US2814613A - Production and/or separation of nonionic surface active agents - Google Patents

Production and/or separation of nonionic surface active agents Download PDF

Info

Publication number
US2814613A
US2814613A US398206A US39820653A US2814613A US 2814613 A US2814613 A US 2814613A US 398206 A US398206 A US 398206A US 39820653 A US39820653 A US 39820653A US 2814613 A US2814613 A US 2814613A
Authority
US
United States
Prior art keywords
surface active
agent
active agent
fraction
ethylene oxide
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US398206A
Inventor
Desty Dennis Henry
Harbourn Charles Leslie Arthur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BP PLC
Original Assignee
BP PLC
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 BP PLC filed Critical BP PLC
Application granted granted Critical
Publication of US2814613A publication Critical patent/US2814613A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • This invention relates to "animproved' process for-the production and/or separation of 'non-ionicsurface*active agents.
  • the surface activeager'it' being only partiallysoluble in 'saidprcipitap in gent an'd said-precipitating agent being-a l'quid ⁇ vhi'ch i :mi'scible"vv' h saidaanvenewhere 'p'art'of said-surface ative agent istlirovvn oufif-soltitibnfandthfieafter recovering the precipitated; fraction.
  • the non-ionic surface active agent comprises a mixture of surface active compounds having, in the molecule, ethylene oxide chains diife'ring length
  • the fraction precipitated will contain "an increased portion of compounds having-relatively long ethylene oxide -ehains and the remainingsolution will-contaiifi 'a'n increased proportion of compounds havinga relatively short ethylene oxide chain. 7 I N
  • the process maybe'operatedjtofgiveaipluralitybfprecipitated fractions, for eampleby progressive additions of the "precipitatingliquid arty iiib'dific'a- 2,814,613 Patented ov. -26 1957 tion of the reaction conditions, as'by progressvely'decreasing'the temperature.
  • a process which comprises reacting ethylene oxide with a "suitable-organic compound whereby a non-ionic active agent is formed comprising a mixtureof surface active compounds having, in'th'e'jmolecule, ethylene oxide chains of'difiering lengths and thereafter,
  • Suitable solvents for the non-ionic surface active agents are low hidleciilar' vveight aliphatic alcohols and retai er,
  • suitableprecipitating agents are saturated aliphatic hydrocarbbiis, 'for example, normal-'pent'ane', iso hexane, normal-hexane, 'isopentane, normal-heptar'ie, iso 'octaiie.
  • a preferred material is isohexarie.
  • p p Lissapol NXA is a surface active agent having the formula R A O (CH H O -),;CH CH5 OH ivhfe R is an alien grouphaviiig, "an the average, car Ben atoms; fA'is a benzene ring; and iii'vvhi ch the value of it varis,jb'ii1gapproximately '12. Lis s'a p'ol i's'a'rgister'd trademark.
  • Example 1 proximately IOgiaiiisBf surface a'eave agent had'beii thrown out of solution.
  • the lower layer consisting of the precipitated liquid surface active agent was removed, being referred to hereinafter as fraction 1.
  • fraction 2 The addition of iso-octane to the remaining solution was continued until a further grams of surface active agent had been thrown out of solution.
  • the lower layer consisting of the precipitated liquid surface active agent was removed, being referred to hereinafter as fraction 2.
  • Example 2 This example illustrates the difference in properties of the feedstock, that is, untreated Lissapol NXA and fractions 1, 2 and 3.
  • the liquid surface active agent was convertedto solid form by the process described in the specification filed in respect of British patent application Serial No. 697,315.
  • fractions 1, 2 and 3 differ in properties from' the feedstock and from each other. Furthermore the precipitated fractions, fractions 1 and 2 are superior to the feedstock and to fraction 3 in the ease of formation of solid adducts with urea and, in respect of colour of product.
  • a process for the fractionation of a non-ionic surface active agent containing a mixture of surface active poly ethyl oxy condensation products of compoundsselected from the group consisting of fatty acids, resin acids, alcohols, alkylated phenols and mercaptans to obtain fractions differing in surface-active characteristics which comprises adding a saturated aliphatic hydrocarbon as a precipitating agent to a solution of saidsurface active agent in an organic solvent selected from the group consisting of low molecular weight alcohols, low molecular weight ketones, aromatic hydrocarbons, naphthenes and chlorinated hydrocarbons, said surface active agent being only partially soluble in saidprecipitating agent and said precipitating agent being a liquid which is miscible with said solvent, whereby part of said surface active agent is thrown out of solution to form a precipitated fraction and thereafter recovering said fraction.
  • a process for the production of a non-ionic surface active agent which comprises reacting ethylene oxide with an organic compound selected from the group consisting of fatty acids, resinacids alcohols, alkylated phenols. and
  • mercaptans to form a non-ionic surface active agent therewith containing a mixture of surface active compounds having, in the molecule, ethylene oxide chains of differing lengths and thereafter, in the presence of an organic solvent selected from the group consisting of low molecular weight alcohols, low molecular weight ketones, aromatic hydrocarbons, naphthenes and chlorinated hydrocarbons, fractionally precipitating part of the product containing compounds having an ethylene oxide chain of at least the desired length by the addition of an unsaturated aliphatic hydrocarbon as a liquid precipitating agent which is miscible with said solvent and in which said agent is only partly soluble, and thereafter recycling at least part of the remainder of the product containing compounds having a relatively short ethylene oxide chain to the reaction mixture comprising ethylene oxide and said organic compound.
  • an organic solvent selected from the group consisting of low molecular weight alcohols, low molecular weight ketones, aromatic hydrocarbons, naphthenes and chlorinated hydrocarbons
  • a process for the production of a non-ionic surface active agent which comprises reacting ethylene oxide with an organic compound selected from the group consisting of fatty acids, resin acids, alcohols, alkylated phenols and mercaptans to form a non-ionic surface active agent therewith, containing a mixture of surface active compounds having, in the molecule, ethylene oxide chains of differing lengths and thereafter, in the presence of an organic solvent selected from the group consisting of low molecular weight alcohols, low molecular weight ketones, aromatic hydrocarbons, naphthenes and chlorinated hydrocarbons, fractionally precipitating part of the product containing compounds having an ethylene oxide chain of at least the desired length by the addition of an unsaturated aliphatic hydrocarbon as a liquid precipitating agent which is miscible with said solvent and in which said agent is only partly soluble, thereafter subjecting the solution remaining after removal of the precipitated fraction to distillation for the removal of the organic solvent and precipitating agent, and recycling the surface active agent to the reaction mixture comprising ethylene oxide and said organic
  • each of the compounds forming the mixture of non-ionic surfaceactive compounds is a compound having the formula R-A-0-(CH CH O-) CH CH 0I-I wherein R is an alkyl group and A is a phenylene, group, R in the mixture having an average of 8 carbon atoms and A in the mixture having an average value of 12.

Description

nited States Patent FPRODUCTIO'N-AND/ORSEPARATION'OFNON- IIONIC SURFACE-ACTIVEYAGENTS DennisHe'nryDesty and Charles Leslie Arthur Harbourn,
This invention relates to "animproved' process for-the production and/or separation of 'non-ionicsurface*active agents.
'It is well known that by the condensation of ethylene oxide in thepresenCeof-fatty acids, resin acid,--alcohols,,
alkylated phenols or -m'ercaptans, products having *an ethylene oxide chain are obtained which are of considerable utilit-y as surface active agents. The length of the ethyleneoxidechain is an important factor in'determining the .surface active characteristics of the compound-in which "it is-contained. Thusaccording to length ofthe ethylene oxide chain, compounds of =a-particular type, diiferingonlyin respect'of this-chain-length, find primary utilityasfoaming agents, dispersing agents, wetting agents,
emulsifying agents, solutizers or as-detergents.
It is aacharacteristic of thecondensation reaction by which these surface active agents areformed that it "is not possible to obtain with ease a 'single'compound as product of said reaction and, in general, the product obtained consists of a mixture of compounds, said-compounds differing onefrom another in respect of-the length of the ethylene oxide chain. Thus, iii-general, bycommercially feasible. processes, the surface active agent obtained, While containing compounds ofpre-eminence in utility for atparticular function, will contain substantial proportions of compoundshavinggreater utility for a 'di'tferent' function.
It isa'n object of'the invention toprovide aprocess for the fractionation of nonvi'onic surface active: agents comprising mixtures of surface active compounds, to obtain fractions differing in surface active'characteristics.
It is another object to provide a'p r'ocess for theproduction of non-ionic active agents,- having a desired surface active characteristic, in improved yields. M
According to thehpresent invention there is -provided a processvvhich cornprisesadding a1precipitati'ng agent .to a solution of a non-ionic surface active agent in "an organic solvent, said surface "active agent comprising a mixture "of'sur'face active compounds having, in the molecule, a chain of ethylene oxide. groups, the surface activeager'it' being only partiallysoluble in 'saidprcipitap in gent an'd said-precipitating agent being-a l'quid \vhi'ch i :mi'scible"vv' h saidaanvenewhere 'p'art'of said-surface ative agent istlirovvn oufif-soltitibnfandthfieafter recovering the precipitated; fraction.
When the non-ionic surface active agent comprises a mixture of surface active compounds having, in the molecule, ethylene oxide chains diife'ring length, the fraction precipitated will contain "an increased portion of compounds having-relatively long ethylene oxide -ehains and the remainingsolution will-contaiifi 'a'n increased proportion of compounds havinga relatively short ethylene oxide chain. 7 I N If desired the process maybe'operatedjtofgiveaipluralitybfprecipitated fractions, for eampleby progressive additions of the "precipitatingliquid arty iiib'dific'a- 2,814,613 Patented ov. -26 1957 tion of the reaction conditions, as'by progressvely'decreasing'the temperature. Operating in the manner described, itis possible; to obtain two or more fractions froma mixed non-ionic surface active agent, each of the said fractions being ofparticular utility as a wetting agent or as 'an emulsifying agent or as a detergent.
According to another aspect of the-presentinvention there is provided a process which comprises reacting ethylene oxide with a "suitable-organic compound whereby a non-ionic active agent is formed comprising a mixtureof surface active compounds having, in'th'e'jmolecule, ethylene oxide chains of'difiering lengths and thereafter,
in the'presence of a solvent therefor, added to the reac. {tion mixture or'to the reaction product, fractionallypre- *cipitating part "of the product, comprising compounds having an ethylene oxide chain of at least the desired length, by'the addition of afp'rec'ipita'ting agent compris- 'iii'g' a liquid 'wh'ich is misciblewith said solvent and in "which said agent is only partly soluble and thereafter "rcyc'lingat least part of the 'rem'ainder'of the'product,
comprising compounds lia vijng a relatively short ethylene oxide chain, "to "the reaction'm xture comprising ethylene oxide and said organic 'compound. I r I I Suitable organic compoundsfor "reaction with ethylene oxide to"form "surface active agents are fatty acids, resin acids, alcohols, alkylatdphenol s and mercaptans. L
Suitable solvents for the non-ionic surface active agents are low hidleciilar' vveight aliphatic alcohols and retai er,
preferably having -1=3 carbon orn s/moleculeff or example, ethanol and acetone; aromatic'hydrocarbons,for e'xa'm'p'le, beniene 'and'to-lfiene; napiithe nesffor example cyclopenta'ne aridcyclohe'xar'ie and chlorinated hydrocarbo'ns, "for example, carbon tetrachloride and chloroform. Apreferred solvent is cy'clohe'xane. I
suitableprecipitating agents are saturated aliphatic hydrocarbbiis, 'for example, normal-'pent'ane', iso hexane, normal-hexane, 'isopentane, normal-heptar'ie, iso 'octaiie. A preferred material is isohexarie.
It is'also possihlqby'the process of the present invention, to-eifect a separati'onbf mixtures of compo'uhds containing'anethylene oxide chain,bas 'ed on dissimilari'tie's in molecular structure other than 'e'th'yle'ne'oxide chain length. Thus, forexample, it is possible in accordance with the-process of the invention'to fractiona'te mixtures containing compounds in which there are differences in thestnlcture of-the gro'upasso'ci'ated with the ethylene OXldfifChfiiIlOI" in the manner of attachment of said group to said chain. The operation of a' process in'this'manner lies within the scope of the invention.
Fractions of non-ionic surface active agents, precipitated in the mannerhereind'es'cribed are very suitable for use'as feedstocks to 'a process for the 'f'ormationof solid non-ionic surface active agents by reaction with urea as described in British patent application Serial N 697,315. g, v
The invention'is illustrated but in no Way limited by the following examples. I, p p Lissapol NXA"is a surface active agent having the formula R A O (CH H O -),;CH CH5 OH ivhfe R is an alien grouphaviiig, "an the average, car Ben atoms; fA'is a benzene ring; and iii'vvhi ch the value of it varis,jb'ii1gapproximately '12. Lis s'a p'ol i's'a'rgister'd trademark.
Example 1 proximately IOgiaiiisBf surface a'eave agent had'beii thrown out of solution. The lower layer consisting of the precipitated liquid surface active agent was removed, being referred to hereinafter as fraction 1.
The addition of iso-octane to the remaining solution was continued until a further grams of surface active agent had been thrown out of solution. The lower layer consisting of the precipitated liquid surface active agent was removed, being referred to hereinafter as fraction 2.
The remaining mixture of surface active agent, cyclohexane and iso-octane was distilled to remove cyclohexane and iso-octane overhead, the residual surface active agent constituting fraction 3.
Example 2 This example illustrates the difference in properties of the feedstock, that is, untreated Lissapol NXA and fractions 1, 2 and 3. In each case the liquid surface active agent was convertedto solid form by the process described in the specification filed in respect of British patent application Serial No. 697,315.
(a) 10 grams of Lissapol NXA, 100 ml. of normal pentane and 1 ml. of methanol were mixed and thereafter, grams of urea added. The mixture was stirred for 1 hour, allowed to stand for 48 hours and then filtered. The solid product, after evaporation of residual solvent, was a dark brown, slightly tacky powder.
(b) 10 grams of fraction 1, 100 ml. of normal pentane and 1 ml. of methanol were mixed and thereafter, 20
grams of urea added. The mixture was stirred for "minutes, allowed to stand for 2 hours, by which time a :satisfactory product had formed and then filtered. The :solid product, after evaporation of residual solvent, was
a fine, light brown free-flowing powder.
(c) 10 grams of fraction 2, 100 m1. of normal pentane and 1 ml. of methanol were mixed and thereafter, 20 grams of urea added. The mixture was stirred for 30 minutes. After standing for 2 hours the adduct was not yet in a conditionfor filtration. After 12 hours standing a satisfactory adduct had been formed. This was filtered off and residual solvent evaporated off. The product was a fine, light brown free-flowing powder.
(b) 10 grams of fraction 3, 100 ml. of normal pentane and 1 ml. of methanol were mixed and thereafter, 20 grams of urea added. The mixture was found to be unsuitable for the formation of a solid adduct in the form of a free-flowing powder.
The above experiments clearly show that fractions 1, 2 and 3 differ in properties from' the feedstock and from each other. Furthermore the precipitated fractions, fractions 1 and 2 are superior to the feedstock and to fraction 3 in the ease of formation of solid adducts with urea and, in respect of colour of product.
We claim:
1. A process for the fractionation of a non-ionic surface active agent containing a mixture of surface active poly ethyl oxy condensation products of compoundsselected from the group consisting of fatty acids, resin acids, alcohols, alkylated phenols and mercaptans to obtain fractions differing in surface-active characteristics, which comprises adding a saturated aliphatic hydrocarbon as a precipitating agent to a solution of saidsurface active agent in an organic solvent selected from the group consisting of low molecular weight alcohols, low molecular weight ketones, aromatic hydrocarbons, naphthenes and chlorinated hydrocarbons, said surface active agent being only partially soluble in saidprecipitating agent and said precipitating agent being a liquid which is miscible with said solvent, whereby part of said surface active agent is thrown out of solution to form a precipitated fraction and thereafter recovering said fraction.
2. A process for the production of a non-ionic surface active agent which comprises reacting ethylene oxide with an organic compound selected from the group consisting of fatty acids, resinacids alcohols, alkylated phenols. and
mercaptans to form a non-ionic surface active agent therewith containing a mixture of surface active compounds having, in the molecule, ethylene oxide chains of differing lengths and thereafter, in the presence of an organic solvent selected from the group consisting of low molecular weight alcohols, low molecular weight ketones, aromatic hydrocarbons, naphthenes and chlorinated hydrocarbons, fractionally precipitating part of the product containing compounds having an ethylene oxide chain of at least the desired length by the addition of an unsaturated aliphatic hydrocarbon as a liquid precipitating agent which is miscible with said solvent and in which said agent is only partly soluble, and thereafter recycling at least part of the remainder of the product containing compounds having a relatively short ethylene oxide chain to the reaction mixture comprising ethylene oxide and said organic compound.
3. A process for the production of a non-ionic surface active agent which comprises reacting ethylene oxide with an organic compound selected from the group consisting of fatty acids, resin acids, alcohols, alkylated phenols and mercaptans to form a non-ionic surface active agent therewith, containing a mixture of surface active compounds having, in the molecule, ethylene oxide chains of differing lengths and thereafter, in the presence of an organic solvent selected from the group consisting of low molecular weight alcohols, low molecular weight ketones, aromatic hydrocarbons, naphthenes and chlorinated hydrocarbons, fractionally precipitating part of the product containing compounds having an ethylene oxide chain of at least the desired length by the addition of an unsaturated aliphatic hydrocarbon as a liquid precipitating agent which is miscible with said solvent and in which said agent is only partly soluble, thereafter subjecting the solution remaining after removal of the precipitated fraction to distillation for the removal of the organic solvent and precipitating agent, and recycling the surface active agent to the reaction mixture comprising ethylene oxide and said organic compound.
4. A process as specified in claim 1 in which the precipitating agent is added in a plurality of stages, a precipitated fraction being recovered at each stage.
5. A process as specified in claim 1 in which the solution remaining after removal of the precipitated fraction is subjected to distillation, for the removal of organic solvent and precipitating agent, and a residue fraction of non-ionic surface active agent recovered.
6. A process as specified in claim 1 in which the organic solvent is cyclohexane.
7. A process as specified in claim 1 in which the precipitating agent is iso-hexane.
8. A process as specified in claim 3 in which the organic solvent is cyclohexane.
9. A process as specified in claim 3 in which the precipitating agent is iso-hexane.
10. ,A process as defined in claim 1, in which each of the compounds forming the mixture of non-ionic surfaceactive compounds is a compound having the formula R-A-0-(CH CH O-) CH CH 0I-I wherein R is an alkyl group and A is a phenylene, group, R in the mixture having an average of 8 carbon atoms and A in the mixture having an average value of 12.
References Cited in the file of this patent UNITED, STATES PATENTS 2,118,454 Schaafsma May 24, 1938 2,226,119 De Groote Dec. 24, 1940 2,233,382 De Groote Feb. 25, 1941 2,674,619 Lunstead Apr. 6, 1954 OTHER REFERENCES Chem. Abstracts, vol. 46, pp. 89334 (1952). The Use of Solvents, MacArdle, D. Van Nostrand Co., New York (1925) pages 151-155 only.

Claims (1)

1. A PROCESS FOR THE FRACTIONATION OF A NON-IONIC SURFACE ACTIVE AGENT CONTAINING A MIXTURE OF SURFACE ACTIVE POLY ETHYL OXY CONDENSATION PRODUCTS OF COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS, RESIN ACIDS, ALCOHOLS, ALKYLATED PHENOLS AND MERCAPTANS TO OBTAIN FRACTIONS DIFFERING IN SURFACE-ACTIVE CHARACTERISTICS, WHICH COMPRISES ADDING A SATURATED ALIPHATIC HYDROCARBON AS A PRECIPITATING AGENT TO A SOLUTION OF SAID SURFACE ACTIVE AGENT IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF LOW MOLECULAR WEIGHT ALCOHOLS, LOW MOLECULAR WEIGHT KETONES, AROMATIC HYDROCARBONS, NAPHTHENES AND CHLORINATED HYDROCARBONS, SAID SURFACE ACTIVE AGENT BEING ONLY PARTIALLY SOLUBLE IN SAID PRECIPITATING AGENT AND SAID PRECIPITATING AGENT BEING A LIQUID WHICH MISCIBLE WITHH SAID SOLVENT, WHEREBY PART OF SAID SURFACE ACTIVE AGENT IS THROWN OUT OF SOLUTION TO FORM A PRECIPITATED FRACTION AND THEREAFTER RECOVERING SAID FRACTION.
US398206A 1952-12-31 1953-12-14 Production and/or separation of nonionic surface active agents Expired - Lifetime US2814613A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33051/52A GB756334A (en) 1952-12-31 1952-12-31 Improvements in or relating to the production and/or separation of non-ionic surface active agents

Publications (1)

Publication Number Publication Date
US2814613A true US2814613A (en) 1957-11-26

Family

ID=10347874

Family Applications (1)

Application Number Title Priority Date Filing Date
US398206A Expired - Lifetime US2814613A (en) 1952-12-31 1953-12-14 Production and/or separation of nonionic surface active agents

Country Status (4)

Country Link
US (1) US2814613A (en)
BE (1) BE525459A (en)
FR (1) FR1096250A (en)
GB (1) GB756334A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124602A (en) * 1964-03-10 Aliphatic esters of unsaturated
US4079086A (en) * 1975-04-28 1978-03-14 Monsanto Company Process for reacting alkyl epoxides with glycols

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2019212823B2 (en) 2018-01-26 2021-09-23 Ecolab Usa Inc. Solidifying liquid anionic surfactants
MX2020007846A (en) 2018-01-26 2020-09-25 Ecolab Usa Inc Solidifying liquid amine oxide, betaine, and/or sultaine surfactants with a carrier.
BR112020015170A2 (en) 2018-01-26 2021-01-26 Ecolab Usa Inc. solidified liquid surfactant and solid cleaning compositions, and method for cleaning a surface

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2118454A (en) * 1935-03-30 1938-05-24 Shell Dev Process for separating high molecular mixtures of the ester type
US2226119A (en) * 1940-03-06 1940-12-24 Petrolite Corp Flooding process for recovering oil from subterranean oil-bearing strata
US2233382A (en) * 1940-03-06 1941-02-25 Petrolite Corp Flooding process for recovering oil from subterranean oil-bearing strata
US2674619A (en) * 1953-10-19 1954-04-06 Wyandotte Chemicals Corp Polyoxyalkylene compounds

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2118454A (en) * 1935-03-30 1938-05-24 Shell Dev Process for separating high molecular mixtures of the ester type
US2226119A (en) * 1940-03-06 1940-12-24 Petrolite Corp Flooding process for recovering oil from subterranean oil-bearing strata
US2233382A (en) * 1940-03-06 1941-02-25 Petrolite Corp Flooding process for recovering oil from subterranean oil-bearing strata
US2674619A (en) * 1953-10-19 1954-04-06 Wyandotte Chemicals Corp Polyoxyalkylene compounds

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124602A (en) * 1964-03-10 Aliphatic esters of unsaturated
US4079086A (en) * 1975-04-28 1978-03-14 Monsanto Company Process for reacting alkyl epoxides with glycols

Also Published As

Publication number Publication date
GB756334A (en) 1956-09-05
FR1096250A (en) 1955-06-16
BE525459A (en)

Similar Documents

Publication Publication Date Title
US2814612A (en) Urea adducts
US2814613A (en) Production and/or separation of nonionic surface active agents
EP3649111B1 (en) Polyaromatic molecule having a nitrile oxide function
US2715145A (en) Manufacture of phenol
CH392496A (en) Process for preparing alkylated 1,1-dimethyl indanes
US3470251A (en) Separation and purification of secondary alkyl primary amines
DE1593653B2 (en) PROCESS FOR THE PRODUCTION OF POLYALKYLTETRALINES BY REACTION OF 2,3DIMETHYLBUTEN WITH AN ALPHAMETHYLSTYRENE SUBSTITUTED IN PARA-METHYL OR ETHYL-SUBSTITUTES
US2540886A (en) Cyclohexanone-formaldehyde resin production
US2359980A (en) Process for refining pine oleoresin
US2407265A (en) Copper compounds of mercaptans derived from terpenes and processes of producing them
US4321214A (en) Extreme purification of sulfonic-type acids for processing to highly overbased metal sulfonates
US2223194A (en) Recovery of petroleum sulphonic compounds
US3888917A (en) Organic sulfonate extraction process
Bloch et al. An improved synthesis of 2, 2-dialkyl-1, 3-indanediones
KR930006604B1 (en) Method for producing cycloalkanols
EP0000464B1 (en) Process for the purification of mercapto benzothiazole
US2447479A (en) Separation of ethyl benzene from xylenes
US2036469A (en) Petroleum sulphonic acids and sul
US2559083A (en) Decolorization of polyolefinic
EP1226135B1 (en) Method for preparing a thiophene derivative
US4032581A (en) Method for separation of m- or p-cresol
US2235840A (en) Process for producing hydroxy citronellal
EP0618285B1 (en) Treated labdanum oil, process for producing the same and perfume composition containing the game
US2697122A (en) Process for isolating phenolic compounds from mixtures thereof
US3450749A (en) Organic sulfonate production and purification