| Patent Number |
Title Of Patent |
Date Issued |
| 7563929 |
Alkylation of N'-phenyl-N-alkylphenylenediamines in ionic liquid and N'-phenyl-N-alkyl(alkylphen |
July 21, 2009 |
| A process for alkylation of a N'-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N'-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated rea |
| 7390928 |
Alkylation of N'-phenyl-N-alkylphenylenediamines in ionic liquid, N'-phenyl-N-alkyl (alkylphenyl |
June 24, 2008 |
| A process for alkylation of a N'-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N'-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated rea |
| 7361788 |
Direct alkylation of N-alkyl-N'-phenyl-p-phenylenediamine |
April 22, 2008 |
| A single-step process is disclosed for the ring alkylation of at least one N-alkyl-N'-phenyl-phenylenediamine with at least one olefin wherein the process comprises heating a mixture of the N-alkyl-N'-phenyl-phenylenediamine(s) and olefin(s) in the presence of a catalytic amount of a |
| 7205348 |
Rubber composition and method of making same |
April 17, 2007 |
| Process of producing unvulcanized rubber useful for producing vulcanized rubber with improved hysteresis, which comprises mixing a composition comprising unvulcanized rubber, carbon black and xanthogen polysulfide at an elevated temperature in a non-productive stage and composition s |
| 7053137 |
Azodicarbonamide treatment for carbon black and rubber compounds |
May 30, 2006 |
| A process for producing cured rubber is disclosed wherein the process comprises: A) mixing rubber, carbon black, and azodicarbonamide without other curative ingredients; B) adding the remaining curative ingredients in one or more subsequent mixing steps; and then C) curing the rubber; |
| 6906121 |
4-nitrosodiphenylamine derivatives and their use as coupling agents for filled rubber compounds |
June 14, 2005 |
| A composition of matter is disclosed that comprises a compound of the formula A.sub.n R, wherein: A is ##STR1## R.sub.1 is hydrocarbyl; m is 0 or 1; n is 1, 2, or 3; R is selected from the group consisting of:mono-, di-, and trivalent aliphatic groups; mono-, di-, and trivalen |
| 6573339 |
In situ preparation of bis-(benzothiazolesulfen)amide in a polymeric matrix |
June 3, 2003 |
| A process is disclosed for preparing an N-hydrocarbyl-bis-benzothiazolesulfenamide comprising reacting an N-hydrocarbyl-2-benzothiazolesulfenamide with a cyclic organic acid anhydride in situ in a polymeric matrix at elevated temperature. |
| 6245912 |
Process for making N-alkyl bis(2-pyridyl) sulfenimides |
June 12, 2001 |
| There is disclosed a process for the preparation of sulfenimides comprising: mixing, in a hydrocarbon solvent, a sulfenamide of the formula ##STR1##with an aldehyde of the formulawhere X is a sulfur atom, a --C.dbd.N-- group, or a --C.dbd.C-- group, R.sub.1 and R.sub.2 are independently |
| 6180795 |
Process for making N-alkyl bis(thiazolyl)sulfenimides |
January 30, 2001 |
| There is disclosed a process for the preparation of sulfenimides comprising: mixing, in a hydrocarbon solvent, a sulfenamide of the formula ##STR1##with an aldehyde of the formulawhere X is a sulfur atom, a --C.dbd.N-- group, or a --C.dbd.C-- group, R.sub.1 and R.sub.2 are independently |
| 4808714 |
Substituted dithiocarbamylurea accelerators |
February 28, 1989 |
| Novel substituted dithiocarbamylurea accelerators of the formula R.sup.1 NHC(O)NHSC(S)NR.sup.2 R.sup.3 wherein R is phenyl or substituted phenyl and R.sup.2 and R.sup.3 are alkyl, aryl or aralkyl or together are alkylene, oxydialkalene or thiodialkylene exhibit unexpectedly improved |
| 4631316 |
Curable rubber compositions comprising substituted dithiocarbamylurea accelerators |
December 23, 1986 |
| A compound of the formulawherein R.sup.1 is phenyl; phenyl substituted with halogen, alkyl, NR.sup.4 R.sup.5 wherein R.sup.4 and R.sup.5 are the same or different and are hydrogen or alkyl; alkoxy, alkylthio, methylenedioxy, COOR.sup.6 wherein R.sup.6 is alkyl; or NHCOOR wherein R.sup.7 |
