US2739163A - Manufacture of hard odorless soap from low grade fats and oils - Google Patents

Manufacture of hard odorless soap from low grade fats and oils Download PDF

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Publication number
US2739163A
US2739163A US346803A US34680353A US2739163A US 2739163 A US2739163 A US 2739163A US 346803 A US346803 A US 346803A US 34680353 A US34680353 A US 34680353A US 2739163 A US2739163 A US 2739163A
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US
United States
Prior art keywords
fatty acids
oils
fats
low grade
hard
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
US346803A
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English (en)
Inventor
Appuhn Klaus
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IND Cia
INDUSTRIAL Cia
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IND Cia
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Filing date
Publication date
Priority claimed from GB1774152A external-priority patent/GB710825A/en
Application filed by IND Cia filed Critical IND Cia
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Publication of US2739163A publication Critical patent/US2739163A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
    • C11D13/02—Boiling soap; Refining
    • C11D13/04—Continuous methods therefor

Definitions

  • This invention relates to the manufacture of odorless soap of. good quality from low grade animal or vegetable oils and fats which have a disagreeable odor...
  • Soaps of good quality are usuallyma-nufactured from saturated fatty acids which contain from 12 to 16 carbon atoms in the chain, as for instance those fatty acids predominating in coconut oil.
  • the foam formation can be moderated to such an extent that it is possible to carry out the saponification reaction in a continuous manner without special precautions, if the fatty acids obtained by the Twitchell process are first treated with activated carbon.
  • the fatty acids may be treated with about 0.2% of their weight of activated carbon, preferably after first "2 treating them with bleaching earth, for example, with about 2%. of their weight of bleaching earth.
  • One method of carrying out the process according to the present invention given by way of example is as follows:
  • a .mixture of fatty acids obtained by splitting malodorous oils and fats by the Twitchell process are vacuum dried, treated with 2% of their we'ight ofbleaching earth and then with 02% of activated carbon and finally filtered in a filter-press.
  • the resultant fatty. acids at a temperature slightly above their melting point, and the alkali in molten state, are simultaneously passed in controlled amounts to a specially constructed saponifier such, for example, as described in U. S. Patent No. 2,492,940,
  • Example 1 The raw materials used were fatty acids obtained from whale oil by a Twitchell type reagent and treated with activated carbon. The chemical characteristics of these fatty acidswerei saponification index 189.5 Iodine number 125.1
  • the iodine number decreased by about 73 units, this being due to the fact that the long and non-saturated carbon chains were broken and transformed into shorter and more saturated compounds.”
  • Example 2 In another trial, fatty acids obtained from the refining of sunflower oil were used as raw material and treated as in Example 1, using 20% molten alkali. A neutral and excellent quality soap was also obtained. The iodine number of the fatty acids decreased from 134.0 in the raw material to 80.6 in the fatty acids of the soap and the saponification index increased from 188.1 to 199.0.
  • Example 3 Fatty acids obtained frornfish oil by a Twitchell reagent were used as raw material and treated as in Example 1. The chemical characteristics of these fatty acids were:
  • a continuous process for the manufacture of hard, odorless soaps from highly unsaturated long chain fatty acids produced from low grade or marine animal fats and oils obtained by splitting such fats and oils by a Twitchell reagent comprising, treating said fatty acids with activated carbon, then anhydrously saponifying such treated acids at a temperature between 300 and 350 C. with an excess of molten alkali at substantially atmospheric pressure.
  • a continuous process for the manufacture of hard, odorless soap from highly unsaturated long chain fatty acids produced from low grade ormarine animal fats and oils obtained by splitting such fats and oils by a Twitchell reagent comprising'treating said fatty acids with bleaching earth in about the proportion of 2.0% of the weight of the fatty acids, then treating the fatty acids with activated carbon in about the proportion of 0.2% of the weight of the fatty acids, separating the fatty acids from the treating substances and anhydrousiy saponifying such separated treated fatty acids at a temperature between 300 and 350 C. with an excess of molten alkali at substantially atmospheric pressure.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Fats And Perfumes (AREA)
  • Detergent Compositions (AREA)
US346803A 1952-07-11 1953-04-03 Manufacture of hard odorless soap from low grade fats and oils Expired - Lifetime US2739163A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2739163X 1952-07-11
GB1774152A GB710825A (en) 1952-07-14 1952-07-14 Improved manufacture of odourless soaps from low grade oils

Publications (1)

Publication Number Publication Date
US2739163A true US2739163A (en) 1956-03-20

Family

ID=32299762

Family Applications (1)

Application Number Title Priority Date Filing Date
US346803A Expired - Lifetime US2739163A (en) 1952-07-11 1953-04-03 Manufacture of hard odorless soap from low grade fats and oils

Country Status (4)

Country Link
US (1) US2739163A (en(2012))
BE (1) BE521995A (en(2012))
FR (1) FR1063987A (en(2012))
NL (1) NL180413C (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5620692A (en) * 1993-12-23 1997-04-15 Nurture, Inc. Oat oil compositions with useful cosmetic and dermatological properties
JP2002212591A (ja) * 2001-01-23 2002-07-31 Biox:Kk 洗浄剤

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1608341A (en) * 1924-01-05 1926-11-23 Schrauth Walther Fat-splitting agent and process for splitting fats
US2475420A (en) * 1947-05-07 1949-07-05 Emery Industries Inc Treatment of fatty acids
US2492940A (en) * 1945-12-22 1949-12-27 Compania Ind Manufacture of soap from sperm oil
US2654768A (en) * 1952-03-12 1953-10-06 Kellogg M W Co Production of fatty acid concentrates

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1608341A (en) * 1924-01-05 1926-11-23 Schrauth Walther Fat-splitting agent and process for splitting fats
US2492940A (en) * 1945-12-22 1949-12-27 Compania Ind Manufacture of soap from sperm oil
US2475420A (en) * 1947-05-07 1949-07-05 Emery Industries Inc Treatment of fatty acids
US2654768A (en) * 1952-03-12 1953-10-06 Kellogg M W Co Production of fatty acid concentrates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5620692A (en) * 1993-12-23 1997-04-15 Nurture, Inc. Oat oil compositions with useful cosmetic and dermatological properties
JP2002212591A (ja) * 2001-01-23 2002-07-31 Biox:Kk 洗浄剤

Also Published As

Publication number Publication date
BE521995A (en(2012))
NL180413C (nl)
FR1063987A (fr) 1954-05-10

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