EP0717593A1 - Repellant material - Google Patents

Repellant material

Info

Publication number
EP0717593A1
EP0717593A1 EP94925586A EP94925586A EP0717593A1 EP 0717593 A1 EP0717593 A1 EP 0717593A1 EP 94925586 A EP94925586 A EP 94925586A EP 94925586 A EP94925586 A EP 94925586A EP 0717593 A1 EP0717593 A1 EP 0717593A1
Authority
EP
European Patent Office
Prior art keywords
composition
skin
repellant
gel
forming agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94925586A
Other languages
German (de)
French (fr)
Inventor
Anthony Pisacane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0717593A1 publication Critical patent/EP0717593A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/733—Alginic acid; Salts thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37—Esters of carboxylic acids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/02—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings containing insect repellants

Definitions

  • the present invention relates to a repellant material, and in particular to a material having insect repelling properties.
  • compositions which repel insects and can be applied to the skin normally contain diethyltoluamide (deet), dimethylphthalate, di-N-propylisocinchomerate, N-octyl bicycloheptene dicarboxamide or mixtures of these compounds as the active ingredient having the desired insect repelling properties.
  • deet diethyltoluamide
  • dimethylphthalate di-N-propylisocinchomerate
  • N-octyl bicycloheptene dicarboxamide or mixtures of these compounds as the active ingredient having the desired insect repelling properties.
  • insect repellents containing vegetable extracts are safer to use but are less effective in repelling insects and have only a low protection time. Moreover, this type of insect repellant tends to be oily or greasy.
  • a repellant material composition comprising an insect repellant and a gel forming agent.
  • the composition is suitable for application to the skin and has a particularly long-lasting effect.
  • the composition according to the invention is capable of drying to form a microfilm layer on the skin, the layer being at least partially water-resistant and a residue with the ability to repel insects remains on the skin after washing.
  • the microfilm layer forms a physical barrier, preventing insect bites.
  • the repellent material comprises a pyrethrin (for example pyrethrum) which is effective in repelling insects.
  • a piperonyl alkoxide is included in the composition and acts synergistically with the pyrethrin to promote the insect-repelling properties of the composition.
  • the alkoxide has up to 10 carbon atoms, for example 2 to 8 carbon atoms.
  • the gel-forming agent may be any suitable agent capable of forming a gel. Generally the gel formed should not liquify when heated to a temperature lower than 40°C.
  • suitable gel-forming agents include polymeric compounds such as cellulose, cellulose derivates, alginate and the like.
  • the preferred gel-forming agent is alginate.
  • the composition may further include collagen or glycerine as a component. Addition of 0.01 to 10% by weight of collagen or glycerine promotes adherence of the dried layer of gel composition on the skin. Generally, 0.5 to 2% by weight of glycerine will produce satisfactory results.
  • binders eg. resins
  • viscosifiers e.g. resins
  • buffers osmotic regulators
  • surfactants emulsifiers
  • dispersants dyes, pigments or colorants
  • perfumes or essential oils and the like.
  • sesame oil orange oil, rosemary oil, black pepper oil and the like which may be included in the composition to produce a pleasant smelling gel.
  • Certain essential oils are also useful to prevent stinging, which is especially useful where the skin has already been bitten by insects .
  • the composition may further include sunscreening components.
  • sunscreening components are well-known to those skilled in the art, but particular reference is made to titanium dioxide for inclusion in the present composition to impart sunscreening properties thereto.
  • the present composition may be made to impart a recognised degree of protection from sunburn as required, for example the composition may be made to Factor 10 or 20.
  • composition according to the present invention may be applied to the skin and forms a non-toxic layer of active substance which has the ability to repel insects, such as flying insects for example mosquitos, gnats and midges.
  • the layer of composition on the skin is dry, non-greasy and has a protection time of approximately 6 hours.
  • composition In addition to being repellent to insects the composition is insecticidal on contact.
  • the present invention also provides a method of producing the composition described above, said method comprising admixing an insect repellant and a gel-forming agent.
  • the present invention provides a method of repelling insects from a surface, said method comprising applying a composition as described above to said surface.
  • the present invention provides the use of a composition as described above to repel insects.
  • the ingredients are blended together into a non-greasy gel which can be applied to the skin to repel insects.
  • titanium dioxide may be added to either composition to provide the required degree of protection from the sun.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Birds (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Emergency Medicine (AREA)
  • Agronomy & Crop Science (AREA)
  • Dermatology (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Cosmetics (AREA)

Abstract

There is provided a repellant material composition comprising an insect repellant and a gel forming agent, wherein said insect repellant is pyrethrum. The composition is suitable for application to the skin and has a particularly long-lasting effect. The composition according to the invention is further capable of drying to form a microfilm layer on the skin, the layer being at least partially water-resistant, and a residue with the ability to repel insects remains on the skin after washing.

Description

"Repellant Material"
The present invention relates to a repellant material, and in particular to a material having insect repelling properties.
Known compositions which repel insects and can be applied to the skin normally contain diethyltoluamide (deet), dimethylphthalate, di-N-propylisocinchomerate, N-octyl bicycloheptene dicarboxamide or mixtures of these compounds as the active ingredient having the desired insect repelling properties. However, although such compounds are effective in repelling insects they have the disadvantage that they can cause irritation to the skin and skin rashes. In extreme cases more severe illness, possibly leading to death, can result.
Other insect repellents containing vegetable extracts are safer to use but are less effective in repelling insects and have only a low protection time. Moreover, this type of insect repellant tends to be oily or greasy.
In addition many of the conventional insect repelling compositions are completely washed away upon exposure to water or aqueous solutions.
According to the present invention there is provided a repellant material composition comprising an insect repellant and a gel forming agent. The composition is suitable for application to the skin and has a particularly long-lasting effect. The composition according to the invention is capable of drying to form a microfilm layer on the skin, the layer being at least partially water-resistant and a residue with the ability to repel insects remains on the skin after washing. In addition, the microfilm layer forms a physical barrier, preventing insect bites.
By mixing certain compounds, properties can be produced which affect certain organisms and these properties are not known to be associated with the individual components of the mixture.
Preferably the repellent material comprises a pyrethrin (for example pyrethrum) which is effective in repelling insects. In a preferred embodiment, a piperonyl alkoxide is included in the composition and acts synergistically with the pyrethrin to promote the insect-repelling properties of the composition. Preferably the alkoxide has up to 10 carbon atoms, for example 2 to 8 carbon atoms.
The gel-forming agent may be any suitable agent capable of forming a gel. Generally the gel formed should not liquify when heated to a temperature lower than 40°C. suitable gel-forming agents include polymeric compounds such as cellulose, cellulose derivates, alginate and the like. The preferred gel-forming agent is alginate. Optionally the composition may further include collagen or glycerine as a component. Addition of 0.01 to 10% by weight of collagen or glycerine promotes adherence of the dried layer of gel composition on the skin. Generally, 0.5 to 2% by weight of glycerine will produce satisfactory results.
Additionally further ingredients may be included. For example, binders (eg. resins), viscosifiers, buffers, osmotic regulators, surfactants, emulsifiers, dispersants, dyes, pigments or colorants, perfumes or essential oils, and the like. Mention may be made of sesame oil, orange oil, rosemary oil, black pepper oil and the like which may be included in the composition to produce a pleasant smelling gel. Certain essential oils (such as, for example, rosemary oil and black pepper oil) are also useful to prevent stinging, which is especially useful where the skin has already been bitten by insects .
In one embodiment the composition may further include sunscreening components. Suitable sunscreening components are well-known to those skilled in the art, but particular reference is made to titanium dioxide for inclusion in the present composition to impart sunscreening properties thereto. The present composition may be made to impart a recognised degree of protection from sunburn as required, for example the composition may be made to Factor 10 or 20.
The composition according to the present invention may be applied to the skin and forms a non-toxic layer of active substance which has the ability to repel insects, such as flying insects for example mosquitos, gnats and midges. The layer of composition on the skin is dry, non-greasy and has a protection time of approximately 6 hours.
In addition to being repellent to insects the composition is insecticidal on contact.
In another aspect, the present invention also provides a method of producing the composition described above, said method comprising admixing an insect repellant and a gel-forming agent.
In a further aspect, the present invention provides a method of repelling insects from a surface, said method comprising applying a composition as described above to said surface.
In a yet further aspect, the present invention provides the use of a composition as described above to repel insects.
The following Examples further illustrate the invention in a non-limiting manner.
% by weight
6.5
0.47
3.74
0.47 88.82
100.00
The ingredients are blended together into a non-greasy gel which can be applied to the skin to repel insects. titanium dioxide may be added to either composition to provide the required degree of protection from the sun.

Claims

1. A repellant material composition comprising an insect repellant and a gel forming agent, wherein said insect repellant is pyrethrin.
2. A composition as claimed in Claim 1, wherein said gel-forming agent is alginate.
3. A composition as claimed in either of Claims 1 and 2 further comprising a piperonyl alkoxide.
4. A composition as claimed in Claim 3 wherein said piperonyl alkoxide is piperonyl butoxide.
5. A composition as claimed in any of Claims 1 to 4 further comprising glycerine.
6. A composition as claimed in any of Claims 1 to 5 further comprising a sunscreening component.
7. A composition as claimed in Claim 6 wherein titanium dioxide is present as said sunscreening component.
8. A repellant material composition substantially as hereinbefore described.
9. A method of producing a composition as claimed in any of Claims 1 to 8, said method comprising admixing pyrethrum and a gel-forming agent.
10. A method of producing a repellant material composition as claimed in any of Claims 1 to 8 substantially as hereinbefore described.
11. A method of repelling insects from a surface, said method comprising applying a composition as claimed in any of Claims 1 to 8 to said surface.
12. The use of a composition as claimed in any one of Claims 1 to 8 to repel insects.
EP94925586A 1993-09-11 1994-09-08 Repellant material Withdrawn EP0717593A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939318869A GB9318869D0 (en) 1993-09-11 1993-09-11 Repellant material
GB9318869 1993-09-11
PCT/GB1994/001961 WO1995007024A1 (en) 1993-09-11 1994-09-08 Repellant material

Publications (1)

Publication Number Publication Date
EP0717593A1 true EP0717593A1 (en) 1996-06-26

Family

ID=10741871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94925586A Withdrawn EP0717593A1 (en) 1993-09-11 1994-09-08 Repellant material

Country Status (6)

Country Link
EP (1) EP0717593A1 (en)
AU (1) AU7544794A (en)
CA (1) CA2171452A1 (en)
GB (1) GB9318869D0 (en)
WO (1) WO1995007024A1 (en)
ZA (1) ZA946931B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19722196C1 (en) * 1997-05-27 1998-10-22 Karl Engelhard Fabrik Pharm Pr Di:ethyl-meta-toluamide based insect repellent composition
US20030194454A1 (en) 1998-07-28 2003-10-16 Bessette Steven M. Pesticidal compositions containing rosemary oil and wintergreen oil
KR20000066615A (en) * 1999-04-19 2000-11-15 박창진 Non-toxic insecticidal cosmetic composition
ES2153777B1 (en) * 1999-04-26 2001-11-16 Tudela Bernardo Hernandez NEW FLYING INSECTS AHUYENTADOR PRODUCT.
DE10320505A1 (en) 2003-05-08 2004-11-25 Bayer Healthcare Ag Means for controlling parasites on animals

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393048A (en) * 1980-02-15 1983-07-12 The United States Of America As Represented By The Secretary Of The Army Protective gel composition for wounds
DE3021725A1 (en) * 1980-06-10 1981-12-17 Bayer Ag, 5090 Leverkusen AGENT FOR CONTROLLING ANIMAL EECTOPARASITES WITH A STRONG RESIDUAL EFFECT
JPS5742613A (en) * 1980-08-29 1982-03-10 Lion Corp External embrocating agent
GB8612826D0 (en) * 1986-05-27 1986-07-02 Boots Co Plc Insecticidal compositions
FR2599220A1 (en) * 1986-05-29 1987-12-04 Aerosols Ste Mediterraneenne New parasiticidal composition having prolonged effect for prevention or external treatment in man and warm-blooded animals
AU610906B2 (en) * 1987-07-31 1991-05-30 Sumitomo Chemical Company, Limited Method for preventing harm from bloodsucking insects
CH676412A5 (en) * 1988-01-27 1991-01-31 Serge Andre Leuthold

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9507024A1 *

Also Published As

Publication number Publication date
GB9318869D0 (en) 1993-10-27
AU7544794A (en) 1995-03-27
CA2171452A1 (en) 1995-03-16
ZA946931B (en) 1995-05-25
WO1995007024A1 (en) 1995-03-16

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Legal Events

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