EP0040091A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Suds suppressing granules for use in detergent compositions
Assignee: Unilever PLC
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Filing: 1981-05-11
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Granted: —
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Expires: 2001-05-11
Abstract
Abstract Silicone-containing microgranules are formed by a coating process using a substantially spherical or cylindrical core material such as a sucrose bead, oran enzyme-containing prill or marume. In a preferred process the core is impregnated with an absorbent such as titanium dioxide, the absorbent is impregnated with a mixture of silicone oil and hydrophobic silica and the coated granule is then coated with wax. The granules are used in detergent compositions.
Inventors
- 👤 Louis Ho Tan Tai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 18:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/373; C11D17/00; C11D17/0039; C11D3/0005; C11D3/0026; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
32 words
Suds-suppressing granules suitable for use in detergent compositions comprising a substantially spherical or cylindrical core material and one or more coatings, at least one coating comprising a silicone oil material as hereindefined.
Claim 2
Dependent Claim
32 words
Suds-suppressing granules suitable for use in detergent compositions comprising a substantially spherical or cylindrical core material and one or more coatings, at least one coating comprising a silicone oil material as hereindefined.
Claim 3
Dependent Claim
11 words
Granules according to claim 1, wherein the core material comprises sucrose.
Claim 4
Dependent Claim
20 words
Granules according to either of the preceding claims, wherein the core material comprises a prill or marume containing an enzyme.
Claim 5
Dependent Claim
23 words
Granules according to any one of the preceding claims, wherein one of the coatings comprises an absorbent impregnated with the silicone oil mixture.
Claim 6
Dependent Claim
15 words
Granules according to any one of the preceding claims, wherein the absorbent comprises titanium dioxide.
Claim 7
Dependent Claim
15 words
Granules according to any one of the preceding claims comprising an outer coating of wax.
Claim 8
Dependent Claim
21 words
Granules according to claim 5, wherein the wax is a paraffin wax having a melting point of from 35 to 65°C.
Claim 9
Dependent Claim
27 words
Granules according to any one of the preceding claims, wherein the core material is substantially spherical and has an average diameter of from 0.1 to 3 millimetres.
Claim 10
Dependent Claim
27 words
Granules according to any one of the preceding claims 2 and 4 to 7, wherein the core material is formed from molten sucrose by a spray-cooling process.
Claim 11
Dependent Claim
18 words
A detergent composition comprising a detergent active compound and granules according to any one of the preceding claims.
Claim 12
Dependent Claim
20 words
A detergent composition according to claim 10, comprising the granules in an amount of from 0.3 to 5% by weight.
Claim 13
Dependent Claim
53 words
A process for the manufacture of granules'in accordance with any one of claims 1 to 8 which comprises the steps of (i) granulating substantially spherical core material with a particulate absorbent to form a coating of the absorbent on the surface of the cores; and (ii) impregnating the absorbent with a silicone oil.
Claim 14
Dependent Claim
19 words
A process in accordance with claim 12, wherein the granulation step is carried out in an inclined pan granulator.
Claim 15
Dependent Claim
28 words
A process in accordance with claim 12 or 13, wherein the silicone oil is dissolved in an organic solvent and the resulting solution is sprayed onto the absorbent.
Claim 16
Dependent Claim
39 words
A process according to claim 12 for the manufacture of granules in accordance with claim 6, wherein as a final step a solution of. wax in an organic solvent. is sprayed onto silicone-impregnated cores, and the solvent is evaporated.
References Cited (Backward Citations)
GB1492939A
Cited
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