SE8101995L - PUNKTERINGSTILLTEPPNINGSMATERIAL - Google Patents

Claims (1)

Patent claims Self-leveling, tubeless, pneumatic tire (10) comprising a vulcanized rubber tread (11) on top of a vulcanized rubber body (14) reinforced with cord material, which body comprises a tread crown under the tread and side wall portions (12,13) which shoulder extends from the edges of the tread crown to the beads (15,16) of the tire, which beads contain an inextensible reinforcement material extending around the inner periphery of the roof, characterized by a puncture-tightening material arranged in the form of a layer (18,23) on the inside of the tire under the tread crown, on the inner surface of an inner, inner, aerated liner (1?) or laminated inner surface (24) of the intermediate body (24) and an inner liner (25) present within the inner body and extending at least from the shoulder portion thereof to the second, which additive material consists of a mixture of (A) a principal amount by weight of a low molecular weight, liquid-shaped elect, preferably liquid cis-polyisoprene, f Hot rubber, preferably depolymerized rubber, having a Brookfield viscosity at 66 ° C of 20,000-2,000,000, preferably 20,000-1,000,000 cP and a high molecular weight electron with a Mooney viscosity of 20-160 ML-4 at 100 ° C. , which mixture optionally contains a crosslinker in an amount calculated per total 100 parts by weight of the two elastomers of 0.5-2.0 parts by weight of sulfur or sulfur-releasing curing agent, 0.5-2.0 parts by weight of quinoid curing agent, 0.1-1.0 parts by weight of a curing agent which gives rise to the formation of free radicals, 2-10 parts by weight of polyisocyanate curing agent or 2-10, preferably 2.5-10 parts by weight of tetrahydrocarbyl titanate, preferably containing 1-12 carbon atoms in the alkyl groups, the gel content of the mixture being partially condition determined In toluene at room temperature is 15-60, preferably 20-50% by weight of the total weight of the mixture, and the maximum Mooney viscosity of the mixture in the Act partially bipolar state is 30-55, preferably 40-50 ML at v Liquid polybutadiene, liquid polybutene, liquid ethylene-propylene (unconjugated diene) terpolymer rubber or viscous form tsobutene-isoprene copolymer rubber, in admixture with a tackifier or plasticizer, of a residue obtained by the purification of mineral oil and formaldehyde with nitric acid corn catalyst, and (3) a minor weight of a high molecular weight solid electrically, preferably conjugated diolefin homopolymer rubber, copolymer of a major amount of conjugated diolefin and a minor monomer. , a copolymer of isobutylene and a minor amount of isoprene, ethylene-propylene (unconjugated diene) terpolymer or matt elastomer, which mixture is partially crosslinked, for example by electron coating or with N4lp of the following crosslinking agent, to a sufficient extent to prevent those of the mixture flowing at the high temperatures and high centrifugal forces corn upotrades in the dock during use, the partially crosslinked mixture having sufficient adhesion and formability to function as a point pressure material in the dock, the mixture of the component under (A) being more 4n 50 and 90% by weight and the amount of the component specified under (3) is between less than 50 and 10% by weight, both percentage intervals based on the total weight of the two elastomers, which 14 g molecular weight electr from a weight 14 NEMO = Miff 17