Rubber compositions
AssigneeRubber Nano Products (Proprietary) Limited
InventorsChristopher Dennis Woolard, Katherine Garde, Robert Michael Bosch
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Abstract
The present invention relates to rubber compositions containing a filler and comprising (i) at least one rubber containing olefinic unsaturation and (ii) functionalized nano transition metal oxide and/or sulfide particles. The invention further relates to a method of manufacture of the rubber compositions and to the use of the compositions in tires, belts and/or hoses.
Claims32
A rubber composition containing a filler and comprising:
- (i) at least one rubber containing olefinic unsaturation and (ii) functionalized nano transition metal oxide and/or sulfide particles, wherein the functionalized nano transition metal oxide and/or sulfide particles are end-capped nano transition metal oxide and/or sulfide particles with a capping agent selected from the group consisting of 2-mercaptobenzothiazole, bis-benzothiazole-2,2′-disulfide, N-oxydiethylene-2-benzothiazole-sulfenamide, N-oxydiethylenethiocarbamoyl-N-oxydiethylene sulfenamide, tetramethyl thiuram disulfide, tetramethyl thiuram monosulfide, tetraethyl thiuram disulfide, tetraethyl thiuram monosulfide, tetrabenzyl thiuram disulfide, tetrabenzyl thiuram monosulfide, tetrabutyl thiuram disulfide, tetrabutyl thiuram monosulfide, tetraisopropyl thiuram disulfide, tetraisopropyl thiuram monosulfide, N-cyclohexylthiophthalimide, N-cyclohexyl-2-benzothiazole sulfenamide, N-tert-butyl-2-benzothiazole sulfenamide, 4-morpholinyl-2-benzothiazole disulfide, dipentamethylene thiuram disulfide, dipentamethylene thiuram monosulfide, dipentamethylene thiuram tetrasulfide, 4,4′-dithiomorpholine, 2-mercaptotoluimidazole, ethylene thiourea, trimethylthiourea, 1,3-diethylethiourea, and 1,3-dibutylthiourea.
A method of processing a rubber composition containing a filler, said method comprising mixing together (i) at least one rubber containing olefinic unsaturation and (ii) functionalized nano transition metal oxide and/or sulfide particles,
- wherein the functionalized nano transition metal oxide and/or sulfide particles are end-capped nano transition metal oxide and/or sulfide particles with a capping agent selected from the group consisting of 2-mercaptobenzothiazole, bis-benzothiazole-2,2′-disulfide, N-oxydiethylene-2-benzothiazole-sulfenamide, N-oxydiethylenethiocarbamoyl-N-oxydiethylene sulfenamide, tetramethyl thiuram disulfide, tetramethyl thiuram monosulfide, tetraethyl thiuram disulfide, tetraethyl thiuram monosulfide, tetrabenzyl thiuram disulfide, tetrabenzyl thiuram monosulfide, tetrabutyl thiuram disulfide, tetrabutyl thiuram monosulfide, tetraisopropyl thiuram disulfide, tetraisopropyl thiuram monosulfide, N-cyclohexylthiophthalimide, N-cyclohexyl-2-benzothiazole sulfenamide, N-tert-butyl-2-benzothiazole sulfenamide, 4-morpholinyl-2-benzothiazole disulfide, dipentamethylene thiuram disulfide, dipentamethylene thiuram monosulfide, dipentamethylene thiuram tetrasulfide, 4,4′-dithiomorpholine, 2-mercaptotoluimidazole, ethylene thiourea, trimethylthiourea, 1,3-diethylethiourea, and 1,3-dibutylthiourea.
Dependencies are inferred from the claim text.