Foamed sealing compounds

Foamed sealing compound for self-sealing tires, comprising:

• a sealing gel in an amount of 45 phr to 100 phr;
• resin (C) in an amount of 10 phr to 60 phr;
• a natural rubber or synthetic rubber (E) in an amount of 1 to 50 phr,
• wherein:
• said phr being based in each case on the total amount of sealing gel and the natural and/or synthetic rubber (E) in the sealing compound;
• the sealing compound has a density of 0.001 to 0.935 g/mL;
• said sealing gel is:
• i) in the form of a mixture comprising diene rubber gel (A) obtainable by emulsion polymerization of at least one conjugated diene in the presence of at least one crosslinker (I) and diene rubber gel (B) obtainable by emulsion polymerization of at least one conjugated diene in the presence of at least one crosslinker (II);
• or
• ii) obtainable by emulsion polymerization of at least one conjugated diene in the presence of at least one crosslinker (I) and/or in the presence of at least one crosslinker (II), where:
• crosslinkers (I) are acrylates and methacrylates of polyhydric C2 C20 alcohols, preferably selected from the group consisting of acrylates and methacrylates of ethylene glycol, propane-1,2-diol, butane-1,4-diol, hexanediol, polyethylene glycol having 2 to 8 oxyethylene units, neopentyl glycol, bisphenol A, glycerol, trimethylolpropane, pentaerythritol, sorbitol with unsaturated polyesters of aliphatic di- and polyols and mixtures thereof, acrylates and methacrylates of propane-1,2-diol, butane-1,4-diol, neopentyl glycol, bisphenol A, glycerol, trimethylolpropane, and pentaerythritol, and trimethylolpropane trimethacrylate (TMPTMA);
• and
• crosslinkers (II) are compound having two or more vinyl, allyl or isopropenyl groups or one maleimide unit selected from the group consisting of diisopropenylbenzene, divinylbenzene (DVB), divinyl ether, divinyl sulphone, diallyl phthalate, trivinylbenzene, triallyl cyanurate, triallyl isocyanurate, 1,2-polybutadiene, N,N′-m-phenylenemaleimide, tolylene-2,4-bis(maleimide) and triallyl trimellitate and mixtures thereof, diisopropenylbenzene, divinylbenzene,. and trivinylbenzene.