Mixed Decyl Mercaptans Compositions and Methods of Making Same

Compositions comprising branched Cmercaptans 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 mercaptans, wherein the C mercaptans are characterized by structure R—SH, wherein Ris an alkyl group derived from one or more C monoolefins, and wherein the one or more C monoolefins comprise Cinternal monoolefins, Cinternal monoolefins, Cinternal monoolefins, Cinternal monoolefins, 1-tetradecene, 1-hexadecene, or combinations thereof. Compositions comprising branched C mercaptans, wherein the branched C mercaptans are characterized by structure R—SH, wherein Ris an alkyl group derived from one or more branched Cto Cmonoolefins. 1. A composition comprising C mercaptans , wherein at least about 50 wt. % of the C mercaptans are branched Cto Cmercaptans characterized by the general formula R—SH , wherein Ris a branched alkyl group; and wherein Rhas from 10 to 30 carbon atoms.3. The composition of claim 1 , wherein Ris a Cto Calkyl group.4. A composition comprising C sulfides claim 1 , wherein at least about 50 wt. % of the C sulfides are branched Cto Csulfides represented by structure R—S—R claim 1 , wherein Rand Rare each independently a functional group derived from an olefin claim 1 , and wherein the olefin comprises a branched Cto Cmonoolefin.6. The composition of claim 5 , wherein Ris a Cto Calkyl group.7. The composition of claim 4 , wherein the olefin further comprises from about 0.1 mol % to about 26 mol % linear Cto Cmonoolefins.8. The composition of claim 4 , wherein the olefin further comprises from about 0.1 mol % to about 5 mol % Cmonoolefins claim 4 , the Cmonoolefins comprising at least about 95 mol % 1-octene.9. The composition of claim 4 , wherein the olefin comprises i) at least about 70 wt. % ...

DIALKYL POLYSULFIDE, PROCESS FOR PREPARING DIALKYL POLYSULFIDE, EXTREME PRESSURE ADDITIVE, AND LUBRICATING FLUID COMPOSITION

The present invention provides a dialkyl polysulfide which can be suitably used as an extreme pressure additive that can be added to a lubricant in a wide range of amounts, that enables effective formation of a film of a metal sulfide on a metal surface, and that is less likely to cause corrosion of the metal surface. In particular, provided is a dialkyl polysulfide containing compounds represented by General Formula (1) (where Rand Reach represent an alkyl group, and n is an integer from 1 to 6), wherein the total content of a compound in which n in General Formula (1) is 2 and a compound in which n in General Formula (1) is 3 is in the range of 80 to 100 mass % relative to the entire amount of the compounds represented by General Formula (1). 114-. (canceled)16. The dialkyl polysulfide according to claim 15 , wherein the total content of a compound in which n in General Formula (1) is 2 and a compound in which n in General Formula (1) is 3 is in the range of 85 to 95 mass % relative to the entire amount of the compounds represented by General Formula (1).17. The dialkyl polysulfide according to claim 15 , wherein Rand Reach represent a linear alkyl group having 4 to 20 carbon atoms.18. The dialkyl polysulfide according to claim 15 , wherein the first process includes allowing the 1-olefin compound (a) having a linear end to react with sulfur in the presence of a hydrogen sulfide at 60 to 130° C. and then holding a reaction system at 160 to 200° C. for 5 to 48 hours to obtain the dialkyl polysulfide (A).19. A method for producing a dialkyl polysulfide claim 15 , the method comprising a first process in which a 1-olefin compound (a) having a linear end is allowed to react with sulfur in the presence of a hydrogen sulfide to obtain a dialkyl polysulfide (A) and a second process in which the dialkyl polysulfide compound (A) is allowed to react with a sulfide of an alkali metal to reduce the number of sulfur atoms contained in the dialkyl polysulfide (A).20. The method ...

COMPOUNDS AS L-CYSTINE CRYSTALLIZATION INHIBITORS AND USES THEREOF

A method of preventing or inhibiting L-cystine crystallization is disclosed, using the compounds of formula I: 2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. A method according to wherein the compound is of formula I; the subscript m is 0; the subscript v is 0; and the compound is according to formula II:{'br': None, 'sup': 1a', '1b, 'R-A-R\u2003\u2003II;'}{'sup': 1a', '1b, 'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'and wherein A, Rand Rare as in .'}10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. (canceled)23. (canceled)24. (canceled)25. (canceled)26. (canceled)27. (canceled)28. (canceled)29. (canceled)30. (canceled)31. (canceled)32. (canceled)33. (canceled)34. (canceled)35. (canceled)36. (canceled)37. (canceled)38. (canceled)39. (canceled)40. (canceled)41. (canceled)42. (canceled)43. (canceled)44. (canceled)46. (canceled)47. (canceled)48. (canceled)49. (canceled)50. (canceled)51. The method of claim 1 , wherein one of Rand Ris H; and the other is alkyl or aryl.52. The method of claim 1 , wherein one of Rand Ris H; and the other is Me claim 1 , Et claim 1 , n-Pr claim 1 , i-Pr claim 1 , n-Bu claim 1 , t-Bu claim 1 , or Ph.53. (canceled)54. (canceled)55. (canceled)56. (canceled)57. (canceled)58. (canceled)59. The method of claim 1 , wherein each of Rand Ris alkyl claim 1 , cycloalkyl claim 1 , or aryl.60. The method of claim 1 , wherein each of Rand Ris independently Me claim 1 , Et claim 1 , n-Pr claim 1 , i-Pr claim 1 , n-Bu claim 1 , t-Bu claim 1 , cyclohexyl claim 1 , cyclopropyl claim 1 , or Ph.61. The method of claim 1 , wherein each of Rand Ris alkenyl.62. The method of claim 1 , wherein each of Rand Ris alkynyl.63. (canceled)64. (canceled)65. (canceled)66. (canceled)67. (canceled)68. The method of claim 1 , wherein each of Rand Ris Ph.70. (canceled)71. (canceled)72. (canceled)73. (canceled)74. ( ...

High Stability Lubricating Oil Base Stocks and Processes for Preparing the Same

Compounds having the formula (F-I) below are provided herein: 2. The lubricant base stock of claim 1 , wherein Ris hydrogen.3. The lubricant base stock of claim 1 , wherein Ris a C-Calkyl group.4. The lubricant base stock of claim 1 , wherein Ris a C-Clinear alkyl group.5. The lubricant base stock of claim 1 , wherein:{'sup': '2', 'sub': 4', '30, 'Ris a C-Clinear alkyl group.'}6. The lubricant base stock of claim 5 , wherein:{'sup': '2', 'Ris a branched alkyl group represented by formula (F-II), and one of the following conditions is met{'sup': 5', '6, 'sub': 1', '30, '(i) at least 50% of Rare hydrogen, and at least 50% of Rare independently a C-Clinear alkyl group; and'}{'sup': 5', '6, 'sub': 1', '30, '(ii) at least 50% of Rare independently a C-Clinear alkyl group, and at least 50% of Rare hydrogen.'}7. The lubricant base stock of claim 1 , wherein among all Rand R claim 1 , at least 50% by mole are independently C-Clinear alkyl groups.8. The lubricant base stock of claim 1 , wherein n is from 50 to 500.9. The lubricant base stock of claim 1 , wherein n is from 2 to 50.10. The lubricant base stock of claim 1 , wherein Rand Rare the same or different and are each independently a C-Clinear alkyl group.11. The lubricant base stock of claim 1 , wherein Rand Rare the same or different and are each independently a C-Clinear alkyl group.12. The lubricant base stock of claim 1 , wherein Ris a C-Clinear alkyl claim 1 , preferably C-Clinear alkyl group.13. The lubricant base stock of claim 1 , wherein Ris an aromatic group.14. The lubricant base stock of claim 6 , having an isotacticity of at least about 60 mol % claim 6 , preferably at least about 75 mol % claim 6 , more preferably at least about 80 mol %.15. The lubricant base stock of which has a rotating pressure vessel oxidation test (RPVOT) break time of at least about 200 minutes.17. The process of claim 16 , wherein the olefin comprises at least about 75 wt % of the compound of formula (F-Ia) where Ris hydrogen.18. ...

PROCESS FOR OBTAINING METHIONINE

The invention relates to a method for crystallizing D,L-methionine from aqueous solutions and/or suspensions containing D,L-methionine and D,L-methionine ammonium salts, having a Met content of 70-180 g/kg, an NH content of 1-5 g/kg, in the presence of a crystallization additive, which comprises a nonionic or anionic surfactant or a mixture of various nonionic or anionic surfactants, in which the temperature of the solution and/or suspension is lowered directly or stepwise from T=85-110° C. to T=30-50° C., so that D,L-methionine precipitates as a solid. 1. A method comprising crystallizing D ,L-methionine from an aqueous solutions and/or suspensions containing solution and/or suspension comprising D ,L-methionine and D ,L-methionine ammonium salt , having a Met content of 70-180 g/kg of solution and/or suspension , an NH content of 1-5 g/kg of solution and/or suspension , in the presence of a crystallization additive , which comprises a nonionic or anionic surfactant ,{'sub': 1', '2, 'wherein a temperature of the solution and/or suspension is lowered directly or stepwise from T=85-110° C. to T=30-50° C., so that D,L-methionine precipitates as a solid.'}2. The method of claim 1 , wherein the crystallization additive comprises at least one anionic surfactant selected from the group consisting of a compound depicted in formulae 1 to 3:{'br': None, 'sup': '1', 'sub': '3', 'R—O—SOM \u2003\u2003(formula 1)'}{'br': None, 'sup': '2', 'sub': 2', 'n', '3, 'R—O—(CH)—SOM \u2003\u2003(formula 2)'}{'br': None, 'sup': '3', 'sub': 2', '4', 'n', '3, 'R—(OCH)—O—SOM \u2003\u2003(formula 3)'}{'sup': 1', '2', '3, 'sub': 8', '20, 'wherein n is an integer from 1 to 10, M is sodium or potassium and R, Rand Rare a linear, branched or cyclic, saturated or unsaturated C- to C-alkyl group or an aryl group.'}3. The method of claim 2 , wherein n is equal to 2 and R claim 2 , Rand Rare linear claim 2 , saturated C- to C-alkyl groups.4. The method of claim 2 , wherein the anionic surfactant ...

DIALKYL SULFIDE, METHOD FOR PRODUCING DIALKYL SULFIDE, EXTREME-PRESSURE ADDITIVE, AND LUBRICATING FLUID COMPOSITION

An object of the present invention is to provide a dialkyl sulfide which can effectively form a metal sulfide film on a metal surface even in a low-temperature environment, has excellent storage stability, and is suitable as an extreme-pressure additive. The present invention provides a dialkyl sulfide represented by general formula (1) below (in the formula, Rand Reach independently represent an alkyl group, and n is an integer), wherein the content of a compound having an n value of 1 in the general formula (1) is 10.0% by mass or less relative to the total amount of compounds represented by the general formula (1) 2. The dialkyl sulfide according to claim 1 , wherein the content of a compound having an n value of 1 in the general formula (1) is 0.5% to 5% by mass relative to the total amount of compounds represented by the general formula (1) claim 1 , the total of the content of a compound having an n value of 2 in the general formula (1) claim 1 , the content of a compound having an n value of 3 claim 1 , and the content of a compound having an n value of 4 is 50.0% to 65.0% by mass relative to the total amount of compounds represented by the general formula (1) claim 1 , and the total of the content of a compound having an n value of 5 in the general formula (1) claim 1 , the content of a compound having an n value of 6 claim 1 , the content of a compound having an n value of 7 claim 1 , and the content of a compound having an n value of 8 is 30.0% to 40.0% by mass relative to the total amount of compounds represented by the general formula (1).3. The dialkyl sulfide according to claim 1 , wherein Rand Rare each a linear alkyl group having 4 to 20 carbon atoms.4. The dialkyl sulfide according to claim 3 , wherein Rand Rare each an octyl group.5. A method for producing a dialkyl sulfide claim 3 , the method comprising a first step of reacting a monosubstituted 1-olefin compound (a) with sulfur (b) in the presence of hydrogen sulfide (c) at a molar ratio [(a)/(b ...

AROMATIC POLYTHIOL COMPOUND FOR OPTICAL MATERIAL

An embodiment relates to an aromatic polythiol compound for optical materials, and the aromatic polythiol compound according to the embodiment contains a phenyl group and a large number of sulfur atoms in its polythiol structure so that a polymerizable composition and an optical material obtained therefrom have excellent optical properties such as high refractive index and low specific gravity, as well as excellent mechanical properties such as low cure shrinkage; thus, they can be advantageously used for producing various plastic optical lenses such as eyeglass lenses and camera lenses. 2. The aromatic polythiol compound according to claim 1 , wherein the molar ratio of the divinylbenzene compound to the bi- or higher-functional aliphatic polythiol is 1:2 to 1:10.3. The aromatic polythiol compound according to claim 1 , which has a number average molecular weight of 500 to 3 claim 1 ,000.4. The aromatic polythiol compound according to claim 1 , wherein the bi- or higher-functional aliphatic polythiol is at least one selected from the group consisting of glycol di(mercaptoacetate) claim 1 , glyceryl dithioglycolate claim 1 , glycol di(3-mercaptopropionate) claim 1 , ethoxylated trimethylolpropane tri(3-mercaptopropionate) claim 1 , trimethylolpropane tri(3-mercaptopropionate) claim 1 , tris[2-(3-mercaptopropionyloxy)ethyl]isocyanurate claim 1 , trimethylolpropane tri(mercaptoacetate) claim 1 , pentaerythritol tetra(3-mercaptopropionate) claim 1 , pentaerythritol tetra(mercaptoacetate) claim 1 , dipentaerythritol hexa(3-mercaptopropionate) claim 1 , 4-mercaptomethyl-1 claim 1 ,8-dimercapto-3 claim 1 ,6-dithiaoctane claim 1 , and 5 claim 1 ,9-dimercaptomethyl-1 claim 1 ,13-dimercapto-3 claim 1 ,7 claim 1 ,11-trithiatridecane.5. A polymerizable composition comprising the aromatic polythiol compound according to and an isocyanate-based compound.6. The polymerizable composition according to claim 5 , which further comprises a polythiol compound different from the ...

METHODS AND COMPOSITIONS FOR PREVENTING DEGRADATION OF DIMETHYL TRISULFIDE

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. 1. A single-phase concentrate composition comprising:at least 10 ppm dimethyl trisulfide (DMTS); andat least 50 wt-% polar organic solvent,wherein the DMTS does not degrade more than 40% within one year of storage, and the concentrate composition is phase-stable in containers.2. The single-phase concentrate composition of claim 1 , wherein the concentrate composition comprises 30 ppm to 5000 ppm DMTS.3. The single-phase concentrate composition of claim 1 , wherein the concentrate composition comprises at least 75 wt-% polar organic solvent.4. The single-phase concentrate composition of claim 1 , wherein the DMTS does not degrade more than 30% over a period of one year of storage.5. The single-phase concentrate composition of claim 1 , wherein the concentrate composition comprises at least 90 wt-% polar organic solvent.6. The single-phase concentrate composition of claim 1 , wherein the concentrate composition comprises less than 10 wt-% water.7. The single-phase concentrate composition of claim 1 , wherein the concentrate composition comprises less than 1 wt-% water.8. The single-phase concentrate composition of claim 1 , further comprising 120 ppm to 120 claim 1 ,000 ppm amine.9. The single-phase concentrate composition of claim 1 , further comprising from 120 ppm to 1 claim 1 ,200 ppm amine.10. The single-phase concentrate composition of claim 1 , wherein the concentrate composition has a pH from 1 to 9.11. A packaged concentrate composition comprising:at least 20 ppm dimethyl trisulfide (DMTS);at ...

光学材料用多硫醇化合物的制造方法及含有该化合物的聚合性组合物

本发明提供一种光学材料用多硫醇化合物的制造方法，所述方法使双(2－羟基乙基)二硫醚含量为0.5重量％以下的2－巯基乙醇和表卤代醇化合物反应，经由多元醇，制造多硫醇化合物。

High stability lubricating oil base stocks and processes for preparing the same

Compounds having the formula (F-I) below are provided herein: (F-I), wherein: R 1 is a C 1 -C 5000 alkyl group; R 2 is (i) a C 4 -C 30 linear alkyl group or (ii) a C 4 -C 5000 branched alkyl having the formula (F-II) below: (F-II), wherein R 5 and R 6 at each occurrence are each independently a hydrogen or a C 1 -C 30 linear alkyl group and n is a positive integer, provided however, among all of R 5 and R 6 , at least one is a C 1 -C 30 linear alkyl group; and R 7 is a hydrogen or a C 1 -C 30 linear alkyl group; R 3 is hydrogen or a C 1 -C 5000 alkyl group; and R 4 is a C 1 -C 50 alkyl group or an aromatic group. Processes for preparing compounds of formula (F-I) as well as base stock and lubricant compositions containing compounds of formula (F-I) are also provided.

Dimethyldisulfide-base composite

FIELD: organic chemistry. SUBSTANCE: invention relates to dimethylsulfide (DMDS)-base composite. DMDS is used as the parent addition in vapor- -phase cracking and in the sulfonation reaction of catalysts. To improve product odor caused by the presence of impurities the invention proposes DMDS-base composite comprising at least 95% of DMDS, less 500 mln. p. p. of methylmercaptane, less 100 mln. p. p. of dimethylsulfide and up to 1% of at least one perfume that represents ester of the general formula R 1 -CO 2 R 2 wherein R 1 represents possibly unsaturated, linear or branched hydrocarbon radical comprising from 1 to 4 carbon atoms; R 2 represents possibly unsaturated, linear, branched or cyclic hydrocarbon radical comprising from 2 to 8 carbon atoms. EFFECT: improved and valuable properties of composite. 8 cl, 2 dwg, 1 tbl, 11 ex зэгегсс пы сэ сульфировании улучшения запаха продукта, обусловленного (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 219 168. С 07 С 321/14, 319/24, 319/26 (51) МПК? 13) С2 (21), (22) Заявка: 99116306/04, 28.07.1999 (24) Дата начала действия патента: 28.07.1999 (30) Приоритет: 31.07.1998 ЕК 98 09864 (43) Дата публикации заявки: 20.05.2001 (46) Дата публикации: 20.12.2003 (56) Ссылки: ЗИ 441706, А, 15.12.1974. ЦЗ 5559211, А, 24.09.1996. $, 5218141, А, 08.06.1993. (98) Адрес для переписки: 193036, Санкт-Петербург, а/я 24, "НЕВИНПАТ", пат.пов. Поликарпову А.В. (72) Изобретатель: ФРЕМИ Жорж (ЕК) (73) Патентообладатель: ЭЛЬФ АТОШЕМ С.А. (ЕКВ) (74) Патентный поверенный: Поликарпов Александр Викторович (54) СОСТАВ НА ОСНОВЕ ДИМЕТИЛДИСУЛЬФИДА (57) Изобретение относится к составу на основе диметилдисульфида (ДМДС). ДМДС используется в качестве исходной добавки при парофазном крекинге и при катализаторов. С целью присутствием примесей, предложен состав на основе ДМДС, включающий по массе по меньшей мере 95% ДМДС, менее 500 млн.ч метилмеркаптана, менее 100 млн. ч диметилсульфида и до 1% по меньшей мере одной отдушки, сложный эфир общей ...

Polythiol compound for optical use, production method of the same, polymerization compound and optical lens therefrom

본 발명은 높은 굴절율 및 투명성 그리고 우수한 내충격성이 요구되는 플라스틱 렌즈 등 광학용으로 적합하게 사용할 수 있는 폴리티올 화합물과 제조방법 등에 관한 것으로, 굴절율과 아베수가 높아 광학적 물성이 좋을 뿐만 아니라 내열성과 내충격성 등 기계적 성질도 좋고 동시에 무색투명하고, 염색이 용이한 렌즈 등을 제조할 수 있는 화합물 등을 제공하는 것이 목적이다. 하기 화학식 1 또는 화학식 2로 표시되는 광학용 폴리티올 화합물. [화학식 1] [화학식 2] 폴리티올 화합물, 광학용, 플라스틱 렌즈, 굴절율, 아베수, 내충격성

Method of producing dimethylsulfide

Изобретение касаетс  замещенных сульфидов, в частности получени  ди- метилсульфида, используемого либо в качестве одоранта, либо дл  синтеза диметилсульфоксида. Цель - повышение производительности процесса. Его ведут каталитическим разложением метип- меркаптана при скорости его годами 70-630 г/моль-л катализатора в 1 ч. В качестве катализатора используют У-А1203, промотированный 0,9 8,6 мас.% оксида магни . Процесс ведут при 350-410°С. Эти услови , повышают производительность процесса без снижени  выхода целевого продукта The invention relates to substituted sulphides, in particular the preparation of dimethyl sulphide, used either as an odorant or for the synthesis of dimethyl sulfoxide. The goal is to increase the productivity of the process. It is carried out by the catalytic decomposition of metipromcaptan at a rate of 70-630 g / mol-l of catalyst per year for 1 h. U-A1203 promoted with 0.9 8.6 wt.% Magnesium oxide is used as a catalyst. The process is carried out at 350-410 ° C. These conditions increase the productivity of the process without reducing the yield of the target product.

Thio-polythiol, preparation method and application in transparent polyurethane material

本发明公开了一种硫代多元硫醇的制备方法及其在透明聚氨酯制备中的应用，首先，通过一种较简单且污染较小的方法得到含硫量较高，折射率较大的硫代多元硫醇，然后通过合适的方法与扩链剂、催化剂、抗氧剂等其他助剂混合，加入IPDI，搅拌脱泡后得到透明聚氨酯。本发明的方法简单，原料易得，S单体制备过程中不使用任何有机试剂，大大减轻对环境和人体的危害，制得的聚氨酯透光率高、折射率高、硬度大、化学性质较稳定。

Method for making dimethyl disulphide compositions having a masked smell

A composition based on dimethyl disulphide (DMDS) with a masked smell according to the invention comprises, by weight, at least 95% of DMDS, less than 500 ppm of methyl mercaptan, less than 100 ppm of dimethyl sulphide and up to 1% of at least one odor-masking agent.

Patent FR2029916A5

DIMETHYLDISULPHIDE COMPOSITIONS WITH MASKED ODOR

New sulfur hemisepulcrands and their use for the extraction of metals, in particular rhodium.

NOVEL SULFIDE COMPOUNDS, THEIR PREPARATION AND THEIR USE AS LUBRICATING OIL ADDITIVES.

Novel sulphurized compounds, their preparation and use. The compounds are based on the general formula {[R-Sx-(CH2)n-]z CH3-z-(CH2)p-}2 Sy, in which R is a monovalent hydrocarbon radical having 1 to 30 carbon atoms, optionally functionalized; x is a number equal to or greater than 1; z is an integer equal to 1 or 2; when z = 1, n is an integer from 0 to 3 and p is an integer from 0 to 3, with n + p being an integer from 0 to 3; when z = 2, n is an integer from 1 to 3 and p is an integer from 0 to 3; and y is a number equal to or greater than 1, at least one of the numbers x and y being strictly greatly than 1. The sulphurized compounds can be used as extreme pressure or wear prevention additives in lubricating oils, in particular in oils for gear systems and those used in working metal.

NOVEL SULFIDE COMPOUNDS, THEIR PREPARATION AND THEIR USE AS LUBRICANT OIL ADDITIVES.

Odour masked compositions based on dimethylsulfure

Method for producing polythiol compound for optical material and polymerizable composition containing same

Method for preparing dimethyl cyanodithioiminocarbonate

本发明公开一种氰胺基荒酸二甲酯的制备方法，属于精细化工技术领域。该方法首先进行成盐反应，将石灰氮和碳酸钠先后分散溶解在水中，并滴加二硫化碳，生成氰胺基荒酸钠盐的混合液，将述氰胺基荒酸钠盐的混合液趁热过滤，滤饼用适量热水充分洗涤，合并滤液得到氰胺基荒酸钠盐的水溶液；然后进行甲基化反应，将丙酮或异丙醇加入到氰胺基荒酸钠盐的水溶液中，并滴加碳酸二甲酯，反应生成氰胺基荒酸二甲酯粗产品，反应结束后再次加入丙酮或异丙醇，在‑20℃低温下冷冻结晶，待固体析出后趁冷过滤，洗涤干燥后制得氰氨基荒酸二甲酯。本发明具有原料价廉易得、无污染、操作工艺简便及适用于工业化生产等技术特点。

Method for producing polythiol compound for optical material and polymerizable composition containing same

Disclosed is a method for producing a polythiol compound for optical materials, wherein a 2-mercaptoethanol having a bis(2-hydroxyethyl)disulfide content of not more than 0.5% by weight is reacted with an epihalohydrin compound, thereby producing a polythiol compound via a polyalcohol.

Dimethylsulphide composition with masked odour

How to synthesize lipids

본원은 siRNA를 비롯한 치료 분자의 표적화 및 활성 증진을 위한 지용성 화합물의 합성에 유용한 화학식 I의 지질의 합성 방법을 제공한다.

Cyanoalkoxy-substituted tetrasubstituted olefin derivatives and synthesis thereof

本发明公开了一种合成具有潜在生物活性的氰烷氧基取代的四取代烯烃衍生物的方法。以易制备、具有结构多样性和多反应中心的3,3‑二烷硫基‑2‑丙烯‑1‑酮和环丁酮肟酯为原料，通过环丁酮肟酯产生自由基对烯烃加成，一步生成氰烷氧基取代的四取代烯烃衍生物。该方法原料易得、操作简便，合成反应条件温和、反应效率高，其官能团具有多样性。

Methods and compositions for preventing degradation of dimethyl trisulfide

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.

Procede d'obtention de mercapto methyl sulfures

Compositions based on dimethyl disulphide with a masked smell

Dimethyldisulphide compositions with masked odour

Invenţia se referă la o compoziţie pe bază de dimetildisulfură (DMDS) cu miros mascat, care conţine, în greutate, cel puţin 95% DMDS, mai puţin de 500 ppm metilmercaptan, mai puţin de 100 ppm dimetilsulfură şi până la 1% cel puţin un agent care maschează mirosul.

ALCOHIL-1-ALCELLIN DISULFETS AND THE COMPOSITIONS THAT CONTAIN THEM

Low viscosity polythiol and method therefor

A method and composition for decreasing the viscosity of mercaptan terminated polymers. The method involves adding thiol terminated trithio-orthoformate polycondensates to the mercaptan terminated polymer to achieve desired decreases in viscosities without adversely affecting other physical properties. The polycondensates have the formula: (HS-R-S-)2CH-S-R'-S[-CH(-S-R''-S)2-]n(H)x, wherein R, R', and R'' are alkyl, aryl, thioether, or ether, either the same or different; n is 0-10; and x is n + 1.

Process for obtaining mercaptomethyl sulfides

Smell hidden dimethyldisulphide-based compositions

Une composition à base de diméthyldisulfure (DMDS) à odeur masquée selon l'invention contient en poids au moins 95 % de DMDS, moins de 500 ppm de méthylmercaptan, moins de 100 ppm de diméthylsulfure et jusqu'à 1 % d'au moins un agent masquant d'odeur. A composition based on dimethyldisulphide (DMDS) with masked odor according to the invention contains by weight at least 95% of DMDS, less than 500 ppm of methyl mercaptan, less than 100 ppm of dimethylsulphide and up to 1% of at least one odor masking agent.

New sulfured compounds, their preparation and their use as additives for lubricating oils

Novel sulfurized compounds, their preparation and use. The compounds are based on the general formula {[R-S.sub.x --(CH.sub.2).sub.n --].sub.z CH.sub.3-z --(CH.sub.2).sub.p --} 2 S y , in which R is a monovalent hydrocarbon radical having 1 to 30 carbon atoms, optionally functionalized; x is a number equal to or greater than 1; z is an integer equal to 1 or 2; when z=1, n is an integer from 0 to 3 and p is an integer from 0 to 3, with n+p being an integer from 0 to 3; when z=2, n is an integer from 1 to 3 and p is an integer from 0 to 3; and y is a number equal to or greater than 1, at least one of the numbers x and y being strictly greater than 1. The sulphurized compounds can be used as extreme pressure or wear prevention additives in lubricating oils, in particular in oils for gear systems and those used in working metal.

Process for producing polythiol compound for optical materials, and polymerizable composition containing polythiol compound

Provided is a process for producing a polythiol compound for an optical material, the method includes reacting 2-mercaptoethanol with an epihalohydrin compound to give polyalcohol, and preparing a polythiol compound through the polyalcohol, wherein a content of bis(2-hydroxyethyl)disulfide in the 2-mercaptoethanol is 0.5 wt % or less.

Urea adducts of organic sulfur

COMPOSITION BASED ON DIMETHYL DISSULFURET WITH MASKED ODOR

NEW SULFURATED COMPOUNDS, THEIR PREPARATION AND THEIR USE AS ADDITIVES FOR LUBRICATING OILS.

SE DESCRIBEN NUEVOS COMPUESTOS SULFURADOS, SU PREPARACION Y SU UTILIZACION. RESPONDEN A LA FORMULA GENERAL: {[R-SX-(CH2)N-[ZCH3Z-(CH2)P-}2SY EN LA QUE R REPRESENTA UN RADICAL HIDROCARBONADO MONOVALENTE DE 1 A 30 ATOMOS DE CARBONO, EVENTUALMENTE FUNCIONALIZADO; X ES UN NUMERO IGUAL O SUPERIOR A 1; Z ES UN NUMERO ENTERO IGUAL A 1 O 2; CUANDO Z = 1, N ES UN NUMERO ENTERO DE 0 A 3 Y P ES UN NUMERO ENTERO DE 0 A 3, CON N + P NUMERO ENTERO DE 0 A 3; CUANDO Z = 2, N ES UN NUMERO ENTERO DE 1 A 3 Y P UN NUMERO ENTERO DE 0 A 3; E Y ES UN NUMERO IGUAL O SUPERIOR A 1, SIENDO AL MENOS UNO DE LOS NUMEROS X E Y ESTRICTAMENTE SUPERIOR A 1. ESTOS COMPUESTOS PUEDEN UTILIZARSE COMO ADITIVOS DE EXTREMA PRESION Y ANTIDESGASTE EN LOS ACEITES LUBRICANTES, EN PARTICULAR LOS ACEITES DE ENGRANAJES Y LOS ACEITES PARA EL TRABAJO DE LOS METALES.

Compositions based on dimethyl disulphide with a masked smell.

Smell hidden dimethyldisulphide-based compositions

Une composition à base de diméthyldisulfure (DMDS) à odeur masquée selon l'invention contient en poids au moins 955 de DMDS, moins de 500 ppm de méthylmercaptan, moins de 100 ppm de diméthylsulfure et jusqu'à 1% d'au moins un agent masquant d'odeur. Cette composition est utilisable dans des applications telles que la sulfuration de catalyseurs ou en tant qu'additif de charge pour le vapocraquage.

Dimethyl disulphide based composition with masked odour and method of obtaining same

The normal strong aggressive odor of dimethyldisulfide is reduced by limiting the content of methylmercaptan to less than 500 ppm and of dimethylsulfide to less than 100 ppm, and incorporating up to 1 % of at least one odor masking agent. A composition based on dimethyldisulfide CH3SSCH3 (DMDS) containing (by wt.) at least 95 % DMDS, less than 500 ppm (preferably less than 200 ppm) methylmercaptan, less than 100 ppm (preferably less than 50 ppm) dimethylsulfide and up to 1 % ( preferably 0.1-0.5 % and especially about 0.2 %) of at least one odor masking agent.

Compounds based on dimethyl disulfide and odor hidden.

Odour masked compositions based on dimethylsulfure

Dimetil-szulfid alapú, elfedett szagú kompozíciók

Atalálmány szerinti maszkírőzőtt szagú, dimetil-diszűlfid-alapúkőmpőzíció tömeg szerint legalább 95% DMDS-t, kevesebb mint 500ppmmetil-merkaptánt, kevesebb mint 100ppm dimetil-szűlfidőt és legfeljebb1%, legalább egy szagmaszkírőzó szert tartalmaz. ŕ

一种用于二甲基二硫醚生产的反应釜

本发明公开了一种用于二甲基二硫醚生产的反应釜，包括主筒、顶盖、蒸馏筒和搅拌板，所述主筒的圆周外壁设置有支撑机构，且主筒的顶部圆周外壁固定连接有安装环，且顶盖的底部外壁与安装环的顶部外壁相接触，安装环的底部圆周外壁设置有加固机构，所述顶盖的顶部外壁中间位置固定连接有等距离分布的多个竖杆，且竖杆的顶部外壁之间固定连接有顶筒，顶筒的底部内壁固定连接有驱动电机，驱动电机的输出轴一端固定连接有旋转轴。本发明第一进气管对螺纹管中充入高温蒸汽时，可对内筒进行加热，从而促进内筒中反应物的混合反应，进水管在对蒸馏筒中灌水时，可对气体状的二硫醚进行蒸馏，实现了二硫醚的制备效果。

Proceso para la sintetizacion de lipidos.

La presente solicitud proporciona procesos para sintetizar los lípidos de la fórmula (ver Fórmula) I útil en la síntesis de compuestos solubles en grasas para que tengan como objetivo y mejoren la actividad de las moléculas terapéuticas, incluido el ARNsi.

Process for the preparation of compounds with at least one alkylene group and at least one thiol or thiolate group

A process synthesizes a compound with at least one alkylene group and at least one thiol or thiolate group. The process involves reacting a compound with at least one five-membered cyclic monothiocarbonate group with a starter selected from a compound with at least one thiol group, from a compound with at least one hydroxy group, or from a basic inorganic composed; to obtain a compound with at least one alkylene group and at least one thiol or thiolate group and carbon dioxide.

적어도 하나의 알킬렌기 및 적어도 하나의 티올 또는 티올레이트기를 갖는 화합물의 제조 방법

적어도 하나의 5-원 시클릭 모노티오카르보네이트 기를 갖는 화합물을 적어도 하나의 티올 기를 갖는 화합물, 적어도 하나의 히드록시 기를 갖는 화합물 또는 염기성 무기 화합물로부터 선택된 출발물질과 반응시켜 적어도 하나의 알킬렌 기 및 적어도 하나의 티올 또는 티올레이트 기를 갖는 화합물 및 이산화탄소를 수득하는, 적어도 하나의 알킬렌 기 및 적어도 하나의 티올 또는 티올레이트 기를 갖는 화합물의 합성 방법이 제공된다.

Process for the preparation of compounds with at least one alkylene group and at least one thiol or thiolate group

A process synthesizes a compound with at least one alkylene group and at least one thiol or thiolate group. The process involves reacting a compound with at least one five-membered cyclic monothiocarbonate group with a starter selected from a compound with at least one thiol group, from a compound with at least one hydroxy group, or from a basic inorganic composed; to obtain a compound with at least one alkylene group and at least one thiol or thiolate group and carbon dioxide.

一种用于二甲基二硫醚生产的反应釜

本发明公开了一种用于二甲基二硫醚生产的反应釜，包括主筒、顶盖、蒸馏筒和搅拌板，所述主筒的圆周外壁设置有支撑机构，且主筒的顶部圆周外壁固定连接有安装环，且顶盖的底部外壁与安装环的顶部外壁相接触，安装环的底部圆周外壁设置有加固机构，所述顶盖的顶部外壁中间位置固定连接有等距离分布的多个竖杆，且竖杆的顶部外壁之间固定连接有顶筒，顶筒的底部内壁固定连接有驱动电机，驱动电机的输出轴一端固定连接有旋转轴。本发明第一进气管对螺纹管中充入高温蒸汽时，可对内筒进行加热，从而促进内筒中反应物的混合反应，进水管在对蒸馏筒中灌水时，可对气体状的二硫醚进行蒸馏，实现了二硫醚的制备效果。

Process for synthesizing lipids

Geruchsmaskierte dimethylsulfid-zusammensetzung

Dithiols a groupements thioethers

具有至少一个亚烷基和至少一个硫醇基或巯基的化合物的制备方法

本发明提供一种合成具有至少一个亚烷基和至少一个硫醇基或巯基的化合物的方法，其中使具有至少一个五元环状单硫代碳酸酯基团的化合物与选自具有至少一个硫醇基团的化合物、具有至少一个羟基的化合物或碱性无机化合物的引物反应以获得具有至少一个亚烷基和至少一个硫醇基或巯基的化合物和二氧化碳。

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Nouveaux dithiols a groupements thioethers

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少なくとも１つのアルキレン基及び少なくとも１つのチオール基又はチオレート基を有する化合物を調製する方法

一种二异戊基硫醚的合成工艺

本发明公开了一种二异戊基硫醚的合成工艺，在反应釜中将无水硫化钠溶于热水中再加入无水乙醇并加热搅拌，当混合物进行回流反应时缓慢滴加溴代异戊烷，所得反应混合物上层为粗制二异戊基硫醚，将粗制二异戊基硫醚反复洗涤后进行反复减压蒸馏提纯，得到高纯度的二异戊基硫醚，整个生产过程流程短、劳动强度小、能源消耗少、生产成本低、生产周期短，得到的二异戊基硫醚纯度可达99.5％，收率为80‑85％，萃取钯的效率可提升到99.5％以上。

Neue cyclische Sulfone

用于合成脂质的方法

本申请提供了用于合成式I的脂质的方法，所述脂质可用于合成用于靶向和增强治疗分子的活性的脂溶性化合物，所述治疗分子包括siRNA。

一种用于二甲基二硫醚生产的反应釜

本发明公开了一种用于二甲基二硫醚生产的反应釜，包括主筒、顶盖、蒸馏筒和搅拌板，所述主筒的圆周外壁设置有支撑机构，且主筒的顶部圆周外壁固定连接有安装环，且顶盖的底部外壁与安装环的顶部外壁相接触，安装环的底部圆周外壁设置有加固机构，所述顶盖的顶部外壁中间位置固定连接有等距离分布的多个竖杆，且竖杆的顶部外壁之间固定连接有顶筒，顶筒的底部内壁固定连接有驱动电机，驱动电机的输出轴一端固定连接有旋转轴。本发明第一进气管对螺纹管中充入高温蒸汽时，可对内筒进行加热，从而促进内筒中反应物的混合反应，进水管在对蒸馏筒中灌水时，可对气体状的二硫醚进行蒸馏，实现了二硫醚的制备效果。

플라스틱 안경렌즈용 폴리치올 화합물

본 발명은 내 충격성, 경량성, 성형성, 염색성, 투명성등의 광학특성이 우수하면서도 높은 굴절율과 아베수를 가지며, 특히, 중합시 렌즈 가장자리에 기포 발생이 없으면서, 내열성이 아주 우수한 성분(1) (상기 식에서 n=1-3의 정수이고, 또, m=1-3의 정수이며, n+m은 4의 정수이다.) 로 표시되는 플라스틱 안경렌즈 제조용 폴리티올 화합물을 제시하는데 있다.

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具有至少一个亚烷基和至少一个硫醇基或巯基的化合物的制备方法

本发明提供一种合成具有至少一个亚烷基和至少一个硫醇基或巯基的化合物的方法，其中使具有至少一个五元环状单硫代碳酸酯基团的化合物与选自具有至少一个硫醇基团的化合物、具有至少一个羟基的化合物或碱性无机化合物的引物反应以获得具有至少一个亚烷基和至少一个硫醇基或巯基的化合物和二氧化碳。

用于防止二甲基三硫醚降解的方法和组合物

本公开提供了用于抑制溶液中二甲基三硫醚(DMTS)降解的方法和组合物。浓缩物组合物包括DMTS和极性无机或有机溶剂。所述组合物可在容器中在54℃下存储至少2周或在室温下存储至少一年，并且少于50％的DMTS降解。所述浓缩物组合物可以稀释使用，并与其它组分组合以形成各种溶液。

氰烷氧基取代的四取代烯烃衍生物及其合成

本发明公开了一种合成具有潜在生物活性的氰烷氧基取代的四取代烯烃衍生物的方法。以易制备、具有结构多样性和多反应中心的3,3‑二烷硫基‑2‑丙烯‑1‑酮和环丁酮肟酯为原料，通过环丁酮肟酯产生自由基对烯烃加成，一步生成氰烷氧基取代的四取代烯烃衍生物。该方法原料易得、操作简便，合成反应条件温和、反应效率高，其官能团具有多样性。

一种多巯基季戊四硫醇衍生物的制备方法

本发明涉及含硫化合物技术领域，具体涉及一种多巯基季戊四硫醇衍生物的制备方法。利用本发明方法制备的硫醇化合物具有较高的硫含量，保证了产品的高折射率，同时具有四个支链，与异氰酸酯固化成型时生成较高的立体网状结构，可用于制备高折射率树脂单体，具有较高的力学及光学性能。

高稳定性润滑油基础油料及其制备方法

本文提供了具有下式(F‑I)的化合物： 其中：R 1 是C 1 ‑C 5000 烷基；R 2 是(i)C 4 ‑C 30 直链烷基或(ii)具有下式(F‑II)的C 4 ‑C 5000 支链烷基： 其中R 5 和R 6 在每次出现时各自独立地为氢或C 1 ‑C 30 直链烷基，和n为正整数，但是条件是，在所有R 5 和R 6 中，至少一者为C 1 ‑C 30 直链烷基；和R 7 为氢或C 1 ‑C 30 直链烷基；R 3 是氢或C 1 ‑C 5000 烷基；和R 4 为C 1 ‑C 50 烷基基团或芳族基团。还提供了制备式(F‑I)化合物的方法以及含有式(F‑I)化合物的基础油料和润滑剂组合物。

具有至少一个亚烷基和至少一个硫醇基或巯基的化合物的制备方法

本发明提供一种合成具有至少一个亚烷基和至少一个硫醇基或巯基的化合物的方法，其中使具有至少一个五元环状单硫代碳酸酯基团的化合物与选自具有至少一个硫醇基团的化合物、具有至少一个羟基的化合物或碱性无机化合物的引物反应以获得具有至少一个亚烷基和至少一个硫醇基或巯基的化合物和二氧化碳。