US4970017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of granular detergent composition having high bulk density
Assignee: Lion Corp
•
Filing: 1988-12-16
•
Granted: 1990-11-13
•
Expires: 2008-12-16
Abstract
Abstract A process for producing a granular detergent composition having a high bulk density comprising the steps of: (i) kneading detergent ingredients to form a kneaded solid detergent mixture; (ii) disintegrating the solid detergent mixture; and (iii) coating the disintegrated granular detergent composition with water-insoluble finely divided powder particles having an average primary particle diameter of 10 μm or less.
Inventors
- 👤 Masayoshi Nakamura
- 👤 Noboru Hara
- 👤 Kazuo Nagoh
- 👤 Yuji Tai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:54
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/06; C11D17/065; C11D17/0039
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A process for producing a granular detergent composition having a high bulk density comprising the steps of: (i) kneading detergent ingredients containing at least 10% by weight of potassium alkylaryl sulfonate to form a kneaded solid detergent mixture; (ii) disintegrating the kneaded solid detergent mixture; and subsequently (iii) coating the disintegrated granular detergent composition with 0.5% to 5% by weight, based on the weight of the disintegrated detergent composition, of water-insoluble finely divided powder particles having an average primary particle diameter of 10 μm or less.
Claim 2
Dependent Claim
86 words
A process for producing a granular detergent composition having a high bulk density comprising the steps of: (i) kneading detergent ingredients containing at least 10% by weight of potassium alkylaryl sulfonate to form a kneaded solid detergent mixture; (ii) disintegrating the kneaded solid detergent mixture; and subsequently (iii) coating the disintegrated granular detergent composition with 0.5% to 5% by weight, based on the weight of the disintegrated detergent composition, of water-insoluble finely divided powder particles having an average primary particle diameter of 10 μm or less.
Claim 3
Dependent Claim
25 words
A process as claimed in claim 1, wherein said alkylaryl sulfonate is an lkylbenzene sulfonate having an alkyl group with 8 to 18 carbon atoms.
Claim 4
Dependent Claim
21 words
A process as claimed in claim 1, wherein the average particle diameter of the disintegrated detergent composition is 300 2000 μm.
Claim 5
Dependent Claim
35 words
A process as claimed in claim 1, wherein the water-insoluble finely divided powder particles are those derived from calcium stearate, magnesium stearate, alumino silicate, calcium carbonate, magnesium carbonate, magnesium silicate, silicon dioxide, or titanium dioxide.
Claim 6
Dependent Claim
47 words
A process for preparing a granular detergent composition as claimed in claim 1, wherein the disintegrated granular detergent composition is treated in a circulating gas stream along the inner wall of a vessel for a time sufficient to increase the bulk density of the granular detergent composition.
Claim 7
Dependent Claim
150 words
A process for producing a granular detergent composition having a high bulk density comprising the steps of: (i) kneading detergent ingredients containing 30% to 60% by weight of a surfactant including at least 10% by weight of an olefin sulfonate and 35% to 55% by weight of an alkali builder including 1% to 15% by weight of a silicate having a ratio of Na 2 O to SiO 2 to 3.5, the content of potassium in the form of the potassium salts being 1.5% to 50% by weight of the total amount of the surfactant to form a kneaded solid detergent mixture. (ii) disintegrating the kneaded solid detergent mixture; and subsequently (iii) coating the disintegrated granular detergent composition with 0.5% to 5% by weight, based on the weight of the disintegrated detergent composition, of water-insoluble finely divided powder particles having an average primary particle diameter of 10 μm or less.
Claim 8
Dependent Claim
150 words
A process for producing a granular detergent composition having a high bulk density comprising the steps of: (i) kneading detergent ingredients containing 30% to 60% by weight of a surfactant including at least 10% by weight of an olefin sulfonate and 35% to 55% by weight of an alkali builder including 1% to 15% by weight of a silicate having a ratio of Na 2 O to SiO 2 to 3.5, the content of potassium in the form of the potassium salts being 1.5% to 50% by weight of the total amount of the surfactant to form a kneaded solid detergent mixture. (ii) disintegrating the kneaded solid detergent mixture; and subsequently (iii) coating the disintegrated granular detergent composition with 0.5% to 5% by weight, based on the weight of the disintegrated detergent composition, of water-insoluble finely divided powder particles having an average primary particle diameter of 10 μm or less.
Claim 9
Dependent Claim
47 words
A process for preparing a granular detergent composition as claimed in claim 6, wherein the disintegrated granular detergent composition is treated in a circulating gas stream along the inner wall of a vessel for a time sufficient to increase the bulk density of the granular detergent composition.
References Cited (Backward Citations)
US3933670A
Cited
US4347152A
Cited
US4397777A
Cited
US4196095A
Cited
US4261941A
Cited
US4228025A
Cited
US4487710A
Cited
US4582615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-12 | 1994-05-14 | 1994-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-12 | 1998-05-14 | 1998-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-12 | 2002-05-14 | 2002-11-13 | $7700.00 | Window Closed / Lapsed |