Self-sealing tire sealant and pneumatic vehicle tire

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.

1 .- 7 . (canceled) 
     
     
         8 . A self-sealing tire sealant comprising fragments of expanded solids, the solids being selected from the group containing expandable graphite and microspheres. 
     
     
         9 . The self-sealing tire sealant of  claim 8 , wherein the microspheres comprise at least one of isobutane and isopentane as blowing agents. 
     
     
         10 . The self-sealing tire sealant of  claim 8 , wherein the microspheres have a shell comprising at least one polymer. 
     
     
         11 . The self-sealing tire sealant of  claim 10 , wherein the polymer is at least one copolymer of acrylonitrile and methyl acrylate. 
     
     
         12 . The self-sealing tire sealant of  claim 8  further comprising graphene structures. 
     
     
         13 . The self-sealing tire sealant of  claim 8  as disposed on an inner surface of, and opposite the tread of, a pneumatic vehicle tire. 
     
     
         14 . The self-sealing tire sealant of  claim 13  as disposed on the inner surface and having a layer thickness of from 0.5 to 8 mm. 
     
     
         15 . A self-sealing tire sealant comprising residues of expanded solids, the solids being selected from the group containing expandable graphite and microspheres. 
     
     
         16 . The self-sealing tire sealant of  claim 15 , wherein the microspheres comprise at least one of isobutane and isopentane as blowing agents. 
     
     
         17 . The self-sealing tire sealant of  claim 15 , wherein the microspheres have a shell comprising at least one polymer. 
     
     
         18 . The self-sealing tire sealant of  claim 17 , wherein the at least one polymer is at least one copolymer of acrylonitrile and methyl acrylate. 
     
     
         19 . The self-sealing tire sealant of  claim 15  further comprising graphene structures. 
     
     
         20 . The self-sealing tire sealant of  claim 15  as disposed on an inner surface of, and opposite the tread of, a pneumatic vehicle tire. 
     
     
         21 . The self-sealing tire sealant of  claim 20  as disposed on the inner surface and having a layer thickness of from 0.5 to 8 mm. 
     
     
         22 . A self-sealing tire sealant comprising fragments and residues of expanded solids, the solids being selected from the group containing expandable graphite and microspheres. 
     
     
         23 . The self-sealing tire sealant of  claim 22 , wherein the microspheres comprise at least one of isobutane and isopentane as blowing agents. 
     
     
         24 . The self-sealing tire sealant of  claim 22 , wherein the microspheres have a shell comprising at least one polymer. 
     
     
         25 . The self-sealing tire sealant of  claim 24 , wherein the polymer is at least one copolymer of acrylonitrile and methyl acrylate. 
     
     
         26 . The self-sealing tire sealant of  claim 22  further comprising graphene structures. 
     
     
         27 . The self-sealing tire sealant of  claim 22  as disposed on an inner surface of, and opposite the tread of, a pneumatic vehicle tire.