Patent MX-2022006343-A (MX)
Title: Rubber composition for an inner liner for vehicle tyres.
Inventor: WITTMANN TOBIAS
IPC: C08L21/00
Filed: 2021-09-22
Abstract: The invention relates to a rubber composition, comprising: a rubber component, which has at least one halobutyl rubber selected from the group consisting of bromobutyl rubber and chlorobutyl rubber; and a filler component that has at least one filler F1 with a <sup>14</sup>C content in the range of 0.20 to 0.45 Bq/g of carbon, a carbon content in the range of 60 wt.% to 85 wt.% relative to the ash-free and water-free filler, an STSA surface area in the range of 10 m<sup>2</sup>/g of filler to 50 m<sup>2</sup>/g of filler, and acidic hydroxyl groups on its surface; and wherein the proportion of halobutyl rubber in the rubber composition is 70 to 100 phr. The invention also relates to a vulcanisable and a vulcanised rubber composition based on the aforementioned rubber composition, to a kit-of-parts for producing the vulcanisable rubber composition and to a method for producing the rubber composition and the vulcanisable rubber composition. Furthermore, the invention relates to a method for further processing the vulcanisable rubber composition, in which method lengths are formed which, when cut to size, are suitable as inner liners in a method for producing a pneumatic tyre. In addition, the invention relates to the use of the aforementioned hydrothermally carbonised lignin for producing rubber compositions for inner liners.The invention relates to a rubber composition, comprising: a rubber component, which has at least one halobutyl rubber selected from the group consisting of bromobutyl rubber and chlorobutyl rubber; and a filler component that has at least one filler F1 with a <sup>14</sup>C content in the range of 0.20 to 0.45 Bq/g of carbon, a carbon content in the range of 60 wt.% to 85 wt.% relative to the ash-free and water-free filler, an STSA surface area in the range of 10 m<sup>2</sup>/g of filler to 50 m<sup>2</sup>/g of filler, and acidic hydroxyl groups on its surface; and wherein the proportion of halobutyl rubber in the rubber composition is 70 to 100 phr. The invention also relates to a vulcanisable and a vulcanised rubber composition based on the aforementioned rubber composition, to a kit-of-parts for producing the vulcanisable rubber composition and to a method for producing the rubber composition and the vulcanisable rubber composition. Furthermore, the invention relates to a method for further processing the vulcanisable rubber composition, in which method lengths are formed which, when cut to size, are suitable as inner liners in a method for producing a pneumatic tyre. In addition, the invention relates to the use of the aforementioned hydrothermally carbonised lignin for producing rubber compositions for inner liners. The present invention generally relates to the field of skin care. More particularly, the invention relates to a skin care composition that has a particularly low osmolality. The skin care composition of the invention therefore is specifically suitable for supporting the skin microbiome, because it does not create an osmotic stress that would be harmful to the bacteria after its topical application to the skin. Accordingly, skin care composition of the invention preserves and improves the vitality of the bacteria of the skin microbiome, which enhances the stability of a healthy skin microbiome. The skin care composition of the present invention can be thus used for treating or preventing skin diseases, for promoting the development of a healthy skin microbiome, for stabilizing a healthy skin microbiome, and for maintaining or promoting the vitality of bacteria of the skin microbiome.