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EP0260896A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Emanator for volatile liquids

Assignee: COLMAN PRODUCTS Ltd
•
Filing: 1987-09-11
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Granted: —
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Expires: 2007-09-11
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Abstract

Abstract A device for dispensing a volatile liquid as a vapour includes a porous support of natural or synthetic woven or non-woven fibre, porous glasses, porous plastics (optionally in film form), parchment, leather or rubber provided with an organopolysiloxane material which serves to close the pores of the support to the passage of liquid but permits the passage of vapour from the liquid. The volatile liquid is a perfume, insecticide, insect repellant, insect attractant, higher animal repellant, corrosion inhibitor, a germicidal agent or a medicament. A space treatment vapour emanating device is thus provided the external surface of which device is dry to the touch.

Inventors

  • 👤 Rodney Thomas Fox
  • 👤 Philip William Goreham

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 19:22
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12; A61L9/042; A44; A44C; A44C15/00; A44C15/002

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 56 words
A device for dispensing a volatile liquid as a vapour characterised in that it includes a porous support provided with at least one substantially elastomeric crosslinked organopolysiloxane material of viscosity up to 1,000,000mm² sec⁻¹ at 25°C which serves to close the pores of the support to passage of liquid and to permit the passage of vapour.
Claim 2
Independent Claim 56 words
A device for dispensing a volatile liquid as a vapour characterised in that it includes a porous support provided with at least one substantially elastomeric crosslinked organopolysiloxane material of viscosity up to 1,000,000mm² sec⁻¹ at 25°C which serves to close the pores of the support to passage of liquid and to permit the passage of vapour.
Claim 3
Dependent Claim 19 words
A device as claimed in Claim 1 characterised in that the organopolysiloxane material forms a film over the support.
Claim 4
Dependent Claim 14 words
A device as claimed in Claim 2 characterised in that the film is continuous.
Claim 5
Independent Claim 41 words
A device as claimed in any preceding claim characterised in that the organopolysiloxane material is applied to the porous support from solution, from aqueous emulsion or is formed in situ at a rate commensurate with 50gm⁻² based on dried coating weight.
Claim 6
Independent Claim 26 words
A device as claimed in any preceding claim characterised in that the organopolysiloxane material has a solubility parameter in the range 8 to 27mPa ½ .
Claim 7
Independent Claim 41 words
A device as claimed in any preceding claim characterised in that the porous support is sintered polyethylene, sintered polyurethane or an open pored polymer produced by leaching solubles from a moulded or cast body containing such, or a porous plastics film.
Claim 8
Independent Claim 28 words
A device as claimed in any preceding claim characterised in that the support provided with the organopolysiloxane is sealed with a removable, vapour impermeable barrier for storage purposes.
Claim 9
Independent Claim 27 words
A device as claimed in any preceding claim characterised in that the solubility parameter of the volatile liquid lies in the range 10 to 25mPa ½ .
Claim 10
Independent Claim 31 words
A device as claimed in any preceding claim characterised in that the swellability (as defined herein) of the organopolysiloxane material in the volatile liquid is at least 25% within 1 week.

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