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EP0276114A2
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Zwitteronic polysiloxane compositions
Assignee: Dow Silicones Corp
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Filing: 1988-01-19
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Granted: —
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Expires: 2008-01-19
Abstract
Abstract A zwitterionic composition useful as a surface active agent in aqueous solutions. Said composition represented by the general formula Rʹ(CH₃)₂Si-O[SiO(CH₃)₂] w [SiCH₃R-O] x Si(CH₃)₂Rʹ where w is 0, to 50, x is 1, 2, 3, 4 or 5, Rʹ denotes a methyl radical or an R radical, x + w is less than or equal to 50 and R denotes a monovalent zwitterionic radical of the general formula -(CH₂) y N⁺(Rʺ)₂(CH₂) z SO₃⁻ where y is 1, 2 or 3, z is 3 or 4, and Rʺ denotes an alkyl radical with 1 to 6 carbon atoms.
Inventors
- 👤 William Neal Fenton
- 👤 Michael James Owen
- 👤 Steven Ashley Snow
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 09:15
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C09; C09K; C09K23/00; C09K23/54; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07; Y10S516/905; Y10S516/906
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
A composition represented by the general formula Rʹ(CH₃)₂SiO[Si(CH₃)₂O] w [SiCH₃RO] x Si(CH₃)₂Rʹ where w is 0 to about 50, x is 0, 1, 2, 3, 4, or 5, the sum of x + w is less than or equal to about 50, Rʹ denotes a methyl radical or an R radical, the molecule has at least one R radical, and R denotes a monovalent zwitterionic radical of the general formula -(CH₂) y N⁺ (Rʺ)₂(CH₂) z SO₃⁻ where y is 1,2, or 3, z is 3 or 4 and Rʺ denotes an alkyl radical with 1 to 5 carbon atoms.
Claim 2
Dependent Claim
99 words
A composition represented by the general formula Rʹ(CH₃)₂SiO[Si(CH₃)₂O] w [SiCH₃RO] x Si(CH₃)₂Rʹ where w is 0 to about 50, x is 0, 1, 2, 3, 4, or 5, the sum of x + w is less than or equal to about 50, Rʹ denotes a methyl radical or an R radical, the molecule has at least one R radical, and R denotes a monovalent zwitterionic radical of the general formula -(CH₂) y N⁺ (Rʺ)₂(CH₂) z SO₃⁻ where y is 1,2, or 3, z is 3 or 4 and Rʺ denotes an alkyl radical with 1 to 5 carbon atoms.
Claim 3
Dependent Claim
75 words
A composition represented by the general formula Rʹ(CH₃)₂SiO[Si(CH₃)₂O] w [SiCH₃RO] x Si(CH₃)₂Rʹ where w is 0, 1, 2, or 3, x is 0, 1 or 2, Rʹ denotes a methyl radical or an R radical, and R denotes a monovalent zwitterionic radical of the general formula -(CH₂) y N⁺(Rʺ)₂(CH₂) z SO₃ where y is 1, 2, or 3, z is 3 or 4 and Rʺ denotes an alkyl radical with 1 to 5 carbon atoms.
Claim 4
Dependent Claim
75 words
A composition represented by the general formula Rʹ(CH₃)₂SiO[Si(CH₃)₂O] w [SiCH₃RO] x Si(CH₃)₂Rʹ where w is 0, 1, 2, or 3, x is 0, 1 or 2, Rʹ denotes a methyl radical or an R radical, and R denotes a monovalent zwitterionic radical of the general formula -(CH₂) y N⁺(Rʺ)₂(CH₂) z SO₃ where y is 1, 2, or 3, z is 3 or 4 and Rʺ denotes an alkyl radical with 1 to 5 carbon atoms.
Claim 5
Dependent Claim
24 words
A composition comprising water and a sufficient amount of the composition of claim 1 to lower the surface tension of the resulting aqueous solution.
Claim 6
Dependent Claim
36 words
A method for lowering the surface tension of an aqueous solution which comprises adding a sufficient quantity of the composition of claim 1 to an aqueous solution to lower the surface tension of the resulting solution.
Claim 7
Dependent Claim
15 words
An emulsion comprising; an oil phase, an aqueous phase, and the composition of claim 1.
References Cited (Backward Citations)
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