JPS6039644B2 - Base material for cosmetics or ointments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides cosmetics or ointments that do not deteriorate in quality over a long period of time and have a good feel when used, and that also have excellent emulsifying properties. Regarding the base material for use.

Betrolatum is a waxy substance that is commonly used as a base material for ointments.

Betrolatum is chemically inert and is a semi-solid oily substance with moderate adhesive strength, so it can be used in pomades,
Widely used as a base material for various cosmetics such as hair creams, hair conditioners, and foundations, and as a base material for various types of ointments such as hydrophilic petrolatum, hydrophilic soft tubes, white ointments, boric acid ointments, and zinc oxide ointments. It is used.
However, this type of Betrolatum can not only be produced only through complicated refining processes such as washing with sulfuric acid, washing with sodium hydroxide, and acid clay treatment after dewaxing the residual oil from vacuum distillation of puffin crude oil with a solvent. If the energy is insufficient, there is a risk that heavy metals, cyclic compounds, crab-like substances, etc. that have an adverse effect on the foot of the skin may remain.

Betrolatam also has the disadvantage that its emulsifying properties are not necessarily sufficient and its adhesive strength is relatively strong, so it does not spread well on the skin, and as a result, it does not provide a good feeling of use. However, cosmetics and ointments containing betrolactam also have the disadvantage that, if left unused for a long period of time, they emit a peculiar odor due to the betarolactam. Due to these circumstances, improvements in cosmetics and soft cost base materials are needed.
Although strongly desired in the industry, improvements to date have not been successful. The present invention provides a new base material for cosmetics or ointments to replace betarolatum, and the base material is an olefin having 20 to 40 carbon atoms or an olefin mixture having an average carbon number of 20 to 40. It consists of a polymer having a molecular weight of 600 to 4,000 and a melting point of 25 to 8,000 obtained by polymerizing.

As is clear from the above, wax-like substances used as base materials for cosmetics and ointments meet the chemical requirements of being chemically stable, non-irritating to the skin, and easy to emulsify. Of course, it must satisfy the following, but in addition, it must also satisfy the three physical requirements of the above-mentioned base material: melting point, adhesive strength, and ductility.

The olefin polymer according to the present invention is specified by three factors: the number of carbon atoms in the raw olefin, the molecular weight of the polymer, and the melting point.

Incidentally, if an olefin or olefin mixture whose carbon number is outside the above range is used as the raw material olefin, even if the molecular weight is 600 to 4000 and the melting point is 2.
Even if a polymer with a molecular weight of 5 to 8,000 is obtained, that polymer cannot satisfy the three physical conditions mentioned above at the same time. Similarly, even if an olefin or olemine mixture having a carbon number within the above range is used as the raw material olefin, if the molecular weight of the resulting polymer exceeds 4,000 and the melting point exceeds 8,000, the polymer Due to its strong adhesive strength and lack of ductility, it is not possible to provide cosmetics or ointments with a good feeling of use; conversely, its molecular weight is less than 60 degrees,
Polymers with a melting point of less than 2,500 are liquid at room temperature and cannot be used as cosmetics or cartilage base materials that solidify at room temperature, such as betrolatum. In the present invention, when used alone as the raw material olefin, an olefin having 20 to 40 carbon atoms is used. The olefin may be either a Q-olefin or an internal olefin, and may have a side chain. Examples of suitable olefins include eicosene-1 and heneicosene-1.
1, dococene-1, bentacocene-1, octacocene-1, triacontene-1, hentriacontene-1, dotriacontene-1, bentatriacontene-1, octatriacontene-1, tetracontene-1 and their alkyl derivatives, For example, methyltriacontene-1 can be mentioned. When using the raw material olefin as a mixture, the average carbon number of the olefin mixture is 20 to 20.
Must be in the range of 40.

The individual olefins constituting the mixture, when used alone, may be Q-olefins or internal olefins, or may be olefins having a temporal head. The olefin mixture has 6 to 5 carbon atoms in its constituent olefins.
0, preferably a mixture of olefins whose main component has 20 to 40 carbon atoms is suitable. Any of the following polymerization methods can be adopted: cationic polymerization using a Lewis acid as a catalyst, radical polymerization using a peroxide or heat, and coordination anionic polymerization using a Ziegler catalyst. Cationic polymerization using aluminum halides is most preferred.

After the polymerization reaction is completed, the catalyst is removed from the reaction product, and if necessary, unreacted olefins or low molecular weight polymers are removed by distillation to reduce the molecular weight to 600 to 400.
0, an olefin polymer with a melting point of 25 to 8000 can be obtained.

Generally, the olefin polymer produced by the above method has one double bond, but there is no particular problem when it is used as it is as a base material for cosmetics or ointments. but,
If oxidative stability is particularly required, residual double bonds can be hydrogenated by hydrogenation methods using conventional hydrogenation catalysts. The "melting point" used herein refers to the melting point measured according to the Betrolatum melting point test method (JISK 2523), and the sample is attached to the tips of two thermometers and placed in a test tube. , the temperature at which the sample melts and falls when heated in a flaw chamber (average value of two thermometers)
means.

Olefin polymers with a molecular weight of 600 to 4000 and a melting point of 25 to 80°C, produced using olefins having 20 to 40 carbon atoms or olefin mixtures having an average carbon number of 20 to 40 as starting materials, are chemically stable for a long period of time. Moreover,
It is suitable as a base material for cosmetics and ointments as it has no irritating properties. Furthermore, the polymer is
Since it is moderately oily compared to Betrolatum, it does not give a greasy feeling to cosmetics or ointments. In addition, the olefin polymer of the present invention not only has good miscibility with animal and vegetable oils, longest-chain alcohols, long-chain fatty acids, etc., but also has excellent emulsifying properties, and the emulsion can be kept in a stable emulsified state for a long period of time. It has the feature of being able to hold Therefore, it can be said that the present invention provides a base material for cosmetics or ointments that surpasses Betrolatum. Next, the structure and effects of the present invention will be explained in more detail by showing production examples of olefin polymers according to the present invention and examples of the present invention.

Polymer Production Example 400 tons of the raw material olefin shown in Table 1 was put into a glass reactor, and after mixing 4 tons of aluminum chloride as a catalyst, polymerization was carried out at 10,000℃ for 3 hours.

After the reaction was completed, the catalyst was decomposed and removed with an aqueous ammonia solution, and the molecular weight, melting point, and acid value of the obtained polymer were measured, and the appearance of the polymer was also observed. In addition, the stability of the polymer was evaluated. After the polymer was left in a constant temperature air bath at 800 °C for 30 days, the acid value of the polymer was measured and the presence or absence of odor was investigated. The results are shown in Table 2. For comparison, the acid value is 0.
When Betrolatam* with a grade of 0.01 or less was left in a constant temperature air bath of 80oo for 30 days, the acid value of Betrolatam was 0.1.
The situation worsened, and a foul odor was observed.

Table 1 Table 2 Example 1 Production No. Using the olefin polymer obtained in 1, a hair cream having the following composition was prepared in a conventional manner.

Polymer 15. Skin t% liquid paraffin (bushy) 37. Skin t% beeswax 2.5wt% water-soluble lanolin 3. Skin t% sorbitan sequiolate 1.8wt% glycerin monostearate 2.2wt% polyoxyethylene sorbitan monooleate
3.5Wt% white sand
0.5wt% flavoring water
Balance This hair cream had a less greasy feeling than the hair cream using Betrolatum, and had a good feeling of use.

Furthermore, when this hair cream was left at a temperature of 4500℃ for 30 days and its emulsified state was observed, water separation was observed in the hair cream using vetrolatum, but the above hair cream had no water content. No separation was observed. Example 2 Production No. Using the olefin polymer obtained in step 2, a pomade having the following composition was prepared in a conventional manner.

Polymer 52.0wt%olive oil
30.0wt% solid paraffin
6.0wt% fragrance 3.
0 Wt% Dye Appropriate amount This pomade had a particularly good feel when used compared to a pomade using vetrolatam.

Example 3 Production No. The polymer obtained in step 3 was hydrogenated in the presence of a Raney nickel catalyst, and a foundation having the following composition was prepared using this hydrogenated polymer in a conventional manner.

The melting point of the hydrogenated polymer was 370, the same as before hydrogenation.
Hydrogenated polymer 15.0Wt
% liquid paraffin 29.5wt
% solid paraffin 10. Book/
t% Sorbitan Sesquiolate 3.0
Wt% Almond oil 7.
and wt% powder coloring agent 35.
Skin t% Fragrance 0
．． 5wt% This foundation had a better feel when used compared to the foundation using vetrolatam.

Example 4 Production No. Using the polymer obtained in step 4, a pharmaceutical water-absorbing ointment base having the following composition was prepared in a conventional manner.

Polymer 40. Sail [% stearyl alcohol 18.0W・t
% Sarashi Mitsuro 2. skin'
t% polyoxyethylene oleyl ether 5.0W
t% purified water 35. skin t%
This water-absorbing ointment base material did not have as sticky a feeling as the one using betrolatum, and had a good feeling of use. Example 5 Production No. Using the polymer obtained in step 5, a tick having the following composition was prepared in a conventional manner.

Polymer 60. Skin t% beeswax 18. Book t% Solid paraffin 20. Skin t% Fragrance 2. Skin t% This tick had a better feel when used compared to the tick using vetrolatum.

Further, when this tick was left at a temperature of 45 qo for 3 days and observed, an off-odor was observed in the tick using vetrolatam, but no off-odor was observed in the above-mentioned tick.
Example 6 Production No. The olefin polymer obtained in step 6 was hydrogenated using 1% nickel diatomaceous material, and a cold cream having the following composition was prepared using this hydrogenated polymer in a conventional manner.

Polymer 17. skin t% dense wax
10. book t% lanolin
3. Enemy't% liquid paraffin 30. Vt% sorbitan sesquiolate 3.8wt% polyoxyethylene sorbitan monooleate
0.2yt% purified water
30.5wt95 fragrance
0.5wt% glycerin
5. This cold cream is the best.

It had a better feel when used compared to cold cream using latam. Also this cold cream 4
When I left it at 5℃ for 30 days and performed a mirror test, it turned out fine. A strange odor was observed in the cold cream using latam, but no odor was observed in the cold cream described above. Example 7 Production No. 7. Add nickel diatom to the polymer obtained in step 7.
Using this hydrogenated polymer, a cleansing cream having the following composition was prepared by a conventional method.

Polymer 26.0Wt
% liquid paraffin 25. Skin t% stearic acid monoglyceride 3. Skin t% polyoxyethylene sorbitan monooleate
3. and Wt% cetyl alcohol
2.0wt% purified water
35. skin t% fragrance
1. Book t%ku11 lycerin
5.0 wt% This cleansing cream had a better feel on stool compared to the cleansing cream using Petrotum.

Example 8 Production No. The polymer obtained in step 8 was hydrogenated using 3w% of nickel diatomaceous earth, and a hair cream having the following composition was prepared using the obtained hydrogenated polymer by a conventional method.

Polymer 12.0Wt%
Liquid paraffin (light) 40. Book t% Sarashi beeswax 2.5wt% water-soluble lanolin 3. Volume t% sorbitan sesquiolate 1.6wt% glycerin monostearate 2.2wt% polyoxy-ethylene sorbitan monooleate
3.6Wt% borax
0.5wt% flavoring water
Balance This hair cream had a better feel than the hair cream using petrolatum.

Example 9 No. Using the polymer obtained in step 9, an anti-white bran cream having the following composition was prepared.

Beeswax 12.0
Wt% polymer 36. skin t
% liquid paraffin 25. skin t%
Sorbitan sesquiolate 4.0wt%
Para-aminobenzoic acid 2. Skin t% purified water 20. Skin T,% Fragrance 1. Skin t% This sunscreen cream using petrolatum had a particularly good feel when used compared to the sunscreen cream using petrolatum.

Comparative example 1 No. Example 1 using the polymer obtained in 10
An attempt was made to prepare a hair cream using the hair cream formulation shown in 1. However, due to the high melting point of the polymer, the characteristics of a hair cream could not be obtained.

．． Comparative example
2 No. An attempt was made to prepare hair cream using the polymer obtained in step 11 according to the formulation of hair cream shown in Example 1, but due to the low melting point of the polymer, it was not possible to obtain the properties of hair cream. ) ivy.

Claims (1)

[Claims] 1 Cosmetics or ointments made of a polymer with a molecular weight of 600 to 4000 and a melting point of 25 to 80°C obtained by polymerizing an olefin having 20 to 40 carbon atoms or an olefin mixture having an average carbon number of 20 to 40. base material.