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US5133897A
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Emulsifiers for the preparation of aqueous polysiloxane emulsions and aqueous polysiloxane-paraffin oil emulsions with long shelf lives
Assignee: Sasol Germany GmbH
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Filing: 1990-07-30
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Granted: 1992-07-28
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Expires: 2010-07-30
Abstract
Abstract Stable aqueous emulsions of polysiloxane oil and polysiloxane-paraffin oil are disclosed. The emulsifiers are alkylpolyglycosides of the formula R-O-Zn wherein R represents a linear or branched, saturated or unsaturated alkyl radical having 8-16 carbon atoms, Zn represents an alkylolilgoglycoside radical and n is 1-5. The resulting aqueous polysiloxane emulsions and polysiloxane-paraffin oil emulsions have long shelf lives.
Inventors
- 👤 Dieter Balzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:44
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C10; C10M; C10M145/00; C10M145/40; C10M155/00; C10M155/02; C10M159/00; C10M159/02; C10M159/06; C10M173/00; C08J2383/00; C08J2383/04; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2209/00; C10M2209/12; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10M2229/051; C10M2229/052; C10M2229/053; C10M2229/054; C10N; C10N2050/00; C10N2050/01; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
66 words
An oil-water emulsion subjected to gentle shear forces comprising: water; one or more polysiloxane oils or a mixture of one or more polysiloxane oils and paraffin oils; and an alkylpolyglycoside of the formula I R -- O -- Z.sub.n (I) wherein R represents a linear or branched, saturated or unsaturated alkyl radical having 8-6 carbon atoms, Z n represents an oligoglycoside radical, and n is 1-5.
Claim 2
Dependent Claim
66 words
An oil-water emulsion subjected to gentle shear forces comprising: water; one or more polysiloxane oils or a mixture of one or more polysiloxane oils and paraffin oils; and an alkylpolyglycoside of the formula I R -- O -- Z.sub.n (I) wherein R represents a linear or branched, saturated or unsaturated alkyl radical having 8-6 carbon atoms, Z n represents an oligoglycoside radical, and n is 1-5.
Claim 3
Dependent Claim
29 words
The emulsion of claim 1, wherein R is a linear, saturated alkyl radical having 10-14 carbon atoms, Z n is an oligoglycoside radical, and n is 1.1 to 2.0.
Claim 4
Dependent Claim
21 words
The emulsion of claim 1, further comprising a coemulsifier selected from the group consisting of anionic, cationic, zwitterionic and non-ionic surfactants.
Claim 5
Dependent Claim
38 words
A method for preparing an oil-water emulsion of claim 1 comprising: dispersing an effective amount of an alkylpolyglycoside of the formula I in polysiloxane oil or a mixture of polysiloxane-paraffin oil; and admixing water using gentle shear forces.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-28 | 1996-01-27 | 1996-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-28 | 2000-01-27 | 2000-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-28 | 2004-01-27 | 2004-07-28 | $7700.00 | Window Closed / Lapsed |