Patent application EP20178452A (EP), filed 2020-06-05
Publication number: EP3747670A1
Title: BODY PLY SKIM AND/OR INNERLINER HIGH IMPERMEABILITY COMPOUND
Abstract: An innerliner and/or body ply skim rubber compound comprising at least:- a cross-linkable unsaturated chain polymer base,- a filler system, and- a vulcanization system;The filler system comprises, for at least 50% by weight, a mixture of at least three different types of carbon black comprising a first carbon black with a surface area of between 25 and 40 m<sup>2</sup>/g, a second carbon black with a surface area of between 70 and 90 m<sup>2</sup>/g and a third carbon black with a surface area of between 800 and 1200 m<sup>2</sup>/g.
IPC codes: B60C   1/    00            A I
C08K   3/    04            A I
C08L  71/    03            A I
C08K   3/    06            A I
C08K   5/    45            A I
Claims: number: 1
text: Innerliner and/or body ply skim rubber compound comprising at least:
number: 2
text: Rubber compound according to claim 1, characterized in that said first carbon black constitutes from 80 to 20% by weight of the mixture of at least three types of filler, said second carbon black constitutes from 10 to 40% by weight of the mixture of at least three types of filler, said third carbon black constitutes from 10 to 40% by weight of the mixture of at least three types of filler.
number: 3
text: Rubber compound according to claim 2, characterized in that said first carbon black constitutes 60 to 20% by weight of the mixture of at least three types of filler, said second carbon black constitutes from 20 to 40% by weight of the mixture of at least three types of filler, said third black carbon constitutes from 20 to 40% by weight of the mixture of at least three types of filler.
number: 4
text: Innerliner layer, characterized in that it is manufactured with the compound according to one of the previous claims.
number: 5
text: Body ply skim characterized in that it is manufactured with a compound according to one of claims 1 to 3.
number: 6
text: Pneumatic tyre characterized in that it comprises an innerliner layer and/or a body ply skim manufactured according to one of claims 1 to 3.
Office action: search_report, dated 2020-12-09
Prior art cited: ref_id: EP2954002A1
ref_type: patent
severity: background
ref_id: US2010181002A1
ref_type: patent
severity: background
ref_id: EP2615131A1
ref_type: patent
severity: background
ref_id: WO2014122622A1
ref_type: patent
severity: background
ref_id: US2010181002
ref_type: patent
severity: background
ref_id: EP2615131
ref_type: patent
severity: background
ref_id: WO2014122622
ref_type: patent
severity: background
ref_id: EP2954002
ref_type: patent
severity: background
Final disposition: pending (2020-12-09)