JP4034289B2 - 脂肪アルコールの製造方法 - Google Patents
脂肪アルコールの製造方法 Download PDFInfo
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- JP4034289B2 JP4034289B2 JP2004109968A JP2004109968A JP4034289B2 JP 4034289 B2 JP4034289 B2 JP 4034289B2 JP 2004109968 A JP2004109968 A JP 2004109968A JP 2004109968 A JP2004109968 A JP 2004109968A JP 4034289 B2 JP4034289 B2 JP 4034289B2
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- distillation
- fatty alcohol
- alkali component
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- distillation residue
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- 150000002191 fatty alcohols Chemical class 0.000 title claims description 36
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000004821 distillation Methods 0.000 claims description 73
- 239000003513 alkali Substances 0.000 claims description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000005984 hydrogenation reaction Methods 0.000 claims description 33
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 27
- 239000000194 fatty acid Substances 0.000 claims description 27
- 229930195729 fatty acid Natural products 0.000 claims description 27
- -1 fatty acid ester Chemical class 0.000 claims description 25
- 239000002253 acid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 29
- 239000003054 catalyst Substances 0.000 description 24
- 239000002994 raw material Substances 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 16
- 239000003921 oil Substances 0.000 description 16
- 235000019198 oils Nutrition 0.000 description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 15
- 238000011282 treatment Methods 0.000 description 14
- 239000004215 Carbon black (E152) Substances 0.000 description 10
- 229930195733 hydrocarbon Natural products 0.000 description 10
- 150000002430 hydrocarbons Chemical class 0.000 description 10
- 238000007127 saponification reaction Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 238000011084 recovery Methods 0.000 description 9
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 7
- 150000004702 methyl esters Chemical class 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 235000019387 fatty acid methyl ester Nutrition 0.000 description 6
- 239000003456 ion exchange resin Substances 0.000 description 6
- 229920003303 ion-exchange polymer Polymers 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- 150000004665 fatty acids Chemical class 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910017813 Cu—Cr Inorganic materials 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000007259 addition reaction Methods 0.000 description 4
- 238000010531 catalytic reduction reaction Methods 0.000 description 4
- 239000003346 palm kernel oil Substances 0.000 description 4
- 235000019865 palm kernel oil Nutrition 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 235000019482 Palm oil Nutrition 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000001944 continuous distillation Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- 235000019197 fats Nutrition 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000014593 oils and fats Nutrition 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002540 palm oil Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 description 2
- 239000012279 sodium borohydride Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 235000019485 Safflower oil Nutrition 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000011276 addition treatment Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- OGBUMNBNEWYMNJ-UHFFFAOYSA-N batilol Chemical class CCCCCCCCCCCCCCCCCCOCC(O)CO OGBUMNBNEWYMNJ-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 235000021323 fish oil Nutrition 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000005641 methacryl group Chemical group 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 235000005713 safflower oil Nutrition 0.000 description 1
- 239000003813 safflower oil Substances 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
- C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof
- C07C29/149—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof with hydrogen or hydrogen-containing gases
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Fats And Perfumes (AREA)
Description
"Production of Fatty Alcohols from Fatty Acids",by Theodor Voeste, JAOCS, Vol. 61, No.2 (February 1984), Page 350-352
本発明の水素添加工程は、脂肪酸エステルに水素添加して粗脂肪アルコールを得る工程である。
本工程では上記原料脂肪酸エステルに応じた粗脂肪アルコールが得られる。
本発明の蒸留工程は、水素添加工程で得られる粗脂肪アルコールを蒸留精製して、脂肪アルコールを得る工程である。
本発明の回収工程は、蒸留工程で得られる蒸留残渣の一部又は全部を回収して、蒸留残渣のアルカリ成分を除去した後、水素添加工程又は原料脂肪酸エステルに添加する工程である。
<水素添加及び蒸留>
パーム核油由来の脂肪酸メチルエステル(けん化価240mg−KOH/g、日本油化学協会編「基準油脂分析試験法」)を原料として、この原料エステル200gに、Cu−Cr水素添加触媒(日揮化学(株)製:KSC−1)3g存在下、水素を5L/minで流通し285℃、24.5MPaの条件で3時間水素添加反応を行って粗脂肪アルコールを得た。この粗脂肪アルコールに水酸化カリウムを50ppm(カリウム基準)添加し、連続式蒸留装置に仕込み、真空度1.6kPa、塔頂温度232℃まで加熱し、蒸留操作を行った。この時、蒸留残渣中のアルカリ成分を原子吸光光度計(島津製作所製Z−6100)で定量したところ、1020ppmであった。
得られた蒸留残渣を撹拌混合器に仕込み、80℃の温水を残渣に対して90重量%添加し、90℃に温度調整した後、30分攪拌した。次に、20%の硫酸水溶液をpH=2.4になるように添加した後、90℃にて30分間攪拌した。温度を90℃に保った状態で1時間、分液ロート中で静置して油水を分離して、アルカリ成分を除去した蒸留残渣を得た。アルカリ成分除去操作を行った蒸留残渣中のアルカリ成分は2.5ppmであり、99.8%のアルカリ成分が除去されていた。
アルカリ成分を除去した蒸留残渣20gをパーム核油由来の脂肪酸メチルエステル(けん化価240mg−KOH/g、日本油化学協会編「基準油脂分析試験法」)200gに添加し、500mLのオートクレーブに仕込んだ。この時の脂肪酸エステル原料の総アルカリ成分含有量は3.9ppmであった。Cu−Cr水素添加触媒(日揮化学(株)製:KSC−1)3g存在下、水素を5L/minで流通し285℃、24.5MPaの条件で3時間水素添加反応を行った。
実施例1の回収残渣添加反応において、アルカリ成分を除去した蒸留残渣を加えずに、実施例1で使用した脂肪酸メチルエステルを500mLのオートクレーブに仕込み、実施例1と同じ条件で水素添加反応を行った。
実施例1において、アルカリ成分除去を行わずに得られた蒸留残渣20gを、実施例1で使用した脂肪酸メチルエステル200gに添加し、500mLのオートクレーブに仕込んだ。脂肪酸エステル原料の総アルカリ成分含有量は96ppmであった。その後、実施例1と同一条件で水素添加反応を行った。
<水素添加及び蒸留>
実施例1で使用したパーム核油由来のメチルエステルを、Cu−Cr水素添加成形触媒(日揮化学(株)製:N202D)500ccが充填された内径25mmφ、触媒層長さ2mの反応塔に、LHSV=0.75(1/H)で流通して水素添加反応を行い粗脂肪アルコールを得た。この時の反応条件は、温度220℃、圧力20MPa、水素/メチルエステル(モル比)=100であった。この粗脂肪アルコールに水酸化カリウムを50ppm(カリウム基準)添加し、連続式蒸留装置に仕込み、真空度1.6kPa、塔頂温度232℃まで加熱し、蒸留操作を行った。この時、蒸留残渣中のアルカリ成分は1138ppmであった。
得られた蒸留残渣を撹拌混合器に仕込み、80℃の温水を残渣に対して5重量%添加し、90℃に温度調整した後、30分攪拌した。次に、20%の硫酸水溶液をpH=5.0になるように添加した後、90℃にて30分間攪拌した。温度を90℃に保った状態で1時間、分液ロート中で静置して油水を分離して、アルカリ成分を除去した蒸留残渣を得た。アルカリ成分除去操作を行った蒸留残渣中のアルカリ成分は148ppmであり、87%のアルカリ成分が除去されていた。
アルカリ成分を除去した蒸留残渣を、実施例1と同様の原料脂肪酸メチルエステルに対して1.3%添加し、蒸留残渣回収原料メチルエステルとした。該蒸留残渣回収原料メチルエステルの総アルカリ成分含有量は1ppmであった。該蒸留残渣回収原料メチルエステルを、Cu−Cr水素添加成形触媒(日揮化学(株)製、N202D)500ccが充填された内径25mmφ、触媒層長さ2mの反応塔にLHSV=0.75(1/H)で流通して水素添加反応を行った。この時の水素添加反応条件は、温度220℃、圧力20MPa、水素/メチルエステル(モル比)=100であった。
実施例2の回収残渣添加反応において、アルカリ成分を除去した蒸留残渣を加えないこと以外は実施例2と同一の条件で、脂肪酸メチルエステルの水素添加反応を行った。
表3に示すアルカリ濃度を有する各種蒸留残渣に対し、表3に示す各種温水添加及び酸添加処理を施した場合のアルカリ成分除去結果を表3に示す。温水処理のみでも69.0%のアルカリ成分が除去され(実施例3)、酸処理との併用により更に効率的にアルカリ成分を除去することが示される。
Claims (3)
- 脂肪酸エステルに水素添加して粗脂肪アルコールを得る工程(以下水素添加工程という)、得られた粗脂肪アルコールにアルカリ成分を添加して蒸留精製を行い脂肪アルコールを得る工程(以下蒸留工程という)を含む脂肪アルコールの製造方法であって、蒸留工程で得られる蒸留残渣の一部又は全部を回収して、蒸留残渣のアルカリ成分を除去した後、水素添加工程又は原料脂肪酸エステルに添加する工程を含む、脂肪アルコールの製造方法。
- アルカリ成分の除去を、蒸留残渣と水とを混合した後、油水分離することにより行う、請求項1記載の脂肪アルコールの製造方法。
- アルカリ成分の除去を、蒸留残渣と酸及び水とを混合した後、油水分離することにより行う、請求項1又は2記載の脂肪アルコールの製造方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004109968A JP4034289B2 (ja) | 2004-04-02 | 2004-04-02 | 脂肪アルコールの製造方法 |
US11/084,161 US7208643B2 (en) | 2004-04-02 | 2005-03-21 | Process for producing fatty alcohol |
EP05006992A EP1586549B1 (en) | 2004-04-02 | 2005-03-31 | Process for producing fatty alcohol |
DE602005016626T DE602005016626D1 (de) | 2004-04-02 | 2005-03-31 | Verfahren zur Herstellung von Fettsäurealkoholen |
MYPI20051488A MY136808A (en) | 2004-04-02 | 2005-04-01 | Process for producing fatty alcohol |
CNB2005100630308A CN100450984C (zh) | 2004-04-02 | 2005-04-01 | 脂肪醇的制造方法 |
Applications Claiming Priority (1)
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JP2004109968A JP4034289B2 (ja) | 2004-04-02 | 2004-04-02 | 脂肪アルコールの製造方法 |
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JP2005289930A JP2005289930A (ja) | 2005-10-20 |
JP4034289B2 true JP4034289B2 (ja) | 2008-01-16 |
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JP2004109968A Expired - Lifetime JP4034289B2 (ja) | 2004-04-02 | 2004-04-02 | 脂肪アルコールの製造方法 |
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US (1) | US7208643B2 (ja) |
EP (1) | EP1586549B1 (ja) |
JP (1) | JP4034289B2 (ja) |
CN (1) | CN100450984C (ja) |
DE (1) | DE602005016626D1 (ja) |
MY (1) | MY136808A (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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GB0719251D0 (en) * | 2007-10-03 | 2007-11-14 | Davy Process Techn Ltd | Process |
US7615671B2 (en) | 2007-11-30 | 2009-11-10 | Eastman Chemical Company | Hydrogenation process for the preparation of 1,2-diols |
CN103228616B (zh) | 2010-10-25 | 2016-03-02 | 斯特潘公司 | 来自天然油复分解的脂肪胺、酰胺基胺及其衍生物 |
BR112013009946B1 (pt) | 2010-10-25 | 2019-04-30 | Stepan Company | Composição de sulfobetaina, betaina ou amônio quaternário, derivado; formulação de glifosato, composição de herbicida solúvel em água ou composição antimicrobiana, limpador de superfície áspera, formulação de detergente para vestuário sujo, xampu ou condicionador de cabelo ou produto de limpeza pessoal ou sabonete, inibidor de corrosão, dispersante de parafina, espumante de poço de gás, espumante, aditivo de espuma ou dispersante e emulsificante aniônico para composições agrícolas |
CN102249852B (zh) * | 2011-05-20 | 2013-07-10 | 浙江恒翔化工有限公司 | 利用低级油脂生产天然脂肪醇的方法 |
WO2013163071A1 (en) | 2012-04-24 | 2013-10-31 | Elevance Renewable Sciences, Inc. | Unsaturated fatty alcohol compositions and derivatives from natural oil metathesis |
US9688944B2 (en) | 2012-04-24 | 2017-06-27 | Stepan Company | Synergistic surfactant blends |
WO2013162737A1 (en) | 2012-04-24 | 2013-10-31 | Stepan Company | Unsaturated fatty alcohol alkoxylates from natural oil metathesis |
ES2833282T3 (es) | 2012-04-24 | 2021-06-14 | Stepan Co | Derivados de alcohol graso no saturado a partir de metátesis del aceite natural |
EP2964598B1 (en) * | 2013-03-07 | 2020-08-26 | Genomatica, Inc. | Downstream processing of fatty alcohol compositions produced by recombinant host cells |
DK2967033T3 (da) | 2013-03-13 | 2019-11-18 | Stepan Co | Overfladeaktive midler baseret på monoumættede fedtalkoholderivater |
CN105189525A (zh) | 2013-03-14 | 2015-12-23 | 埃莱万斯可再生能源科学股份有限公司 | 烯基糖苷及其制备 |
US10694743B2 (en) | 2014-07-02 | 2020-06-30 | Stepan Company | Agricultural compositions with reduced aquatic toxicity |
CN108569950B (zh) * | 2018-05-18 | 2021-11-30 | 东莞理工学院 | 一种聚3-羟基丁酸酯工业粗品一锅法制备正丁醇的方法 |
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JP2005289930A (ja) | 2005-10-20 |
US20050222469A1 (en) | 2005-10-06 |
DE602005016626D1 (de) | 2009-10-29 |
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