A chain transfer agent composition comprises at least one branched C.sub.10 mercaptan selected from 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, or combinations thereof. The chain transfer agent composition can be a component of an emulsion polymerization mixture and can be used in a process for emulsion polymerization for the production of polymers, for example, via free-radical polymerization.

The invention relates to a catalyst comprising an active component based on molybdenum and on potassium and a support based on hydroxyapatite, and also to a process for preparing said catalyst and a process for producing methyl mercaptan in a catalytic process by reaction of carbon monoxide, sulphur and/or hydrogen sulphide and hydrogen, comprising the use of said catalyst.

The invention relates to a catalyst comprising an active component based on molybdenum and on potassium and a support based on hydroxyapatite, and also to a process for preparing said catalyst and a process for producing methyl mercaptan in a catalytic process by reaction of carbon monoxide, sulphur and/or hydrogen sulphide and hydrogen, comprising the use of said catalyst.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof. Compositions comprising C.sub.11+ mercaptans, wherein the C.sub.11+ mercaptans are characterized by structure R.sup.6SH, wherein R.sup.6 is an alkyl group derived from one or more C.sub.11+ monoolefins, and wherein the one or more C.sub.11+ monoolefins comprise C.sub.11 internal monoolefins, C.sub.12 internal monoolefins, C.sub.13 internal monoolefins, C.sub.14 internal monoolefins, 1-tetradecene, 1-hexadecene, or combinations thereof. Compositions comprising branched C.sub.10+ mercaptans, wherein the branched C.sub.10+ mercaptans are characterized by structure R.sup.14SH, wherein R.sup.14 is an alkyl group derived from one or more branched C.sub.10 to C.sub.30 monoolefins.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof. Compositions comprising C.sub.11+ mercaptans, wherein the C.sub.11+ mercaptans are characterized by structure R.sup.6SH, wherein R.sup.6 is an alkyl group derived from one or more C.sub.11+ monoolefins, and wherein the one or more C.sub.11+ monoolefins comprise C.sub.11 internal monoolefins, C.sub.12 internal monoolefins, C.sub.13 internal monoolefins, C.sub.14 internal monoolefins, 1-tetradecene, 1-hexadecene, or combinations thereof. Compositions comprising branched C.sub.10+ mercaptans, wherein the branched C.sub.10+ mercaptans are characterized by structure R.sup.14SH, wherein R.sup.14 is an alkyl group derived from one or more branched C.sub.10 to C.sub.30 monoolefins.

Compositions comprising branched C.sub.10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof. Compositions comprising C.sub.11+ mercaptans, wherein the C.sub.11+ mercaptans are characterized by structure R.sup.6SH, wherein R.sup.6 is an alkyl group derived from one or more C.sub.11+ monoolefins, and wherein the one or more C.sub.11+ monoolefins comprise C.sub.11 internal monoolefins, C.sub.12 internal monoolefins, C.sub.13 internal monoolefins, C.sub.14 internal monoolefins, 1-tetradecene, 1-hexadecene, or combinations thereof. Compositions comprising branched C.sub.10+ mercaptans, wherein the branched C.sub.10+ mercaptans are characterized by structure R.sup.14SH, wherein R.sup.14 is an alkyl group derived from one or more branched C.sub.10 to C.sub.30 monoolefins.

The present invention discloses processes for producing a thiol compound or a sulfide compound from an olefin compound. Diphenylamine or a phenol compound can be used to increase the rate of conversion of the olefin compound to the thiol compound or the sulfide compound.