Patent US4417016A successfully refreshed from Google Patents.
US4417016A
Expired / Lapsed
US
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Frothing aid composition
Assignee: Para Chem Southern Inc
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Filing: 1982-02-19
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Granted: 1983-11-22
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Expires: 2002-02-19
Abstract
Abstract An improved frothing aid composition for use in combination with sodium polyacrylate viscosity regulator which consists about 70 to 99% by weight of a surfactant and from about 1 to 30% by weight of a thickener comprising a copolymer of acrylic or methacrylic acid with at least one copolymerizable monomer selected from the group consisting of alkyl acrylates or methacrylates having up to 6 carbons in the alkyl, vinylidene aromatic monomers and aliphatic conjugated diene monomers of 4-10 carbon atoms.
Inventors
- 👤 Charles D. Cline
- 👤 Thomas L. Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:06
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08K; C08K5/00; C08K5/0008; C08K5/0075
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
In a frothing aid composition for use in combination with sodium polyacrylate viscosity regulator, the improvement wherein the composition contains from about 1 to 30% by weight of an alkali-soluble thickener comprising a copolymer of acrylic or methacrylic acid with at least one copolymerizable monomer selected from the group consisting of alkyl acrylates or methacrylates having up to 6 carbons in the alkyl, vinylidene aromatic monomers and aliphatic conjugated diene monomers of 4-10 carbon atoms about 70 to 99% by weight of and a surfactant.
Claim 2
Dependent Claim
85 words
In a frothing aid composition for use in combination with sodium polyacrylate viscosity regulator, the improvement wherein the composition contains from about 1 to 30% by weight of an alkali-soluble thickener comprising a copolymer of acrylic or methacrylic acid with at least one copolymerizable monomer selected from the group consisting of alkyl acrylates or methacrylates having up to 6 carbons in the alkyl, vinylidene aromatic monomers and aliphatic conjugated diene monomers of 4-10 carbon atoms about 70 to 99% by weight of and a surfactant.
Claim 3
Dependent Claim
17 words
The composition of claim 1, wherein the copolymer contains 8-75% by weight of acrylic or methacrylic acid.
Claim 4
Dependent Claim
15 words
The composition of claim 1, wherein the copolymer is of methacrylic acid and ethyl acrylate.
Claim 5
Dependent Claim
15 words
The composition of claim 1, wherein the copolymer is of butadiene, styrene and methacrylic acid.
Claim 6
Dependent Claim
14 words
The composition of claim 1, wherein the copolymer is of styrene and acrylic acid.
Claim 7
Dependent Claim
12 words
The composition of claim 1, wherein the surfactant is sodium lauryl sulfate.
Claim 8
Dependent Claim
11 words
The composition of claim 1, wherein the surfactant is lauric diethanolamide.
Claim 9
Dependent Claim
12 words
The composition of claim 1, wherein the surfactant is an alpha-olefin sulfonate.
Claim 10
Dependent Claim
22 words
The composition of claim 1, wherein the surfactant and the thickener are admixed with up to 80% of sodium polyacrylate viscosity regulator.
Claim 11
Dependent Claim
41 words
The composition of claim 1, wherein the thickener is a copolymer of ethyl acrylate and methacrylic acid, the surfactant is sodium lauryl sulfate and the surfactant and thickener are admixed with up to 80% by weight of sodium polyacrylate viscosity regulator.
Claim 12
Dependent Claim
34 words
The composition of claim 1, consisting essentially of 15-30% by weight of thickener and 70-85% by weight of surfactant in the frothing aid composition, admixed with 70-80% by weight of sodium polyacrylate viscosity regulator.
Claim 13
Dependent Claim
24 words
The composition of claim 11, wherein the thickener is a copolymer of ethyl acrylate and methacrylic acid and the surfactant is sodium lauryl sulfate.
Claim 14
Dependent Claim
11 words
The composition of claim 1, wherein pH is adjusted to 8.0-9.5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |