Solvay Specialty Polymers Italy S.p.a.

Solvay Solexis S.p.a.

Politecnico Di Milano

Claudio Adolfo Pietro Tonelli

Giuseppe Marchionni

Ivan Diego Wlassics

Solange Barbieri

Piero Gavezotti

Fabrizio Mutta

Simonetta Antonella Fontana

Letanzio Bragante

Vincenzo Arcella

Marco Apostolo

Marco Avataneo

Roberto Valsecchi

Graziano Giuseppe Vezzulli

Marco Galimberti

Alessio Marrani

Aldo Sanguineti

Prakash Purushottam Wadgaonkar

Rosaldo Picozzi

Paula Cojocaru

Silvia Rita Petricci

Pasquale Campanelli

Ivan Falco

Emanuele Di Nicolo'

Francesco Maria Triulzi

Roberto Biancardi

Sanjay Gurbasappa Charati

Floryan De Campo

Gourav Upadhyay

Ritu Ahuja

Shamal Menon

Antonio Mattia Grande

The invention relates to a method for attenuating vibrations and/or shocks, said method comprising providing a damper assembly which comprises a moving part and a supramolecular polymer in contact with said moving part, and exposing said moving part to said vibrations and/or shocks, wherein said supramolecular polymer is obtained by reacting: at least one first polymer [polymer (P1)] comprising a polymer chain [chain (R)] consisting of a plurality of non-ionisable recurring units [units (U)], said polymer (P1) having two chain ends (E1, E1'), each end comprising at least one ionisable acid group, and at least one second polymer [polymer (P2)] comprising a polymer chain [chain (R)] consisting of a plurality of recurring units [units (U)], said chain (R) being equal to or different from that of polymer (P1), and said polymer (P2) having two chain ends (E2, E2&#x2032;), each end comprising at least one ionisable amino group.

Method for damping shocks and vibrations

A process for the manufacture of a (per)fluoropolyether amine comprising reacting a sulfonic ester of a (per)fluoropolyether alcohol with an excess of ammonia or organic amine at selected temperature is herein disclosed. The process allows obtaining (per)fluoropolyether amines, in particular primary, secondary and tertiary (per)fluoropolyether amines with high yields and selectivity and can be conveniently applied on an industrial scale.

Process for the synthesis of (per)fluoropolyether amines

The present invention pertains to a process for the manufacture of a crosslinkable fluoropolymer, to said crosslinkable fluoropolymer and the crosslinked fluoropolymer obtainable therefrom, to a film comprising said crosslinkable fluoropolymer or said crosslinked fluoropolymer and to uses of said crosslinked fluoropolymer film in various applications.

Crosslinkable fluoropolymers

Disclosed are mixtures containing: mono- and bi-functional polymers [polymers (P-A) and (P&#x2014;B)] comprising a plurality of (per)fluoropolyether segments [segments (S)] joined together by hydrogenated (poly)ether segments [segments (S)], said polymers having two ends, wherein one or both ends comprises a hydroxy or a leaving group; a non-functional polymer comprising a plurality of (per)fluoropolyether segments (S) joined together by hydrogenated (poly)ether segments (S), with the proviso that the hydrogenated (poly)ether segments (S) are not segments of formula &#x2014;CHOCHOCH&#x2014;. Disclosed are also monofunctional polymers (P-A) that can be isolated from such mixtures. Methods for the obtainment of the mixtures and for separating the polymers therein contained are also provided, as well as methods of using the mixtures or each polymer therein contained as intermediates or building blocks for the synthesis of other polymers or as ingredients of compositions.

Mixtures of mono-, bi- and non-functional fluorinated polymers comprising a plurality of (per)fluoropolyether segments

The present invention relates to thermoplastic polyamides (PA) comprising recurring units derived from a PFPE dicarboxylic acid (PFPA-DA) or a PFPE diamine (PFPE-NN) in a defined weight amount with respect to other units derived from the other monomers used in the course of polymerization. Polyamides (PA) are endowed with improved surface properties, chemical resistance and reduced brittleness and do not require the addiction of impact modifiers.

Polyamides modified with (per)fluoropolyether segments

The present invention relates to non-aqueous fluoropolymer compositions useful for the preparation of polymeric materials.

Non-aqueous cross-linkable fluoropolymer compositions

A polymer [polymer (P)] comprising a plurality of (per)fluoropolyether (PFPE) segments [segments (S)] joined together by hydrogenated (poly)ether segments [segments (S)], said polymers (P) having two end groups [groups (E)], each group (E) comprising a hydroxy or a leaving group, with the proviso that the hydrogenated (poly)ether segment (S) is not a segment of formula &#x2014;CHOCHOCH&#x2014; is herein disclosed. Disclosed is also a method for the manufacture of polymer (P) and a polymer obtainable by full or partial fluorination of polymer (P). Polymer (P) and polymers obtainable therefrom by full or partial fluorination can be conveniently used in the manufacture of lubricant compositions or of compositions for imparting hydro-/oleo-repellence to substrates. Said polymers can also be used as intermediates for the manufacture of other polymers or block copolymers.

Bifunctional fluorinated polymers comprising a plurality of (per)fluoropolyether segments

A poly-[1-4]-D-glucosamine derivative comprising [1-4]-D-glucosamine recurring units and comprising a fluoropolyether chain bound to the nitrogen atom in the C-2 position of at least one of the [1-4]-D-glucosamine recurring units.

Fluorinated chitosan derivatives

The invention relates to a non-aqueous fluoropolymer composition comprising: a) at least one fluorinated ionizable polymer [polymer (A)] as defined in the description, and b) at least one fluorinated ionizable polymer [polymer (B)] as defined in the description; c) at least one fluorinated solvent; and d) at least one alcohol. The invention further relates to a process for manufacturing the composition and to the use of the composition for preparing polymeric materials.

Non-aqueous fluoropolymer compositions

The present invention pertains to a process for the manufacture of a grafted fluoropolymer [polymer (Fg)], said process comprising reacting: A) at least one fluoropolymer comprising at least one functional group selected from the group consisting of a hydroxyl group and a carboxylic acid group [polymer (F)], B) at least one polyoxyalkylene (POA) of formula (I): R&#x2014;(CH&#x2014;O)&#x2014;(CHCHRO)&#x2014;(CH&#x2014;O)&#x2014;R, wherein at least one of Rand Ris a reactive group comprising at least one heteroatom selected from oxygen and nitrogen different from the hydroxyl group, the remaining, if any, being a &#x2014;[O]&#x2014;CHalkyl group, wherein z is 0 or 1, Ris a hydrogen atom or a C-Calkyl group, x and x', equal to or different from each other, are independently 0 or 1, and n is an integer comprised between 2 and 1000, preferably between 5 and 200, C) optionally, in the presence of at least one catalyst, and D) optionally, in the presence of at least one organic solvent (S). The present invention also pertains to grafted fluoropolymers obtained from said process and to uses of said grafted fluoropolymers for manufacturing porous membranes.

Hydrophilic fluoropolymer

The invention pertains to certain (per)fluoropolyether triazine derivatives comprising at least one triazine group and at least one fluoropolyoxyalkene chain (chain R) comprising a fluorocarbon segment having ether linkages in main chain, said chain Rcomprising 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.

Triazine derivative

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 present invention relates to (per)fluoropolymer compositions, in particular to (per)fluoropolyether compositions comprising:&#x2014;a (per)fluoropolymer having more than two carboxy groups and&#x2014;a polyamine. The invention further relates to processes for preparing said compositions and to molded articles obtained from said compositions.

(Per)fluoropolymer composition

The present invention relates to a process for increasing the content of bifunctional species in mixtures of non functional, mono- and bifunctional (per)fluoropolyethers which comprises the adsorption of a (per)fluoropolyether mixture onto an adsorbing stationary phase, a first desorption step with a supercritical fluid only and a second desorption step with the supercritical fluid and a mixture of a polar solvent.

Growing community of inventors

Paderno D'Adda, Italy

Claudio Adolfo Pietro Tonelli