logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12624197 B1

PDFFull Text
Date of Patent:
May. 12, 2026

Filed:

Sep. 22, 2021

Rubber composition for an inner liner for pneumatic vehicle tyres

Applicant:

Suncoal Industries Gmbh, Ludwigsfelde, DE;

Inventors:

Bernhard Schwaiger, Erftstadt, DE;

Tobias Wittmann, Berlin, DE;

Jacob Podschun, Berlin, DE;

Alexander Stücker, Hamburg, DE;

Assignee:

Suncoal Industries GmbH, Ludwigsfelde, DE;

Attorney:

Servilla Whitney LLC

Primary Examiner:

Patrick D Niland

Int. Cl.
CPC ...
C08L 15/02 (2006.01); B60C 1/00 (2006.01); C08K 3/04 (2006.01); C08K 3/22 (2006.01); C08K 3/34 (2006.01); C08K 5/00 (2006.01); C08K 5/11 (2006.01); C08K 5/372 (2006.01); C08K 5/44 (2006.01); C08K 5/47 (2006.01); C08L 7/00 (2006.01); C08L 9/06 (2006.01); C08L 21/00 (2006.01); C08L 23/22 (2025.01); C08L 23/28 (2025.01); C08L 61/04 (2006.01); C08L 91/00 (2006.01); C08L 97/00 (2006.01); C08L 101/00 (2006.01);
U.S. Cl.
CPC ...
C08L 15/02 (2013.01); B60C 1/0008 (2013.01); C08K 3/04 (2013.01); C08K 3/22 (2013.01); C08K 3/34 (2013.01); C08K 5/0025 (2013.01); C08K 5/11 (2013.01); C08K 5/372 (2013.01); C08K 5/44 (2013.01); C08K 5/47 (2013.01); C08L 7/00 (2013.01); C08L 9/06 (2013.01); C08L 21/00 (2013.01); C08L 23/22 (2013.01); C08L 23/28 (2013.01); C08L 61/04 (2013.01); C08L 91/00 (2013.01); C08L 97/005 (2013.01); C08L 101/00 (2013.01); C08K 2003/2296 (2013.01);
Abstract

The invention relates to a rubber composition comprising a rubber component that comprises at least one halobutyl rubber selected from the group consisting of bromobutyl rubber and chlorobutyl rubber; and a filler component that comprises at least one filler F1 which has aC 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/g of filler to 50 m/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 further relates to a vulcanisable and a vulcanised rubber composition based on the aforementioned rubber composition, a kit of parts for preparing the vulcanisable rubber composition, and methods for preparing the rubber composition and the vulcanisable rubber composition. Furthermore, the invention relates to a method for further processing the vulcanisable rubber composition, wherein webs are formed which are suitable, when cut to size, for use as inner liners in a method for manufacturing a pneumatic tyre. The invention also relates to the use of the aforementioned hydrothermally carbonised lignin for the preparation of rubber compositions for inner liners.

Find Patent Forward Citations

Loading…