GB793501A - Oil-in-water emulsions - Google Patents

Oil-in-water emulsions

Info

Publication number
GB793501A
GB793501A GB20720/56A GB2072056A GB793501A GB 793501 A GB793501 A GB 793501A GB 20720/56 A GB20720/56 A GB 20720/56A GB 2072056 A GB2072056 A GB 2072056A GB 793501 A GB793501 A GB 793501A
Authority
GB
United Kingdom
Prior art keywords
water
polyalkylene glycol
xylene
toluene
mol
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
Application number
GB20720/56A
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.)
Midland Silicones Ltd
Original Assignee
Midland Silicones Ltd
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 Midland Silicones Ltd filed Critical Midland Silicones Ltd
Priority to GB20720/56A priority Critical patent/GB793501A/en
Publication of GB793501A publication Critical patent/GB793501A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
    • C09K23/54—Silicon compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Silicon Polymers (AREA)

Abstract

A solution of a water-insoluble substance in a water-immiscible organic solvent is emulsified in water using as emulsifying agent a dimethyl-silicon ester of a polyalkylene glycol; the ester has 5 to 95 mol. per cent -(CH3)2SiO- units and 95 to 5 mol. per cent polyalkylene glycol residue units. The water-insoluble substance may be an organosiloxane of unit general formula <FORM:0793501/III/1> where R is a monovalent hydrocarbon or halogenated hydrocarbon radical and n has an average value of 1 to 3 (see Group IV (a). Other water-insoluble substances referred to are hydrocarbon oils, polyesters, waxes and drying oils. Suitable organic solvents are benzene, toluene, xylene, naphtha, diethyl ether, dibutyl ether, ethyl acetate, butyl acetate, chlorobenzene, methylene chloride, and carbon tetrachloride. In examples, emulsifying agents are prepared by reaction of polyethylene glycol or polypropylene glycol with dimethylsiloxane cyclic tetramer in the presence of toluene and potassium or sodium hydroxide. These agents are used to prepare aqueous emulsions of linseed oil in xylene, carnauba wax in Stoddard solvent, and a liquid resinous siloxane copolymer in xylene.ALSO:A solution of an organosiloxane in a water-immiscible organic solvent is emulsified in water using as emulsifying agent a dimethylsilicon ester of a polyalkylene glycol, which ester has 5 to 95 mol. per cent -(CH3)2SiO- units and 95 to 5 mol. per cent polyalkylene glycol residue units. The organosiloxane has the unit general formula <FORM:0793501/IV (a)/1> , wherein R is a monovalent hydrocarbon or halogenated hydrocarbon radical and n has an average value of 1 to 3; R may be methyl, ethyl, butyl, octadecyl, vinyl, allyl, hexenyl, phenyl, naphthyl, xenyl, cyclopentyl, cyclohexyl, cyclohexenyl, tolyl, xylyl, benzyl, trichloromethyl, perfluoroethyl, dibromotrichlorophenyl, chlorofluorocyclopentyl, chloromethylphenyl, or iodobenzyl. Suitable organic solvents are benzene, toluene, xylene, naphtha, diethyl ether, dibutyl ether, ethyl acetate, butyl acetate, chlorobenzene, methylene chloride, and carbon tetrachloride. The emulsifying agent can be prepared by esterification of a dimethylpolysiloxane with a polyalkylene glycol, by transesterification of alkoxy-dimethylsilanes with a polyalkylene glycol, or by esterification of dimethyldihalosilanes with a polyalkylene glycol. In examples, emulsifying agents are prepared by reaction of polyethylene glycol or polypropylene glycol with dimethylsiloxane cyclic tetramer in the presence of toluene and sodium or potassium hydroxide. An aqueous emulsion of a liquid resinous siloxane copolymer in xylene is formed, the copolymer comprising monophenylsiloxane, monomethylsiloxane, and diphenylsiloxane.
GB20720/56A 1956-06-04 1956-06-04 Oil-in-water emulsions Expired GB793501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB20720/56A GB793501A (en) 1956-06-04 1956-06-04 Oil-in-water emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20720/56A GB793501A (en) 1956-06-04 1956-06-04 Oil-in-water emulsions

Publications (1)

Publication Number Publication Date
GB793501A true GB793501A (en) 1958-04-16

Family

ID=22149975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20720/56A Expired GB793501A (en) 1956-06-04 1956-06-04 Oil-in-water emulsions

Country Status (1)

Country Link
GB (1) GB793501A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059037A1 (en) * 1981-02-23 1982-09-01 Dow Corning Corporation Invert emulsions for well-drilling comprising a polydiorganosiloxane and method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059037A1 (en) * 1981-02-23 1982-09-01 Dow Corning Corporation Invert emulsions for well-drilling comprising a polydiorganosiloxane and method therefor

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