EP0382464A2
Expired / Lapsed
EP
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Coating Process
Assignee: Unilever PLC
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Filing: 1990-02-06
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Granted: —
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Expires: 2010-02-06
Abstract
Abstract A coating process can serve to encapsulate either solid particles or liquid droplets or both. The process comprises a first step of forming a melt of a coating material in which the solid particles or liquid droplets as a dispersed phase. This melt is then destabilised by adding solid particles and/or by cooling. This causes the melt to crumble to a particulate product consisting of dispersed phase encapsulated with the coating material. Examples of coating material are organic polymers, soap fatty acid mixtures and non-soap surfactants. Materials which can be encapsulated include bleaching agents and perfume.
Inventors
- 👤 Galip Akay
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 12:39
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0039
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
79 words
A process for coating or encapsulating solid particles and/or liquid droplets, the process comprising a first step of forming a melt of a coating material with the said particles and/or droplets as a disperse phase therein, and a second step of destabilizing the melt by addition of solid particles and/or by cooling, causing the melt to crumble to a particulate product whereof the particles comprise the coating material with the particles and/or droplets of the disperse phase embedded therein.
Claim 2
Dependent Claim
79 words
A process for coating or encapsulating solid particles and/or liquid droplets, the process comprising a first step of forming a melt of a coating material with the said particles and/or droplets as a disperse phase therein, and a second step of destabilizing the melt by addition of solid particles and/or by cooling, causing the melt to crumble to a particulate product whereof the particles comprise the coating material with the particles and/or droplets of the disperse phase embedded therein.
Claim 3
Dependent Claim
27 words
A process according to claim 1 wherein the coating material is an organic polymeric material, wax, soap, non-soap surfactant, fatty acid or a mixture of such materials.
Claim 4
Dependent Claim
14 words
A process according to claim 2 wherein the coating material is water-soluble or water-swellable.
Claim 5
Dependent Claim
12 words
A process according to claim 2 wherein the coating material is water-insoluble.
Claim 6
Dependent Claim
21 words
A process according to any one of claims 1 to 4 wherein solid particles encapsulated by the process are themselves water-soluble.
Claim 7
Dependent Claim
22 words
A process according to any one of claims 1 to 5 wherein solid particles encapsulated by the process are a bleaching compound.
Claim 8
Dependent Claim
22 words
A process according to any one of claims 1 to 5 wherein solid particles encapsulated by the process are a bleach activator.
Claim 9
Dependent Claim
24 words
A process according to any one of claims 1 to 5 wherein liquid droplets encapsulated by the process are antifoam agent and/or fabric softener.
Claim 10
Dependent Claim
20 words
A process according to any one of the preceding claims wherein both liquid droplets and solid particles are encapsulated together.
Claim 11
Dependent Claim
26 words
A process according to any are of claims 1 to 5 wherein solid particles encapsulated by the process are porous and have a liquid absorbed therein.
Claim 12
Dependent Claim
12 words
A process according to claim 10 wherein the liquid is a perfume.
Claim 13
Dependent Claim
12 words
A process according to claim 10 wherein the liquid is an antifoam.
Claim 14
Dependent Claim
22 words
A process according to any one of the preceding claims wherein the particulate product particles are further coated with an outer coating.
Claim 15
Dependent Claim
29 words
A process according to claim 13 wherein the further coating is carried out by repeating the steps of claim 1 with the said product particles as the disperse phase.
Claim 16
Dependent Claim
19 words
A process according to claim 13 or claim 14 wherein the particles which receive an outer coating are water-swellable.
References Cited (Backward Citations)
No citation records indexed.
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