US 11,840,044 B2
Multilayer tube and method for making same
Michael J. Tzivanis, Chicopee, MA (US); Jianfeng Zhang, Shrewsbury, MA (US); Xipeng Liu, Concord, MA (US); and Charles S. Golub, Westford, MA (US)
Assigned to SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US)
Filed by SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US)
Filed on Apr. 12, 2021, as Appl. No. 17/228,182.
Claims priority of provisional application 63/011,728, filed on Apr. 17, 2020.
Prior Publication US 2021/0323262 A1, Oct. 21, 2021
Int. Cl. F16L 11/04 (2006.01); B32B 1/08 (2006.01); B32B 25/04 (2006.01); B29C 48/09 (2019.01); B29C 48/21 (2019.01); C08G 65/00 (2006.01); C08G 71/04 (2006.01); C08G 77/24 (2006.01); B32B 27/28 (2006.01); B29K 19/00 (2006.01)
CPC B32B 1/08 (2013.01) [B29C 48/09 (2019.02); B29C 48/21 (2019.02); B32B 25/042 (2013.01); B32B 27/285 (2013.01); C08G 65/00 (2013.01); C08G 71/04 (2013.01); C08G 77/24 (2013.01); F16L 11/04 (2013.01); B29K 2019/00 (2013.01); B32B 2597/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A multilayer tube comprising:
an inner layer comprising a fluoroether elastomer;
an outer layer comprising a non-fluoroether based elastomer; and
an adhesion force between the inner layer and the outer layer of at least about 1 ppi, wherein the fluoroether elastomer of the inner layer comprises a fluoroether elastomer with silicon cross-linking groups, wherein the multilayer tube has a composite flexural modulus of at least about 50 MPa as measured by ASTM D790.