Patent US4582874A successfully refreshed from Google Patents.
US4582874A
Expired / Lapsed
US
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Silicone resin emulsion
Assignee: Momentive Performance Materials GmbH
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Filing: 1984-06-21
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Granted: 1986-04-15
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Expires: 2004-06-21
Abstract
Abstract An aqueous emulsion, having a long shelf life, of a low molecular weight silicone resin comprising by weight (a) 1-60% of a silicone resin of the formula ##EQU1## wherein R 1 is a monovalent hydrocarbon radical having 1 -14C atoms, R 2 is a monovalent hydrocarbon radical having 1 -18C atoms, x has a value from about 0.75 to 1.5 and y has a value from about 0.2 to 2.0, and having a viscosity of about 2 to 2000 mPa.s, (b) 0.1-10% of an emulsifier, and (c) water. Advantageously two non-ionic emulsifiers are used in combination.
Inventors
- 👤 Wolfgang Grape
- 👤 Ottfried Schlak
- 👤 Helmut Steinberger
- 👤 Hermann Kober
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:18
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
An aqueous emulsion, having a long shelf life, of a low molecular weight silicone resin by weight consisting essentially of (a) 1-60% of a silicone resin of the formula ##EQU4## wherein R 1 is a monovalent hydrocarbon radical having 1-14 C atoms, R 2 is a monovalent hydrocarbon radical having 1-18 C atoms, x has a value from about 0.75 to 1.5 and y has a value from about 0.2 to 2.0, and having a viscosity of about 2 to 2000 mPa.s, (b) 0.1-10% of an emulsifier, and (c) water.
Claim 2
Dependent Claim
90 words
An aqueous emulsion, having a long shelf life, of a low molecular weight silicone resin by weight consisting essentially of (a) 1-60% of a silicone resin of the formula ##EQU4## wherein R 1 is a monovalent hydrocarbon radical having 1-14 C atoms, R 2 is a monovalent hydrocarbon radical having 1-18 C atoms, x has a value from about 0.75 to 1.5 and y has a value from about 0.2 to 2.0, and having a viscosity of about 2 to 2000 mPa.s, (b) 0.1-10% of an emulsifier, and (c) water.
Claim 3
Dependent Claim
39 words
An emulsion according to claim 1, in which (a) is present in about 20 to 50% by weight and has a viscosity of about 20 to 200 mPa.s and (b) is present in about 0.5 to 10% by weight.
Claim 4
Dependent Claim
27 words
An emulsion according to claim 1, in which R 1 is methyl, R 2 is methyl, x is about 1, and y is about 0.4 to 1.2.
Claim 5
Dependent Claim
19 words
An emulsion according to claim 1, wherein the emulsifier (b) comprises a combination of at least two non-ionic emulsifiers.
Claim 6
Dependent Claim
19 words
An emulsion according to claim 2, which (b) is a combination of POE(40)-triglyceride with POE(2)-oleyl alcohol and/or POE(6)-tridecyl alcohol.
Claim 7
Dependent Claim
40 words
An emulsion according to claim 2, in which R 1 is methyl, R 2 is methyl, x is about 1, and y is about 0.4 to 1.2, and (b) is a combination of POE(40)-triglyceride with POE(2)-oleyl alcohol and/or POE(6)-tricecyl alcohol.
Claim 8
Dependent Claim
31 words
In the coating or impregnation of a material with an aqueous silicone emulsion followed by drying, the improvement which comprises employing as the emulsion an aqueous emulsion according to claim 1.
Claim 9
Dependent Claim
33 words
In the rendering of a mineral-based material hydrophobic by applying thereto an aqueous silicone emulsion followed by drying, the improvement which comprises employing as the emulsion an aqueous emulsion according to claim 1.
References Cited (Backward Citations)
DE1069057B
Cited
US3668180A
Cited
DE2330887A1
Cited
EP0049365A2
Cited
EP0089784A2
Cited
US4476282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |