US4637894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activator of peroxo compounds
Assignee: TUKOVY PRUMYSL
•
Filing: 1985-02-28
•
Granted: 1987-01-20
•
Expires: 2005-02-28
Abstract
Abstract The present invention relates to an activator of peroxo compounds, its method of manufacture, and its method of use. The activator is useful as an additive to textile cleansing and disinfecting agents that contain peroxo compounds. The invention permits the bleaching and disinfecting of textiles at temperatures between 25° C. and 60° C. The activator comprises a combination of the following compounds, by weight: (a) phthalic anhydride (4-98%); (b) N-acetylphthalimide (2-96%); (c) phthalimide (0.1-28%); (d) stabilizer (0.2-25%) and/or (e) soluble polymer (0.2-12%); wherein the stabilizer is an aliphatic carboxylic acid having from 12-22 carbon atoms, the polymer is soluble in water or in organic solvents, and the particle size of the final activator composition is from 0.1 to 3.5 mm. The activator component mixture is converted into particles spraying the molten liquid through a nozzle or atomizer in a cooling tower, or by solidification in a fluid bed, or by grinding of the melt after solidification on cooling rollers.
Inventors
- 👤 Jan Smidrkal
- 👤 Jaroslav Simunek
- 👤 Jiri Tolman
- 👤 Jiri Soucek
- 👤 Alois Novacek
- 👤 Jan Novak
- 👤 Vaclav Krob
- 👤 Pavel Kovar
- 👤 Miroslav Klofec
- 👤 Bohumir Vondracek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:59
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3935; C11D3/3907
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
26 words
An activator of peroxo compounds comprising from 4 to 98 percent by weight of phthalic anhydride and from 2 to 96 percent by weight of N-acetylphthalimide.
Claim 2
Dependent Claim
26 words
An activator of peroxo compounds comprising from 4 to 98 percent by weight of phthalic anhydride and from 2 to 96 percent by weight of N-acetylphthalimide.
Claim 3
Dependent Claim
17 words
An activator as in claim 1 further comprising from 0.1 to 28 percent by weight of phthalimide.
Claim 4
Dependent Claim
33 words
An activator as in claim 1 further comprising from 0.2 to 25 percent by weight of a stabilizer chosen from the group consisting of aliphatic carboxylic acids having 12 to 22 carbon atoms.
Claim 5
Dependent Claim
22 words
An activator as in claim 1 wherein the components are combined into particles having a diameter of from 0.1 to 3.5 millimeters.
Claim 6
Dependent Claim
63 words
An activator of peroxo compounds in particle form comprising, by weight, from 4-98 percent phthalic anhydride, from 2-96 percent N-acetylphthalimide, from 0.1 to 28 percent phthalimide, from 0.2 to 25 percent stabilizer selected from the group consisting of aliphatic carboxylic acids having 12 to 22 carbon atoms, and 0.2-12 percent soluble polymer; the activator particles having a diameter of 0.1 to 3.5 millimeters.
Claim 7
Dependent Claim
63 words
An activator of peroxo compounds in particle form comprising, by weight, from 4-98 percent phthalic anhydride, from 2-96 percent N-acetylphthalimide, from 0.1 to 28 percent phthalimide, from 0.2 to 25 percent stabilizer selected from the group consisting of aliphatic carboxylic acids having 12 to 22 carbon atoms, and 0.2-12 percent soluble polymer; the activator particles having a diameter of 0.1 to 3.5 millimeters.
Claim 8
Independent Claim
111 words
A method of activating peroxo compounds for use as a solid clensing agent comprising the step of combining an activator comprising, by weight, from 4-98 percent phthalic anhydride, from 2-96 percent N-acetylphthalimide, from 0.1 to 28 percent phthalimide, from 0.2 to 25 percent stabilizer selected from the group consisting of aliphatic carboxylic acids having 12 to 22 carbon atoms, and 0.2-12 percent soluble polymer; the activator particles having a diameter of 0.1 to 3.5 millimeters; with at least one peroxo compound selected from the group consisting of sodium perborate, sodium percarbonate, peroxourea, and hydrogen peroxide; in an amount ranging from 0.2 to 98 grams of activator per gram of active oxygen.
Claim 9
Independent Claim
111 words
A method of activating peroxo compounds for use as a solid clensing agent comprising the step of combining an activator comprising, by weight, from 4-98 percent phthalic anhydride, from 2-96 percent N-acetylphthalimide, from 0.1 to 28 percent phthalimide, from 0.2 to 25 percent stabilizer selected from the group consisting of aliphatic carboxylic acids having 12 to 22 carbon atoms, and 0.2-12 percent soluble polymer; the activator particles having a diameter of 0.1 to 3.5 millimeters; with at least one peroxo compound selected from the group consisting of sodium perborate, sodium percarbonate, peroxourea, and hydrogen peroxide; in an amount ranging from 0.2 to 98 grams of activator per gram of active oxygen.
Claim 10
Independent Claim
112 words
A method of activating peroxo compounds for use as a liquid clensing agent comprising the step of combining an activator comprising, by weight, from 4-98 percent phthalic anhydride, from 2-96 percent N-acetylphthalimide, from 0.1 to 28 percent phthalimide, from 0.2 to 25 percent stabilizer selected from the group consisting of aliphatic carboxylic acids having 12 to 22 carbon atoms, and 0.2-12 percent soluble polymer; the activator particles having a diameter of 0.1 to 3.5 millimeters; with at least one peroxo compound selected from the group consisting of sodium perborate, sodium percarbonate, peroxourea, and hydrogen peroxide; where the amount of active oxygen ranges from 2 to 500 mg per liter of clensing agent.
Claim 11
Independent Claim
112 words
A method of activating peroxo compounds for use as a liquid clensing agent comprising the step of combining an activator comprising, by weight, from 4-98 percent phthalic anhydride, from 2-96 percent N-acetylphthalimide, from 0.1 to 28 percent phthalimide, from 0.2 to 25 percent stabilizer selected from the group consisting of aliphatic carboxylic acids having 12 to 22 carbon atoms, and 0.2-12 percent soluble polymer; the activator particles having a diameter of 0.1 to 3.5 millimeters; with at least one peroxo compound selected from the group consisting of sodium perborate, sodium percarbonate, peroxourea, and hydrogen peroxide; where the amount of active oxygen ranges from 2 to 500 mg per liter of clensing agent.
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) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |