Patent US4087368A successfully refreshed from Google Patents.
US4087368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble enzyme granules
Assignee: Colgate Palmolive Co
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Filing: 1975-07-01
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Granted: 1978-05-02
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Expires: 1995-07-01
Abstract
Abstract Water-soluble enzyme granules are prepared containing 5-95% by weight of a magnesium alkyl sulfate, 5-20% by weight of water and a proteolytic enzyme. The granules are produced by extrusion, and are in the form of cylindrical rods or spheres which have good flow properties, resistance to caking, segregation and dusting, and which are suitable for addition to particulate washing products.
Inventors
- 👤 Giuseppe Borrello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:00
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38672
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
Water-soluble enzyme granules characterized by good flow properties, resistance to caking, segregation and dusting, and which have improved enzyme stability consisting essentially of 5-95% by weight of a magnesium alkyl sulfate having an average chain length of between 10 to 16 carbon atoms or an ethoxylate thereof containing from about 5 to 50 moles of ethylene oxide, 5 to 20% by weight of water, and a proteolytic enzyme in an amount sufficient to provide about 0.1 to 4 Anson units per gram of granules, said granules being produced by extrusion and being in the form of cylindrical rods having a diameter of about 0.4 mm. to 0.8 mm. and a length of about 2 mm. to 10 mm. or in the form of spheres having a diameter of about 0.5 mm. to 1 mm., which form is suitable for addition to particulate washing products having a diameter of about 0.2 mm. to 2 mm.
Claim 2
Dependent Claim
154 words
Water-soluble enzyme granules characterized by good flow properties, resistance to caking, segregation and dusting, and which have improved enzyme stability consisting essentially of 5-95% by weight of a magnesium alkyl sulfate having an average chain length of between 10 to 16 carbon atoms or an ethoxylate thereof containing from about 5 to 50 moles of ethylene oxide, 5 to 20% by weight of water, and a proteolytic enzyme in an amount sufficient to provide about 0.1 to 4 Anson units per gram of granules, said granules being produced by extrusion and being in the form of cylindrical rods having a diameter of about 0.4 mm. to 0.8 mm. and a length of about 2 mm. to 10 mm. or in the form of spheres having a diameter of about 0.5 mm. to 1 mm., which form is suitable for addition to particulate washing products having a diameter of about 0.2 mm. to 2 mm.
Claim 3
Dependent Claim
12 words
Granules as in claim 1 in which said blend contains sodium sulfate.
Claim 4
Dependent Claim
22 words
Granules as in claim 1 which are compact and whose individual granule density is about 1.2 to 1.6 grams per cubic centimeter.
Claim 5
Dependent Claim
26 words
In a fabric-cleaning mixture of a peroxy compound and a proteolytic enzyme, the improvement in which said enzyme is present in the granules of claim 1.
Claim 6
Dependent Claim
25 words
Product as in claim 4 in which said fabric-cleaning mixture is a built heavy duty detergent composition containing water-soluble organic detergent and alkaline builder salt.
Claim 7
Dependent Claim
12 words
Product as in claim 1 in which said organic detergent is anionic.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |