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US4134725A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for the production of granules

Assignee: BASF Corp
•
Filing: 1977-05-19
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Granted: 1979-01-16
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Expires: 1997-05-19
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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)

US3882217A Cited
US3803283A Cited
US3872200A Cited

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

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