Hi bro!
Cho hỏi mục đích của bro là làm gì, sản xuất chơi, sản xuất buôn bán, tìm hiểu chơi, tìm hiểu vì công việc??????
Nếu múc đích hok phải sản xuất lớn, bro kiếm cai gọi la patent trên google, rồi nghiên cứu nhé
mình kiếm thử 1 cái cho bro đây
http://www.patentstorm.us/patents/60...scription.html
paste cho mọi người nghiên cứu luôn
BACKGROUND OF THE INVENTION
The present invention relates to a candle which releases a constant
fragrance over a long period of time. The present invention also relates
to a manufacturing method for the same.
Various additives are used in candles to provide desirable qualities, such
as color, scent, texture, and stability. For example, U.S. Pat. No.
4,449,987 (the entirety of which is herein incorporated by reference)
describes candles containing the insect repellent methyl heptenone,
coumarin, and indole to add both fragrance and insect repellence. U.S.
Pat. No. 4,005,978 (the entirety of which is herein incorporated by
reference) describes a means to reduce distortion at the time of molding
by adding 0.5-1.5% by weight of anhydrous phthalic acid to the candle
manufacturing material.
A candle, which is molded using a candle manufacturing material mixed with
a dried pulverized mixture of starch breakdown products containing
cyclodextrin or cyclodextran and a perfume, is stabilized in terms of heat
by clathrating the perfume. It is disclosed that the dispersion quality,
compatibility, and storage quality of the fragrance are dramatically
improved at the time of mixing into the candle (refer to Japanese
laid-open patent publication number 56-11995). Candles made from flammable
materials and flammable wicks, and candles which give soft lighting and
which consist mainly of higher fatty acids, metal salts of resin acids,
sugars or alcohols, where colorants and perfumes are added as necessary
are known. Polyoxypropylene-monoalkyl-ether with a high degree of
polymerization (n=40-60) is disclosed as a preservative for a perfume
composition (see Japanese Laid-open Publication Number 6-74435).
In candles of the prior art, there remain many combinations of fragrances
and candle manufacturing materials that are unacceptable. In some
combinations, chemical and physical interactions between the fragrance
materials and candle manufacturing materials give rise to candles which
show a variety of poor performance qualities. Examples of poor performance
includes, but is not limited to, poor odor quality, poor odor intensity,
poor odor diffusion, slow burn rate, excess soot generation and poor
fragrance stability during storage.
OBJECTS AND SUMMARY OF THE INVENTION
The object of the present invention is to provide a candle and a method for
manufacturing a candle which overcome the problems of the prior art.
A further object of the present invention is to provide a candle with
excellent perfume dispersion and stability.
A further object of the present invention i to provide a method to
manufacture candles with excellent perfume dispersion and stability.
According to the present invention, a scented candle includes a candle
manufacturing material, a fragrance provider, and at least one of
polypropylene glycol and polypropylene glycol monoalkyl ether with a
general formula (I)
H--(OC3 H6)n --O--R (I)
where n is an integer between 2 and 40 and R is a hydrogen or an alkyl
group with a carbon number between 1 and 10.
The above, and other objects, features and advantages of the present
invention will become apparent from the following description.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In order to overcome the problems of the conventional technology previously
described above, a scented candle according to the present invention
provides a candle manufacturing material which contains a fragrance
provider and at least one of polypropylene glycol and polypropylene glycol
monoalkyl ether, which is expressed by general formula (I):
H--(OC3 H6)n --O--R (I)
where n is an integer from 2 to 40, and R indicates a hydrogen or an alkyl
group having a carbon number from 1 to 10.
The present inventors have also discovered a manufacturing method for a
scented candle wherein a fragrance provider and at least one of
polypropylene glycol and polypropylene glycol monoalkyl ether with general
formula (I) (as above) are added to and mixed with the pre-melted candle
manufacturing material prior to pouring into molds for the formation of
the finished candle.
The polypropylene glycol monoalkyl ether compound of the present invention
is a type of polypropylene glycol derivative where there is a ring-opening
polymerization of an aliphatic alcohol by a propylene oxide and an ether
bond is formed. The average degree of polymerization is between about 2
and about 40 moles. Although polypropylene glycol monoalkyl ethers are
conventionally available, the degree of polymerization required in
production of candles is crucial.
The degree of polymerization is critical to obtain proper solubility in the
production material of the candle at the time of heating, the proper
hardness when molded, and the appropriate degree of flatness of the burn
surface when the candle is burning. Furthermore, the degree of
polymerization is important in helping the added perfume to dissolve and
mix within the candle manufacturing material.
In the present invention, the degree of polymerization is such that n is
from 2 to 40. If the degree of polymerization surpasses this, the
viscosity becomes large, and material becomes difficult to handle. There
is also a stickiness in the feel at the time of use. If the degree of
polymerization is below this, there are problems in terms of the
maintenance of the fragrance and the flammability. The R of the aliphatic
alcohol is from 1 to 10.
When R is a butyl group, n is preferably between about 2 to 33 (Mn being
from 200 to 2000). A more preferred range for n is from 4 and 16 (Mn being
between about 300 and 1000).
When the carbon number of group R exceeds 10, the viscosity increases.
Then, a hardness develops, the miscibility with the perfume material and
the candle manufacturing material is decreased. This is not preferred.
A methyl group, ethyl group, propyl group, n-butyl group, n-pentyl group,
n-hexyl group, n-heptyl group, n-octyl group, n-nonyl or n-decyl group can
be used, and in particular the n-butyl group is preferred. The amount to
be used is between about 0.1 to about 10% by weight of the candle
manufacturing material, and preferably is between about 0.5 to about 8% by
weight.
Furthermore, a variety of additives such as stearic acid, colorants and
repellents can be added to the candle manufacturing material. Adding these
additives still obtains a good quality candle.
There are no particular limitations for the perfume to be used in the
present invention. However, because the main material of the candle of the
prior art is paraffin, a perfume product with a strong polarity is
difficult to use due to problems with solubility. If at least one of
polypropylene glycol and polypropylene monoalkyl ether of the present
invention is added to the paraffin material, a variety of perfume items
can be used. The scent of the perfume can be chosen according to the
location or atmosphere where it is to be used, and rose and citrus and the
like are preferred.
There are no particular limitations to the candle manufacturing material.
Materials which can be used include, but are not limited to, paraffin,
bee's wax, synthetic wax, sugars, fatty acids such as stearic acid and the
like, polyamide resins, aliphatic amides, aliphatic alcohols, divalent
alcohols, polyvalent alcohols, emulsifiers, oils such as palm or soy bean
oil or the like. Combinations of additional commonly used additives can
also be used. The candle manufacturing material needs to have a melting
point of 70 to 80° C.
The present invention is characterized by the discovery of a substance
which can be added to the candle manufacturing material and which improves
its function. The manufacturing means for the candle is achieved by
conventional methods.
........... còn tiếp trong cái link đó
Mấy bro nên làm quen với cách tiếp cận vấn đề như vậy nhé, đừng cứ chỉ thảo luận dựa trên kinh nghiệm, có 1 cái gì đó có thể đào sâu được sẽ tốt hơn
Chúc vui!