A method of producing a thiourethane resin raw material, the method including comprising the step of generating the thiourethane resin raw material by reacting a thiourethane resin and an active hydrogen compound with each other.

The present disclosure provides methods and compositions for inhibiting degradation of dimethyl trisulfide (DMTS) in solution. Concentrate compositions include DMTS and polar inorganic or organic solvent. The compositions can be stored in containers for at least 2 weeks at 54° C. or at least one year at room temperature and less than 50% of the DMTS degrades. The concentrate compositions can be diluted for use and combined with other components to form various solutions.

The present disclosure provides methods and compositions for inhibiting degradation of dimethyl trisulfide (DMTS) in solution. Concentrate compositions include DMTS and polar inorganic or organic solvent. The compositions can be stored in containers for at least 2 weeks at 54° C. or at least one year at room temperature and less than 50% of the DMTS degrades. The concentrate compositions can be diluted for use and combined with other components to form various solutions.

The invention concerns a method for treatment of a stream of mixed compounds (4a) obtained from a process (3) comprising decomposition and/or conversion of a wood or pulp material, the method comprising: feeding the stream (4a-4e) through a processing arrangement (2) comprising one or more treatment units (10, 20, 30, 40, 50) arranged to separate at least a first compound from other compounds in the stream and form a first product flow (4f) containing the first compound, wherein the one or more treatment units comprises at least a first primary separation unit (20) arranged to separate one or more compounds other than the first compound from the stream; and feeding the compounds separated from the first compound in the first primary separation unit (20) to a first auxiliary separation unit (21) so as to separate a second compound from at least one of the other compounds separated from the first compound in the first primary separation unit (20) and thereby increase the purity of said second compound and form a second product flow (22, 23) in the form of a purified second compound and/or a purified derivative of the second compound, wherein the second compound is dimethyl sulfide (DMS, CH3—S—CH3), methyl mercaptan (CH3—S—H) or acetone (CH3—CO—CH3).

The invention concerns a method for treatment of a stream of mixed compounds (4a) obtained from a process (3) comprising decomposition and/or conversion of a wood or pulp material, the method comprising: feeding the stream (4a-4e) through a processing arrangement (2) comprising one or more treatment units (10, 20, 30, 40, 50) arranged to separate at least a first compound from other compounds in the stream and form a first product flow (4f) containing the first compound, wherein the one or more treatment units comprises at least a first primary separation unit (20) arranged to separate one or more compounds other than the first compound from the stream; and feeding the compounds separated from the first compound in the first primary separation unit (20) to a first auxiliary separation unit (21) so as to separate a second compound from at least one of the other compounds separated from the first compound in the first primary separation unit (20) and thereby increase the purity of said second compound and form a second product flow (22, 23) in the form of a purified second compound and/or a purified derivative of the second compound, wherein the second compound is dimethyl sulfide (DMS, CH3—S—CH3), methyl mercaptan (CH3—S—H) or acetone (CH3—CO—CH3).

An acetal-based compound represented by Formula 1, an acetal-based prepolymer, an acetal-based polymer, and a photoresist composition including the same

##STR00001## wherein in Formula 1, R.sub.1 to R.sub.10, G, a, and b are as defined in the detailed description, and * indicates a linking site.

An acetal-based compound represented by Formula 1, an acetal-based prepolymer, an acetal-based polymer, and a photoresist composition including the same

##STR00001## wherein in Formula 1, R.sub.1 to R.sub.10, G, a, and b are as defined in the detailed description, and * indicates a linking site.

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.6—SH, 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 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.6—SH, 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 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.6—SH, 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.