuously bubbling a gaseous CF.sub.3 OF flow into a liquid phase consisting of the abovesaid pentene optionally dissolved in a solvent.

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Milan, Italy

Simonetta Antonella Fontana