Glycolic acid CAS 79-14-1

Glycolic acid is the fruit acid with the tiniest molecular weight, which has an exceptional fondness for the skin and also can pass through deep into the skin to attain a substantial moisturizing effect. Glycolic acid can accelerate the dropping old keratinocytes, eliminate collected keratin, enhance the price of epithelial cell metabolic process, promote skin renewal, boost excessive keratinization, harsh monotony, dark places as well as post-inflammatory coloring or irregularity, and make the skin smooth as well as bright. At the same time, glycolic acid can make the keratinized plugs around the pores simple to diminish, and unblock the hair roots tubes, efficiently avoid the pores from being blocked, and after that boost the symptoms of acne as well as large pores.

In boosting aging skin, glycolic acid can boost the spreading and also reformation of hyaluronic acid, acidic mucopolysaccharides, collagen as well as flexible fibers in the dermis, making the skin firm as well as flexible, and significantly reducing great lines as well as wrinkles. At the same time, the increase of hyaluronic acid can boost the skin’s very own water retention capability, which can solve the problem of dry skin.

Therefore, currently on the market, glycolic acid is often used in skin care and skin resurfacing products to achieve moisturizing, moisturizing, and promoting epidermal renewal effects, and can effectively solve problems such as skin aging, wrinkles, dark spots, and acne in a short period of time. However, due to its small molecular weight, glycolic acid is easier to directly penetrate into the deeper layers of the skin and even the dermis, and then directly affects the metabolism of basal cells, so it often produces tingling and burning sensations when using it. And the higher the amount of glycolic acid added, the greater the corresponding irritation and the more serious the concurrent inflammation.

In addition, glycolic acid can also be used in organic synthesis, such as the preparation of 1,4-dioxane-2,5-hexanedione, which mainly solves the problem of preparing 1,4-dioxane-2,5-hexanedione in the prior art The technical problem of the content of acid substances in diketone is more, the present invention comprises the following steps: (1) polycondensation: polycondensation of glycolic acid is carried out to obtain glycolic acid oligomer; (2) solution depolymerization, in After step (1), at least one solvent is added into the reaction system, so that the glycolic acid oligomer and the solvent form a homogeneous phase, the reaction temperature of the system is increased to 230-290 ° C, the vacuum degree is increased to 0.1-5KPa, and the stirring speed is increased. At 30-250 rpm, depolymerization of glycolic acid oligomers occurs, and the target crude product is distilled off under reduced pressure. Acid content in the industrial production of 1,4-dioxane-2,5-hexanedione. Or used for preparing an aluminum alloy film reagent, the raw materials and parts by weight of the film reagent are: 25-45 parts of succinic acid, 8-20 parts of sodium molybdate, 10-30 parts of sodium nitrate, and 10 parts of sodium fluoride. -50 parts, glycolic acid 3-33 parts, glycolic acid 7-20 parts, oxalic acid 10-15 parts, water 30-50 parts. The aluminum alloy coating agent provided by the present invention is a phosphorus-free coating agent, and the phosphorus-free coating agent does not pollute the environment when used, and the generated film is not easy to peel off.

Glycolic acid can also be used to prepare a ground anti-skid preparation. Weigh sodium chloride and deionized water according to weight parts, mix and stir to obtain A material; take limestone according to weight parts and pulverize it to 200 mesh, and then add modified Mix the sepiolite evenly to obtain material B; add surfactant, then add glycolic acid, acetic acid, gluconic acid, 2-hydroxypropionic acid, propylene glycol, dimethylolpropionic acid and sodium tripolyphosphate, and stir to obtain material C ; Add material B to material C to obtain material D; stir and add methyl hydroxy silicone oil and sodium lauryl sulfate to material D, and stir to obtain. The preparation process of the ground anti-slip preparation of the invention, the prepared ground anti-slip preparation can significantly improve the friction coefficient of the floor tiles in both dry and wet states, without affecting the color and brightness of the floor tiles, and the anti-slip effect can be maintained for a long time.