Patent US4983316A successfully refreshed from Google Patents.
US4983316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersible silicone antifoam formulations
Assignee: Dow Silicones Corp
•
Filing: 1988-08-04
•
Granted: 1991-01-08
•
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 10:14
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.
References Cited (Backward Citations)
US3784479A
Cited
FR2285453A1
Cited
US3984347A
Cited
US4075118A
Cited
DE2832679A1
Cited
US4318818A
Cited
US4400288A
Cited
EP0091802A1
Cited
US4597898A
Cited
US4514319A
Cited
US4507219A
Cited
US4732694A
Cited
US4515705A
Cited
US4639489A
Cited
US4749740A
Cited
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 |