Tyre and elastomeric compound for tyre, comprising cross-linked phenolic resins

The composition as claimed in any one of the preceding claims, wherein:

• the a least one diene elastomeric polymer (A) is selected from cis-1,4-polyisoprene, 3,4-polyisoprene, polybutadiene, optionally halogenated isoprene/isobutene copolymers, 1,3-butadiene/acrylonitrile copolymers, styrene/1,3-butadiene copolymers, styrene/isoprene/1,3-butadiene copolymers, styrene/1,3-butadiene/acrylonitrile copolymers and mixtures thereof;
• the at least one phenolic product (B) is selected from phenol, ethylphenols such as o-ethylphenol, m-ethylphenol, p-ethylphenol, and the like;
• isopropylphenols;
• butylphenols such as butylphenol, p-tert-butylphenol, and the like;
• alkylphenols such as p-tert-amylphenol, p-octylphenol, p-nonylphenol, p-cumylphenol, and the like;
• halogenophenols such as fluorophenol, chlorophenol, bromophenol, iodophenol, and the like;
• substituted monophenols such as p-phenylphenol, aminophenol, nitrophenol, dinitrophenol, trinitrophenol, and the like;
• cresols such as o-cresol, m-cresol, p-cresol, xylenols such as 2,3-xylenol, 2,4-xylenol, 2,5-xylenol, 2,6-xylenol, 3,4-xylenol, 3,5-xylenol, and the like;
• bicyclic monophenols such as 1-naphthol, 2-naphthol, and the like;
• polyphenols such as resorcin, alkylresorcin—such as 2-methylresorcin, 5-methylresorcin, 2,5-dimethylresorcin, 4-ethylresorcin, 4-n-hexylresorcin and the like;
• 4-chlororesorcin, 2-nitroresorcin, 4-bromoresorcin and the like, pyrogallol, catechol, alkylcatechol, hydroquinone, alkylhydroquinone, fluoroglucine, bisphenol A, bisphenol F, bisphenol S, dihydroxynaphthalene and the like, novolacs and resoles, preferably from novolacs;
• at least one aldehyde (D), if present, is selected from formaldehyde, acetaldehyde, propionaldehyde, chloral, furfural, glyoxal, n-butylaldehyde, caproaldehyde, allylaldehyde, benzaldehyde, crotonaldehyde, acrolein, phenylacetaldehyde, o-tolylaldehyde, salicylaldehyde, preferably it is formaldehyde;
• at least one methylene donor product (D), if present, is selected from paraformaldehyde, trioxane, tetraoxymethylene, hexamethylenetetramine (EMTA), hexamethoxymethylmelamine (EMMM), preferably EMMM;
• at least one reinforcing filler (E), if present, is selected from carbon black, conventional silica, such as sand silica precipitated with strong acids, preferably amorphous, diatomaceous earth, calcium carbonate, titanium dioxide, talc, alumina, aluminosilicates, kaolin, silicate fibres and mixtures thereof;
• and
• the at least one vulcanising agent (F) is selected from sulphur, or alternatively, sulphur-containing molecules (sulphur donors), such as caprolactam disulphide (CLD), bis (trialcoxysilyl)propyl]polysulphides, dithiophosphates, phosphorylpolysulphide (SDT) and mixtures thereof, preferably it is sulphur.

The composition as claimed in any one of the preceding claims, which comprises:

• 1 to 30 phr, preferably 3 phr to 20 phr of at least one phenolic product (B);
• 1 to 50 phr, more preferably 2 to 20 phr, even more preferably 3 to 10 phr of oxidised carbon allotrope (C);
• preferably 1 to 8 phr, more preferably 2 to 6 phr of at least one aldehyde and/or at least one methylene donor product (D);
• optionally 3 to 90 phr of reinforcing filler (E);
• and
• 0.5 to 12 phr, preferably 1 to 10 phr of at least one vulcanising agent (F).

The composition as claimed in any one of the preceding claims, comprising at least:

• 100 phr of at least one diene elastomeric polymer (A),
• 5 to 25 phr of a novolac (B),
• 2 to 6 phr of oxidised carbon black (C),
• 3 to 8 phr of a methylene donor product (D),
• 30 to 70 phr of carbon black (E), and
• 6 to 10 phr of sulphur (F).