JPH0782139A - Improved personal cleansing freezer solid having predetermined fatty acid soap with reduced bathtob ring, improved mildness, ideal bubbles and synthetic surfactant - Google Patents

Abstract

PURPOSE: To obtain a personal cleansing freezer bar having a reduced bathtub ring and improved mildness while maintaining acceptable lathering/sudsing characteristics. CONSTITUTION: This personal cleansing freezer bar contains (A) 25-70 wt.% soap comprising (A1 ) 75-100 wt.% saturated fatty acid soap selected from a myristic acid soap, a palmitic acid soap, a stearic acid soap and a mixture thereof and (A2 ) 0-25 wt.% other soaps, selected from 0-10 wt.% oleic acid soap, 0-10 wt.% lauric acid soap and 0-5 wt.% minor fatty acid (an 8C and a 10C) soap, having (90/10) to (75/25) ratio of the sodium soap/potassium soap and containing 95-100 wt.% amount of an Na/K soap mixture, (B) 5-30 wt.% lathering synthetic surfactant, e.g. a water-soluble salt of an organic sulfonic acid or a water-soluble salt of an aliphatic sulfate ester and (C) 15-30 wt.% water at (5:1) to (1:1), preferably (3:1) to (1.5:1) ratio of the ingredients A:B. Furthermore, a nonreducing saccharide, a hydrophobic/hydrophilic soap additive, as necessary, can be formulated therewith.

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. Said U.S. Pat. No. 3,
The freezer solids described in 835,058 and the modern standard freezer solids disclosed herein have a bad bathtub ring (BTR).

Soap solids produce calcium soap on the walls of bath or shower enclosures when washed and solubilized in hard water (hard water is defined as water containing calcium as CaCO ₃ or CaCl ₂ ). To do. This membrane, called the bath ring (BTR), is difficult to clean and therefore it is desirable to prevent production. Personal cleansing products that do not produce or disperse insoluble calcium soap (BTR) and that do not deposit on shower or bath enclosures are considered to be preferred by consumers.

The freezer solids method is distinguished from the transparent frame milled solids method. Japanese Patent No. J57030-798 discloses a transparent solid “frame kneading” or “molding” soap in which the fatty acids that make up the soap component are myristic acid, palmitic acid, stearic acid. Clear soaps are described in which at least 90% by weight of the fatty acids that make up the soap component are myristic acid, palmitic acid, and stearic acid. 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
It is believed that the method and clear bar soap composition illustrated in -798 are distinct from freezer bar that does not appear to contain synthetic surfactants and is not clear.

Non-smear "mechanical" detergent solids, at least 75% by weight of which (1) are essentially solids of the anionic organic sulfuric acid reaction product which in essence (1) do not undergo unreasonable hydrolysis under alternating wet and dry conditions. 15% to about 55% of said detergent salt, said salt being selected from the group consisting of sodium and potassium salts and said anionic organic sulfuric acid reaction product containing at least 50% of alkyl glyceryl ether sulfonate, of which about 10% To about 30% of the alkyl glyceryl ether sulfonate is an alkyl diglyceryl ether sulfonate, wherein the alkyl group has about 10 to about 20 carbon atoms), (2) a water-soluble soap of a fatty acid having about 10 to about 18 carbon atoms. About 5% to about 50%, and (3) a freshly precipitated calcium soap of a fatty acid having about 10 to about 18 carbon atoms,
Selected from the group consisting of freshly precipitated magnesium soaps of fatty acids having from about 10 to about 18 carbon atoms, starches, normally solid waxes that will become plastic under the conditions encountered in soap milling, and mixtures thereof. About 2 binder materials
0% to about 70%] in US Pat.
88,511. Freezer soap bars are distinguished from machined soap bars.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mild, good foaming freezer bar soap with a reduced bath ring.

Another object is to provide a freezer bar soap which has a reduced bathtub ring and is also mild.

Yet another object of the present invention is to provide a good foaming freezer solid having a reduced bath ring without damaging the mildness.

Yet another object is to provide such a freezer solid which is processable. Other objects of the invention will be apparent in light of the disclosure below.

The present invention relates to an improved freezer bar soap containing a predetermined saturated C _{14 to} C ₁₈ fatty acid soap and a foaming synthetic surfactant. The solids of the present invention have reduced bath ring as well as improved mildness while maintaining acceptable lather / foaming properties.

The present invention is directed to an improved freezer bar soap having a reduced bath ring containing a predetermined saturated C _{14 to} C ₁₈ fatty acid soap and a foaming synthetic surfactant.

Such freezer bar soaps are prepared using the methods generally disclosed in the aforementioned US Pat. No. 3,835,058.

The solids of this invention have improved bath ring and mildness while maintaining acceptable lather properties.

The present invention broadly relates to (I) from about 25 to about 70% by weight of solids soap, the soap consisting essentially of myristic acid soap, palmitic acid soap, stearic acid soap and mixtures thereof. Consisting of a saturated fatty acid soap selected; said soap counterion selected from the group consisting of sodium soap / potassium soap (Na / K); said Na / K soap from about 100/0 to about 75/25
(The symbol "100/0" means 100% sodium soap / 0% K soap)]; (II) about 5 to about 30% by weight of the solids of a foamable synthetic surfactant. And (III) about 15 to about 30% by weight of the solids of water, and the soap and the foaming synthetic surfactant are about 5: 1 to about 1: 1, preferably about 3: 1. From about 1.
It is defined as a mild lathering personal cleansing freezer soap bar with reduced bath ring characterized by having a 5: 1 weight ratio.

The preferred solids are: (I) from about 25 or 30 to about 70% by weight of the solids of total fatty acid soap, said total soap being (a) about 75 ± 3 of total fatty acid soap.
% To about 100% by weight of myristic acid soaps, palmitic acid soaps, stearic acid soaps and saturated fatty acid soaps selected from the group consisting of a mixture thereof; and (b) oleic acid soap and lauric acid soaps and essentially C ₈ , C
_10, C _18: 0% ~ about 25% ± 3% soap "other" is selected from the group consisting of minor fatty acid soaps and mixtures thereof selected from ₂ the group consisting of soap (% by weight of the total soap)
The soap counterion is selected from the group consisting of sodium soap and potassium soap (Na / K);
/ K soap has a percentage ratio of about 100/0 to about 75/25 ("100/0" is 100% Na soap and 0 K soap).
%), And the amount of oleic acid soap is 0 to
About 10% 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} ) the amount of soap is 0 to about 5% by weight of the solids); and (II) about 5 to about 30% by weight of the solids. Synthetic surfactants; (III) optionally non-reducing sugars from about 5% to about 30%; (IV) hydrophobic / lipophilic soap solids additive materials from about 0.2% to about selected from the materials disclosed below. 35%; and (V) further comprising from about 15% to about 30% by weight of the solids of water, and the total soap and the foaming synthetic surfactant have a ratio of about 5: 1 to about 1: 1. It is defined as a mild lathering personal cleansing freezer soap bar with a reduced bath ring characterized by:

Certain saturated fatty acid soaps and "other soaps"
The total amount of soap is about 75% to about 100%, and 0% to about 25%, respectively. As long as the amount of each "other soap" is within the range of the "weight of solids" amount as defined herein, the ends of these amounts (25% and 75%) are variable. (± 3%). In other words, about 25 of total soap
The weight percent of other soaps can be as much as 26-28 weight percent of total soap, but the amount of laurate soap should not exceed about 10 weight percent of solids.

In view of the definition here, a more preferable low BT
An R-forming mild lathering personal cleansing freezer soap bar would be apparent.

Some preferred solids are those of 1990 11
It is possible to have a substantial amount of soap structure as disclosed in U.S. patent application Ser. No. 07 / 617,827, filed on May 26, "Molded Solids Made of Hard Enmeshing Mesh of Neutralized Carboxylic Acids". Such solids may have less smear formed when left in wet soap dishes. Such solids are neutralized carboxylic acids,
That is, it consists of a structure that is a continuous or semi-continuous, relatively hard, interlocking open three-dimensional crystalline mesh of a given fatty acid soap, particularly saturated sodium fatty acid soap, as defined herein.

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 mesh 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.

Within the scope of the present invention are several different preferred embodiments. Amounts, parts, percentages, temperatures, ranges and ratios herein are by weight unless otherwise noted. Note that the amount of soap expressed here may depend on the weight percent (wt%) of the total soap and may also depend on the wt% of solids. All numerical limits, ranges, ratios, etc. are approximations unless otherwise indicated.

Soap The solids of the present invention contain soap in an amount of 25 to 70% by weight of solids, preferably 25 to 60% by weight, more preferably 30 to 50% by weight.

Suitable fatty acid soap components for use in the compositions and methods of the present invention include higher fatty acid sodium soaps as defined herein and mixtures of sodium and potassium soaps. Mixtures of sodium and potassium soaps are preferred for foam. Other cations with similar properties, such as triethanolammonium (TEA), 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 the total soap, preferably about 0 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 insoluble C ₁₈ insoluble was obtained without obtain not insoluble here soap term "insoluble" as used herein refers to the soap not soluble than sodium myristate NaC _14.

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

Traditionally, increasing the relatively more soluble soap improves foam. It would be expected that soluble soap would not readily rinse and form soap scum (BTR). It is surprising that minimizing the relatively more soluble soap and using large amounts of insoluble soap actually reduces BTR and improves mildness. Foam can be maintained in these solids containing large amounts of insoluble soap by balancing the amount of KvsNa soap, cis C _{18: 1} vs trans C _{18: 1} , sucrose amount and synthetic surfactant amount.

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 is generally about 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%.

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 sodium soap is preferably at least about 75% of the total soap present in the bar. Na / K
The percentage of soap is 100/0 to 75/25. When used, the amount of TEA or magnesium soap should not exceed about 1/10 of the total amount of soap, preferably less than about 1/20 (5%) of the total amount of soap.

The terms "soap" and "fatty acid (FA) salt" as used herein are sometimes interchangeable. "Soap" is commonly used because it has a common meaning and is easier to have. The term soap as used herein can mean a single fatty acid soap or a mixture of fatty acid soaps.

As shown in Table 2, the fatty acid (F
A) Soap consists essentially C ₁₄ -C ₁₈ FA soap. Some "other" soap can be present, but is not preferred due to reduced bath ring. Table 2 Total fatty acid soap Total range Preferred More preferred FA chain C _14-18 75-100% 85-100% 95-100% Tables 3 and 4 list other FAs that can be used in the compositions of the present invention.
Indicates the amount of soap. Some preferred compositions are essentially free of these other FA soaps. Examples of "minor than water-soluble soaps" is, C ₈ present in 0 an amount of about 5% by weight of solids, C _10, C _{18: 2} and the like. Such minor soaps promote foam but produce more bathtub rings. Table "other soap" three solids in: C _12, unsaturated and / or minor chain soaps% wider preferred more preferred C ₁₂ + C _{18: 1} + minor 0-17% 0-10% 0-5% Table 4 solid maximum wt% maximum preferred more preferred C ₁₂ 10% 0~5% 0~1% of the "other" soap midsole _{C 18: 1 10% 0~5%} 0~1% minor 5% 0-5 % 0-1% Synthetic Detergent Surfactant The solids of the present invention, by weight of solids, are synthetic detergent surfactants, preferably from about 5% to about 30% mild foaming synthetic detergent surfactants, preferably. Contains about 10% to about 30%, more preferably about 10% to about 25%.

Generally, the soap / synthetic detergent bar is prepared to contain a ratio of soap to synthetic detergent of from about 5: 1 to about 1: 1. The preferred ratio is about 3: 1 to about 1.5: 1. Selection of a suitable ratio will depend on the particular synthetic detergent, soap chain distribution, desired performance and physical properties of the finished solid, processing temperature, moisture content and other processing considerations.

Foaming synthetic surfactants are defined herein as surfactants or synthetic surfactant mixtures which have a foam which is better than sodium palmitate, preferably which is better than sodium myristate.

Synthetic detergent surfactants are 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,
It can be used in the solid composition of the present invention. Particularly desirable is a foaming synthetic detergent surfactant and / or a synthetic detergent surfactant which is a good dispersant for soap curds formed in hard water.

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 sulfate, that is, from the group consisting of an alkyl group having 10 to 22 carbon atoms, a sulfonate ester group and a sulfate ester group in the molecular structure Water-soluble salts of organic sulfuric acid reaction products having a selected group are mentioned.

Synthetic sulphate 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 sulphates which can be used as appropriate include water-soluble salts of sulphates of polyhydric alcohols which have been 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 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 are represented by 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

[0050]

[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 protein Na / TEAC ₁₂ hydrolyzed keratin water solids in The amount of water 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 When used, the optional but preferred non-reducing sugars are used in an amount of about 5 to about 30% by weight of solids, preferably about 5 to about 20%. Sugar can be used to replace some of the soap. The net effect of less soap in this case is a corresponding mildness benefit. Also, the use of sugar has freezer solids processing benefits and possibly foam benefits by increasing the solubility of the solids.

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 noted, 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 unexpected and dramatic thinning effect on freezer bar soap mixtures. Its use can eliminate the need for excess water or solvent for intimate mixing. In other words, sucrose reduces the viscosity profile of the soap mixture 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 invention are hydrophobic / lipophilic (hydrophobic)
The soap bar additive material may contain 0% to about 35%, preferably about 0.2% to about 25%, more preferably about 5% to about 15 or 20%. Preferably, the hydrophobic / lipophilic substance comprises (1) wax, (2) free fatty acids (FFA), mono-, di- and triglycerides, and from about 8 to about 18 carbon atoms in each acyl or alkyl group. Selected from the group consisting of other hydrophobic substances, including fatty alcohols, and (3) mixtures thereof (maximum of said wax is about 25%, maximum of said other hydrophobic substances is solid). Of about 10% by weight). A small amount of free fatty acids (0.2
%) Can be used.

Hydrophobic optional ingredients for use in the present invention are selected from waxes; mono-, di- and triglycerides; fatty acids; fatty alcohols; other similar substances; 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 one of the examples.

Depending on the specifics, the hydrophobic material may be present in the preferred solids of the present invention in an amount of from about 0.2% to about 30% or 35%, but preferably from about 5% or 10%.
Used in an amount of about 20% or 25%.

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 more sucrose is present,
Many such hydrophobic materials 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. Preferred illustrations of solids of this invention have equal good foaming properties for industrial standard ventilation freezer bar soap Ivory (IVORY ^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).

A 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 by the National Wax Company, respectively.
It is sold under the trade names 9182, 6971 and 6975 with 0 ° F (about 55 ° C) and 155 ° F (about 68 ° C).

Depending on the paraffin chosen, the paraffin is preferably present in the solids in an amount of from about 5 or 10 to about 15 or 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 foaming 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 0.2% or 0.5% to about 8%. The preferred amount of fatty acid is from about 1% or 2% to about 6%.
% Or 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 may exhibit 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.

The solids of the present invention require no 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 for 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 1〜40% 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 of the 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 carboxylic acids (C6 or less) 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 Solids Processing The following method is used to make the illustrated freezer solids of the present invention. The method comprises the following steps: Step 1-Mixing (I) About 25 or 30 to about 60 or 7 of the solids.
0% by weight of soap (depending on the formulation), said soap consisting essentially of saturated fatty acid soaps selected from the group consisting of myristic acid soaps, palmitic soaps, stearic acid soaps and mixtures thereof; said soap counterion being sodium soaps And potassium soap (Na / K); said Na / K soap having a percentage of about 100/0 to about 75/25); (II) about 5 to about 30% by weight of said solids. (III) about 15 to about 30% by weight of water of the solids (the soap and the foamable synthetic surfactant are about 5: 1).
To about 1: 1, preferably about 4: 1 to about 1: 1 ratio of fatty acids, sugars, waxes and other ingredients to about 65 ° C.
To about 74 ° C (about 150 ° F to about 165 ° F); soaps mix selected fatty acids from about 52 ° C to about 57 ° C.
5 to 135 ° F) initial temperature and about 85 ° C to about 99 ° C
Produced in situ by blending with dilute NaOH and KOH at a final temperature of (185-210 ° F); adding other ingredients; and if drying the mixture to reduce the amount of water and sometimes: Preferably the sugar / sucrose is added after or at the place of drying).

Step 2 Aerate the mixture (optional) and add perfume to the liner mixer with a positive displacement pump or otherwise.

Step 3 Using a scraped wall heat exchanger (freezer), bring the mixture from an initial temperature of about 79 ° C to about 99 ° C (175 to 210 ° F) to about 46 ° C to about 66 ° C (115 to 155 ° F). ),
Preferably about 49 ° C to about 60 ° C (120-140 ° F)
The components are partially crystallized by cooling to the final temperature of.

Step 4 The cooled mixture from step 3 is extruded as a soft plug onto a moving belt, then the soft plug is cooled, fully crystallized, then stamped and packaged.

A preferred mild, lathering personal cleansing freezer soap bar with reduced bath ring is any of the preferred formulations in Step 1,
For example, (I) about 30 to about 70% by weight of solids total fatty acid soap (wherein the total soap is (a) about 75 to about 100% by weight of total fatty acid soap, myristic acid soap, palmitic acid soap, stearin). Saturated fatty acid soaps selected from the group consisting of acid soaps and mixtures thereof; and (b) oleic acid soaps and lauric acid soaps and minor fatty acid soaps selected essentially from the group consisting of C ₈ , C ₁₀ , C _{18: 2} and Containing 0% to about 25% of a soap selected from the group consisting of mixtures thereof; said soap counterion selected from the group consisting of sodium soap and potassium soap (Na / K); said Na / K
Soap has a percent ratio of about 100/0 to about 75/25;
The oleic acid soap is 0 to about 10% by weight of the solids; and the laurate soap is 0 to about 10% of the solids.
% By weight; and said minors (C ₈ , C ₁₀ ,
C _{18: 2} ) the amount of soap is 0 to about 5% by weight of said solids); and (II) about 5 to about 30% by weight of said solids, a foamable synthetic surfactant; (III) non Reducing sugars about 5% to about 30%; (IV) about 0.2% to about 3 hydrophobic substances as defined herein.
5%; and (V) about 15 to about 30% water by weight of the solids (about 5% by weight of the total soap and the foaming synthetic surfactant).
1 to about 1/1, preferably having a ratio of about 4/1 to about 1/1).

A method of making a non-breathing soap solid from the composition is (1) mixing any of the formulations of the present invention as described above, and (2) bringing the mixture of step 1 to the temperature as described above. Cooling, 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 solids (plugs) of step 4 are molded from a mixture that is cooled sufficiently to provide a self-supporting solids (plugs). 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.

Non-breathing freezer bar soap compositions preferably contain less than about 5% of organic solvents such as alcohols. 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.

Often, some of the composition crystallizes in the freezer to give sufficient viscosity to stand on the belt, resulting in hardening of the solids, with further crystallization occurring after leaving the freezer. . 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 are typically formulated to better retain their shape 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., results in a dimensionally stable plug that does not collapse during processing. Is enough to make. 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.

Performance Test Method Bathtub Ring (BTR) Test Principle : The performance test is that bathtub residue in a hard water
R) Determine how well the formation is suppressed. Specifically, the card grade is a measure of how many cards cover the entire bath surface after draining, the ring grade is a measure of how much debris remains on the wall of the bath after draining, and Appearance rating is measured by grading the water in the bath after use. Use all three grades.

This condition at home would be similar to the standard BTR test after the foaming test was completed before draining the basin used in the test.

Water agitation should be attempted after stirring the water in the basin and allowing the surface to settle. The water appearance is 1
It should be rated on a scale of 10.

Accumulation of airborne soap particles, water haze and other residues will be found at the bottom of the grade scale. The top of the scale should not include the above and should preferably be as transparent as possible under the circumstances.

[0108] Therefore, CB shown in the example, should receive the grade of 3; Zest (ZEST ^R), milled bar soap (commercially available) should be 7 and grading. For example, Zest
^R lot 817A is sodium tallowate, sodium cocoate, sodium cocoglyceryl ether sulfonate, magnesium tallowate, water, sodium sulfate, magnesium cocoate, sodium chloride, lauric acid, triclocarban, sodium silicate, masking fragrance, It has commercially available components of titanium dioxide and chrome green. This would allow room for grading of conditions worse than those found with CB soaps and the improvement would be low BT.
It goes beyond the scope of Zest ^R , the standard for ^R. Other soap solids are usually found between these two grading points and reasonable grading and ranking of the tested products should be ensured. Method Put a rubber stopper in the hole in the dishwashing container. Rinse the dishwashing vessel with tap water and then with 0 Glen water. Hardness 14
100 ° F (about 37.8 ° C) for a hardness solution equal to Glen
Add 1 gallon of 0 Glen water. Adhere the black tile to the side of the dishwashing container with an adsorber. Dry hands
Add 0.2cc of dirt to your hand and rub it into your palm.

Place the solid to be tested in one hand and then gently place the soiled hand in a pan of water for 5 seconds. Take the hand out of the water and rotate the solid in the hand 10 times for about 10 seconds (5 complete rotations). Lay the solid aside; add 2 ml of water per dispenser to the palm of one hand to add a little more water (this gives a larger volume of foam). The palm is rubbed in a circular motion 5 times, then the hands are rotated 10 times together in about 20 seconds and rubbed to produce a bubble. Rinse both hands gently into the dishwasher at the far end, pull back through the water and lift on the back of the pan.

Wait one minute. Repeat the bubbling operation, but do not add dirt to both hands in this second wash.
Wait 3 minutes. Using your fingertips (with your finger slightly removed), gently stroke the water 5 times from one end of the pan to the other. Wait 10 seconds for the water to settle and grade the water appearance.

Pull the stopper out of the hole and drain the water from the pan,
Or if you use a pan that does not have a drain hole,
Use a siphon hose.

The tiles are removed from the dishwashing vessel and rinsed by dipping the tiles in a beaker or bucket of 0 grain water. Set tile aside 1 hour before grading bathtub ring. Immediately after rinsing, grade the curd on the side and bottom of the pan.

Before running the next BTR test, clean the dishwashing container under running tap water by wiping with a sponge or cloth to remove any residue left on the pan.

The solids of this invention have a BTR rating of about 4 to about 8. A BTR rating of about 5 to about 7 is preferred. Also, the solids of the present invention are milder than the CB freezer solids standard.

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 above). 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 Fouled 7 Special 6 Much higher than target 5 Higher than target 4 Target volume 3 Slightly lower than target 2 Lower than target Solids of the present invention are commonly assigned simultaneously filed May 30, 1991. Pending US Patent Application No. 07 / 707,52
No. 0 Illustrated Mild All Soap and Combo Freezer Improved Bathtub Ring Over BT (BT
R).

[0117]

EXAMPLE The following examples are intended to illustrate the practice of the present invention and are not intended to be limiting. All percentages, parts and ratios herein are by weight unless otherwise noted. All quantities and ranges, temperatures, results, etc. used herein are approximations unless otherwise noted. Soap amount is the total soap weight%
(Wt%) as well as solids weight% (wt%).

The free fatty acids used in the examples are used in approximately the same proportions as the fatty acid soaps.

Soaps are manufactured in situ unless otherwise noted.

The example soap bar composition was treated at about 190 ° F. (88
Mix at a temperature of (° C.), aerate and pump into a scraped wall heat exchanger. Cool the aerated mixture, then 64
Extrude at freezer exit temperature of 147 ° F (14 ° C), cut solid plug, and condition. The final solid is then stamped. Comparative solids vs. Example 1 Approximate chain length distribution (wt%) (give weight% of total soap in brackets) Comparative solids (CB) Example 1 Na / K ratio 80/20 85:15 Solids Soap solid Soap in composition wt% wt% wt% wt% C ₈ 1.30 (1.73)-(-) C ₁₀ 1.10 (1.47)-(-) C ₁₂ 9.40 (12.53) 3.33 (10.00) C ₁₄ 6.00 (8.00) 3.33 (10.00) C ₁₆ 16.80 (22.40) 13.31 (40.00) C ₁₈ 13.60 (18.13) 13.31 (40.00) C _{18: 1} 24.90 (33.20)-(-) C _{18: 2} 1.90 (2.53)-(-) Total soap 75.69 33.28 Water 23.76 23.00 Sucrose-7.00 Paraffin (mp 52-79 ° C)-11.00 Sodium coconut alkyl glyceryl ether sulfonate (AGS)-6.50 FFA (same as soap)-1.00 Free caustic 0.05-Cocoamidopropyl betaine-3.75 Lauroyl sarcosinate sodium - 12.00 trace components (fragrances, preservatives) 0.50 2.47 total 100.00 100.00 BTR (water / card / tile) 3/3/3 5/5/4 dirty foam (flash / electrode ) In 5.0 / 5.5 4.0 / 5.0 Example 1, C _14, C ₁₆ and C ₁₈ soap, a 90% by weight of the total soap. The advantages of Example 1 over the comparative solids and other mild solids are as follows. 1. Example 1 has a much better (lower) BTR than the comparative solids (CB). 2. Example 1 is much milder than CB. 3. Example 1 has a creamier foam than the comparative solids. 4. Example 1 is made by using a simpler method than CB. 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.

Example 1 has a C ₁₂ of 3.33%; CB a C ₁₂ of 9.40%; CB a C _{18: 1} of 24.9% by weight of solids and Example 1 contains 0% by weight of solids of C
_{With 18: 1} .

Comparative solids (CB) are about 7 total solids.
5 wt% of soap and containing total soap C ₁₂ and C _{18: 1}
The content (weight) is 45.7% (12.5% and 33.2%).
Be a%); CB of C ₁₂ and C _{18: 1} solids weight percent is much greater than the maximum amount when the solids of the present invention 34.
3%.

[0123] Example 1 is a very mild commercial combo solid Neutrokine Gena (Neutrogena ^R) from significantly milder in significantly better and forearm wash test than the comparative solid (CB) at reduced bathtub ring. Approximate Neutrogena ^R formulation component wt% Na80T / 20Cn soap 30 TEA80T / 20Cn soap 30 Free TEA 15 Glycerin 10 Nonionic surfactant 8.4 Water 5.5 Trace component 1.1 Total 100.0 Forearm washing test Revised Lukacovic, Dunlap, Michaels, Vischer, Watson, "Forearm wash test for assessing the clinical mildness of cleansing products," J. Soc. Cosmet. Chem., 39, 355-366 (1).
(November / December 988). Test 1 week and 1
Use 4 washes per day for 2 weeks and 2 times per day instead of 2 washes. Examples 2 and 3 approximate chain length distribution (wt%) (total soap give wt% in parentheses) Example 2 Example 3 Na / K ratio 100/0 100/0 solid in soap was solid soap in component wt % wt% wt% wt% C ₁₂ 4.07 (13.00) 8.14 (26.00) C ₁₄ 4.43 (14.00) 9.40 (30.00) C ₁₆ 11.9 (38.00) 8.77 (28.00) C ₁₈ 10.96 (35.00) 5.01 (16.00) Total soap 31.32 31.32 Water 23.00 23.00 Sucrose 8.00 8.00 Paraffin (mp52-79 ° C) 12.00 12.00 Sodium coconut alkyl glyceryl ether sulfonate (AGS) 7.00 7.00 FFA (same as soap) 2.00 2.00 Cocoamidopropyl betaine 4.00 4.00 Sodium lauroyl sarcosinate 10.5 10.00 Trace ingredients (Fragrance, preservative) 2.18 2.18 Total 100.00 100.00 BTR (water / card / tile) 5/5/4 6/6/5 Dirt foam (flash / extreme) 4.5 / 4.5 5.0 / 5.5 Example 3 is for C ₁₂ soap 26% by weight of soap is not suitable for mildness.

Examples 2, 3, 6 and 7 are freezer solid formulations which are screened as framed solids for studying BTR and foam. In Examples 2 and 3, the respective C ₁₄ , C ₁₆ and C ₁₈ soaps are about 87% and 84% by weight of total soap. The relative bath ring performance of these examples was significantly better than that of comparative solids (CB) and C
Mild than B. Examples 4 and 5 Approximate chain length distribution (wt%) (weight% of total soap is given in parentheses) Example 4 Example 5 Na / K ratio 100/0 100/0 Solids in soap Solids in soap Component wt % wt% wt% wt% C ₁₄ 1.11 (2.5) 33.10 (100) C ₁₆ 23.07 (52.0)-(-) C ₁₈ 20.18 (45.5)-(-) Total soap 44.36 33.10 Water 24.00 25.50 FFA (same as soap) 1.17 1.10 Cocoamidopropyl betaine 9.34 5.52 Sodium lauroyl sarcosinate 11.67 7.72 NaCl 3.11 1.15 Propylene glycol 5.84-Petrolatum-22.07 Alt white clay-3.31 Trace ingredients (fragrances, preservatives) 0.51 0.53 Total 100.00 100.00 BTR (water / card / tile) 6/6/5 4/3/4 Dirt foam (flash / extreme) 4.0 / 4.5 4.0 / 4.0 Freezer outlet temperature 139 ° F (59 ° C) 143 ° F (62 ° C) Examples 6 and 7 Approximate chain length distribution (wt %) (total weight percent of soap give in parentheses) example 6 example 7 Na / K ratio 85/15 100/0 solids in鹸中solids in component wt% soap _{wt% wt% wt% C 14} 8.14 (26.00) - (-) C 16 11.9 (38.00) 15.66 (-) C 18 11.28 (36.00) 15.66 (-) C 18: 1 5.01 (16.00)-(-) Total Soap 31.32 31.32 Water 23.00 23.00 Sucrose 8.00 8.00 Paraffin (mp52-79 ℃) 12.00 12.00 Sodium coconut alkyl glyceryl ether sulfonate (AGS) 7.00 7.00 FFA (same as soap) 2.00 2.00 Cocoamidopropyl Betaine 4.00 4.00 Sodium lauroyl sarcosinate 10.5 10.5 Trace ingredients (fragrances, preservatives) 2.18 2.18 Total 100.00 100.00 BTR (water / card / tile) 6/6/5 7/7/6 Dirt foam (flash / extreme) 5.0 / 5.5 4.0 / 4.5 In Examples 4 and 7, the respective C ₁₄ , C ₁₆ and C ₁₈ soaps were about 100% by weight of total soap. The bath ring performance of these solids is much better and milder than CB.

The solids of Examples 1-7 are milder than the comparative solids (CB) representative of the prior art and have significantly better (lower) BTR. Comparative solids are standard freezer solids for foam.

[0126] Additionally, Example 1, in the forearm wash test, comparative solid (CB) from a significantly mild and very mild commercial combo solids Neutrokine Gena ^R
Significantly milder than dry skin formulations.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventors James, Eden, Tanelli United States of America Ohio, West, Chester, Heron, Drive, 5534 (72) Inventors Richard, William, Shell Ohio, Loveland, Old, United States, Mill, Road, 829 (72) Inventor Mark, Leslie, Kachar United States of America Ohio, Mason, Montclair, Drive, 9731 (72) Inventor Mary, Elizabeth, Calais, Ohio, USA Cincinnati, Cedar Hill, Drive, 685 (72) Inventor Lawrence, Allen, Gilbert, Ohio, West, Chester, Quaker, Ridge, Court, 8211, Ohio, USA (72) Inventor Dawn, Marie, French United States Ohio, Cincinnati, Sherbrooke, Drive, 3619 (72) Inventor Gerald, Lewis, Chianti United States Ohio, Fairfield, Bent, Tree, Drive, 160-2 Bee

Claims (13)

[Claims] 1. I) from about 25 to about 70% by weight of solids of soap, provided that the soap is a saturate selected from the group consisting essentially of myristic acid soap, palmitic acid soap, stearic acid soap and mixtures thereof. Consists of fatty acid soaps; said soaps are sodium soap / potassium soap mixtures (Na / K)
The Na / K soap is about 90/10 to about 75 /
The saturated fatty acid soap having a% ratio of 25 and selected from the group consisting of (A) myristic acid soap, palmitic acid soap, stearic acid soap and mixtures thereof in an amount of about 75 to about 100% by weight of total fatty acid soap. Exist in; and (B)
Oleic acid soap and lauric acid soaps and minor fatty acid _{(C 8, C 10, C} 18: 2) Another soap selected from the group consisting of soaps present in 0 an amount of about 25% by weight of the total soap, the The amount of oleic acid soap is 0 to about 10% by weight of the solid
In it, and the lauric acid soaps is from 0 to about 10 wt% of said solids; and the minor (C _8, C _10, C
_{18: 2} ) the amount of soap is 0 to about 5% by weight of the solids; and the amount of Na / K soap mixture is about 95 to about 100% by weight of the total soap) (II) of the solids (5) about 5 to about 30% by weight of a foamable synthetic surfactant; and (III) about 15 to about 30% by weight of water of the solids, and the soap and the foamable synthetic surfactant are about 5%. Mild lathering personal cleansing freezer soap bar with reduced bath ring, characterized in having a ratio of 1: 1 to about 1: 1. 2. The Na / K soap has a ratio of about 90/10 to about 70/30 and the total soap is from Mg soap and TEA soap in an amount of 0 to about 5% by weight of the total soap. (A) about 30% to about 60% of the total fatty acid soap by weight of the solids; and (b) about 5% to about 30% of non-reducing sugars. %; (C) Hydrophobic / lipophilic soap additive material from about 0.2% to about 3%
5%; and (d) from about 15% to about 25% of said water, a mild, lathering personal cleansing freezer soap bar according to claim 1. 3. The predetermined saturated fatty acid soap amount is about 90 to about 100% by weight of the (total) soap; and the Na / K ratio is 90/10 to 80/20. Mild foaming freezer soap solids as described in. 4. The mild foaming freezer soap bar of claim 2 wherein said predetermined saturated fatty acid soap amount is from about 95 to about 100% by weight of the total soap. 5. The amount of said predetermined saturated fatty acid soap (myristic acid soap, stearic acid soap and palmitic acid soap) is about 30 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. The mild, foaming freezer soap bar of claim 2 containing non-reducing sugar. 6. The mild lathering freezer soap solids of claim 5, wherein said solids contain from about 10% to about 30% mild lathering synthetic surfactant. 7. The freezer soap bar comprises from about 30% to about 50% of the fatty acid soap by weight of the bar; and the soap / synthetic surfactant ratio is 3: 1 to 1.5 :.
The mild lathering freezer soap bar of claim 1 which is 1. 8. The freezer soap solids comprise about 30% to about 50% of the fatty acid soap by weight of the solids; about 5% to about 20% of the non-reducing sugars; about 5% of the hydrophobic / lipophilic substances. ~
The mild lathering freezer soap bar of claim 2 comprising about 20%; and about 20% to about 25% of said water. 9. The soap solids are about 30 to about 50% 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.
Mild foaming freezer soap solids as described in. 10. In step 1, (I) about 25 to about 70% by weight of solids of soap (provided that
The soap is essentially myristic acid soap, palmitic acid soap,
Consisting of saturated fatty acid soaps selected from the group consisting of stearic acid soaps and mixtures thereof; said soap being a sodium soap / potassium soap mixture (Na / K); said Na / K soap being from about 90/10 to about 75 / (II) about 5 to about 30% by weight of the solids of a foaming synthetic surfactant; and (III) about 15 to about 30% by weight of the solids of water. Mixing a soap composition, wherein the soap and the foaming synthetic surfactant have a ratio of about 5: 1 to about 1: 1, where the fatty acid soap and other soap bar ingredients About 65 ° C to about 74 ° C (about 150 ° F to about 1
65 ° F.); mix the soap at about 52 ° C. to about 5 ° C.
Initial temperature of 7 ° C (125-135 ° F) and about 85 ° C
To about 99 ° C (185-210 ° F) at a final temperature and added in situ with the other soap ingredients described above.] In Step 2, add the mixture of Step 1 from about 85 ° C to about 99 ° C.
From about 175 ° F to about 210 ° F) to about 46 ° C
Cool to a final temperature of 115 to 155 ° F. (115 to 155 ° F.) (cool in a scraped wall heat exchanger to partially crystallize the mixture) and in step 3, cool the cooled mixture of step 2 into a soft plug. As a freezer, followed by further cooling to sufficiently crystallize and then stamping to form a solid. 11. The method of claim 10, wherein about 5% to about 30% sucrose is added in step 1. 12. The method of claim 10, wherein the mixture of step 1 is vented before cooling. 13. (I) from about 25 to about 70% by weight of solids total fatty acid freezer soap, wherein the total soap is (a).
Saturated fatty acid soaps selected from the group consisting of myristic acid soaps, palmitic acid soaps, stearic acid soaps and mixtures thereof in an amount of about 75 to about 100% by weight of total fatty acid soaps; and (b) oleic acid soaps and lauric acid soaps. and _{C 8, C 10, C 18} : comprise from 0% to about 25% other soap selected from the group consisting of minor fatty acid soaps and mixtures thereof selected from the group consisting of _2; the soap is sodium soap and potassium soap (Na / K); and the Na / K soap is about 90/10 to about 75 /
And a percentage of 25, the amount of oleic acid soap is 0 to about 10% by weight of solids; and the laurate soap is 0 to about 10% by weight of solids; and the minor (C ₈ , C ₁₀ , C _{18: 2} ) The amount of soap is 0 to about 5 of the solid matter.
(II) about 5% to about 30% by weight of the solids of a foaming synthetic surfactant; (III) about 5% to about 30% of non-reducing sugars; and (IV) the solids. Reduced bathtub ring comprising about 15 to about 30% by weight of water and said total soap and said foaming synthetic surfactant having a ratio of about 5: 1 to about 1: 1. Foaming personal cleansing freezer soap bar with a foam.