公开(公告)号：US11708456B2

公开(公告)日：2023-07-25

申请号：US17422474

申请日：2020-02-06

Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

Inventor： Pier Antonio Guarda ,  Giovanni Simeone ,  Rosaldo Picozzi ,  Marco Galimberti

IPC: C08G65/00 ,  C08G65/331 ,  C08G65/337

CPC classification number: C08G65/007 ,  C08G65/331 ,  C08G65/337

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.

公开(公告)号：US10442893B2

公开(公告)日：2019-10-15

申请号：US15743139

申请日：2016-07-07

Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

Inventor： Roberto Valsecchi ,  Rosaldo Picozzi ,  Giovanni Simeone

IPC: C08G65/00 ,  G11B5/00 ,  C10M107/00 ,  C08G65/333 ,  C08G65/335 ,  G11B5/725 ,  C10M107/38

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

公开(公告)号：US10351669B2

公开(公告)日：2019-07-16

申请号：US15528016

申请日：2015-11-16

Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

Inventor： Pier Antonio Guarda ,  Rosaldo Picozzi ,  Giovanni Simeone

IPC: C08G65/00 ,  C08G65/333 ,  C08G65/331 ,  C08G65/337 ,  C08L71/00 ,  C08G18/18 ,  C08G59/50

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

公开(公告)号：US10766844B2

公开(公告)日：2020-09-08

申请号：US15311518

申请日：2015-05-14

Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

Inventor： Roberto Valsecchi ,  Pier Antonio Guarda ,  Rosaldo Picozzi

IPC: C07C43/23 ,  C10M105/54 ,  C10M131/10 ,  G11B5/725 ,  C10M107/38 ,  C07C43/178 ,  C10M105/56 ,  C10M131/08 ,  C10N40/18

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).

公开(公告)号：US09890186B2

公开(公告)日：2018-02-13

申请号：US14896048

申请日：2014-06-03

Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

Inventor： Roberto Valsecchi ,  Rosaldo Picozzi ,  Pier Antonio Guarda

IPC: C07F9/6593 ,  C07F9/6581 ,  G11B5/725 ,  C10M105/74 ,  C08G65/00 ,  C08G65/335 ,  C08G65/337

CPC classification number: C07F9/65815 ,  C07F9/65812 ,  C07F9/65817 ,  C08G65/007 ,  C08G65/3356 ,  C08G65/337 ,  C10M105/74 ,  G11B5/725

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.