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(19) Kenya Induatrial Property Inalitote. (n)    KE 00177
(+S) Dale or publedion: 3021/2004
(12) PATENT
(51) 1PC (7): ADM

an Application Number: (12) Rag Date:
(73) Oweer(s): (72111roommie)    KE/P/2002100365
03/092002 
Paul Mwaura Muesli of P.0 Box 55083. 00200 city Square Nairobi
Mungai, Paul Mwauat    
       
(54)
Candles infused with neem oil or pyrethnaids as insect repellent
(57) Abstract
The invention relates to an insect repelling candle containing 1-5% neem oil or 1-2% pyrethroids infused with refined petroleum wax with =lour waxol orange AB and lavender 29256 as a fragrance.
MA Documents
US 5895600;00 6503285; US 6286249
 
CANDLES INFUSED WITH NEEN OIL AND PYRETHROIDS
FRAGRANCE AND COLOUR AS
INSECT REPELLANT
Backaround of the Invention
Many Insects appearing on the domestic scene especially households have an economic Importance. These Impacts include food contamination with pathogenic agents especially the musts domestics causing a range of ailments Ike dysentery and other diarreal diseases and eye Infections. This is exacerbated by unsound environmentsl disposal practices for effluent and solid domestic waste leading to food as well as bodily contamination by Insects.
The mosquito as a vector of malaria is a more serious pest since t will invade houses and spread disease. The cockroach finds refuge in tiny crevices of drawers and is a serious food contaroinator.The housefly is both a menace and a nuisance.
This Invention is intended to provide an intervention In a habituated house no as to repel insects because of the benign nature of the active ingredients. The neem seed oil contains the followho chemicals:
Llmonolds
.    Triterpenoids
6-alpha-o-acetyl-7-deacetylnimocinol
•    Nimocinol
These two Ilmonolds have Insecticidal properties
•    Azadirachtin
 
Also with insecticidal properties
Natural pyrethrolds will also be used for the second type of insect repellent candles.
Summary Of The Invention
Thom hoc boon parallel 'Audios with 1% neem oil in paraffin oil carded out n India (Indian Journal Malarial 1996 Sep:33 (3): 139-43) which indicated that after dinical examination of 156 adults and 110 children there was no indication of any major adverse effects after one year of exposure to 1% seem oil in kerosene lamps. Other studies reveal that application of 1-4% seem all to the skin has been effective as a mosquito iepelent while wood balls soaked in 5% seem all has provided protection against the mosquito.
This invention consists of en infusion of 1-5% neem oil or1-2% pyrethroids into refined petroleum wax with adjuncts; namely a colour rvaxol orange AB and a fragrance Lavender 29256. The product is formed Into candles with standard candle wicks.
The burning of these candles releases the repellents into the room and provides relief from the insects.
=MEM
Was    97%
Neern oil with limnoids    1% or 1-2% pyrethroids
Naxol orange AB    1%
 
Lavender 29256    1%
Wtk    outside the parameters
The following chemicals present In the neem oil are responsible for the insecticidal properties of the oil.
6 alplha-o-acetyl-7- diacetylnimocinot    a limonoid
nimocinol    a limonold
azadirachtin    triterpinoid
Studies in India have shown that these chemicals can be Isolated from the oil by passing it through a filter bed of graphitised activated charcoal followed by solvent extraction with methanol. They are present in trace quantities which can be merited through a liquid chromatographic process using traditional materials. (Journal: Chromatography A 2000 Jul21).
The oil was used whole and he burning of candles released the active ingredients Into the air. It was estaill4ted that after burning the candles for a period of 4 hours, the room was rendered mosquito free for a period of 72 louts when it became necessary to repeat the burning of the repellent candle.
The journal phytochemistry 2000 Feb; 53 (3): 371-6 cites studies where two new terpinoids extracted from new leaves were carried out and an LC50 of 21 and 133 pprn for !Dun insuar larvae or mosquitoes, a clear indication or the Insecliddal properties of the neem oil.
Pyrethroids on the other hand have a long history of use as insecticide in spray form for domestic use.
3
 
Details of the Invention
Apparatus:    A 20 litre mild steel container with a steam jacket.
_Material    Quantity
Semi refined wax    19.4 It.
Waxol orange AB    colour    200 g
Lavender 29256    fragrance    200 ml
Neem seed oil    repellent    200 ml or pyrethroid
The percentage will be 1% to 5% seem oil or 1-2% pyrethroids.
The wax was melted alter heating for a period of 30 minutes and the other ingredients added with continuous stirring for a period of 20 minutes. The resultant product was poured Into a jar of 2 It. and returned Into mixture trial It was homogenised. The resultant was then poured into candle formers provided with candlewicks.
POMMWOniamall
This percentage is currently at 1% - 5% to provide candles for special places with severe insect incidence.
The neem seed oil contains the followhg chemicals:
LimorioldS
•    Trterpenolds
6-alpha-o-acety1-7-deacetylrimcdnol
•    Nimocinol
if
 
These two limonoids have insecticidal properties
• Azadlrachtin
Also with insecticidal properties
The pyrethroids are a traditional spray insecticide.
There has been parallel studies with 1% neem oil in paraffin oil carried cut in India (Indian Journal Malarial 1996 Sep:33 (3): 139-43) which indicated that after clinical examination of 156 adults and 110 children there was no indication of any major adverse effects after one year of exposure to 11% neem oil in kerosene lamps. Other studies reveal that application of 1-4% neem oil to the skin has been effective as a mosquito repellent while wood balls soaked in 5% neem oil has provided protection against he mosquito.
This invention consists of an infusion of 1.5% neem oil Into refined petroleum wax with adjuncts; namely a colour waxol orange AB and a fragrance Lavender 29256. The product is formed into candles with standard candle wicks. The burning of these candles releases the repellents or the insectldde Into the room and provides relief from the mosquito and other Insects.
The other constituents of the neem oil are:
Oleic acid    56%
Stearic acid    14.6%
PalMitiC add    152%
Unoletc acid    9.0%
Various lower fatty adds    3.4%

(Journal: Biochem. Sac Trans 2000 Dec.,213(6): 880-2)
 
rams
1.    A candle containing 1%-5% neem oil or 1-2% pyrethroids for repelling or killing insects comprising
I) a petroleum wax
ii) an effective percentage of seem oil or pyrethroid capable of repeling or killing insects on burning the candle in a room.
2.    A candle composition as in claim 1 where the insecticides repellents are selected from Ilmonoids; trfterpenolds, nlmocInol, aoadlrachtln present In neem off andpyrethroids.
3.    A petroleum wax candle containing 95% to 99 petroleum and from 1 to 5% neem oil, or 1-2% pyrethrolds.
4.    A process of repelling or killing Insects In a room by burning petroleum wax candles containing 1-5% neem oil, or 1-2% pyrethroids.
5.    Any form of wax ether in mold , or in a container that contains the said ingredients as described in claim one(1)
 
agEtal
A gaseous fumigant is provided on burning candles containing 1%-5% neem oi, releasing limonoids, triterpenolds, nimodnols, pyrethroids, with the burring by- products of the wax. This acts to repel Insects Ina room or kil the heeds.

 

 

 

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