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：US11046113B2

公开(公告)日：2021-06-29

申请号：US16343738

申请日：2017-11-20

Applicant: PIRELLI TYRE S.P.A.

Inventor： Barbara Rampana ,  Lisa Grassi ,  Mario Mariani ,  Pierangelo Misani

IPC: B60C9/22 ,  B60C9/00 ,  B60C9/20 ,  B60C9/18

Abstract: Motorcycles tyre including a carcass structure, a zero-degree belt structure arranged in a radially outer position with respect to the carcass structure and a tread band arranged in a radially outer position with respect to the belt structure. The belt structure includes at least one hybrid reinforcing cord that has an elongation greater than 4% when subjected to a load equal to about 50 N and a tangent modulus with a monotonic progression as the elongation increases for elongations comprised between 4% and at least 9%.