William S York

US Patent:

7674861, Mar 9, 2010

Filed:

Oct 30, 2008

Appl. No.:

12/290365

Inventors:

William Michael York - Concord NC, US
Richard W. Cruse - Yorktown Heights NY, US
Carla Recker - Hannover, DE
Thomas Kramer - Springe, DE
Katharina Herzog - Harsum, DE

Assignee:

Momentive Performance Materials Inc. - Albany NY

International Classification:

C08F 8/34

US Classification:

5253327, 525352

Abstract:

A thiocarbamoyldisulfanyl-functional cycloaliphatic compound, useful as a crosslinker for filled sulfur-vulcanizable elastomer compositions, is represented by the general formula:G[-CH—S—S—C(═S)NR]wherein G is a saturated, monocyclic aliphatic group of valence n containing from 5 to 12 carbon atoms and optionally containing at least one halogen or a saturated monocyclic silicone [RSiO—][RSiO—]group of valence n; each R independently is a hydrogen or a monovalent hydrocarbon of up to 20 carbon atoms; each occurrence of subscripts a independently is an integer wherein a is 2 to 6; n is an integer of from 3 to 6; and, p is an integer of from 0 to 3.

US Patent:

8182626, May 22, 2012

Filed:

Oct 30, 2008

Appl. No.:

12/290427

Inventors:

Carla Recker - Hannover, DE
William Michael York - Concord NC, US
Thomas Kramer - Springe, DE
Katharina Herzog - Harsum, DE
Boris Mergell - Barsinghausen, DE
Richard W. Cruse - Yorktown Heights NY, US

Assignee:

Continental AG - Hannover

International Classification:

B29C 35/00
B29C 35/02
C08J 3/24

US Classification:

1561101, 524430, 524578, 5245755, 524571, 524579, 524495, 524394, 152158

Abstract:

A tire composition with a Shore A hardness, according to DIN 53 505 and ASTM D2240, of not less than 40 and not greater than 95 and a glass-transition temperature T(E″max), according to DIN 53 513 with a specified temperature sweep of −80 C. to +80 C. and a specified compression of 10+0. 2% at 10 Hz, not less than −80 C. and not greater than 0 C. , with improved abrasion performance, in particular for pneumatic tires, has the following composition:.

US Patent:

8227538, Jul 24, 2012

Filed:

Jun 5, 2008

Appl. No.:

12/156803

Inventors:

William Michael York - Concord NC, US
Carla Recker - Hannover, DE
Katharina Herzog - Harsum, DE
Hajo Weinreich - Hessisch Oldendorf, DE
Boris Mergell - Barsinghausen, DE
Viktoriya Tkachenko - Hannover, DE
Norbert Mueller - Nienhagen, DE
Juergen Wagemann - Bad Salzdetfurth, DE

Assignee:

Continental AG - Hannover

International Classification:

C08K 3/18
C04B 28/26
C04B 24/26
A61K 9/16
B60C 1/00
C08J 3/00
C08L 23/06

US Classification:

524430, 524543, 524442, 524552, 5245755, 524571, 524579, 524570, 524585

Abstract:

A rubber mixture with improved abrasion with improved abrasion performance, in particular for pneumatic tires, has the following composition: from 30 to 100 phr of at least one diene rubber; from 0. 1 to 10 phr of at least one vulcanization accelerator selected from the group consisting of: thiazole accelerators, mercapto accelerators, sulfenamide accelerators, guanidine accelerators, thiuram accelerators, dithiocarbamate accelerators, amine accelerators, thioureas, and/or other accelerators; and a vulcanization system of sulfur comprising elemental sulfur, sulfur donor and silane between 0. 25 and 0. 08 moles per 100 parts by weight of the rubber elastometer, whereby the free sulfur contributes in the range of 0 to 70%, the sulfur donor contributes in the range of 5 to 30%, and the silane contributes in the range of 20 to 95%.