JPH0782598A - Improved freezer personal cleansing solid having improved mildness and containing specified fatty acid soap for good bubbles - Google Patents

Abstract

PURPOSE: To obtain the subject solid excellent in mildness and lathering properties by adding a predetermined amt. of a specific full fatty acid soap and a predetermined amt. of water.

CONSTITUTION: Full fatty acid soap is constituted of about 65-85 wt.% of saturated fatty acid soap selected from a group consisting of myristic acid soap, palmitic acid soap, stearic acid soap and a mixture of them and about 15-35 wt.% of soap selected from a group consisting of oleic acid (A), lauric acid (B), minor (8C, 10C, 18.2C) fatty acid soap (C) and a mixture of them and about 30-70 wt.% of this full fatty acid soap and about 15-30 wt.% of water are added to constitute the objective solid. The sum total amt. of A, B and C in the solid is set to about 8-25 wt.% and the amt. of A is set to 0- about 25 wt.% and that of B is set to 0- about 10 wt.% and that of C is set to 0- about 5 wt.%. Further, a ratio of (A+B)/C is set to about 1/1- about 1/0. Full fatty acid soap is composed of a mixture of Na soap and K soap and this mixture amt. is set to about 90-100% by wt. of the total soap and a ratio of Na/K soap is set to about 95/5 - about 60/40.

COPYRIGHT: (C)1995,JPO

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to freezer personal cleansing bar soaps.

[0002]

This invention is made from soap using a "freezer" solids process of the general type disclosed in U.S. Pat. No. 3,835,058. Personal cleansing bar soap. These solids are referred to as "freezer solids" and said U.S. Pat. No. 3,835,058 teaches the freezer bar soap method.

Japanese Patent No. J5 7030-798 describes
Disclosed is a transparent solid "framed" or "molded" soap in which the fatty acids that make up the soap component are myristic acid, palmitic acid, stearic acid. At least 90% by weight of the fatty acids constituting the soap component are myristic acid, palmitic acid,
And clear soap, which is stearic acid, is described. The product is reported as a clear solid soap with good foaming and coagulation properties, good storage stability and low irritant effect on human skin. Jap. J5 7030-
The method and transparent composition illustrated in 798 are distinct from opaque freezer solids. The freezer solids method is also distinguished from the transparent frame kneading solids method.

[0004]

SUMMARY OF THE INVENTION The present invention provides a predetermined saturation C.
_An improved freezer bar soap comprising a _{14- C18} fatty acid soap and a foaming soap selected from lauric acid soaps, oleic acid soaps and other minor predetermined more soluble soaps. The solids of the present invention have improved mildness while maintaining acceptable lathering / foaming properties. Freezer bar soaps can be made using the methods generally disclosed in the aforementioned US Pat. No. 3,835,058.

An object of the present invention is to provide a good and good foaming freezer bar soap. Another object is to provide a freezer bar soap that is milder than the current standard good foaming freezer bar soaps identified below by way of example as comparative bar.

Yet another object of the present invention is to provide good foaming freezer solids without damaging the mildness.

Yet another object is to provide a freezer solid composition that is processable.

Other objects of the invention will be apparent in light of the following disclosure.

The present invention relates to selected saturated C _{14 to} C ₁₈ fatty acid soaps, lauric acid soaps, oleic acid soaps and C ₈ , C
₁₀ and C _{18: 2} foaming soaps selected from soaps and improved freezer bar soaps. The solids of the present invention have improved mildness while maintaining acceptable lather properties. Freezer bar soaps are described in US Pat.
It can be prepared using the methods generally disclosed in 835,058. Such solids are highly desirable from a skin mildness and processability standpoint while maintaining other acceptable solids qualities including good lathering properties and / or good smearing properties.

The present invention broadly relates to (I) saturated fatty acids selected from the group consisting of myristic acid soaps, palmitic acid soaps, stearic acid soaps and mixtures thereof in an amount of from about 50 to about 85% by weight of total fatty acid soaps. soap, (II) oleic acid soap and lauric acid soaps and essentially C _8, C _10,
Minor fatty acid soap selected from the group consisting of C _{18: 2} and soap selected from the group consisting of a mixture thereof about 15%
To about 50% (where solids above a predetermined oleic acid soap, lauric acid soap, and minor (C _8, C _10, C
_{18: 2} ) about 8% to about 25% soap; said oleic acid soap is 0 to about 25% by weight of solids; and said laurate soap is 0 to about 10% by weight of said solids. And
And the minor _{(C 8, C 10, C} 18: 2) soap content is from 0 to about 5 wt% of said solids; and wherein the predetermined lauric / oleic acid soap to said minor soap is from about 1: 1
To about 1: 0; and the amount of Na / K soap mixture is about 90 to about 100% by weight of the total soap; and the Na / K soap is about 19: 1 (95/5). To about 1.5: 1 (60/40); and the freezer soap solids comprise about 30 to about 70% by weight of the solids total fatty acid soap) and (III) the solids. About 15 ~
Defined as a mild, lathering, personal cleansing freezer soap bar characterized by containing about 30% by weight water.

In view of the above definitions, the preferred mild foaming personal cleansing freezer soap bar is:
(I) the saturated fatty acid soap selected from the group consisting of myristic acid soap, palmitic acid soap, stearic acid soap and mixtures thereof is present in an amount of about 65 to about 80% by weight of the total fatty acid soap; oleic acid soap and lauric acid soaps and minor _{(C 8, C 10, C} 18: 2)
Fatty acid soap is present in an amount of about 20% to about 35% and the solids are the predetermined oleic acid soaps, laurate soaps,
And minor _{(C 8, C 10, C} 18: 2) and contained about 8% to about 25% soap; from about 5 of the oleic acid soap weight solids
~ About 20 wt%; and from about 5 to about 10 wt% of the lauric acid soaps is the solid; and the minor _{(C 8, C 10, C} 18: 2) the amount soap of the solids About 1 to about 3% by weight; and about 1: 1 to about 1: 1 of the given lauric / oleic acid soap and the minor soap.
Has a ratio of 0; and the amount of Na / K soap mixture is from about 95 to about 100% by weight of the total soap;
/ K soap has a ratio of about 90/10 to about 65/35; and the total soap is selected from the group consisting of Mg soap and TEA soap in an amount of 0 to about 5% by weight of the total soap. Including soap; and said freezer soap solids by weight of said solids (A) said total fatty acid soap from about 35 to about 60%; (B) non-reducing sugar 0% to about 30%; (C) hydrophobic / Lipophilic soap additive material 0% to about 35%;
And (D) comprising about 20% to about 25% of said water.

Another preferred bar of the present invention is the said predetermined saturated fatty acid soap amount is about 65 to about 80% by weight of said total soap; and said predetermined minor soap amount and lauric acid soap amount. And about 10 to about 20% by weight of said solids of oleic acid soap; and said lauric acid / oleic acid soap has a ratio of about 2: 1 to about 1: 4; and said Na / K ratio is 90/10 to 65/35;
And the lauric acid / oleic acid soap and the minor _{(C 8, C 10, C} 18: 2) soap about 6: 1 to about 4: 1
It has a ratio of.

Yet another preferred freezer solid of the present invention is wherein said predetermined saturated fatty acid soap amount is from about 70 to about 75% by weight of said total soap; and said laurate and oleic acid soaps. The total amount of the solid matter is about 12 to
About 18% by weight and the lauric acid / oleic acid ratio is about 1.5: 1 to about 1: 3 and the Na /
It has a K ratio of 85/5 to 70/30.

Yet another preferred freezer solid is the predetermined saturated fatty acid soap (myristic acid soap, stearic acid soap and palmitic acid soap) from about 20 to about 50% by weight of the solid; and About 5% reducing sugar
To about 20%; and said hydrophobic / lipophilic substance is about 2
% To about 25%; and the water is about 20% of the solids.
To about 25% by weight; and the solids comprise from about 10 to about 20% by weight of the solids of the predetermined lauric acid / oleic acid soap.

Preferred solids of the present invention are those wherein the freezer soap solids comprise from about 30% to about 55% of the total fatty acid soap by weight of the solids; and the oleic acid soap is predominantly cis. .

Particularly preferred solids of the present invention are from about 30 to about 55% total fatty acid soap by weight of said solids; from about 5% to about 20% of said non-reducing sugars; about 5% of said hydrophobic / lipophilic substances.
% To about 20%; and about 20% to about 25% of said water; and the amount of lauric acid soap and oleic acid soap is about 12 to about 18% by weight of said solids; said oleic acid soap cis. / Trans isomer ratio of about 1: 0 to about 20:
It consists of what is 1.

When the solid contains Na / K95 / 5 soap, it should contain some sucrose and / or TEA soap to ensure good foam.
Some preferred solids are those of substantial amounts disclosed in US patent application Ser. No. 07 / 617,827 filed Nov. 26, 1990 “Molded Solids Made of Hard Enmeshing Mesh of Neutralized Carboxylic Acids”. It can have a soap structure. Such solids may have less smear formed when left in wet soap dishes. Such a solid is a structure which is a continuous or semi-continuous relatively hard interlocking open three-dimensional crystalline mesh of a neutralized carboxylic acid, ie a given fatty acid soap as defined herein, in particular saturated fatty acid sodium soap. Consists of.

That is, these solids comprise a substantial amount (eg, at least about 5 to about 75% by volume) of a continuous or semi-continuous rigid interlocking mesh of neutralized fatty carboxylic acid, preferably saturated fatty acid sodium soap. contains. Solids containing the actual mass of the mesh structure tend to be stiff, improving smear. Solids with the mesh structure are typically not translucent. Other advantages of this kind of mesh structure and guidance for obtaining said mesh structure are given in said US patent application Ser.
/ 617,827. When using the freezer method rather than the framed method, additional soap is needed to achieve sufficient viscosity to still form the same level of structure after forming the soft plug as it exits the freezer. Sometimes. Agitation, which tends to destroy the structure, is minimized during the formation of the mesh structure. Higher levels of one or more individual saturated chain lengths tend to better form the mesh structure.

Amounts, parts, percentages and ratios herein are by weight unless otherwise indicated. Note that the amount of soap expressed here may be due to the weight percent (wt%) of the total soap, and sometimes to the wt% of solids. All numerical limits, ranges, temperatures, ratios, etc., are approximations unless otherwise indicated.

Within the scope of the present invention are several different preferred embodiments.

All parts, amounts, percentages and ratios are by weight unless otherwise stated. Note that the amount of soap is expressed herein as wt% of total soap and as wt% of solids. Numerical limits, ranges, temperatures, ratios, etc. are approximations unless otherwise noted.

The term "insoluble" soap as used herein means a soap that is less soluble than sodium myristate (C ₁₄ ).

Soaps Suitable fatty acid soap components (A) for use in the compositions and methods of the present invention include higher fatty acid alkali metal ion soaps, as defined above, especially sodium ion and potassium ion soaps and Mention may be made of mixtures thereof. A mixture of sodium and potassium soaps
Needed for foam. Other cations with similar properties, such as triethanolammonium (TE
A), lithium and magnesium cations can be used in at least small amounts. Such other cations, when used, are used in an amount of 0 to 10% by weight of total soap, preferably about 2 to about 5%. Table 1 soap solubility, _{molar, 25 ℃ Na K Mg C 12} 0.11 free insoluble C _18: 1 0.49 Free N / A C ₁₄ 0.004 free insoluble C ₁₆ insoluble N / A-insoluble C ₁₈ insoluble N / A. Insoluble As used herein, the term "insoluble" soap means a soap that is less soluble than sodium myristate.

The term "coconut" as used herein with respect to soaps or fatty acid mixtures is C ₈ 8%, C ₁₀ 7%,
C ₁₂ 48%, C ₁₄ 17%, C ₁₆ 9%, C ₁₈ 2%, C _{18: 1}
By a substance with an approximate carbon chain length distribution of 7% oleic acid and 2% linoleic acid (the first 6 fatty acids are saturated).

The term "palm oil stearin" as used herein refers to approximately C ₁₄ 1%, C ₁₆ 58%, C ₁₈ 5%, oleic acid 29% and linoleic acid 7% (the first three fatty acids being saturated). Means a substance having a carbon chain length distribution close to.

The term "tallow" as used herein is C
_By a mixture of soaps with an approximate chain length distribution of ₁₄ 2.5%, C ₁₆ 29%, C ₁₈ 23%, palmitoleic acid 2%, oleic acid 41.5% and linoleic acid 3%.

The term "triple press stearic acid" as used herein means a fatty acid having an approximate chain length distribution of palmitic acid C ₁₆ 55%, stearic acid C ₁₈ 45%.

As used herein, the term "relatively more soluble soap" means a soap whose fatty chain length or amount of unsaturation is more soluble than sodium myristate, or sodium laurate or potassium laurate excluding potassium soap. It means a soap having a solubility similar to that of sodium oleate soap.

Fatty acid soaps can be prepared using pure chain fatty acids or by using suitable amounts and proportions of common fatty acid mixtures such as coconut, palm oil stearin, tallow, triple press stearic acid.

The preferred amounts and ratios can vary depending on the amount of cation mixture.

The amount of potassium soap should preferably not exceed about 1/3 or 4/10 of the amount of total soap and the amount of TEA or magnesium soap should exceed about 1/10 of the amount of total soap. It should not be, and is preferably less than about 1/20 of the total soap amount. For example, sodium soap is preferably at least about 60% of the total soap present in the bar. Na / K ratio range is 95/5 to 6
It is 0/40, preferably about 80/20 to 70/30. Table 2 total fatty soaps entire range preferred more preferred FA chain _{C 12 + 18: 1 15~50%} 20~35% 25~30% FA chain _C 14~18 50~85% 65~80% 70~75%, preferably , FA soap C ₁₂ / C _{18: 1} ratio is from about 2: 1 to about 1: 4, more preferably from about 1.5: 1 to about 1: 3.
Is.

Table 3 shows some preferred amounts of FA used in the compositions of this invention. Some preferred compositions contain little or no short chain FAs of 10 carbons or less. "Soap" and "fatty acids (FA)" used here
The term "salt" is often interchangeable. "Soap"
Are commonly used because they are of a common significance and are easier to have. The term soap as used herein can mean a single fatty acid soap or a mixture of fatty acid soaps. Examples of "minor than water-soluble soaps" is from 0 to about 5 wt% solids, preferably C ₈ present in an amount of from about 1 to about 3 _{wt%, C 10, C 18:} 2 is like . Such minor soaps promote foam. Table 3 C ₁₂ in total solids, unsaturated and / or minor chain soaps% wider preferred more preferred C ₁₂ + C _{18: 1} + minor 8-25% 10-20% 12-18% better foam, more often This is accomplished by using C _{18: 1} cis and potassium cation soap and optionally sugar in the amounts and ranges specified herein. C _{18: 1} cis
It is somewhat surprising that the use of vsC _{18: 1} trans, KvsNa soaps and sugars, all of which increase soap solubility, do not compromise mildness.

In order to achieve good foam and mildness, the amount of more water-soluble laurate and oleic acid soaps and minor more water-soluble soaps is 8 to 2% of solids.
It is important to selectively balance to 5% by weight. More bubbles are achieved at the top of the volume (25%) and better mildness is achieved at the bottom of the volume (8%).

On the other hand, the C _{18: 1} cis isomer (which is more soluble than the C _{18: 1} trans isomer) is preferred and surprisingly just as mild as the trans C _{18: 1} isomer because of the foam. Is. In solids containing oleic acid soap, the foam of such solids increases as the C _{18: 1} cis isomer increases. Conversely, foam is reduced at higher trans and depleted when the trans oleic acid isomer is present in substantial amounts by total soap weight or in amounts of about 5-8% by weight of solids or higher. The ratio of oleic acid cis / trans isomers is 1: 0 to 1: 1, preferably 1: 0 to 3: 1, more preferably 1: 0 to 19: 1. The preferred C _{18: 1} isomer amounts are shown in Table 4. Table 4 wt% broad range of C _{18: 1} isomers of oleic acid. Preferred more preferred C _{18: 1} trans 0-50% 0-25% 0-5% C _{18: 1} cis 50-100% 75-100% 95-100. The amount of water in the % water solids is about 15% to about 30%, preferably about 15% to about 25%, more preferably about 20% to about 25%.
Can be%. Large amounts of water within these preferred ranges are preferred for mildness and cost savings. An excess of water can be used in the solids preparation process of the present invention, but when using sucrose, the excess of water avoids burning (decomposing) sucrose in the 300 ° F (149 ° C) drying step. In order to do so, it should be removed before adding sucrose. In the preferred aerated freezer solids method, the amount of water used does not require a drying step.

It should be noted that large amounts of water or solvent can be used in the framed solids method. The reason is that the solids do not need to stand (hold their shape) during extrusion as in the freezer solids process.

Non-Reducing Sugars Non-reducing sugars such as sucrose are optional but preferred. Non-reducing sugars (when used) replace the soap used in amounts of about 5% to about 30% and at least comparable amounts. The net effect of less soap in this case is a corresponding mild benefit as well as unexpected processing and foam benefits.

Sucrose will not reduce Fehling's solution and is therefore classified as a "non-reducing" disaccharide.
Sucrose, commonly known as white sugar, is by far the most abundant carbohydrate found in the sap of land plants. that is,
It is one of the few non-reducing sugars available in very crystalline form in very pure form at the highest purity. It has been produced from sugar cane juice since 2000 BC and from sugar beet since the beginning of the 1800s. Sucrose can be added at 160 ~ depending on the crystallization solvent.
It is a sweet crystalline (monoclinic) solid that melts at 186 ° C.

Unless otherwise specified, the term "sucrose" as used herein refers to sucrose, its derivatives, and similar non-reducing sugars and those which are substantially stable at soap processing temperatures up to about 210 ° F (99 ° C). A similar polyol,
Examples include trialose, raffinose and stachyose; and sorbitol, lactitol and maltitol.

In contrast, starch, a complex sugar, is a reducing sugar and browns or "burns" at typical soap processing pHs and / or temperatures. It is important that the preferred formulations of the present invention have a stable, pumpable soap mixture that turns pure white upon aeration to give a floating white soap solid. Starch increases the viscosity of the soap mixture.

Sucrose has an unexpectedly dramatic thickening effect on the soap mixture, which eliminates the need to add excess water or solvent for intimate mixing. Sucrose reduces the viscosity profile of soap mixtures entering the freezer by comparable shear rates by about 20% to about 99%. Preferably, the amount of sucrose used to replace the comparable amount of soap is at least 50%, more preferably at least 75%, the viscosity of the otherwise comparable dried soap solids mixture. Will decrease.

When the soap / sucrose mixture is homogeneous, the soap / sucrose mixture is then cooled in the freezer to a temperature of at least about 49 ° C to about 66 ° C. Once again, the soap / sucrose mixture still has a viscosity that is pumpable and does not require costly equipment or excess water or excess solvent. The use of excess water / solvent requires an additional step for drying. Preferably, no moisture reduction (drying) step is required. The soap / sucrose mixture is preferably formulated so that it can be mixed and pumped without excess water. The mixing temperature is typically about 82 ° C to about 100 ° C. The sucrose / soap composition clutcher mixture, upon cooling,
Freezer Method Used to make hard stamped solids that stand on belts.

Alternatively, sucrose can be added to the dry soap mixture and still reduce viscosity and provide a mildness benefit to the final bar. A "dry soap mixture" is a mixture in which the amount of water has been reduced from about 30% to about 20-25%.

Hydrophobic / lipophilic (hydrophobic) materials Preferred solids of the present invention are hydrophobic / lipophilic (hydrophobic)
Soap bar additive material, preferably (1) wax, (2)
Free fatty acids, mono-, di- and triglycerides, and other hydrophobic materials including fatty alcohols having from about 8 to about 18 carbon atoms in each acyl or alkyl group,
And (3) a hydrophobic / lipophilic substance selected from the group consisting of a mixture thereof 0% to about 35%, preferably about 2%
It may contain about 25%, more preferably about 5% to about 20% (the maximum of the wax is about 25% and the maximum of the other hydrophobic substances is about 10% by weight of solids).

The hydrophobic material optional ingredients for use in the present invention are selected from waxes; mono-, di- and triglycerides; fatty acids; fatty alcohols; other similar materials; and mixtures thereof. Preferably, the solids contain at least 3% wax and about 2% wax to other hydrophobic material.
5: 1 to about 1: 3, more preferably about 1: 1 to about 1
It has a ratio of 0: 1. Although the use of hydrophobic components is highly preferred, the soap solids of the present invention can be prepared with little or no hydrophobic material as shown below in Example 7. Preferred breathable bar soap compositions include (1) about 30 wt% to about 70 wt% of the given fatty acid soap as described above, (2)
It contains 10% to about 30% non-reducing sugar, (3) 3 wt% to about 30 wt% hydrophobic material as described above, and (4) about 15% to about 30% water.

The hydrophobic material may be present in the preferred solids of the present invention in an amount up to about 30%, but preferably from about 5%.
Used in an amount of about 20%. The amount of some hydrophobic substances, such as fatty acids, can be increased in the bar soap composition as the amount of sucrose is increased. The greater the amount of sucrose present, the more such hydrophobic material can be present. Soap solids with and without sucrose can benefit from hydrophobic materials, especially waxes. Triglycerides (C ₈ -C ₁₈ alkyl chain) can be used up to about 10% without adverse effect on foaming performance. The preferred illustrative solids of the present invention are industry standard aerated freezer bar soap Ivory (IVORY
Good foamability equal to ^R ).

A preferred hydrophobic material has a melting point (mp) of about 12
A wax having a temperature between 0 ° F and about 185 ° F (49-85 ° C), preferably between about 125 ° F and about 175 ° F (52-79 ° C). Another preferred hydrophobic substance is petrolatum.

The waxes include petroleum-based waxes (paraffin, microcrystalline and petrolatum), plant-based waxes (carnauba, palm wax, candelilla, sugarcane wax, and plant-derived triglycerides), animal waxes (beeswax, Whale wax, wood wax, shellac wax, and animal derived triglycerides),
Mineral wax (Montan, ozokerite, and ceresin)
And synthetic waxes (Fischer-Tropsch).

The preferred paraffin wax has a melting point of about 120.
It is a fully refined petroleum wax having a temperature of from 0 ° F to about 160 ° F. This wax is colorless and tasteless and meets FDA requirements for use as a coating for food and food packaging. Such paraffins are readily commercially available. Very suitable paraffins can be obtained, for example, from The Standard Oil Company, Ohio under the trade name Factowax R-133.

Other suitable waxes are those having melting points of 131 ° F and 13 respectively by the National Wax Company.
It is sold under the trade names 9182, 6971 and 6975 with 0 ° F (about 55 ° C) and 155 ° F (about 68 ° C).

The paraffin is preferably about 5 in solid form.
Is present in an amount of about 20% by weight. The paraffin component is used in the product to impart skin mildness, plasticity, firmness, and processability. It also gives the solid a glossy look and smoothness.

The paraffin component is optionally supplemented by microcrystalline wax. Suitable microcrystalline waxes have a melting point of, for example, about 140 ° F (6
0 ° C) to about 185 ° F (85 ° C), preferably about 145 ° C.
Between about 175 ° F (79 ° C) and about 175 ° F (62 ° C). The wax should preferably meet the FDA requirements for food grade microcrystalline wax. A very suitable microcrystalline wax is commercially available from Witco Chemical Company under the trade name Multiwax X-14.
Obtained at 5A. The microcrystalline wax is preferably present in the solids in an amount of about 0.5 to about 5% by weight. The microcrystalline wax component imparts flexibility to the solid at room temperature.

Fatty acids are preferably used in the method of the invention. Those having 8 to 18 carbon atoms are preferable. Normal,
Mixtures of free fatty acids derived from natural sources are used.
Preferred mixtures of fatty acids are the saturated C ₁₄ -C ₁₈ fatty acid mixture.

Free fatty acids improve the amount and quality of the lathering properties of the solids produced according to the method of the present invention. The advantages of free fatty acids in providing foams with the desired stability and small bubbles to give a rich or creamy foam are known in the art. Fatty acids also provide an emollient effect that softens the skin or otherwise improves the feeling properties on the skin and tends to trap excess alkalinity.

The amount of free fatty acid incorporated into the preferred finished solids of this invention is from about 0.5% to about 8%. The preferred amount of fatty acid is about 2% to about 7%.

Free fatty acids can be incorporated into the solids of the present invention in a number of suitable ways. The free fatty acid component is desirably incorporated into the soap mixture before or at the same time as the high shear mixing step used to prepare the solid composition. The uniform distribution of free fatty acids throughout the finished solid composition is facilitated by high shear action. The free fatty acid component can be added after the high shear mixing step if other post-mixing means are used to distribute the free fatty acid substantially evenly throughout the soap mixture or resulting solid composition.

The free fatty acid component is preferably introduced into the soap mixture of the present invention by the addition of free fatty acid to the soap mixture during the initial clutching stage. Alternatively, the free fatty acid component can be introduced before or during the aeration step if flavors and other additives are incorporated into the soap mixture if desired. Further, the free fatty acid component can be introduced as a pre-prepared mixture of soap and free fatty acid, for example, an acid-reactive mixture of soap and free fatty acid prepared by insufficient neutralization in the soap manufacturing method.

The solids of the present invention can show mildness improvement without free fatty acids as a result of the presence of certain fatty acid soaps alone or in combination with sucrose and / or hydrophobic substances.

Synthetic Detergent Surfactant Another solid contains a synthetic detergent surfactant, preferably a mild, foaming synthetic detergent surfactant from 0% to about 30%, preferably from about 4% to about 15%. However, the solids of the present invention are preferably soap solids with little or no synthetic surfactant.

The optional synthetic detergent surfactant is typically selected from the group consisting of anionic synthetic detergents, nonionic synthetic detergents, amphoteric synthetic detergents and zwitterionic synthetic detergents. Low foaming and high foaming and high water soluble and low water soluble surfactants can be used in the solid compositions of the present invention. Synthetic detergent surfactants, which are known as good-foaming synthetic detergent surfactants and / or good dispersants for soap curds formed in hard water, are particularly desirable.

Examples of suitable synthetic detergents for use herein are US Pat. No. 3,351,558, column 6, column 7,
Line 0 to column 7, line 74.

As an example, a water-soluble salt of an organic sulfonic acid and a water-soluble salt of an aliphatic sulfuric acid ester, that is, a group consisting of an alkyl group having 10 to 22 carbon atoms, a sulfonic acid ester group and a sulfuric acid ester group in the molecular structure Water-soluble salts of organic sulfuric acid reaction products having a selected group are mentioned.

Synthetic sulfate detergents of special interest are usually solid alkali metal salts of sulfuric acid esters of normal primary aliphatic alcohols having 10 to 22 carbon atoms. Thus, sodium alkylsulfates obtained from mixed higher alcohols derived by reduction of tallow or by reduction of palm oil, palm oil, palm kernel oil, palm oil stearin, babassu kernel oil or other oils of coconut base. Salts and potassium salts can be used here.

Other aliphatic sulfates that may be used as appropriate include water-soluble salts of sulfates of polyhydric alcohols that are incompletely esterified with high molecular weight soap-forming carboxylic acids. Such synthetic detergents include water-soluble alkali metal salts of sulfuric acid esters of high molecular weight fatty acid monoglycerides, for example, sodium and potassium salts of coconut oil fatty acid monoesters of 1,2-hydroxypropane-3-sulfate, monomyristoyl. Mention may be made of sodium ethylene glycol sulfate and potassium monomyristoyl ethylene glycol sulfate, and sodium monolauroyl diglycerol sulfate and potassium monolauroyl diglycerol sulfate.

Synthetic surfactants and other optional materials useful in conventional cleaning products are also useful in the present invention. In fact, some ingredients, such as certain hygroscopic synthetic surfactants that are commonly used in liquids and that are very difficult to formulate in conventional cleansing solids, are very compatible with the solids of the present invention. . Thus, essentially all of the known synthetic surfactants useful in cleansing products are useful in the compositions of the present invention. The cleansing product patent literature is full of synthetic surfactant disclosures. Some preferred surfactants as well as other cleansing product ingredients are disclosed in the following references: Patent number Issued date Inventor 4,061,602 December 1977 Overstar et al. 4,234,464 November 1980 Molshauser 4,472,297 September 1984 Borich et al. 4,491,539 January 1985 Hoskins et al. 4,540,507 September 1985 Gloria 4,565,647 January 1986 Lenado 4,673,525 1987 June Small etc. 4,704,224 November 1987 Saud 4,788,006 November 1988 Boritch Junior, etc. 4,812,253 March 1989 Small etc. 4,820,447 April 1989 Medkarf etc. 4,906,459 March 1990 Cobb etc. 4,923,635 May 1990 Simion etc. 4,954,282 1990 Some preferred synthetic surfactants such as September Rice are shown here by way of example. Preferred synthetic surfactant systems are selectively designed for solids appearance, stability, foam, cleansing and mildness.

It will be appreciated that the surfactant mildness can be measured by the skin barrier destructive test used to evaluate the irritation potential of surfactants.
In this test, the milder the surfactant, the less the skin barrier is destroyed. Skin barrier destruction is defined as radiolabeled water ( ³ H- that passes from the test solution through the skin epidermis into the physiological buffer contained in the diffuser chamber.
H ₂ O). This test is based on T.W.
J. Franz by J. Invest. Dermatol., 197
5,64, pp 190-195; and U.S. Pat. No. 4,6.
73,525. These references disclose synthetic solids based on mild alkyl glyceryl ether sulfonate (AGS) surfactants containing "standard" alkyl glyceryl ether sulfonate mixtures and define the "mild surfactant" criteria. ing. Barrier destructive testing is used to select mild surfactants. Some preferred mild synthetic surfactants are described in the aforementioned US Pat. No. 4,673,525.
And No. 4,954,282. Some specific examples of preferred surfactants are used in the examples herein.

Some examples of good, mild, foam-enhancing synthetic detergent surfactants are, for example, sodium lauroyl sarcosinate, alkyl glyceryl ether sulfonates, sulfonated fatty acid esters, and sulfonated fatty acids.

Numerous examples of other surfactants are disclosed in the aforementioned patents. Examples thereof are other alkyl sulfates, anionic acyl sarcosinates, methyl acyl taurates, N-acyl glutamate, acyl isethionates, alkyl sulfosuccinates, alkyl phosphates, ethoxylated alkyl phosphates. , Tridecetosulfate, protein condensates, mixtures of ethoxylated alkylsulfates with alkylamine oxides, betaines, sultaines, and mixtures thereof. Surfactants include alkyl ether sulfates having 1 to 12 ethoxy groups, especially ammonium lauryl ether sulfate and sodium lauryl ether sulfate.

These other surfactant alkyl chains are:
C ₈ -C _22, preferably a C ₁₀ -C _18. Alkyl glycosides and methyl glucose esters are preferred mild nonionic surfactants that can be mixed with other mild anionic or amphoteric surfactants in the compositions of the present invention. Alkyl polyglycoside detergents are useful foam boosters. The alkyl group can vary from about 8 to about 22 and the glycoside units per molecule vary from about 1.1 to about 5 to provide the proper balance between the hydrophilic and hydrophobic portions of the molecule. it can. The average degree of glycosidation is about 1.1 to about 2.7, preferably about 1.2 to about 2.
5 C ₈ -C ₁₈ with, preferably a combination of C ₁₂ -C ₁₆ alkyl polyglycosides are preferred.

Preference is given to sulphonated esters of fatty acid esters in which the chain length of the carboxylic acid is C _{8 to} C ₂₂ , preferably C _{12 to} C ₁₈ . The chain length of the ester alcohol is from C ₁ to
It is C ₆ . These include sodium methyl α-sulfolaurate, sodium methyl α-sulfococoate,
And sodium methyl α-sulfotaloate.

Amine oxide detergents are good foam boosters. Some preferred amine oxides, C ₈ ~C _18, preferably C ₁₀ -C ₁₆ alkyl dimethyl amine oxides and C ₈ -C _18, preferably C ₁₂ -C ₁₆ fatty acyl amidopropyl dimethyl amine oxides and mixtures thereof is there.

Fatty acid alkanolamides are good foam boosters. Some preferred alkanolamides are C ₈
To C ₁₈ , preferably C _{12 to} C ₁₆ monoethanolamide,
Diethanolamide and monoisopropanolamide and mixtures thereof.

Other detergent surfactants include the general formula RO (CH ₂ CH ₂ O) _k CH ₂ COO ^- M ⁺ (wherein R is a C _8-22 alkyl group and k is 0-10).
Is an integer and M is a cation); and general formula

[0073]

[Chemical 1] _Where R ¹ is H, a C _1-4 hydrocarbyl group, 2-hydroxyethyl, 2-hydroxypropyl, or a mixture thereof, R ² is a C _{5 -31} hydrocarbyl, and Z is directly linked to the chain. Is a polyhydroxyhydrocarbyl having a linear hydrocarbyl chain having at least three hydroxyl groups), or an alkoxylated derivative thereof.

Betaine is a good foam booster. Betaines, for example, C ₈ -C _18, preferably C ₁₂ -C ₁₆ alkyl betaines, e.g., coco betaines or C ₈ -C _18,
Preferably a C ₁₂ -C ₁₆ acylamido betaine, eg
Cocoamidopropyl betaine, and mixtures thereof, are preferred.

Examples of specific surfactants are: Type: non-ionic sulfonate C ₈ sodium glyceryl ether sulfonate C _12-14 sodium glyceryl ether sulfonate C ₁₆ sodium glyceryl ether sulfonate sodium cocomonoglyceride sulfonate C _8-16 sodium salt of alkyl glyceryl ether sulfonate α-sulfoester and Acid α-sulfomethyllauric acid / sodium myristate α-sulfomethyl sodium myristate α-sulfohexyl sodium laurate α-sulfomethyl / hexyllauric acid / sodium myristate α-sulfomethyl palmitate sodium α-sulfomethyl sodium stearate 2 Suruhoraurin sodium 2-Suruhoparumichin sodium 2-sulfo sodium stearate ^{_{R 1 -C (SO 3 -Na +}} ) -C ₂ R ₂ (In the formula, R ₁
Is _{C 8} ~14, R ₂ is C _{1 to 8)} alkyl isethionate, sodium lauryl isethionate, sodium cocoyl isethionate, sodium sarcosinates lauryl sarcosinate, sodium stearyl sarcosinate, sodium cocoyl sarcosinate, sodium alkyl sulfate lauryl sulfate Sodium Laureto-1 Sodium Sodium Oleyl Sulfate Sodium Cetearyl Sulfate Sodium Cetyl Sulfate R ₁ (OCH ₂ CH ₂ ) _n OSO ₃ —X [wherein R ₁ is C _8-14 , C _16-20 (at least 1 a has a double bond), X is 0 to 18] acyl glutamates cocoyl glutamate, sodium lauryl glutamate sodium myristyl glutamate sodium stearyl glutamate sodium alkyl ether Ca Bokishireto laureth -5-carboxylate palmityl -20 carboxylate _{R 1 (O-CH 2 CH} 2) n CO 2 - ( wherein, R ₁ is C
₈ is a _{~ 18,} n is from 1 to 30) sulfosuccinate laureth sulfosuccinate disodium phosphate monoalkyl _{(C 12 70% / C 14} 30%) sodium phosphate Type: Amphoteric Betaine Coco Betaine Cocamidopropyl betaine palmityl amido betaine isostearoyl amidopropyl betaines sultaines cocoamidopropyl hydroxy sultaine amine oxide palmityl dimethyl amine oxide myristyl dimethylamine oxide coco amidopropyl amine oxide induced solid protein Na / TEAC ₁₂ hydrolyzed keratin present invention The composition optionally comprises from about 1 to about solids.
About 30 wt%, preferably about 4 to about 25 wt%, and more preferably about 5 to about 20 wt% organic non-soap synthetic detergent can be included. Typically, soap / detergent solids are prepared to include a soap to synthetic detergent ratio of about 3: 1 to about 25: 1. Selection of a suitable ratio will depend on the particular synthetic detergent, the desired performance and physical properties of the finished solid, temperature, moisture and similar processing considerations. The preferred ratio is
It is about 4: 1 to about 7: 1.

The solids of the present invention do not require optional ingredients, thus zero is the minimum amount of each optional ingredient. Some preferred solids contain from about 1% to about 65% of a given optional ingredient.

The amounts shown in the table of other ingredients are particularly exemplary in the case of solids containing other optional ingredients. Table of Other Ingredients Practical wt% of Other Ingredients Preferred More Preferred Most Preferred Filler Salts and Salt Hydrates 0.5-50% 0.75-25% 1-15% Water-Soluble Organics 1.0-50% 2-40% 5 〜20% Polymer mildness enhancer 0.25% 〜20% 0.5% 〜10% 1〜5% Other fine water insoluble matter 1〜60% 2〜30% 4〜25% Aluminosilicate / clay 0.5〜25% 1〜 10% 3 to 8% The solid soap composition of the present invention may contain other additives usually incorporated in cosmetic solids, for example, fragrances, other fillers, disinfectants or antimicrobial agents, dyes and the like. .

Polymeric skin mildness aids are described in the aforementioned US Pat. Nos. 4,673,525 and 4,820,
No. 443. Cationic synthetic polymers useful in the present invention include cationic polyalkyleneimines, ethoxypolyalkyleneimines, and poly [N- [3-
(Dimethylammonio) propyl] -N '-[3- (ethyleneoxyethylenedimethylammonio] propyl]
Urea dichloride] (the latter from Milano Chemical Company, Inc.
l) A-15, CAS Reg. No. 68555-36-
It is available under two trademarks].

The preferred cationic polymeric skin conditioning agent of the present invention has a molecular weight of 1,000 to 3,000,
000 is a cationic guar gum class cationic polysaccharide. More preferable molecular weight is 2,500 to 35.
It is 10,000. These polymers have a polysaccharide backbone consisting of galactomannan units and a degree of cation substitution of about 0.04 per anhydroglucose unit to about 0.80 per anhydroglucose unit (substituent cation groups are the natural polysaccharide backbone). It is the addition of 2,3-epoxypropyltrimethylammonium chloride to the chain). Examples are JAGUAR C-14-S, C-15 and C- sold by Celanese Corporation.
Seventeen. In order to achieve the benefits described in the present invention,
The polymer must have either structural or physical properties that allow it to be well incorporated into the soap matrix after being properly and fully hydrated.

The mild skin cleansing solids of the present invention are a mixture of silicone rubber and silicone fluid (rubber to fluid ratio of about 10: 1 to about 1:10, preferably about 4: 1 to about 1: 4). Most preferably about 3: 2 to about 2: 3) from about 0.5% to about 20%.

The use of silicone rubber / fluid blends in shampoos and / or conditioners
U.S. Pat. No. 4,906,459, U.S. Pat. No. 4,788,006, U.S. Pat.
855, U.S. Pat. No. 4,728,457, U.S. Pat. No. 4,704,272, and U.S. Pat. No. 2,826,551.

The silicone component is in an amount effective to provide a skin mildness benefit, eg, about 0.
It can be present in the solids in an amount of 5% to about 20%, preferably about 1.5% to about 16%, most preferably about 3% to about 12%. The silicone fluid used herein represents a silicone having a viscosity at 25 ° C. of about 5 to about 600,000 centistokes, most preferably about 350 to about 100,000 centistokes. The silicone rubber used here has a mass molecular weight of about 200,000 to about 1,000,000.
Represents a silicone having a viscosity of 0 and greater than about 600,000. The molecular weight and viscosity of a particular given siloxane will determine whether it is a rubber or a fluid. The silicone rubber and fluid are mixed together and incorporated into the composition of the present invention.

Other ingredients of the present invention are selected for various applications. For example, fragrances may be used in formulating skin cleansing products, generally in amounts of about 0.1% to about 2.0% of the composition. Alcohol, hydrotrope, colorant, talc, clay, water insoluble fine calcium carbonate,
Fillers such as starch and dextrin can also be used.
Preferred solids of the present invention contain fines, preferably about 3% to about 5% calcium carbonate. These additives make the finished solid composition more attractive or effective without degrading the attributes of the solid. Cetearyl alcohol is a mixture of cetyl alcohol and stearyl alcohol. Preservatives, generally in amounts less than 1% of the composition, such as sodium ethylenediaminetetraacetate (EDTA), can be incorporated into cleansing products to prevent color and odor degradation. Bactericides can also be included, typically in amounts up to 1.5%. The patent discloses or refers to such ingredients and formulations that can be used in the solids of the present invention.

Some solids of the present invention include other soaps, moisturizers, colorants, solvents, fillers, synthetic detergent surfactants, polymeric skin feel / mildness aids, fragrances, preservatives, and the like. At least about 1% of another solid component selected from the mixture of

Compatible salts and salt hydrates can be used as fillers. Some preferred salts are sodium chloride, sodium sulfate, disodium hydrogen phosphate, sodium pyrophosphate, sodium tetraborate.

Generally, compatible salts and salt hydrates include sodium salts, potassium salts, magnesium salts, calcium salts, aluminum salts and lithium of inorganic acids and small (C6 or less) carboxylic acids or other organic acids. salt,
And ammonium salts, the corresponding hydrates, and mixtures thereof. As the inorganic salt, chloride, bromide,
Mention may be made of sulfates, metasilicates, orthophosphates, pyrophosphates, polyphosphates, metaborates, tetraborates and carbonates. As the organic salt, acetate, formate,
Methyl sulfate and citrate are included.

Water-soluble organic substances can also be used to stabilize the appearance of the bar soaps of the present invention. Some preferred water-soluble organics are propylene glycol, glycerin, ethylene glycol, sucrose, and urea, and other compatible polyols.

A particularly suitable water-soluble organic substance is propylene glycol. Other compatible organics are polyols, such as ethylene glycol or 1,7-heptanediol, mono- and polyethylene glycols and mono- and polypropylene glycols with molecular weights up to 8,000, respectively, their mono-C _{1 -4.} Alkyl ether, sorbitol, glycerol, glucose,
Mention may be made in particular of polyhydric alcohols such as diglycerol, sucrose, lactose, dextrose, 2-pentanol, 1-butanol, mono-, di- and triethanolamine, 2-amino-1-butanol.

Water-soluble amine salts can also be used. Monoethanolamine, diethanolamine, and triethanolamine (TEA) chloride salts are preferred.

Aluminosilicates and other clays are useful in this invention. Some preferred clays are US Pat. Nos. 4,605,509 and 4,274,97.
No. 5 specification.

Other types of clays include zeolites, kaolinite, montmorillonite, attapulgite, illite, bentonite, and halloysite. Another preferred clay is kaolin.

Preferred Solid Processing The following method is used to make the illustrated freezer solids of the present invention. The method comprises the following steps: (I) (A) About 30% to about 70 of the above-specified fatty acid soap.
%; (B) a synthetic detergent surfactant as described above, preferably a mild detergent detergent, 0% to about 20%; (C) a non-reducing sugar, preferably sucrose, 0% to about 30%.
%, Preferably about 5% to about 30%, more preferably about 5%
% To about 20% (Note: aeration of sucrose or addition to the freezer soap solids method prepares a workable soap mixture that requires less drying or moisture reduction); (D) Hydrophobic / parent as above. Oily soap solids additive material 0% to about 30%, preferably about 2% to about 25%, more preferably about 5% to about 20%; and (E) water about 15% to about 30%, preferably Mixing a soap composition comprising about 20% to about 25% [the fatty acid,
Add sugar, wax, and other ingredients from about 65 ° C to about 74 ° C (about 1 ° C).
Mix at temperatures of 50 ° F to about 165 ° F; soaps contain selected fatty acids from about 52 ° C to about 57 ° C (125-135 ° F).
Initial temperature of about 85 ° C to about 99 ° C (185-210
Made in situ by blending with dilute NaOH or KOH at a final temperature of ° F); adding other ingredients; and sometimes and preferably the sugar if the mixture is dried to reduce the amount of the water. / Add sucrose after or at the place of drying]; (II) venting the mixture (optional) and adding perfume to the liner mixer with a positive displacement pump or other; (III) scraped wall heat exchanger Mix the mixture using a (freezer) from about 79 ° C to about 99 ° C (175-210 ° F).
From the initial temperature of about 46 ℃ ~ 66 ℃ (115 ~ 155 °
F), preferably about 49 ° C to about 60 ° C (120-140 ° C).
Cooling to a final temperature of ° F) to crystallize the components;
And (IV) extruding the cooled mixture of step III as a soft plug onto a moving belt, then cooling the soft plug to fully crystallize, then stamping and packaging.

A method for producing a non-breathing soap solid from the composition is as follows: (1) As described above, (A) to (E) are mixed,
(2) Cooling the mixture of step I to temperatures as described above, and (3) molding the non-aerated solids (plugs) from the cooled mixture as described above.

The optimum mixing temperature for the above steps can vary depending on the particular formulation. Preferably, the shaped soap bar (plug) of step IV is molded from a mixture that is cooled sufficiently to provide a free-standing bar (plug). The preferred method does not require a moisture reduction step. The plug is preferably molded by an extrusion operation as shown in the aforementioned US Pat. No. 3,835,058.

The non-breathing freezer bar soap composition preferably contains less than about 5% of an organic solvent such as alcohol. Preferably, they contain less than 3% of such organic solvents, more preferably from 0% to less than about 1% of such organic solvents are added. The preferred method has no drying step.

In the continuous freezer solids method, the molded solids (plugs) stand on the belt. Many cast solid compositions that use higher amounts of water and / or organic solvents, such as 40-50% water, will not retain their shape or stand on the freezer solids belt. Similarly, many solids that rely on the formation of large detergent or soap crystals to occur will not stand on the belt.

Often, some of the composition crystallizes in the freezer, giving sufficient viscosity to stand on the belt, causing further solidification while leaving the freezer for further crystallization. . In the case of some preferred solids, the latter crystallization is described in the aforementioned US patent application Ser. No. 07/61.
This results in a substantial structure of the type disclosed in 7,827.

Molded freezer solids (plugs) containing sucrose typically retain their shape better and stand on the belt. In the freezer process,
Lowering the temperature of the composition by a delta of about 10 ° C. to about 60 ° C., preferably about 15 ° C. to about 50 ° C.
Sufficient to make a dimensionally stable plug that will not crash during processing. Of course, the elimination of the costly and time consuming moisture or solvent depletion (drying) steps in the freezer or cast solids method is an advantage. See the aforementioned U.S. Pat. No. 3,835,058 for a schematic diagram of a prior art continuous freezer soap bar process with a water reduction step.

Bar Soap Hand Wash Foam Capacity Test The Hand Wash Foam Test is used to provide an in-use foam volume measurement for the foam performance of skin cleansing solids.
The test measures both the ultimate foam volume generated and the volume generated (to reflect the ease of foaming) after a very short foaming period. Bubble volume occurs under dirty conditions.

Synthetic soils are used for the soiled foam volume test reported here. The prescription and the manufacturing method are
It is described below. Synthetic soil components wt% high Fuck (Hyfac) 430 ^a 1.87 laurate ^b 1.42 Neo - Fat (Neo-fat) 14 ^c 5.68 Neo - Fat 16 ^d 11.16 Neo - Fat 18 ^e 5.40 Neo-Fat 90-04 ^f 9.81 Industrene 226 ^g 1.26 Paraffin wax 7.30 Squalane ^h 3.70 Lanolin anhydrous 19.40 Coconut oil 3.30 Tallow 29.70 100.00% ^a Ohio Shishinati emery Industries, Inc. ^b Ohio Shishinati of emery Industries, Inc. ^c Chicago, Illinois Armor Industrial Chemical Company ^d Chicago, Illinois Armor Industrial Chemical Company ^e Illinois in Chicago Armor Inn Sutoriaru Chemical Company ^f Illinois Robeco Armor Industrial Chemical Company ^g Memphis, TN of Hamuko Products ^h New York, New York Chicago Chemicals
Incorporated method 1. The above materials are combined together with continuous stirring.
Heat at 175 ° F (about 71-79 ° C). 2. Twenty-five parts of the above formulation was mixed with 25 parts of tallow 5% -80% / 20% coconut soap solution and 50 parts of distilled water and 150 °.
Mix at F (about 66 ° C). 3. The mixture is cooled to room temperature with constant stirring. 4. Store in covered glass containers. Equipment The following equipment is used. 1. Sink with water source and temperature control. The water source should be of medium hardness (6-9 g / gal) for most tests (although lower or higher hardness water can be used for special purposes). 2. Synthetic stains (see Table 1). 3. Paper towel. 4. Test solid. 5. Reference solid. Method Use the following method. 1. Temperature is 95-100 ° F (about 35.0-37.8
℃). 2. Rub 0.22cc of dirt into your hand. 3. Get your hands wet. 4. Rotate the solid 3 times with both hands. 5. Add a little water and rub your hands 5 times. 6. Rotate the hand 3 times (without soap) to grade the flash volume. 7. Spin 7 more times to grade ultimate capacity. 8. Bubbles are collected and deposited on the sink top. 9. The volume is compared to the standard solids target volume and a grade is assigned. Grade Scale Dirty 7 Exceptional 6 Much higher than target 5 Higher than target 4 Target volume 3 Slightly lower than target 2 Lower than target

[0101]

EXAMPLE The following example is to illustrate the practice of the present invention, not try to limit. All percentages, parts and ratios herein are by weight unless otherwise noted. The free fatty acids used in the examples are used in approximately the same proportions as the fatty acid soaps. Unless otherwise noted
Produce soap on the spot. The amount of soap is the total soap weight% (wt
%) As well as solids weight% (wt%).

The example soap bar composition was treated at about 190 ° F. (88
℃) and pumped to a scraped wall heat exchanger where the temperature of the mixture is about 130 ° F (55 ° C).
Cool to and vent the mixture. The aerated and cooled soap mixture is then extruded, the solid plug is cut and conditioned. The final solid is then stamped.

The following examples are illustrative and are not intended to limit the scope of the invention. All quantities and ranges, temperatures, results, etc. used herein are approximations unless otherwise noted. Comparative solids vs. Example 1 Approximate chain length distribution (wt%) (wt% relative to total soap is shown in parentheses) Comparative solids (CB) Example 1 Na / K ratio 80/20 75:25 Solids Soap solids In-product soap content wt% wt% wt% wt% C ₈ 1.30 (1.73) 0.91 (1.79) C ₁₀ 1.10 (1.47) 0.78 (1.53) C ₁₂ 9.40 (12.53) 6.72 (13.20) C ₁₄ 6.00 (8.00) 2.81 (5.53) C ₁₆ 16.80 (22.40) 21.66 (42.58) C ₁₈ 13.60 (18.13) 9.67 (19.02) C _{18: 1} 24.90 (33.20) 6.91 (13.59) C _{18: 2} 1.90 (2.53) 1.40 (2.75) Total soap 75.69 50.86 Water 23.76 23.00 Sucrose-7.50 Paraffin (mp52-79 ° C)-7.50 Calcium carbonate-4.00 FFA (same as soap)-6.00 Free caustic substance 0.05-Trace components (fragrances, preservatives) 0.50 1.14 Total 100.00 100.00 Example 1 Comparative solid in the forearm wash test (CB) from a significantly mild and very mild commercial combo solid Neutrokine Gena (Neutrogena ^R) dry skin formulation and approximately Flip position is mild. Approximate Neutrogena ^R formulation Ingredient wt% Na80T / 20Cn Soap 30 TEA80T / 20Cn Soap 30 Free TEA 15 Glycerin 10 Nonionic Surfactant 8.4 Water 5.5 Minor Component 1.1 Total 100.0 Forearm washing test is modified Lukakovic, Dunlap J. Soc. Cosmet. Chem., 39, 355-366 (1), Michaels, Bischer, Watson, "Forearm wash test for assessing the clinical mildness of cleansing products".
(November / December 988). Use 1 week of testing instead of 2 weeks.

The advantages of Example 1 over the comparative solids and other mild solids are as follows. 1. Example 1 is much milder than the comparative solid (CB). 2. The foam volume is about the same (usually the milder solids foam much less). 3. Example 1 has a creamier foam than the comparative solids. 4. Example 1 is made by using a simpler method. 5. Example 1, other solids in mildness class (e.g., Neutrokine Gena ^R) as the quick not worn. 6. Example 1 is less expensive than other solids in the mildness class.

C _{18: 1 in} Example 1 is virtually all cis isomer. The trans / cis content of _{C18: 1} in "CB" is 60/40.

The main differences between CB and Example 1 are as follows.

(1) CB has 9.4% C ₁₂ soap in solids and Example 1 has 6.7% C ₁₂ (delta is 2.7% by weight of solids). ); (2) CB is solid 2
It has a C _{18: 1} of 4.9% by weight and Example 1 is about 6.
It has a C _{18: 1} of 9% by weight (delta is 18%).

Comparative solids (CB) are about 7 total solids.
5 wt% of soap and containing total soap C ₁₂ and C _{18: 1}
Content (weight) is 45.7% (12.5% and 33.5%
%); CB has a C ₁₂ and C _{18: 1} solids weight percentage of 34.3% or a maximum amount of 25% for the inventive solids.
9.3% more. Synthesis Example 2 and 3 approximate chain length distribution (wt%) (total soap shown in parentheses by weight percent of) Example 2 Example 3 Na / K ratio 75:25 67:33 solids in solid soap in component soap wt% wt% wt% wt% C ₈ 0.91 (1.79) 0.76 (1.75) C ₁₀ 0.78 (1.53) 0.65 (1.50) C ₁₂ 6.69 (13.20) 5.70 (13.07) C ₁₄ 2.80 (5.53) 2.43 (5.58) C ₁₆ 21.56 (42.58) 19.28 (44.20) C ₁₈ 9.63 (19.02) 5.09 (11.66) C _{18: 1} 6.88 (13.59) 8.06 (18.48) C _{18: 2} 1.39 (2.75) 1.64 (3.76) Total soap 50.64 43.63 Water 23.00 28.15 Sucrose 6.00 5.58 Paraffin (mp52-79 ℃) 6.00 6.86 Calcium carbonate-3.43 Sodium coconut alkyl glyceryl ether sulfonate (AGS) 8.00 7.51 FFA (same as soap) 4.00 3.43 Trace ingredients 1.86 1.41 Total 100.00 100.00 Examples 2 and 3 are mild And foam as in Example 1. All soap examples 4 and 5 Approximate chain length distribution (wt%) (wt% relative to total soap is shown in parentheses) Example 4 Example 5 Na / K ratio 85:15 85:15 Soap in solid Soap in solid Soap Medium component wt% wt% wt% wt% C ₈ -(-)-(-) C ₁₀ -(-)-(-) C ₁₂ 10.00 (23.26) 7.60 (17.67) C ₁₄ 5.00 (11.63) 4.20 (9.77) C ₁₆ 8.50 (19.77) 9.30 (21.63) C ₁₈ 7.30 (16.98) 8.30 (19.30) C _{18: 1} 11.80 (27.44) 13.20 (30.70) C _{18: 2} 0.40 (0.93) 0.40 (0.93) Total soap 43.00 43.00 Water 23.00 23.00 Sucrose 10.00 10.00 Paraffin (mp52-79 ° C) 15.00 15.00 Calcium carbonate 4.00 4.00 FFA (same as soap) 4.00 4.00 Trace ingredients 1.00 1.00 Total 100.00 100.00 Examples 4 and 5 give varying amounts of C ₁₂ and C _{18: 1} . Have. The cis / trans C _{18: 1} ratio in Examples 4 and 5 is about 1: 1. The foams are acceptable, but the comparative solids with all cis isomers foam better than Examples 4 and 5. Example 6 approximate chain length distribution (wt%) (total soap shown in parentheses by weight percent of) Example 6 Na / K ratio 70:30 solids in soap component _{wt% wt% C 8 - (} -) C 10 - (-) C ₁₂ 8.00 (18.60) C ₁₄ 3.40 (7.91) C ₁₆ 18.40 (42.79) C ₁₈ 1.80 (4.19) C _{18: 1} 9.50 (22.09) C _{18: 2} 1.90 (4.42) Total soap 43.00 Water 23.00 Sucrose 12.00 Paraffin (mp 52-79 ° C.) 13.00 Calcium carbonate 4.00 FFA (same as soap) 4.00 Minor components 1.00 Total 100.00 C _{18: 1} in Examples 6 and 7 is virtually all cis. Example 7 approximate chain length distribution (wt%) (total soap shown in parentheses by weight percent of) Example 7 Na / K ratio 70:30 solid soap in component _{wt% wt% C 12 4.6 (} 12.4) C 14 2.0 (5.4) C ₁₆ 17.9 (48.4) C ₁₈ 1.6 (4.3) C _{18: 1} 9.1 (24.6) C _{18: 2} 1.8 (4.9) Total soap 37.0 Water 30.0 Starch (common corn) 20.0 FFA (same as soap) 3.0 Trace amount Ingredients 1.00 Propylene Glycol 5 Polyethylene Glycol (PEG) 4 Total 100.00 Example 7 has no sugar, wax or synthetic detergent. This example has good foam and is milder than CB.

Example 8 Example 8 is the same as Example 5 except that Example 8 has a C _{18: 1} cis / trans isomer ratio of about 0.8: 1. Example 8
Mild but not as foamy as Example 5. Example 5
It has a lower amount of trans oleic acid soap and has a better foam. Example 9 approximate chain length distribution (wt%) (all shown in parentheses by weight percent of soap) Example 9 Na / K ratio 80:20 solid soap in component _{wt% wt% C 12 10 (} 20) C 14 40 (80) Total Soap 50.0 Water 25.0 Sucrose 24.0 FFA (Same as Soap) 1.0 Total 100.0 Example 9 contains a semi-continuous, relatively hard, interlocking open three-dimensional mesh structure. Compositions at 170 ° F (200
℃) and pumped to a scraped wall heat exchanger where the temperature of the mixture is about 120 ° F (160 ° F).
℃). The mixture is then extruded, the solid plug cut, and then conditioned. The final solid is then stamped.

The solids of Examples 1-9 are milder than the comparative solids (CB) that represent the prior art. Comparative solids are standard freezer solids for foam. Example 4 is example 1
3 and slightly less mild than Examples 5-6, but C
Significantly milder than B.

[0111] Example 1 is a significantly milder than the comparative solid and very mild commercial combo solids Neutrokine Gena ^R Dry Skin formulations and about the same position mild in the forearm wash test.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventors James, Eden, Tanelli United States Ohio, West, Chester, Heron, Drive, 5534 (72) Inventors Robert, Gregory, Bartro United States Ohio, Cincinnati, Rose, Lane , 11783, Apartment, A (72) Inventor Mark, Leslie, Kachher, Ohio, Mason, Montclair, Drive, 9731 (72) Inventor Mary, Elizabeth, Calais, Ohio, Cincinnati, Cedar Hill, Drive, 685 (72) 72) Inventor Lawrence, Allen, Gilbert United States Ohio, West, Chester, Quaker, Li J. Court, 8211 (72) Inventor Dawn, Mary, French United States Ohio, Cincinnati, Sherbrooke, Drive, 3619 (72) Inventor Gerald, Lewis, Chianti United States Ohio, Fairfield, Bent, Tory, Drive, 160-2 Bee

Claims (12)

[Claims] 1. A saturated fatty acid soap selected from the group consisting of (I) myristic acid soap, palmitic acid soap, stearic acid soap and mixtures thereof in an amount of about 65 to about 85% by weight of total fatty acid soap, and (II) ) oleic acid soap and lauric acid soaps and essentially _{C 8, C 10, C 18} : 2 minor fatty acid soaps and selected from the group consisting of soap selected from the group consisting of a mixture thereof from about 15% to about 35%,
(Here, the solid is the predetermined oleic acid soap,
Lauric acid soap and minor soap about 8% to about 25%
The amount of oleic acid soap is from 0 to about 25 of solids.
% By weight; and the laurate soap is 0 to about 10% by weight of the solids; and the minor (C ₈ , C
₁₀ , C _{18: 2} ) soap amount from 0 to about 5% by weight of said solids; and said predetermined lauric acid / oleic acid soap to said minor (C ₈ , C ₁₀ , C _{18: 2} ) soap. Has a ratio of about 1: 1 to about 1: 0; and the soap is a mixture of sodium and potassium soaps (Na / K); and the amount of Na / K soap mixture is about the total soap. 90 to about 10
0% by weight; and the Na / K soap is about 19: 1.
(95/5) to about 1.5: 1 (60/40); and the freezer soap bar is about 30% of the bar.
To about 70% by weight total fatty acid soap), and (III)
Mild lathering personal cleansing freezer soap bar, characterized in that it contains from about 15 to about 30% by weight of the bar of water. 2. The saturated fatty acid soap selected from the group consisting of (I) myristic acid soap, palmitic acid soap, stearic acid soap and mixtures thereof is present in an amount of about 65 to about 80% by weight of the total fatty acid soap. And (II) the predetermined oleic acid soap and lauric acid soap and the minor fatty acid soap are present in an amount of about 20% to about 35%, wherein the solid is the predetermined oleic acid soap, lauric acid soap, and minor _{(C 8, C 10, C} 18: 2) soap from about 8% to about 25
%, The amount of oleic acid soap is about 5 to about 20% by weight of solids; and the laurate soap is about 5 to about 10% by weight of solids; and the minor (C
_{8, C 10, C 18:} 2) from about 1 to about 3 weight percent of the weight soap said solid; and said predetermined lauric / oleic acid soap and the minor soap about 1: 1 to about 1 The Na / K soap mixture amount is about 95 to about 100 wt% of the total soap; and the Na / K
The soap has a ratio of about 90/10 to about 65/35; and the total soap is Mg in an amount of 0 to about 5% by weight of the total soap.
Soaps and other soaps selected from the group consisting of TEA soaps; and wherein the freezer soap solids are by weight of the solids (A) about 35% to about 60% of the total fatty acid soaps; (B) 0 non-reducing sugars. % To about 30%; (C) Hydrophobic / lipophilic soap additive material 0% to about 35%;
And (D) a mild lathering personal cleansing freezer soap bar according to claim 1 comprising from about 20% to about 25% of said water. 3. The predetermined saturated fatty acid soap amount is about 65 to about 80% by weight of the total soap; and the sum of the predetermined minor soap amount, lauric acid soap amount and oleic acid soap amount. From about 10 to about 20% by weight of said solids; and from about 2: 1 to about 1: 1 of said lauric acid / oleic acid soap.
4; and the Na / K ratio is 90/10 to 65/35; and the lauric acid / oleic acid soap and the minor soap have a ratio of about 6: 1 to about 4: 1. A mild, foamable freezer soap bar according to claim 1. 4. The predetermined saturated fatty acid soap amount is about 70 to about 75% by weight of the total soap; and the total amount of the laurate acid soap and the oleic acid soap is about 12 to about the solids. 3. The method according to claim 2, wherein the ratio of lauric acid / oleic acid is about 1.5: 1 to about 1: 3 and the Na / K ratio is 85/15 to 70/30. A mild foaming freezer soap bar as described. 5. The amount of said predetermined saturated fatty acid soap (myristic acid soap, stearic acid soap and palmitic acid soap) is about 20 to about 50% by weight of said solid matter; and said non-reducing sugar is about 5%. Is about 20%; and said hydrophobicity /
The lipophilic substance is about 2% to about 25%; and the water is about 20 to about 25% by weight of the solids; and the solid is about 10 to about 20% by weight of the solids. A mild, foamable freezer soap bar according to claim 2 containing the lauric acid / oleic acid soap of claim 1. 6. The mild lathering freezer soap solids of claim 5, wherein the solids contain from about 4% to about 30% mild lathering synthetic surfactant. 7. The freezer soap bar comprises from about 30% to about 55% of the total fatty acid soap by weight of the bar.
The mild lathering freezer soap bar of claim 1, wherein the oleic acid soap is predominantly cis. 8. The freezer soap solids comprise about 30% to about 55% of the total fatty acid soap by weight of the solids; about 5% to about 20% of the non-reducing sugar; about 5% of the hydrophobic / lipophilic material. %
To about 20%; and about 20% to about 25% of said water;
The mild, foamable freezer soap bar of claim 2, wherein the amount of lauric acid soap and oleic acid soap is about 12 to about 18% by weight of the bar. 9. The soap solids are about 30 to about 55% of the total fatty acid soaps by weight of the solids; and the non-reducing sugars are about 5%.
~ About 20%; about 5% to about 20 of said hydrophobic / lipophilic substances
%; And about 20% to about 25% of said water; and said oleic acid soap cis / trans isomer ratio is from about 1: 0 to about 20: 1. Freezer soap solids. 10. A saturated fatty acid soap selected from the group consisting of myristic acid soap, palmitic acid soap, stearic acid soap, and mixtures thereof in an amount of about 65 to about 85% by weight of (I) (A) total fatty acid soap. (B) Minor selected from the group consisting of oleic acid soap and lauric acid soap and essentially C ₈ , C ₁₀ , C _{18: 2} (C ₈ , C ₁₀ , C _{18: 2} )
Fatty acid soaps and soap from about 15% to about 35% selected from the group consisting of a mixture thereof (wherein the solids above a predetermined oleic acid soap, lauric acid soap, and minor (C _8, C _10, C _{18: 2} ) containing about 8% to about 25% soap; said oleic acid soap amount is 0 to about 25% by weight of solids; and said laurate soap is 0 to about 25% of said solids.
About 10% by weight; and said minors (C ₈ , C ₁₀ ,
C _{18: 2} ) the amount of soap is 0 to about 5% by weight of the solids;
And wherein the predetermined lauric / oleic acid soap to said minor _{(C 8, C 10, C} 18: 2) soap about 1: 1 to about 1: 0 has the ratio of; and said soap is a sodium soap A mixture with potassium soap (Na / K); and the amount of Na / K soap mixture is from about 90 to about 100 of the total soap.
% By weight; and the Na / K soap is about 19: 1 (9
5/5) to about 1.5: 1 (60/40); and said freezer soap bar is about 3% of said bar.
0 to about 70% by weight total fatty acid soap) and (C)
A soap composition containing about 15 to about 30% by weight of the solids of water is mixed [about 6 parts of the fatty acid soap and other soap ingredients.
Mix at a temperature of 5 ° C to about 74 ° C (about 150 ° F to about 165 ° F) and add the soap to about 52 ° C to about 57 ° C (125-1 ° C).
35 ° F. initial temperature and about 85 ° C. to about 99 ° C. (18
5 to 210 ° F.) in situ at a final temperature of 5 to 210 ° F.) and add the other soap ingredients described above.
From about 46 ° C to about 66 ° C
Crystallizing the mixture by cooling to a final temperature of (115-155 ° F), and (III) extruding the cooled mixture of step II onto a cooling belt to complete the crystallization and form a solid (plug). A method for producing a freezer solid, which is characterized by: 11. The method of claim 10, wherein about 5% to about 30% sucrose is added in Step I. 12. The method of claim 10, wherein the mixture of step I is vented before cooling.