Background technology
Present market, most of facial cleaning cream class skin cleaner products are fatty acid soaps classes, have inexpensive, the spatter property height, characteristics such as it is fast wash by water, but they belong to the flushing type product, generally pH value has certain stimulation to skin between 9~11.Development along with modern chemistry product synthetic technology; how synthetic very gentle surfactant is born; as: alkyl ethoxylated succinum sulfonic acid type surfactant; musculamine amide acid type surfactant; taurine type surfactant; fatty acyl lactate, phosphate ester salt type surfactant; alkyl polyglucoside, amphoteric imidazoline, cocos nucifera oil both sexes acetate type surfactant or the like; they are than soap base system gentleness; but foamy abundant fine and smooth degree is poor, and the facial cleaning cream great majority made from them are still or low alveolitoids.Because most gentle surfactants can reduce the zest of soap, increase foamy elasticity, therefore most of producers generally all use fatty acid soaps class and other surfactant compounds, so not only foam but also gentleness can be arranged, and can provide desirable skin soft and moist and smooth feeling to consumer simultaneously.But, reach this effect, it is not enough only adding the mild surfactant.Because Wen He surfactant also can be sloughed oils and fats necessary in the epidermis again; these surfactants can pass the horny layer of epidermis thin film; and destroyed the integrity of film by degreasing; make skin lose the function of barrier and reservation moisture; cause the undue volatilization of moisture in the epidermis; this destruction to skin and hair protecting film causes pachylosis, and therefore the eyes sensory stimuli will add some and compose the fat agent in this facial cleaning cream system.
The adding of composing the fat agent is generally the oiliness raw material, add that general saponification degree is between 70%~80% in the saponification system, there is not saponified fatty acid to exist in water and the fatty acid soaps surfactant with free form, system stability is bad like this, particularly high-temperature stability is poorer, phenomenons such as mouth of pipe water outlet, thinning, deliquescing, layering, variable color can occur.At present, the product of facial cleaning cream cleaning class flows for 40 ℃ at high temperature, goods become aqueous solution in the time of 48 ℃, in 0 ℃ of hardening of low temperature, and after recovering room temperature, mastic is thick, fineless and smooth, state when goods can not return to former room temperature behind 40 ℃ of high temperature, consumer will think that product is rotten, and is different with original quality.And some patents are the stability of improving under low temperature and the high temperature, and add specific higher fatty acids soap class and condensation Semen Ricini alcohol polyglycereol (seeing TOHKEMY 2002-68961 communique); The hair conditioning shampoo compositions No. 5360581, United States Patent (USP) (see Japanese kokai publication hei 05-255049 communique, etc.) of long-chain fatty acid that contains the carbon number 18~36 of 0.5~20 weight %; Contain the solid injection molding compositions (seeing international application W092/19712) of mountain Yu acid soap 3~15 weight % etc.But, more than these systems recover room temperatures through high temperature (general 48 ℃) back, mastic still can chap.
In the face of global climate heats up, especially in summer, the temperature in the city that has reaches 40 ℃~42 ℃, and continuous two weeks, and some small shops, little shop are placed on product under the sunlight direct irradiation, the product external temperature reaches about 45 ℃~50 ℃, the temperature of cement plate upper ground surface more reaches 60 ℃~65 ℃ height out of doors, for this reason, how when guaranteeing that facial cleaning cream each side scourability requires, can improve the stability of product in wider temperature range again, guarantee that the quality of product becomes the important topic of present research.
Summary of the invention
For addressing the above problem, the purpose of this invention is to provide a kind of skin cleaning type composition, it has stability in wider temperature range, and lather quickness is fast simultaneously, gentleness, easily flushing.
The object of the present invention is achieved like this: a kind of skin cleaning type composition, it is characterized in that, calculate by mass percentage, prescription comprises following component: fatty acid and salt 15~50% thereof, consisting of of fatty acid wherein: the fatty acid of carbon number 16~18 accounts for 20~75% of fatty acid oeverall quality, carbon number below 15 fatty acid and the mass ratio of the fatty acid of carbon number more than 16 be 15: 90~42: 50; Polymer viscosifier 0.1~5%; Nertralizer 0.01~15%; Alcohols 2~35%; Surplus is a water.
In described fatty acid and the salt thereof, fatty acid is the fatty acid of carbon number 8~18, and the pairing cation that constitutes soap is alkali metal, basic amino acid or organic amine.
Described thickening agent is the organic water-soluble polymer.
Described thickening agent is an acrylate copolymer, acrylic acid/sodium acrylate polymer, acrylate copolymer, acrylate/C
10-30Alkyl acrylate copolymer, acrylic acid/C
10-30The alkyl acrylate copolymer emulsifying agent, acrylic acid/acrylonitrile copolymer, acrylate/behenyl alcohol polyoxyethylene (25) ether metacrylic acid ester, acrylate/Brij-721 (20) methacrylate copolymer, acrylate/aminoacrylic acid ester copolymer, acrylic copolymer/white mineral oil/tridecyl polyoxypropylene (1) polyoxyethylene (6) polyethers, sodium acrylate copolymer/soybean oil/tridecyl polyoxypropylene (1) polyoxyethylene (6) polyethers, the derivant of acrylamide, alkene/alkylene oxide polymer.
Described nertralizer is the mixing of inorganic base nertralizer and organic amine nertralizer.
Described organic amine nertralizer is PEG-15 coco group amine, four hydroxypropyls basic amine of diamidogen, diisopropanolamine (DIPA) and diethyl or stearamide propyl dimethylamine.
Product of the present invention has foaming soon, foam is fine and smooth abundant, bath is fast, to characteristics such as skin gentlenesses, can give the smooth and moisture feeling of skin after the cleaning, and (-15 ℃~48 ℃) stability is fine in wider temperature range, do not flow for 40 ℃ at high temperature, 48 ℃ not stratified, in 0 ℃ of not hardening of low temperature, its storage, aspect the shelf life performance excellent.
The specific embodiment
The present invention is a kind of skin cleaning type composition, calculate prescription by mass percentage and comprise following component: fatty acid and salt 15~50% thereof, consisting of of fatty acid wherein: the fatty acid of carbon number 16~18 accounts for 20~75% of fatty acid oeverall quality, carbon number below 15 fatty acid and the mass ratio of the fatty acid of carbon number more than 16 be 15: 90~42: 50; Polymer viscosifier 0.1~5%; Nertralizer 0.01~15%; Alcohols 2~35%; Surplus is a water.
The present invention is in the system of fatty acid and salt formation thereof, use the fatty acid of carbon number 16~18 with special ratios, and make carbon number below 15 fatty acid and the ratio of the fatty acid quality of carbon number more than 16 in specific scope, add polymer and nertralizer dual in and thickening, just can make and obtain best stability in the soap base system.
Composition of skin cleanser of the present invention contains fatty acid and salt thereof, and the fatty acid that constitutes this fatty acid and salt thereof uses the fatty acid of carbon number 8-18.The pairing cation that constitutes soap can be alkali metal such as sodium, potassium, basic amino acid, organic amine etc., and wherein preferred as alkali salt further is preferably alkali metal potassium salt.
Selecting thickening agent is the organic synthesis water-soluble polymer: acrylate copolymer, acrylic acid/sodium acrylate polymer, acrylate copolymer, acrylate/C
10-30Alkyl acrylate copolymer, acrylic acid/C
10-30The alkyl acrylate copolymer emulsifying agent, acrylic acid/acrylonitrile copolymer, acrylate/behenyl alcohol polyoxyethylene (25) ether metacrylic acid ester, acrylate/Brij-721 (20) methacrylate copolymer, acrylate/aminoacrylic acid ester copolymer, acrylic copolymer/white mineral oil/tridecyl polyoxypropylene (1) polyoxyethylene (6) polyethers, sodium acrylate copolymer/soybean oil/tridecyl polyoxypropylene (1) polyoxyethylene (6) polyethers, the derivant of acrylamide (acrylamide copolymer compound, acrylamide/sodium acrylate copolymer), alkene/alkylene oxide polymer and other base polymers, as acid-thickened dose of Sal care SC92, Sal care SC 95, Sal care SC 96 series, wherein preferred acrylate copolymer, more preferably acrylate/C
10-30Alkyl acrylate copolymer and acrylate copolymer.
Nertralizer is the mixing of inorganic base nertralizer and oil-soluble amine nertralizer, and wherein inorganic base nertralizer content accounts for 1~10% in total the composition, and part oil-soluble amine nertralizer content accounts for 0.01~5%.Select the organic amine nertralizer, as the basic amine of PEG-15 coco group amine, four hydroxypropyls diamidogen, diisopropanolamine (DIPA) and diethyl, stearamide propyl dimethylamine etc., being preferably PEG-15 coco group amine and stearamide propyl dimethylamine. main cause is in the acroleic acid polymerization objects system is arranged, if partly neutralize with oil-soluble amine, can obtain best stability with water-soluble inorganic alkali neutralization and part.Double-type neutralization be created in the water and oil in all soluble salt, dissolved in water by the neutral that part of acrylic resin molecule of inorganic base, by the neutral that part of oil phase that then dissolves in of organic amine, between oil phase and water, play function served as bridge, formed chemistry and all splendid system of physical stability.Wherein potassium hydroxide and PEG-15 coco group amine (Ethomeen C-15) and potassium hydroxide and stearamide propyl dimethylamine are the dual neutral nertralizers of a pair of suitable use, discover that these two kinds of nertralizers compose the fat effect in addition.And the degree of neutralization of fatty acid is preferably 55~100%, and considers foaming characteristic, foam volume what, aspects such as foamy height, fatty acid degree of neutralization more preferably 60~90%, more preferably 68~85%, fatty acid and salt thereof can use more than one respectively, and its content is accounting for 15~50% in total the composition, be preferably 20~35%, more preferably 25~35%, when content less than 15% the time, foaming characteristic and alveolar substance are poor, and when content surpassed 50%, the skin after the cleaning can produce tight sense.
In the present invention, constitute the consisting of of fatty acid of above-mentioned fatty acid and salt thereof: the fatty acid of carbon number 16~18 account for fatty acid total form 20~75%, be preferably 20~70%.In addition, in the present invention, constitute the consisting of of fatty acid of fatty acid and salt thereof: carbon number below 15 fatty acid and the mass ratio of the fatty acid of carbon number more than 16 be 15: 90~42: 50, be preferably 25:75~45:50, the ratio of the fatty acid of carbon number below 15 was less than 20.80 o'clock, bubble will be abundant inadequately, and when surpassing 50:50, the skin after the cleaning has tight sense.The fatty acid of carbon number below 15 can be preferably lauric acid and myristic acid.And the fatty acid of carbon number more than 16 also comprises the fatty acid that fatty acid and salt thereof by above-mentioned carbon number 16~18 constitute, and Palmic acid is wherein arranged, stearic acid, and isostearic acid, oleic acid etc. are preferably Palmic acid and stearic acid.
In composition of skin cleanser of the present invention, also contain various alcohols, as propylene glycol, 1,3 butanediols, glycerol, ethylene glycol, ethanol, dipropylene glycol, the isoamyl glycol, Polyethylene Glycol (mean molecule quantity is below 2000), polypropylene glycol (mean molecule quantity is below 1500), diethylene glycol monoethyl ether, polyglycereol, sorbitol, maltose alcohol, trehalose, xylitol etc., glycerol and 1 more preferably, 3 butanediols, these glycolss can use one or more, consider foaming characteristic, tolerance to cold and to the dissolubility of fatty acid and salt thereof, then the weight fraction of alcohols is preferred 2~35 parts, more preferably 10~25 parts.
In the composition of skin cleanser of the present invention, except that mentioned component, also can contain other used in cleanser compositions composition, as antiseptic, chelating agen, salt, pearling agent, spice, oiliness composition, other surfactant, freshener, UV absorbent, antioxidant and plant extract or the like, do not do detailed description at this.
Composition of skin cleanser of the present invention can be by making each composition mixing saponification, can be made into forms such as aqueous, cream shape, paste or solid, shaped, consider from the serviceability aspect, be preferably cream shape and paste, and go for cosmetics detergent, facial cleansing agent etc.
Provide the following example and further be described in more detail the present invention rather than limitation of the present invention.
Embodiment 1~5, comparative example 6~8:
Make the composition of skin cleanser of forming shown in the table 1, the experienced expert who coats cosmetics cleans their face with the composition of skin cleanser that obtains like this, and according to following standard, estimate its washing performance, foaming characteristic, washability, zest, wash back moist feeling and ageing stability from sensation, the results are shown in Table 1, and the degree of neutralization of fatty acid is 78% of fatty acid total amount in the table 1.
Evaluation methodology:
(1) washing performance, foaming characteristic, washability, zest, wash the back moist feeling.
◎: very good
Zero: good
△: in
*: poor
By 8 experts with the test that washes one's face of each compositions, the moist feeling (degree of drying) to washing performance (clean feel), foaming characteristic (blistered easy degree and foam number), washability (bubble easy-clear and stick-slip sense reduce), zest (minimizing of tight sense and harsh feeling), after washing.
(2) ageing stability
Each compositions was left standstill one month under 0 ℃, 40 ℃ and 48 ℃, and its state that detects by an unaided eye is then estimated according to following ageing stability criterion.
◎: no change
Zero: slight variations is only arranged, no problem in the use
△: some dirts or agglutinator have occurred
*: separate or agglutinator arranged
Table 1
Embodiment 9 (cleansing cream)
Make the cleansing cream of forming as follows by common method.Fatty acid and salt content thereof are 34.43wt%, in fatty acid total amount, the ratio of the fatty acid of carbon number 16~18 is 56.67wt%, the fatty acid of carbon number below 15: the mass ratio of the fatty acid of carbon number more than 16 is 64.7, and the degree of neutralization of fatty acid is 78% of a fatty acid total amount, acrylate copolymer content 0.9wt%, nertralizer content 6.2wt%.
Embodiment 10 (cleansing cream)
Make the cleansing cream of forming as follows by common method.Fatty acid and salt content thereof are 36.2wt%, in fatty acid total amount, the ratio of the fatty acid of carbon number 16~18 is 56.3wt%, the fatty acid of carbon number below 15: the mass ratio of the fatty acid of carbon number more than 16 is 77.8, and the degree of neutralization of fatty acid is 75% of a fatty acid total amount, acrylate copolymer content 0.9wt%, nertralizer (oiliness amine) content 0.1wt%.
Arbitrary example in the composition of skin cleanser that is obtained by embodiment 9~10 all is washing performance, foaming characteristic, washability, mildness, moist feeling and the good compositions of ageing stability after washing.