Patent US4134725A successfully refreshed from Google Patents.
US4134725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of granules
Assignee: BASF Corp
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Filing: 1977-05-19
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Granted: 1979-01-16
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Expires: 1997-05-19
Abstract
Abstract An improved process for the production of granules, comprising application of a granulating liquid to a pulverulent substance being subjected to a rotating movement in such an amount that the point of equilibrium between the moisture content of the substance and that of the air is exceeded, and subsequently drying this moist substance until its moisture content falls to or below this point of equilibrium.
Inventors
- 👤 Urs Buchel
- 👤 Hans Mollet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:30
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/12; A; A61; A61K; A61K9/00; A61K9/14; A61K9/16; B01J2/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
180 words
A solid granulate consisting essentially of 45 to 99.5% by weight of an organic substance and 0.1 to 50% by weight of additives and the remainder moisture, manufactured by a process comprising the steps of (a) applying a granulating liquid, containing 0.1 to 50% by weight relative to the granulating liquid of at least one granulating assistant selected from the group consisting of a wetting agent, a dispersing agent, a binding agent and a solubility improving agent, to a pulverulent organic substance, which is subjected to a tumbling or rolling rotating movement, said granulating liquid being applied to such an amount that the point of equilibrium between the moisture content of the substance and that of the air is exceeded, and is from 5% to 300% by weight relative to the pulverulent substance, to uniformly moisten said pulverulent organic substance and dissolve the surface of the particles of the substance, thereby forming a moist granulate thereof; and (b) subsequently drying the moist granulate until its moisture content falls to or below said point of equilibrium to form said solid granulate.
Claim 2
Dependent Claim
180 words
A solid granulate consisting essentially of 45 to 99.5% by weight of an organic substance and 0.1 to 50% by weight of additives and the remainder moisture, manufactured by a process comprising the steps of (a) applying a granulating liquid, containing 0.1 to 50% by weight relative to the granulating liquid of at least one granulating assistant selected from the group consisting of a wetting agent, a dispersing agent, a binding agent and a solubility improving agent, to a pulverulent organic substance, which is subjected to a tumbling or rolling rotating movement, said granulating liquid being applied to such an amount that the point of equilibrium between the moisture content of the substance and that of the air is exceeded, and is from 5% to 300% by weight relative to the pulverulent substance, to uniformly moisten said pulverulent organic substance and dissolve the surface of the particles of the substance, thereby forming a moist granulate thereof; and (b) subsequently drying the moist granulate until its moisture content falls to or below said point of equilibrium to form said solid granulate.
Claim 3
Dependent Claim
13 words
The granulate according to claim 1, wherein the pulverulent substance is a dyestuff.
Claim 4
Dependent Claim
35 words
The granulate according to claim 1, wherein the pulverulent substance is selected from the group consisting of a pigment, an optical brightener, a textile auxiliary, a synthetic detergent, a plastics additive and a polymeric substance.
Claim 5
Dependent Claim
29 words
The granulate according to claim 1, wherein the pulverulent substance is selected from the group consisting of an animal feed, a pesticide, a plant protection product and a herbicide.
Claim 6
Dependent Claim
25 words
The granulate according to claim 1, wherein the pulverulent substance is selected from the group consisting of a pharmaceutical product, an antimicrobic and bacteriostatic substance.
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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |