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US3869465A
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Dispersions of polymer fluorine-containing acrylic acid derivatives
Assignee: Hoechst AG
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Filing: 1973-08-02
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Granted: 1975-03-04
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Expires: 1993-08-02
Abstract
Abstract Aqueous emulsions and/or dispersions of polymer fluorinecontaining acrylic acid derivatives which contain, as emulsifiers or dispersing agents, Bunte salts with fluorinated alkyl groups, the salts having the formula
Inventors
- 👤 Karl Waldmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:46
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/22
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
22 words
AN AQUEOUS EMULSION OR DISPERSION OF A POLYMERIC ACRYLIC ACID DERIVATIVE CONSISTING ESSENTIALLY OF EQUAL OR DIFFERENT RECURRING UNITS OF THE FORMULA
Claim 2
Dependent Claim
22 words
AN AQUEOUS EMULSION OR DISPERSION OF A POLYMERIC ACRYLIC ACID DERIVATIVE CONSISTING ESSENTIALLY OF EQUAL OR DIFFERENT RECURRING UNITS OF THE FORMULA
Claim 3
Dependent Claim
17 words
An emulsion or dispersion as defined in claim 1, wherein L contains 1 or 2 methylene groups.
Claim 4
Dependent Claim
25 words
An emulsion or dispersion as defined in claim 1, wherein g is 1 or 2, e is 1, f is zero and g is 2.
Claim 5
Dependent Claim
15 words
An emulsion or dispersion as defined in claim 1, wherein a is 6 to 12.
Claim 6
Dependent Claim
15 words
An emulsion or dispersion as defined in claim 1, wherein a is 6 to 10.
Claim 7
Dependent Claim
13 words
An emulsion or dispersion as defined in claim 1, wherein X is fluorine.
Claim 8
Dependent Claim
38 words
An emulsion or dispersion as defined in claim 1, wherein said Bunte salt has the formula X-CaF2a-L'' -S2O3M in which X, M and a are as defined in claim 1 and L'' stands for -CH2-CH2-O-CO-NH-CH2-CH2-, -CH2-O-CO-NH-CH2-CH2-, -CO-NH-CH2-CH2-, -SO2-NH-CH2-CH2-,
Claim 9
Dependent Claim
27 words
An emulsion or dispersion as defined in claim 1, wherein G1 is hydrogen or methyl, G2 is hydrogen and L is -CH2-O-, -CH2-CH2-O-, -CH2-NH-, -SO2-N(CH3)-CH2-CH2-O- or -CO-NH-CH2-CH2-O-.
Claim 10
Dependent Claim
28 words
An emulsion or dispersion as defined in claim 1, wherein the Bunte salt has the formula F-CaF2a-CH2-CH2-O-CO-NH-CH2-CH2-S2O3M, in which a and M are as defined in claim 1.
Claim 11
Dependent Claim
28 words
An emulsion or dispersion as defined in claim 1, wherein the Bunte salt has the formula F-CaF2a-CO-NH-CH2-CH2-S2O3M in which a and M are as defined in claim 1.
Claim 12
Dependent Claim
28 words
An emulsion or dispersion as defined in claim 1, wherein the Bunte salt has the formula F-CaF2a-SO2-NH-CH2-CH2-S2O3M in which a and M are as defined in claim 1.
References Cited (Backward Citations)
US2925362A
Cited
US3378609A
Cited
US3238235A
Cited
US3364247A
Cited
US3575940A
Cited
US3547856A
Cited
US3686281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |