US4983316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersible silicone antifoam formulations
Assignee: Dow Silicones Corp
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Filing: 1988-08-04
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Granted: 1991-01-08
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Expires: 2008-08-04
Abstract
Abstract A dispersible silicone antifoam composition for providing controlled foaming liquid laundry detergent formulations and wherein there is provided a non-aqueous emulsion of primary and secondary silicone antifoam agents, at least one nonionic silicone surfactant for emulsifying the primary and secondary antifoam agents in a solvent, a first organic surfactant dispersing agent for assisting in dispersing the emulsified primary and secondary antifoam agents in the liquid laundry detergent, and a second dispersing agent of a nonionic difunctional block-copolymer terminating in primary hydroxyl groups for further assisting in dispersing the emulsified primary and secondary anitfoam agents in the liquid laundry detergent.
Inventors
- 👤 Michael S. Starch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:51
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/08; C11D3/16; C11D3/37; C11D3/3703; C11D3/373; C11D3/3738; C11D1/00; C11D1/66; C11D1/82; C11D3/0005; C11D3/0026
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
In a liquid laundry detergent containing surfactants, builders, and at least one foam control agent the improvement comprising a dispersible silicone antifoam composition for providing controlled foaming of the laundry detergent comprised of a non aqueous emulsion of primary and secondary antifoam agents, the primary antifoam agent being a mixture of (a) a polyorganosiloxane, (b) a resinous siloxane or a silicone resin-producing silicon compound, (c) a finely divided filler material, and (d) a catalyst to promote the reaction of mixture components (a), (b), and (c), to form silanolates, the secondary antifoam agent being a polydimethysiloxane fluid, at least one nonionic silicone surfactant, a first organic surfactant dispersing agent, and a second dispersing agent of a nonionic difunctional block-copolymer terminating in primary hydroxyl groups.
Claim 2
Dependent Claim
123 words
In a liquid laundry detergent containing surfactants, builders, and at least one foam control agent the improvement comprising a dispersible silicone antifoam composition for providing controlled foaming of the laundry detergent comprised of a non aqueous emulsion of primary and secondary antifoam agents, the primary antifoam agent being a mixture of (a) a polyorganosiloxane, (b) a resinous siloxane or a silicone resin-producing silicon compound, (c) a finely divided filler material, and (d) a catalyst to promote the reaction of mixture components (a), (b), and (c), to form silanolates, the secondary antifoam agent being a polydimethysiloxane fluid, at least one nonionic silicone surfactant, a first organic surfactant dispersing agent, and a second dispersing agent of a nonionic difunctional block-copolymer terminating in primary hydroxyl groups.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein the nonionic silicone surfactant is a trimethylsilyl endcapped polysilicate which has been condensed with a polyalkylene glycol or diester in a solvent.
Claim 4
Dependent Claim
18 words
The composition of claim 2 wherein the secondary antifoam agent has a viscosity of about one thousand centistokes.
Claim 5
Dependent Claim
11 words
The composition of claim 3 wherein the solvent is polypropylene glycol.
Claim 6
Dependent Claim
16 words
The composition of claim 4 wherein the block copolymer is an ethylene oxide-propylene oxide block copolymer.
Claim 7
Dependent Claim
102 words
A dispersible silicone antifoam composition for providing controlled foaming aqueous medium formulations comprising a non-aqueous emulsion of primary and secondary antifoam agents, the primary antifoam agent being a mixture of (a) a polyorganosiloxane, (b) a resinous siloxane or a silicone resin-producing silicon compound, (c) a finely divided filler material, and (d) a catlyst to promote the reaction of mixture components (a), (b), and (c), to form silanolates, the secondary antifoam agent being a polydimethysiloxane fluid, at least one nonionic silicone surfactant, a first organic surfactant dispersing agent, and a second dispersing agent of a nonionic difunctional block-copolymer terminating in primary hydroxyl groups.
Claim 8
Dependent Claim
102 words
A dispersible silicone antifoam composition for providing controlled foaming aqueous medium formulations comprising a non-aqueous emulsion of primary and secondary antifoam agents, the primary antifoam agent being a mixture of (a) a polyorganosiloxane, (b) a resinous siloxane or a silicone resin-producing silicon compound, (c) a finely divided filler material, and (d) a catlyst to promote the reaction of mixture components (a), (b), and (c), to form silanolates, the secondary antifoam agent being a polydimethysiloxane fluid, at least one nonionic silicone surfactant, a first organic surfactant dispersing agent, and a second dispersing agent of a nonionic difunctional block-copolymer terminating in primary hydroxyl groups.
Claim 9
Dependent Claim
28 words
The composition of claim 6 wherein the nonionic silicone surfactant is a trimethylsilyl endcapped polysilicate which has been condensed with a polyalkylene glycol or diester in a solvent.
Claim 10
Dependent Claim
17 words
The composition of claim 7 wherein the secondary antifoam has a viscosity of about one thousand centistokes.
Claim 11
Dependent Claim
11 words
The composition of claim 8 wherein the solvent is polypropylene glycol.
Claim 12
Dependent Claim
16 words
The composition of claim 9 wherein the block copolymer is an ethylene oxide-propylene oxide block copolymer.
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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) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |