Self-sealing tire sealant and pneumatic vehicle tire

US9802446B2 · kind B2 · utility

Assignee

• Continental Reifen Deutschland GmbH · DE

Inventors

• Markus Dahlke · Wunstorf, DE
• Dieter Jeromin · Hannover, DE
• Joe Guardalabene · Hannover, DE
• Thomas Völker · Seelze, DE
• Fei Liu · Yantai, CN
• Andreas Tyburski · Peine, DE
• Martin Convey · Hannover, DE

Key dates

• Filing date: Feb 8, 2017
• Grant date: Oct 31, 2017
• Expiry date: Feb 8, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2323/22
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Self-sealing tire sealants are provided which contain fragments and/or residues of expanded solids, where the solids are selected from the group containing expandable graphite and microspheres. In some aspects, the microspheres include at least isobutane and/or isopentane as blowing agents. The microspheres may also have a shell containing at least one polymer, and in some cases the polymer is at least one copolymer of acrylonitrile and methyl acrylate. The self-sealing tire sealant may further include graphene structures. In some aspects the interior of a pneumatic vehicle tire has the self-sealing tire sealant disposed on the inner surface, opposite the tire tread, and the layer thickness of the tire sealant may be from 0.5 to 8 mm.