[EN] TREAD ENHANCEMENT ADDITIVES<br/>[FR] ADDITIFS D'AMÉLIORATION DE BANDE DE ROULEMENT
申请人:KRATON CHEMICAL LLC
公开号:WO2018057726A2
公开(公告)日:2018-03-29
Provided herein are novel tire tread compositions. The tire tread compositions include a rubber, a terpene-based resin and at least one filler. The terpene-based resin comprises one terpene-based monomer such as α-pinene, referred to as a homopolymer, or combinations of several terpene-based monomers selected from α-pinene, β-pinene, δ-3 carene, β-phellandrene and pyrolysates of α-pinene, β-pinene, δ-3 carene, δ-2 carene, turpentine, and combinations thereof. The terpene-based resin is generally substantially free of limonene. The terpene-based resin has a softening point of about 80°C to about 130°C, a number average molecular weight (Mn) ranging from about 500 g/mol to about 775 g/mol and a glass transition temperature (Tg) of from about 38°C to about 81°C. The tire tread composition having the terpene-based resin shows improvements of tan δ at 0 °, wet grip and rolling resistance as compared with the compositions without the terpene-based resin or comprising alpha methyl styrene resin.