Patent US4031022A successfully refreshed from Google Patents.
US4031022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Builders for detergent and cleaning compositions
Assignee: Hoechst AG
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Filing: 1976-03-02
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Granted: 1977-06-21
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Expires: 1996-03-02
Abstract
Abstract Builders for detergent and cleaning compositions. The builders comprise copolymers made from α-hydroxyacrylic acid and acrylic acid. The copolymers contain between 9 and 85 mol % of acrylic acid and have a relative viscosity within the range 0.05 and 1.0, determined on a 1 weight % solution of the copolymers in aqueous 2N-sodium hydroxide solution, at 20° C.
Inventors
- 👤 Wilhelm Vogt
- 👤 Eberhard Auer
- 👤 Gunter Lenz
- 👤 Karl Merkenich
- 👤 Klaus Henning
- 👤 Joachim Kandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:56
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3761; C11D1/00; C11D1/38; C11D1/42; C11D1/44; C11D1/52; C11D1/526; C11D1/66; C11D1/72; C11D1/74
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
Detergent and cleaning compositions in which the principal cleaning components are an anion-active, cationic, amphoteric, ampholytic or non-ionic surfactant and an organic builder consisting of a copolymer of alpha-hydroxyacrylic acid and acrylic acid, said copolymer having a specific viscosity within the range 0.05 and 1.0 determined on 1 weight % solution of the copolymer in aqueous 2N-sodium hydroxide solution at 20° C, and containing between about 9 and 85 mol % of acrylic acid and the said copolymer being present in the compositions in a proportion within the range 10 and 90 weight %.
Claim 2
Dependent Claim
94 words
Detergent and cleaning compositions in which the principal cleaning components are an anion-active, cationic, amphoteric, ampholytic or non-ionic surfactant and an organic builder consisting of a copolymer of alpha-hydroxyacrylic acid and acrylic acid, said copolymer having a specific viscosity within the range 0.05 and 1.0 determined on 1 weight % solution of the copolymer in aqueous 2N-sodium hydroxide solution at 20° C, and containing between about 9 and 85 mol % of acrylic acid and the said copolymer being present in the compositions in a proportion within the range 10 and 90 weight %.
Claim 3
Dependent Claim
25 words
The detergent and cleaning compositions as claimed in claim 1, wherein the builder is in a proportion within the range 20 and 60 weight %.
Claim 4
Dependent Claim
51 words
The detergent and cleaning compositions as claimed in claim 1, wherein the copolymer contains between 16 and 50 mol % of acrylic acid and has a relative viscosity within the range 0.1 and 0.8, determined on 1 weight % solution of the copolymer in aqueous 2N-sodium hydroxide solution, at 20° C.
Claim 5
Dependent Claim
20 words
The detergent and cleaning compositions as claimed in claim 1, wherein the builder is the water-soluble salt of the copolymer.
Claim 6
Dependent Claim
23 words
The detergent and cleaning compositions as claimed in claim 4, wherein the builder is the alkali metal or ammonium salt of the copolymer.
References Cited (Backward Citations)
US3950260A
Cited
US3627686A
Cited
US3706672A
Cited
US3839215A
Cited
US3922230A
Cited
US3890291A
Cited
US3904685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |