IN2014DN09747A - - Google Patents

Info

Publication number
IN2014DN09747A
IN2014DN09747A IN9747DEN2014A IN2014DN09747A IN 2014DN09747 A IN2014DN09747 A IN 2014DN09747A IN 9747DEN2014 A IN9747DEN2014 A IN 9747DEN2014A IN 2014DN09747 A IN2014DN09747 A IN 2014DN09747A
Authority
IN
India
Prior art keywords
compound
temperature
order
formula
isothiuronium salt
Prior art date
Application number
Inventor
Masaru Kawaguchi
Takeshi Nishimura
Original Assignee
Mitsui Chemicals Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Chemicals Inc filed Critical Mitsui Chemicals Inc
Publication of IN2014DN09747A publication Critical patent/IN2014DN09747A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/02—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of thiols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3855—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur
    • C08G18/3876—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing mercapto groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/02—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of thiols
    • C07C319/08—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of thiols by replacement of hydroxy groups or etherified or esterified hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/14—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/14—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides
    • C07C319/20—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides by reactions not involving the formation of sulfide groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C335/00—Thioureas, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C335/30—Isothioureas
    • C07C335/32—Isothioureas having sulfur atoms of isothiourea groups bound to acyclic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C381/00—Compounds containing carbon and sulfur and having functional groups not covered by groups C07C301/00 - C07C337/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
    • C08G18/7628—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring containing at least one isocyanate or isothiocyanate group linked to the aromatic ring by means of an aliphatic group
    • C08G18/7642—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring containing at least one isocyanate or isothiocyanate group linked to the aromatic ring by means of an aliphatic group containing at least two isocyanate or isothiocyanate groups linked to the aromatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate groups, e.g. xylylene diisocyanate or homologues substituted on the aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

This production method for a polythiol compound comprises: a step in which 2- mercaptoethanol and an epihalohydrin compound represented by general formula (1) are reacted at a temperature of 10- 50 °C in order to obtain a polyalcohol compound that is represented by formula (2); a step in which the obtained polyalcohol compound and thiourea are reacted in the presence of hydrogen chloride in order to obtain an isothiuronium salt; a step in which the temperature of a reaction solution containing the obtained isothiuronium salt is maintained at a temperature of 15- 60 °C and aqueous ammonia is added to said reaction solution within 80 minutes the isothiuronium salt is hydrolyzed, and a polythioi compound represented by formula (5) is obtained; and a step in which hydrochloric acid having a concentration of 25- 36% is added to a solution containing the obtained polythmol compound and washing is carried out at a temperature of 10- 50 °C in order to purify the polythiol compound.
IN9747DEN2014 2012-08-14 2014-11-18 IN2014DN09747A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012179896 2012-08-14
PCT/JP2013/001207 WO2014027427A1 (en) 2012-08-14 2013-02-28 Production method for polythiol compound, polymerizable composition for optical material and use therefor

Publications (1)

Publication Number Publication Date
IN2014DN09747A true IN2014DN09747A (en) 2015-07-31

Family

ID=50685489

Family Applications (2)

Application Number Title Priority Date Filing Date
IN9746DEN2014 IN2014DN09746A (en) 2012-08-14 2013-02-28
IN9747DEN2014 IN2014DN09747A (en) 2012-08-14 2014-11-18

Family Applications Before (1)

Application Number Title Priority Date Filing Date
IN9746DEN2014 IN2014DN09746A (en) 2012-08-14 2013-02-28

Country Status (7)

Country Link
US (4) US9181179B2 (en)
EP (4) EP2845847B1 (en)
KR (4) KR20140141723A (en)
CN (4) CN105906773B (en)
BR (2) BR112014030076A2 (en)
IN (2) IN2014DN09746A (en)
WO (2) WO2014027428A1 (en)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5373226B1 (en) 2012-08-14 2013-12-18 三井化学株式会社 Polythiol composition, polymerizable composition for optical material and use thereof
EP2966105A4 (en) 2013-03-04 2016-10-12 Mitsubishi Gas Chemical Co Composition for optical material and optical material obtained therefrom
EP2801586B1 (en) 2013-05-07 2016-04-13 Bruno Bock Chemische Fabrik GmbH & Co. KG Casting resin on a polythiourethane basis with high tensile strength and low specific weight
WO2015064548A1 (en) 2013-11-01 2015-05-07 三菱瓦斯化学株式会社 Polythiol compound and method for producing same
TWI699389B (en) * 2014-07-18 2020-07-21 日商三菱瓦斯化學股份有限公司 Polythiol composition and manufacturing method thereof
CN104402783B (en) * 2014-12-15 2015-08-12 黄河三角洲京博化工研究院有限公司 A kind of preparation method of sulfhydryl compound
JPWO2017175407A1 (en) * 2016-04-06 2019-02-14 ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ Manufacturing method of optical member
CN105693575B (en) * 2016-04-08 2018-06-29 佛山汉维科技有限公司 A kind of method and apparatus for isolating and purifying multi-thiol
CN105949096B (en) * 2016-05-19 2018-03-02 湖北鼎龙控股股份有限公司 The post-processing approach of optical glasses sheet material, refined multi-thiol and multi-thiol crude product
EP3480185B1 (en) * 2016-06-30 2021-04-14 Hoya Lens Thailand Ltd. Method for preparing polythiol compound, method for preparing curable composition, and method for producing cured product
KR20180112864A (en) * 2016-06-30 2018-10-12 호야 렌즈 타일랜드 리미티드 For producing cured product, cured product and spectacle lens substrate
EP3486272B1 (en) 2016-07-14 2021-04-28 SKC Co., Ltd. Aromatic polythiol compound for optical material
JP6632493B2 (en) 2016-08-05 2020-01-22 ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ Method for producing polythiol compound, method for producing curable composition, and method for producing cured product
JP6633990B2 (en) * 2016-08-08 2020-01-22 ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ Method for producing polythiol compound, method for producing curable composition, and method for producing cured product
KR101885879B1 (en) * 2016-08-30 2018-08-07 에스케이씨 주식회사 Polythiol composition used in the manufacture of an optical material and preparation method thereof
KR101971110B1 (en) * 2016-08-30 2019-04-22 에스케이씨 주식회사 Method for preparing polythiol compound used in the manufacture of an optical material
US10365958B2 (en) * 2016-09-13 2019-07-30 Hewlett Packard Enterprise Development Lp Storage drive management to fail a storage drive based on adjustable failure criteria
JP6851762B2 (en) * 2016-09-30 2021-03-31 ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ Method for manufacturing polythiol compounds for optical materials
JP2018058922A (en) * 2016-09-30 2018-04-12 ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ Production method of optical material
CN106831511B (en) * 2017-01-24 2018-05-25 郯城博化化工科技有限公司 A kind of preparation method of multi-thiol compound
KR101893558B1 (en) * 2017-02-03 2018-08-30 에스케이씨 주식회사 Polymerizable composition for plastic lens
CN113372250B (en) * 2017-02-15 2023-12-08 Ks试验研究株式会社 Polythiol compound, process for producing the same, transparent urethane resin produced from the same, and optical body
JP6846507B2 (en) * 2017-03-24 2021-03-24 三井化学株式会社 Methods for Producing Polythiol Compounds, Polymerizable Compositions and Their Applications
KR101902974B1 (en) 2017-03-31 2018-10-02 에스케이씨 주식회사 Dehydration method of polythiol compound
CN107235876B (en) * 2017-06-30 2019-01-18 山东益丰生化环保股份有限公司 A kind of post-processing approach of more sulfhydryl compound crude products
KR101996981B1 (en) * 2017-10-18 2019-07-05 에스케이씨 주식회사 Polymerizable composition for plastic lens
CN107721892B (en) * 2017-10-31 2020-10-23 淮阴师范学院 Thio-polythiol, preparation method and application in transparent polyurethane material
JP6797855B2 (en) * 2018-03-29 2020-12-09 ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ A method for producing a polythiol compound, a method for producing a curable composition, and a method for producing a cured product.
JP6797856B2 (en) * 2018-03-29 2020-12-09 ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ A method for producing a polythiol compound, a method for producing a curable composition, and a method for producing a cured product.
CN111868025B (en) * 2018-03-30 2023-12-12 三井化学株式会社 Method for producing organic mercapto compound or intermediate thereof, (poly) thiol component, polymerizable composition for optical material, molded article, optical material, and lens
KR102034214B1 (en) * 2018-04-25 2019-10-18 에스케이씨 주식회사 Method for preparing polythiol having improved storage stability
KR102036246B1 (en) * 2018-07-04 2019-10-24 에스케이씨 주식회사 Preparation method of high-quality polythiol
CN110305049B (en) * 2019-07-08 2021-05-28 山东益丰生化环保股份有限公司 Method for producing low-chroma polythiol compound
WO2021010392A1 (en) 2019-07-17 2021-01-21 三井化学株式会社 Polythiol composition and application thereof
CN110835409B (en) * 2019-12-03 2020-08-28 山东益丰生化环保股份有限公司 Method for producing polythiol by using microchannel reactor through continuous reaction
JP7059343B2 (en) * 2019-12-13 2022-04-25 エスケイシー・カンパニー・リミテッド Method for preparing polythiol composition
KR20210075617A (en) * 2019-12-13 2021-06-23 에스케이씨 주식회사 Manufacturing method of polythiol composition
JP7437932B2 (en) 2019-12-27 2024-02-26 三井化学株式会社 Wastewater treatment method
CN116874734A (en) 2020-01-27 2023-10-13 三井化学株式会社 Polymerizable composition for optical material, polymerizable prepolymer composition for optical material, cured product, and method for producing optical material
CN116178654A (en) 2020-01-27 2023-05-30 三井化学株式会社 Polymerizable composition for optical material, polymerizable prepolymer composition for optical material, cured product, and method for producing optical material
CN115260427A (en) * 2020-02-05 2022-11-01 三井化学株式会社 Method for producing polyamine compound and use thereof
EP4101876A4 (en) 2020-03-10 2024-04-03 Mitsui Chemicals, Inc. Polymerizable composition for optical material, polymerizable prepolymer composition for optical material, cured object, and method for producing optical material
KR102122703B1 (en) 2020-04-09 2020-06-26 주식회사 대원에프엔씨 Manufacturing method of polythiol compound and optical material containing it
KR102564990B1 (en) * 2020-12-01 2023-08-07 에스케이씨 주식회사 Polythiol composition and polymerizable composition including the same
EP4209525A1 (en) * 2020-09-01 2023-07-12 SKC Co., Ltd. Polythiol composition, optical composition, and optical products
KR20220033890A (en) * 2020-09-10 2022-03-17 에스케이씨 주식회사 Polythiol composition and optical polymerizable composition including the same
CN112358613B (en) * 2020-10-27 2022-09-13 益丰新材料股份有限公司 Polythiol for optical resin and preparation method and application thereof
CN114765982B (en) 2020-11-13 2024-06-28 三井化学株式会社 Polythiol composition, polymerizable composition, resin, molded article, optical material, and lens
CN116157721A (en) 2020-12-25 2023-05-23 三井化学株式会社 Polythiol composition, polymerizable composition, resin, molded article, optical material, and lens
JPWO2023008528A1 (en) 2021-07-30 2023-02-02
CN118159876A (en) 2021-12-24 2024-06-07 三井化学株式会社 Method for producing optical member and cured product
WO2024058014A1 (en) 2022-09-14 2024-03-21 三井化学株式会社 Polythiol composition, polymerizable composition, resin, molded body, optical material, and lens
WO2024080383A1 (en) * 2022-10-14 2024-04-18 三井化学株式会社 Polythiol composition, polymerizable composition, resin, molded body, optical material and lens

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2621991B2 (en) 1988-12-22 1997-06-18 三井東圧化学株式会社 Mercapto compound and method for producing the same
US5087758A (en) 1988-12-22 1992-02-11 Mitsui Toatsu Chemicals, Inc. Mercapto compound, a high refractive index resin and lens and a process for preparing them
US5191055A (en) 1988-12-22 1993-03-02 Mitsui Toatsu Chemicals, Inc. Mercapto compound, a high refractive index resin and lens and a process for preparing them
US5608115A (en) * 1994-01-26 1997-03-04 Mitsui Toatsu Chemicals, Inc. Polythiol useful for preparing sulfur-containing urethane-based resin and process for producing the same
JP4426017B2 (en) * 1999-07-27 2010-03-03 三井化学株式会社 Method for producing organic mercapto compound
CN1171924C (en) * 2002-11-05 2004-10-20 浙江大学 Method for preparing optical plastic of polythiocarbamic acid ether
CN101180553B (en) * 2006-01-31 2011-12-14 什里兰工业研究学院 An improved lens of diethyle glycol bis allyl carbonate CR-39 and a process for preparation thereof
CN101421232A (en) 2006-04-19 2009-04-29 三井化学株式会社 Process for production of (poly)thiol compound for use as optical material, and polymerizable composition comprising the compound
US20090082544A1 (en) 2006-04-20 2009-03-26 Mitsui Chemicals, Inc. Process for producing polythiol compound for optical materials, and polymerizable composition containing polythiol compound
KR101016322B1 (en) 2008-12-30 2011-02-22 주식회사 포스코 Device for guiding a conveyer belt
CN101614831B (en) * 2009-08-11 2010-10-27 杭州新顺化工有限公司 High refractivity resin lens and preparation method thereof
KR20120058635A (en) 2010-08-13 2012-06-08 주식회사 케이오씨솔루션 Preparation of Polythiol Compound for Optical Lens and Polymerizable Composition Comprising It

Also Published As

Publication number Publication date
CN105906773A (en) 2016-08-31
KR20140142375A (en) 2014-12-11
EP2845847B1 (en) 2016-08-31
KR20140141723A (en) 2014-12-10
IN2014DN09746A (en) 2015-07-31
BR112014030076A2 (en) 2017-06-27
CN105906773B (en) 2018-05-29
EP3026041B1 (en) 2017-04-19
CN104321307B (en) 2016-08-17
CN104321306A (en) 2015-01-28
US9181180B2 (en) 2015-11-10
EP2845847A4 (en) 2015-04-29
KR101879962B1 (en) 2018-07-18
EP2845848A1 (en) 2015-03-11
EP2845847A1 (en) 2015-03-11
EP2845848B1 (en) 2016-02-24
EP3093282B1 (en) 2017-05-10
CN104321307A (en) 2015-01-28
EP3026041A1 (en) 2016-06-01
US20150133692A1 (en) 2015-05-14
EP2845848A4 (en) 2015-05-20
KR101661835B1 (en) 2016-09-30
US9637584B2 (en) 2017-05-02
CN106432664A (en) 2017-02-22
KR20160028486A (en) 2016-03-11
US20160017085A1 (en) 2016-01-21
WO2014027428A1 (en) 2014-02-20
US20160024242A1 (en) 2016-01-28
US9181179B2 (en) 2015-11-10
BR112015000373A2 (en) 2017-06-27
CN106432664B (en) 2019-05-28
WO2014027427A1 (en) 2014-02-20
EP3093282A1 (en) 2016-11-16
US9605105B2 (en) 2017-03-28
KR20160028487A (en) 2016-03-11
US20150126781A1 (en) 2015-05-07
CN104321306B (en) 2016-10-19

Similar Documents

Publication Publication Date Title
IN2014DN09747A (en)
CA2902624C (en) Method for producing sulfonyl chloride compound
WO2009128973A3 (en) Methods for the production of silver nanowires
BR112017007969A2 (en) A manufacturing method of epsilon-caprolactam
MY167899A (en) Process for the preparation of methionine
PH12018500582A1 (en) Crosslinked nucleic acid guna, method for producing same, and intermediate compound
MX348977B (en) Preparation of bicyclic guanidine salts in an aqueous media.
NZ718607A (en) Synthetic route to 2’-deoxy-2’,2’-difluorotetrahydrouridines
EA201490094A1 (en) METHOD OF FINAL URINE TREATMENT
RU2015155048A (en) NANOPARTICLES OF ELEMENTARY SELENIUM AND METHOD FOR PRODUCING
MX2016000390A (en) Process for manufacturing haloacetamides.
MX2011011025A (en) Preparation of c-pyrazine-methylamines.
BR112013027675A2 (en) process for producing 2-chloroalyl thiocyanate and 2-chloroalyl isothiocyanate
EA201992709A1 (en) METHOD FOR PRODUCING OPTICALLY ACTIVE COMPOUND
JO2928B1 (en) Method of synthesis of ferroquine by convergent reductive amination
MX2014008247A (en) Calmangafodipir, a new chemical entity, and other mixed metal complexes, methods of preparation, compositions, and methods of treatment.
TN2015000372A1 (en) A method for concentrating rare-earth metals in phosphogypsum
MY168411A (en) Method for preparing compound by novel michael addition reaction using water or various acids as additive
MX2013003581A (en) Process for producing granules comprising one or more complexing agent salts.
MY172002A (en) Process for preparing dialkyl disulphides
BR112015019305A2 (en) process for the production of pyridazinone compound and its production intermediates
IN2014DN10324A (en)
AR093901A1 (en) IMPROVED PROCESS FOR THE PREPARATION OF CERTAIN SUBSTITUTED SULFILIMINES
MY166884A (en) Method for producing acetylenedicarboxylic acid from acetylene and carbon dioxide
TH154890A (en)