Cosmetics is the most widely used field of Sodium Pyrrolidone Carboxylate, which can be used in cosmetic lotions, powders, skin care moisturizers, hair conditioners and hair fixers. Skin care cosmetics are aimed at preventing rough skin and keeping skin delicate. Recently, it has been noticed that the moisturizing effect is very important, and the acquisition of cosmetics with high moisturizing effect has been attracting attention. When a water-in-oil emulsified cosmetic is applied to the skin, an oily film that is difficult to evaporate water is formed, so that the skin is kept in an excellent moisturizing state.
However, conventional emulsifiers used in cosmetic products only form simple water-in-oil emulsions. When the water content is high, the emulsions become unstable. Therefore, from the viewpoint of storage stability, the water content must be low and the oil content is relatively large. , such a lotion will have a sticky, unpleasant feeling. If Sodium Pyrrolidone Carboxylate is added to the emulsion, a new type of water-in-oil cosmetic emulsion with high water content, oily but not sticky, and good storage stability can be obtained.
One formulation of this emulsion is as follows: ( 1 ) 2 parts stearic acid, ( 2 ) 4 parts cetyl alcohol, ( 3 ) 8 parts liquid paraffin, ( 4 ) 2 parts polyoxyethylene stearate, ( 5 ) ) 1 part of triethanolamine, (6) 3 parts of sodium pyroglutamate, (7) appropriate amount of spices and preservatives, (8) 81.5 parts of water. In the homogeneous mixed solution consisting of (1)-(4), the mixed solution consisting of (5)-(8) which had been heated to 20°C was slowly added, and emulsified to obtain a water-in-oil emulsified cosmetic. The water content can be adjusted by changing the content of sodium pyroglutamate.
In powder cosmetics, Sodium Pyrrolidone Carboxylate can replace mineral oil, animal oil, synthetic oil and other oils and fats, as well as glycerin, propylene glycol water-soluble polymer compound moisturizing agent, and the effect is better. The formula of a cosmetic powder that can be stored for a long time and has good dispersibility in water is as follows: (A) 8% phospholipid phthaloline choline (weight ratio), 2% cholesterol, 4% propylene glycol; (B) 65% sodium pyroglutamate ; (C) dextrin 20%. Heat and mix ( A ) ingredients, slowly add 3 times the amount of hot water to form an oil-in-water emulsion, add ( B ) ingredients to the emulsion, mix carefully, add 3 times water dilution of ( C ) ingredients, spray Dry to obtain a self-emulsifying powder cosmetic.
The soap made by adding colorants, spices and other ingredients to ordinary soap blanks will cause changes in the weight and size of the soap due to the slow evaporation of water. The surface of the soap is prone to cracks, and the commodity value decreases. After the soap is soaked in water, it must undergo repeated drying processes, and the surface of the soap will crack, which not only affects the appearance, but also sometimes cracks into blocks. If 0.5-15% sodium pyroglutamate is added to the soap base, the best addition amount is about 5%, and the preservation of the soap is obviously improved. After use, due to the effect of Sodium Pyrrolidone Carboxylate on the skin, there is a A moist feeling.
The manufacturing process is as follows: 5 parts of Sodium Pyrrolidone Carboxylate are added to 10 parts of soap stock, mixed thoroughly and then kneaded in a small soap stock rolling machine, and the obtained flake soap stock mixture is extruded with an extruder, The temperature of the casing and the nozzle of the machine are kept at the same temperature, and the soap bar is extruded into a bar, and then the soap bar obtained is made into a finished product in a molding machine. Compared with the commercial cosmetic soap, the soap has the advantages of high friction solubility, good formability, no cracking after repeated washing and drying, and good skin feeling after use. In other transparent soaps and cosmetic soaps, sodium pyroglutamate can also be added to improve the quality.
Adding hygroscopic Sodium Pyrrolidone Carboxylate to cakes, toffee and other products can greatly reduce the loss of water and prolong the shelf life of the products. In the pastry and chocolate toffee, two ingredients each, one of which was added with 5% sodium pyroglutamate, other production conditions were the same, after making the finished product, they were exposed to the air for 9 days, and sodium pyroglutamate was added. The surface of the pastry is still smooth and the appearance is good, while there are several deep cracks in the center of the control sample; the toffee added with sodium pyroglutamate is very soft and smooth, while the control toffee is hard and the surface is gradually powdery .
The soft capsule matrix (such as gelatin) commonly used in medicine and food is water-soluble. If the filler is an aqueous solution or suspension, it is difficult to form a soft capsule. Emulsification method, or use the method of strengthening the gelatin film itself. However, the addition of grease is not suitable for all occasions. Improper use of the hardener for strengthening the gelatin film will cause the problem of insolubility. If Sodium Pyrrolidone is added to the water-based component Carboxylate (or used in combination with added sugar alcohols, sodium lactate, etc.) humectant to form a water-in-oil emulsion, making it difficult for water to move to the base gelatin film, preventing the gelatin film from directly contacting the water-based capsule filler. Overcoming the above deficiencies, it is a very ideal soft capsule product.
A beef juice capsule is prepared as follows: in 50 parts beef juice (40% water content), mix 50 parts D-sorbitol, 50 parts sodium lactate, 50 parts sodium pyroglutamate, 30 parts L-lysine or Proline, to obtain the mixture, and using a rotary soft capsule forming machine, the mixture was formed into spherical capsules of 25 mm with a film made of gelatin and glycerin (total weight 10.8 g, content weight 10 g, film thickness 0 . sm m ), dry at 20 ℃ until the moisture content of the film reaches 10%. The beef juice capsules were stored in a constant temperature and humidity tank at 40 ℃ and a humidity of 60% for 120 days. The gelatin films of all the capsules were not ruptured. The capsules were then put into hot water at 80 ℃. It was completely dissolved in 30 seconds, and a good seasoning liquid with beef flavor was obtained.
The addition of Sodium Pyrrolidone Carboxylate to medicinal ointments and creams can improve the stability and skin affinity; the same as the preparation method of food soft capsules, the water-based medicinal soft capsules made of sodium pyroglutamate are added to improve the stability of the product. The absorption and utilization rate of drugs, and can provide water-based drug components without mixing oil; sodium pyroglutamate can also be used as a stabilizer for solid-phase immune reagents and liquid drugs. A kind of elimination gram, 7 grams of 1.3-butanediol, 10 grams of butanone, 30 grams of isobutanol, 5 grams of 2% sodium pyroglutamate solution, add 2 grams of mefenamic acid after mixing, and then dilute with ethanol to l 00 ml.
Sodium Pyrrolidone Carboxylate can endow fibers with excellent softness, and will not cause any discoloration of dyeing during processing. It can be used stably with fluorescent dyes, and it is easily dissolved or dispersed in water to form a stable and uniform aqueous system. Fiber softeners are suitable. When using it, it is formulated into a 5-10% aqueous solution, dispersion or emulsion (you can add an appropriate emulsifier) to impregnate silk or woven cloth. Treated with dip dyeing, spray dyeing, etc. All fibers such as wool, cotton, rayon, nylon, polyester, etc. can be softened.
An example of the treatment is as follows: in 1 liter of 2% Sodium Pyrrolidone Carboxylate aqueous solution, the pre-desizing treated scrim (cotton) was dipped at 40°C for 30 minutes, then dehydrated and dried, and the treated fabric had excellent Newmery characteristics (frictional properties of wool fabrics), softness and elasticity, when used as clothing, have a wet hand and excellent thermal retention.
Sodium pyroglutamate may be contained in the aqueous ink composition for inkjet recording which does not clog the nozzles and has high printing quality. Inkjet recording basically records text and graphics by ejecting ink droplets from tiny inkjet nozzles (usually tens to hundreds of microns in diameter). The ink used for inkjet recording requires no clogging of inkjet nozzles, good printing dryness, no seepage, and appropriate electrical conductivity. Since Sodium Pyrrolidone Carboxylate, which has the effect of regulating electrical conductivity, has extremely high water absorption, the ink composed of 2-10% sodium pyroglutamate and a certain amount of polyols can meet the above requirements in the water-soluble dye ink formulation. Of course, antifungal agents, PH regulators, surface tension regulators (surfactants), ultraviolet absorbers, antioxidants, etc. can also be added to the ink formulation.
An ink formulation is as follows: direct black 19, 1.5% (weight ratio), sodium pyroglutamate 2.5%, polyethylene glycol (average molecular weight 300) 5%, water 90.95%, 1.2-benzene And isosaline-3-one 0.05%. After mixing these ingredients, it was filtered twice with a filter to make ink. Tests have proved that this ink is a water-based ink that does not block ink jet nozzles and has excellent printing quality.
The pipe cleaner that has a cleaning effect on sewers contains the reaction product of Sodium Pyrrolidone Carboxylate with sodium hydroxide and metal aluminum. It can also contain certain inorganic salts such as potassium nitrate, sodium nitrate and the like. They chemically react with aluminum in the presence of water, releasing heat. This heat, along with sodium pyroglutamate and free sodium hydroxide, has a synergistic effect on increasing the solubility of organics and therefore has specific cleaning benefits.