公开(公告)号：US11091608B2

公开(公告)日：2021-08-17

申请号：US16065587

申请日：2016-12-23

Applicant: Pirelli Tyre S.p.A. ,  POLITECNICO DI MILANO

Inventor： Maurizio Stefano Galimberti ,  Roberto Sebastiano ,  Vincenzina Barbera ,  Valeria Rosaria Cipolletti ,  Gabriella Leonardi ,  Shuquan Sun ,  Luigia Rossiello

IPC: C08L9/06 ,  C08F36/06 ,  C08L23/16 ,  C08L23/22 ,  C08K5/17 ,  C08K5/20 ,  C08K5/29 ,  C08K5/353 ,  C08K5/44 ,  C08K5/3472 ,  C08K5/38 ,  C08K3/04 ,  C08K3/36 ,  C08K3/06 ,  C08K3/22 ,  C08K3/26 ,  B60C1/00 ,  C08L7/00

Abstract: The present invention relates to a vulcanizable elastomeric composition comprising a secondary accelerator that may be used in combination with sulphenamide alone, completely avoiding the use of a guanidine. Moreover, said accelerator promotes dispersion of the silica in the compound and migrates with difficulty in the elastomeric composition itself. The invention also relates to the use of a vulcanization accelerator for said elastomeric composition, to the associated vulcanization process and to a tyre comprising same.

公开(公告)号：US09975377B2

公开(公告)日：2018-05-22

申请号：US14651976

申请日：2013-12-11

Applicant: PIRELLI TYRE S.P.A.

Inventor： Lisa Grassi ,  Giuseppina Ratti ,  Omar Ballabio ,  Luigia Rossiello

IPC: B60C1/00 ,  B29D30/08 ,  B60C5/00 ,  B60C9/02 ,  B60C9/18 ,  B60C15/06 ,  C09J109/10 ,  C08K5/1515 ,  C09J105/00 ,  C08K5/06 ,  C08K5/17 ,  C08L7/00 ,  C08L9/00 ,  C08L21/02 ,  B60C9/00 ,  C08L63/00

CPC classification number: B60C1/00 ,  B29B7/002 ,  B29B7/7495 ,  B29B7/90 ,  B29D30/08 ,  B60C1/0041 ,  B60C5/00 ,  B60C9/0042 ,  B60C9/02 ,  B60C9/18 ,  B60C15/0603 ,  B60C2001/005 ,  B60C2001/0066 ,  B60C2015/0614 ,  C08K5/06 ,  C08K5/1515 ,  C08K5/17 ,  C08L7/00 ,  C08L9/00 ,  C08L21/02 ,  C08L63/00 ,  C09J105/00 ,  C09J109/10 ,  C09J2405/003 ,  C09J2409/003 ,  Y10T152/1081 ,  Y10T152/10828 ,  Y10T152/10846

Abstract: Tires for vehicle wheels having reduced environmental impact and the components thereof, in particular reinforcing structural elements such as carcass structures, belt structures, flippers and chafers, include elongated reinforcing elements treated with resorcinol and formaldehyde-free cross-linkable adhesive compositions. The adhesive compositions include at least a) a rubber latex, at least b) an epoxide and at least c) a polyamine with molecular weight higher than 190 Daltons, including at least two amino groups selected from primary —NH2 and secondary —NH— amino groups. In the structural element, these compositions confer an adhesion between cords and compounds that is comparable to, if not better than, the traditional RFL system in use in this sector. Furthermore, by suitably modifying the compound compositions in the reinforced structural elements and, possibly, also in the other elastomeric components of the tire, it is possible to manufacture tires while avoiding the use of toxic chemicals, such, as resorcinol and formaldehyde.

公开(公告)号：US11999193B2

公开(公告)日：2024-06-04

申请号：US17936989

申请日：2022-09-30

Applicant: Pirelli Tyre S.p.A.

Inventor： Davide Dall'abaco ,  Virna Formaggio ,  Luigia Rossiello ,  Thomas Hanel

IPC: B60C1/00 ,  B60C13/00 ,  C08K5/06 ,  C08K5/13 ,  C08K5/15 ,  C08L9/00

CPC classification number: B60C1/0025 ,  B60C1/00 ,  B60C13/001 ,  C08K5/06 ,  C08K5/13 ,  C08K5/15 ,  C08L9/00 ,  C08L2201/08 ,  C08L2205/03

Abstract: The present invention relates to a tyre for vehicle wheels comprising at least one external structural element comprising at least one external structural element comprising a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition comprising (i) at least one diene elastomeric polymer, and (ii) a system for protection against ozone substantially free of polymeric static protective agents which essentially consists of at least one phenolic antioxidant in an amount substantially equal to or higher than 3 phr.

公开(公告)号：US10759227B2

公开(公告)日：2020-09-01

申请号：US16079250

申请日：2017-03-01

Applicant: Pirelli Tyre S.p.A.

Inventor： Luigia Rossiello ,  Thomas Hanel

IPC: B60C1/00 ,  C08K5/09 ,  C08K5/17 ,  C08L7/00 ,  C08K5/19 ,  C08K5/18 ,  C08K3/013 ,  C08K5/00

Abstract: The present invention relates to new antioxidant and antiozonant elastomeric compositions for tyres, characterized by reduced volatility of the active compounds, improved processability and environmental sustainability, increased anti-degradation efficacy and improved surface appearance. In particular, the elastomeric compositions of the inventions comprise Salts formed by acids AC of formula (I) and amines AM of formula (II) The elastomeric compositions of the inventions are particularly suitable for the manufacture of tyre components such as sidewalls, treads and anti-abrasive layer, components that in the tyre are particularly subject to wear due to the combination of the degrading action of ozone and mechanical stresses.

公开(公告)号：US11518192B2

公开(公告)日：2022-12-06

申请号：US16489746

申请日：2018-03-05

Applicant: Pirelli Tyre S.p.A.

Inventor： Davide Dall'Abaco ,  Virna Formaggio ,  Luigia Rossiello ,  Thomas Hanel

IPC: B60C1/00 ,  B60C13/00 ,  C08L9/00 ,  C08K5/06 ,  C08K5/15 ,  C08K5/13

Abstract: The present invention relates to a tyre for vehicle wheels comprising at least one external structural element comprising at least one external structural element comprising a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition comprising (i) at least one diene elastomeric polymer, and (ii) a system for protection against ozone substantially free of polymeric static protective agents which essentially consists of at least one phenolic antioxidant in an amount substantially equal to or higher than 3 phr.