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Low-density compositions and particulates including same

A technology of low density and composition, applied in the preparation of detergent mixture composition, detergent composition, inorganic/element cleaning composition, etc., can solve the problem of increasing product cost and volume, visual unevenness of final product, washing/ Cleaning performance does not work, etc.

Inactive Publication Date: 2002-02-20
GENENCOR INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such materials add to the cost and bulk of the product and have no effect on the washing / cleaning performance of such detergent compositions
Furthermore, it should also be noted that known enzyme granules are generally not suitable for use in typical liquid detergents, as such granules often have unacceptably high densities (e.g. 1.45 g / cm 3 or higher), which would cause them to fall out of suspension in a relatively short period of time (i.e., much less than the typical product shelf life)
[0015] Another problem associated with particles in liquids is that particles have been observed to cause visual non-uniformity in the final product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] disc coated core

[0078] Sieve 50kg of independent gem-like particles into 35-40 standard mesh meshes and load them into a 350L pan coater. The pan is rotated and the product is heated to about 50°C. Approximately 1535 grams of sucrose syrup (62.5% w / w) was sprayed onto the individual gemstone particles until they were thoroughly wetted. 432 grams of borosilicate hollow spheres (Q-cel 6042S, manufactured by PQ Corporation) were added to the pan and dispersed among the individual gem-like particles. The disc was spun until the individual gemstones were sufficiently dried. This operation of adding components and drying was repeated 40 more times. After 41 additions, the particles were divided into two identical coating pans.

[0079] Each pan was sprayed with 1535 grams of sucrose syrup. Then 640 grams of hollow spheres are added. This addition operation was performed 18 times in each disk. Next, 23 more hollow sphere additions were made to each pan, each addition...

Embodiment 2

[0086] The following dry ingredients were blended in a Hobard mixer: a) 600 grams of borosilicate hollow spheres (Q-cel 6042S) b) 1050 grams of yellow dent cornstarch c) 600 grams of cellulose fibers (Arbosel 600-30 ) d) 360 mg lactose e) 300 g high MW polyethylene glycol (PEG 3350 from Dow) f) 36 g low MW polyethylene glycol (PEG 2200 from Dow) g) 39 g polyvinylpyrrolidine (from Luviskol K-30 from BASF)

[0087] To this dry blend was slowly incorporated 1615 grams of water to produce a suitable extruded dough. The dough was then extruded into strips using a 0.8mm die. The extruded strands are further granulated in one step to produce roughly spherical granules.

[0088] 695 grams of low density one-step granulation granules were charged to a Vector FL-1 fluidized bed sprayer and fluidized with 65 CFM 85°C fluidizing air. To this end, 1710 g of a 17% w / w total solids solution containing 25 g polyvinylpyrrolidine and 1685 g liquid enzyme concentrate (containing 7.4% alkaline p...

Embodiment 3

[0091] The following dry ingredients were blended in a Hobard mixer: a) 600 grams of borosilicate hollow spheres (Q-cel 6042S) b) 1050 grams of yellow dent cornstarch c) 600 grams of cellulose fibers (Arbosel 600-30 ) d) 360 mg lactose e) 300 g high MW polyethylene glycol (PEG 3350 from Dow) f) 36 g low MW polyethylene glycol (PEG 2200 from Dow) g) 39 g polyvinylpyrrolidine (from Luviskol K-30 from BASF)

[0092] To this dry blend was slowly incorporated 2413 grams of a solution containing 11.4% alkaline protease to produce a suitable extruded dough. The dough was then extruded into strips using a 0.8mm die. The extruded strands are further granulated in one step to produce roughly spherical granules.

[0093] 952 grams of low density enzyme one-step granulation granules were charged to a Vector FL-1 fluidized bed sprayer and fluidized with 65 CFM 85°C fluidizing air. For this, 1318 g of a 25% w / w total solids solution containing 66 g of lecithin (Ultralec-G from ADM) and 2...

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Abstract

The present invention provides low-density compositions, as well as particulates formed, at least in part, from such compositions. Preferred low-density materials include, for example, hollowspheres, low-density minerals, and low-density wood materials (e.g., sawdust). The low-density compositions of the invention can be formed as particulates, or cores, suitable for use in forming enzyme granules, e.g., marums, layered granules, prills, drum granules, agglomerated granules, or the like. Granules are disclosed having advantageous properties, e.g., low dusting, storage stable, fast enzyme-release profile, low true density, etc. The granules of the invention are especially useful, for example, in liquid detergents and cleaners, such as predominantly aqueous, liquid laundry detergents. In one embodiment, granules are provided having a true, or volumetric, density within a range of from about 0.95 to about 1.4 g / cm<3>. The granules can be economically produced in commercial quantities by way of a marumerization, drum granulation, fluid-bed spray-coating, pan-coating, or other suitable process.

Description

field of invention [0001] The present invention relates to low density compositions and particles formed at least in part from such compositions. More specifically, the present invention provides low density compositions comprising nonporous or minimally porous low density materials. Particles formed from the low density compositions of the present invention are particularly useful as cores for enzyme particles. Background of the invention [0002] The use of proteins [eg, pharmaceutically important proteins such as hormones, and industrially important proteins such as enzymes] has been growing rapidly in recent years. Today, for example, enzymes are used especially in the starch, dairy and detergent industries. [0003] Especially in the detergent industry, enzymes are often in granular form with the aim of achieving one or more desired storage and / or performance properties, depending on the specific application at hand. In this regard, the industry has provided numerous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N11/14C11D3/14C11D3/386C11D17/06C12N9/00C12N11/00
CPCC11D3/38672C12N11/00C11D3/14C11D17/06
Inventor R·I·小克里斯坦森
Owner GENENCOR INT INC
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