US2583322A - Lithium 3-thia-7, 7, dimethyl-7-trimethylsiloxy-7-silaheptanoate - Google Patents

Lithium 3-thia-7, 7, dimethyl-7-trimethylsiloxy-7-silaheptanoate Download PDF

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Publication number
US2583322A
US2583322A US111094A US11109449A US2583322A US 2583322 A US2583322 A US 2583322A US 111094 A US111094 A US 111094A US 11109449 A US11109449 A US 11109449A US 2583322 A US2583322 A US 2583322A
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thia
lithium
trimethylsiloxy
dimethyl
silaheptanoate
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US111094A
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Charles A Burkhard
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General Electric Co
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General Electric Co
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Priority to US111094A priority Critical patent/US2583322A/en
Priority to GB19426/50A priority patent/GB688407A/en
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F13/00Compounds containing elements of Groups 7 or 17 of the Periodic Table
    • C07F13/005Compounds without a metal-carbon linkage
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F15/00Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
    • C07F15/02Iron compounds
    • C07F15/025Iron compounds without a metal-carbon linkage
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F15/00Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
    • C07F15/04Nickel compounds
    • C07F15/045Nickel compounds without a metal-carbon linkage
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F15/00Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
    • C07F15/06Cobalt compounds
    • C07F15/065Cobalt compounds without a metal-carbon linkage
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/0803Compounds with Si-C or Si-Si linkages
    • C07F7/081Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/0834Compounds having one or more O-Si linkage
    • C07F7/0838Compounds with one or more Si-O-Si sequences
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S516/00Colloid systems and wetting agents; subcombinations thereof; processes of
    • Y10S516/01Wetting, emulsifying, dispersing, or stabilizing agents

Definitions

  • the present invention relates to alkali salts of organosilicon compounds. It is particularly concerned with water soluble compounds useful as detergents and emulsifying agents and having the general formula wherein n is from to 10, preferably 0 to 1, m is an integer of from 2 to 3 and M is an alkali metal, particularly lithium, sodium or potassium.
  • compositions employed in the manufacture of the detergents include the following:
  • an acid of the above type is neutralized with a solution of an alkali metal base and the alkali metal salt recovered by evaporation of the solvent.
  • the product appears to have substantially the same detergent properties as ordinary organic acid soaps of the same or substantially the same molecular weight. Due to the presence of the sulfur atom, the soaps of the present invention may also be used in ore floatation processes such as are employed in the recovery of lead, copper, silver, gold and other heavy metals. They may also be employed as lubricant additives in lubricating oils.
  • Example 1 A solution of 3-thia-7-trimethylsiloxy-7,7-dimethyl-7-silaheptanoic acid in 95 percent ethyl alcohol was neutralized by the addition of an equivalent quantity of 0.5 N sodium hydroxide. The water and alcohol solvents were removed by heating on a steam bath followed by heating to dryness in a vacuum oven at 75 C.
  • Aqueous solutions of the resultant soap exhibited good detergent properties in tests including the washing of soiled white cloth and the removal of dirt from ones hands. Considerable stable foam was obtained upon shaking of the aqueous solutions.
  • a similar soap was obtained by substituting KOI-I for the NaOH.
  • Example 2 A quantity of 3-thia-7-trimethylsiloxy-7 ,7 -dimethyl-7-silaheptanoic acid was neutralized by the addition of a solution of lithium hydroxide and the resultant lithium soap recovered by evaporating the solvent.
  • This soap differs from the lithium soap prepared from stearic acid in that it is soluble in acetone. It formed a large quantity of foam in distilled Water and was precipitated from aqueous solutions thereof by ions such as calcium and magnesium.
  • Example 3-thia-6,6-dimethylheptanoic acid and 3-thia-7-sila-7,7-dimethyloctanoic acid were respectively neutralized by the addition of 0.5 N sodium hydroxide solution.
  • the products were aqueous solutions of the sodium salts of the acids having foaming and detergent properties similar to the soaps of the previous examples.
  • the compounds herein described have also been employed as emulsifying agents for preparing aqueous emulsions of liquid organopolysiloxanes, such as, methyl polysiloxane oils.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)

Description

Patented Jan. 22, 1952 LITHIUM 3-THIA-7,7,D1IMETHYL-7-TRI- METHYLSILOXY-7 -SILAHEPTANOATE Charles A. Burkhard, Alplaus, N. Y., assignor to General Electric Company, a corporation of New York No Drawing. Application August 18, 1949, Serial No. 111,094
1 Claim. 1
The present invention relates to alkali salts of organosilicon compounds. It is particularly concerned with water soluble compounds useful as detergents and emulsifying agents and having the general formula wherein n is from to 10, preferably 0 to 1, m is an integer of from 2 to 3 and M is an alkali metal, particularly lithium, sodium or potassium.
Representative acids employed in the manufacture of the detergents include the following:
1. 3-thia-6-sila-6,6-dimethylheptanoic acid (CH3) aSiCH2CI-I2SCH2CO2H 2. 3-thia-7-sila-7,7-dimethy1octanoic acid (CHa) 3SICH2CH2CH2SCH2CO2H 3. 3 thia 7,7 dimethyl 7 trimethylsiloxy- 7-silaheptanoic acid (CH3) aSiOSi (CH3)2 (CH2) 3SCH2CO2H These acids and their preparation by the reaction of thioglycolic acid and a suitable alkenyl silane or siloxane of the formula wherein R is a vinyl or allyl group are specifically described and claimed in my copending application SerialNo. 111,091 filed concurrently herewith and assigned to the same assignee as the present invention.
In accordance with the present invention, an acid of the above type is neutralized with a solution of an alkali metal base and the alkali metal salt recovered by evaporation of the solvent. The product appears to have substantially the same detergent properties as ordinary organic acid soaps of the same or substantially the same molecular weight. Due to the presence of the sulfur atom, the soaps of the present invention may also be used in ore floatation processes such as are employed in the recovery of lead, copper, silver, gold and other heavy metals. They may also be employed as lubricant additives in lubricating oils.
In order that those skilled in the art better may understand how the present invention may be carried into effect, the following illustrative examples are given:
Example 1.A solution of 3-thia-7-trimethylsiloxy-7,7-dimethyl-7-silaheptanoic acid in 95 percent ethyl alcohol was neutralized by the addition of an equivalent quantity of 0.5 N sodium hydroxide. The water and alcohol solvents were removed by heating on a steam bath followed by heating to dryness in a vacuum oven at 75 C.
Analysis of the product for sulfur gave 9.99 and 10.08%; calculated 10.60.
Aqueous solutions of the resultant soap exhibited good detergent properties in tests including the washing of soiled white cloth and the removal of dirt from ones hands. Considerable stable foam was obtained upon shaking of the aqueous solutions. A similar soap was obtained by substituting KOI-I for the NaOH.
Example 2.A quantity of 3-thia-7-trimethylsiloxy-7 ,7 -dimethyl-7-silaheptanoic acid was neutralized by the addition of a solution of lithium hydroxide and the resultant lithium soap recovered by evaporating the solvent. This soap differs from the lithium soap prepared from stearic acid in that it is soluble in acetone. It formed a large quantity of foam in distilled Water and was precipitated from aqueous solutions thereof by ions such as calcium and magnesium.
Example 3.-3-thia-6,6-dimethylheptanoic acid and 3-thia-7-sila-7,7-dimethyloctanoic acid were respectively neutralized by the addition of 0.5 N sodium hydroxide solution. The products were aqueous solutions of the sodium salts of the acids having foaming and detergent properties similar to the soaps of the previous examples.
While the invention has been particularly described with reference to the use of the designated acids, it will be obvious the hydrolyzable esters thereof can be substituted therefor.
The compounds herein described have also been employed as emulsifying agents for preparing aqueous emulsions of liquid organopolysiloxanes, such as, methyl polysiloxane oils.
What I claim as new and desire to secure by Letters Patent of the United States is:
Lithium 3-thia-7,7-dimethyl-7-trimethylsiloxy- 7-silaheptanoate.
CHARLES A. BURKHARD.
REFERENCES CITED The following references are of record in tne file of this patent:
UNITED STATES PATENTS Name Date Burke July 18, 1950 OTHER REFERENCES Number (1945), page 356, Interscience, publisher, New
York.
Swartz et al.: "Surface Acting Agents" (1949), page 41, Interscience, publisher, New York.
US111094A 1949-08-18 1949-08-18 Lithium 3-thia-7, 7, dimethyl-7-trimethylsiloxy-7-silaheptanoate Expired - Lifetime US2583322A (en)

Priority Applications (2)

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US111094A US2583322A (en) 1949-08-18 1949-08-18 Lithium 3-thia-7, 7, dimethyl-7-trimethylsiloxy-7-silaheptanoate
GB19426/50A GB688407A (en) 1949-08-18 1950-08-03 Improvements in and relating to alkali metal salts of organosilicon compounds

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US111094A US2583322A (en) 1949-08-18 1949-08-18 Lithium 3-thia-7, 7, dimethyl-7-trimethylsiloxy-7-silaheptanoate

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392182A (en) * 1963-02-28 1968-07-09 Goldschmidt Ag Th Novel organosilicon compounds and process for their preparation
US3481962A (en) * 1964-07-30 1969-12-02 Bayer Ag Process for the production of organosiloxanes
US11014097B2 (en) * 2016-12-14 2021-05-25 Ecolab Usa Inc. Functionalized silicones for froth flotation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515857A (en) * 1946-11-26 1950-07-18 Du Pont Compounds having a carboxyalkylthio or a carbalkoxyalkylthio group bonded to siliconthrough hydrocarbon

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515857A (en) * 1946-11-26 1950-07-18 Du Pont Compounds having a carboxyalkylthio or a carbalkoxyalkylthio group bonded to siliconthrough hydrocarbon

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392182A (en) * 1963-02-28 1968-07-09 Goldschmidt Ag Th Novel organosilicon compounds and process for their preparation
US3481962A (en) * 1964-07-30 1969-12-02 Bayer Ag Process for the production of organosiloxanes
US11014097B2 (en) * 2016-12-14 2021-05-25 Ecolab Usa Inc. Functionalized silicones for froth flotation

Also Published As

Publication number Publication date
GB688407A (en) 1953-03-04

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