China Propylene glycol, Dipropylene glycol, Adipic acid Suppliers & Manufacturers & Factory

URL: https://www.tsrchem.com/polyvinylpyrrolidone-pvp-an-adhesive-emulsifier-stabilizer-and-film-forming-agent.html Functions of polyvinylpyrrolidone Polyvinylpyrrolidone (PVP) is a versatile ingredient that is used in cosmetics and beauty products as a binder, emulsion stabiliser, suspending agent and hair styling, mainly in mascara, eyeliner, conditioners, hairsprays, shampoos and other hair care products. It prevents the separation of water and oil in emulsions and binds the ingredients in compressed powders together. Polyvinylpyrrolidone also forms a dry film on the surface of the skin, nails and hair. When used as an ingredient in hair care products, it prevents hair from absorbing moisture to set the hair. It is also used in contact lens care solutions and as a thickening agent in whitening toothpastes and gels for whitening teeth. Polyvinylpyrrolidone can be used as a clarifying agent for beer, wine and vinegar and as a preservative coating for citrus fruits. ...

URL: https://www.tsrchem.com/do-you-know-these-issues-related-to-polyether-polyols.html The optimum polyol to use when building a polyurethane elastomer might be the difference between a high-quality product and one with poor performance. Making the right material choice requires a thorough grasp of the intrinsic qualities of each polyol chemistry as well as the essential attributes and environmental exposures for a certain application.Economic factors and the necessary performance features are part of the selection criteria. In this article, we will answer frequently asked questions about polyether polyol selection standards and hope to help you. What are key attributes of polyurethanes based on polyether polyols? Even at higher temperatures, polyurethanes based on polyether have outstanding hydrolysis resistance. For applications requiring submersion in water or strong property retention in warm, humid situations, they are the material of choice.Low glass tra...

URL: https://www.tsrchem.com/properties-and-applications-of-polyether-foam.html Characteristics and Properties of Polyether Foam Some of the most desirable attributes of polyether foam include: Cushioning — Polyether foam provides good cushioning thanks to its compressibility. Compressibility — It has the capacity to be compressed and then restore itself to its initial shape. Insulation — Polyether has excellent insulation qualities and may stop heat from being lost or gained. Electrical Properties — Electrical insulation is generally quite good in polyurethanes. Low Moisture Vapor Transmission Rate — Polyether exhibits a low water vapor permeability. Flexibility — Polyether is able to bend substantially without breaking and can be easily modified. Tear Resistance — Polyether possesses a high resistance to tearing as well as high tensile properties. Light-weight — The light-weight nature of polyether makes it ideal for a vas...

URL: https://www.tsrchem.com/how-to-protect-and-storage-tetrahydrofuran.html Tetrahydrofuran is a dangerous chemical, which is reflected in its health hazards, explosive hazards, and dangerous characteristics. Tetrahydrofuran has the effects of anesthesia and stimulation on the human body after inhalation; it is easy to cause upper respiratory tract stimulation and may also inhibit the central nerve, causing nausea, dizziness, headache, and other symptoms. If the THF is too much, it may also cause liver and kidney function damage. If the skin and tetrahydrofuran contact for a long time, it is easy to skim the effect, dermatitis. A 20% aqueous solution of tetrahydrofuran used in human eyes will seriously damage the cornea, and long-term contact will also affect fertility and even cause a loss of sexual function. Tetrahydrofuran is extremely flammable and irritating, and its vapor and air can form an explosive mixture, which is easy to cause combustion in high heat, an...

URL: https://www.tsrchem.com/what-is-polyvinylpyrrolidone-used-for.html The water-soluble polymer polyvinylpyrrolidone (PVP), also known as polyvidone or povidone, is created from the monomer N-vinylpyrrolidone. PVP can be chosen based on the desired application qualities and is offered in a variety of molecular weights and associated viscosities. Medical Uses Many medicinal tablets include polyvinylpyrrolidone as a binder; when consumed orally, it just passes through the body. Povidone-iodine, a compound formed when PVP and iodine are combined, is a disinfectant. This compound is utilized in a number of goods, including surgical scrubs, liquid soaps, pessaries, solutions, and ointments. It is offered for sale under several trade names, including pyodine and betadine. It is employed in pleurodesis, which involves fusing the pleura due to persistent pleural effusions. Povidone iodine is just as efficient and secure for this usage as talc, and because it...

URL: https://www.tsrchem.com/what-are-the-types-of-polyol.html The polyurethane structure of polyols, which are reactive stocks containing at least two functional groups, is created when these groups combine with isocyanate (NCO) groups. Depending on where they are used, polyols can be divided into a number of distinct categories. The two classes of polyols include hydroxyl and amino-terminated groups.One of the two essential elements of polyurethane systems is polyol. At least two hydroxyl functional groups on polyol structures react with isocyanate groups to create polyurethane structures. Numerous industrial applications employ polyurethane, especially in the footwear, building, furniture, automotive, and heating and refrigeration industries.Polyols are the most significant isocyanate reaction partners. Polyethers and polyesters are the two main categories into which polio is divided. Polyether polyols make up 80–90% of the polyols now in use. Polyester Polyols Di...

URL: https://www.tsrchem.com/the-main-applications-of-polyether-polyol.html The manufacture of polyurethanes relies heavily on polyether polyols.In comparison to polyester-based polyurethanes, polyether-based polyurethanes have improved hydrolytic stability and superior resistance to weak acids and bases. Depending on how well the polyether products function, polyether polyurethane can be classified as soft foam polyether, stiff foam polyether, or elastomer with polyether. However, compared to polyurethanes based on polyester, polyether-based polyurethanes are less resistant to lubricants and fuels and more vulnerable to UV radiation.Glycol and organic oxide react to form polyether polyols. Ethylene oxide, propylene oxide, butylene oxide, and epichlorohydrin are the most commonly used organic oxides. Ethylene glycol, propylene glycol, water, glycerine, sorbitol, sucrose, and THME are the principal glycols used. The synthetic oil type with the highest sales volume at the mo...

URL: https://www.tsrchem.com/what-are-the-main-differences-between-polyester-and-polyether.html There are two primary types of polyurethane : polyester and polyether. Both are useful in a multitude of industrial applications. Polyester urethane and polyether urethane are elastomers, meaning that they possess elastic properties, and both offer unique performance properties. So what are the main differences between polyester and polyether? Heat Resistance Properties Up to 194°F (90°C), polyurethane elastomers can function continuously. If necessary, flame retardants may be used in the formulation. At high temperatures, polyether urethanes and polyesters both function well. However, polyesters are more heat-resistant and better able to tolerate high temperatures for longer. Polyethers are less prone to the development of dynamic heat. Rebound properties Some items must rebound, or give back, the energy they receive. Compared to polyester polyurethane, polye...

URL: https://www.tsrchem.com/effect-of-polyvinylpyrrolidone-pvp-k30-on-direct-dyeing.html Polyvinylpyrrolidone (PVP) is a water-soluble polymer with excellent solubility, biodegradability, physiological compatibility, low toxicity, high molecular surfactant properties and good compounding ability with other compounds and high stability to salts, acids and heat, and is now widely used in pharmaceuticals, daily chemicals, food processing and other fields, and will be more widely used as PVP synthesis methods are improved and prices fall. Depending on the average molecular weight, they are classified as PVP K15, PVP K30, PVP K60, PVP K90,etc. Water-soluble polymers interact with dyestuffs to change their dyeing properties and the properties of fibres, and can improve the solubility, dispersion and homogenisation of dyestuffs. It is therefore necessary to further study their effect on the dyeing properties of various types of dyestuffs, which is of practical value for the devel...

URL: https://www.tsrchem.com/new-process-polyvinylpyrrolidone-pvp-preparation-technology.html 1. Project Introduction Polyvinylpyrrolidone (PVP), (CAS 9003 39 8 ) is a series of polymer fine chemical products with excellent performance. Common POV's are:PVP K30 (polyvinylpyrrolidone k30) , PVP K60 (polyvinylpyrrolidone k60) , PVP K90 (polyvinylpyrrolidone k90). PVP is a moisturizer and antidote for cosmetics, which can effectively lift the irritation of cosmetics to the skin and help the skin to be soft and lubricated. For hair cosmetics, PVP has the functions of styling, hair care, increasing the shine and smoothness of hair, and is an indispensable raw material for styling hair creams, mousses and hair sprays. As an adhesive excipient, thickener, solubiliser, dispersant, stabiliser and film-forming agent in pharmaceuticals, it is internationally regarded as one of the most important new excipients for pharmaceutical synthesis. Povidone iodine (PVP-I), with PVP ...

URL： https://www.tsrchem.com/a-common-food-additive-xanthan-gum-s-wide-range-of-uses-in-food.html A polysaccharide with several commercial applications, including as a typical food ingredient, is xanthan gum . It works well as a stabilizer, emulsifier, and thickening agent to keep components from separating. It may be made from simple sugars by a fermentation process, and it gets its name from the Xanthomonas campestris type of bacterium that is employed. History The United States Department of Agriculture's Allene Rosalind Jeanes and her research team discovered xanthan gum, which CP Kelco commercialized under the brand name Kelzan in the early 1960s. With the E number E415 and CAS number 11138-66-2, it was authorized for use in foods in 1968 and is recognized as a safe food additive in the USA, Canada, European nations, and many other countries. The bacterium Xanthomonas campestris, which is utilized in the fermentation process, gives xanthan gum its name. ...

URL： https://www.tsrchem.com/the-formation-and-use-of-adipic-acid.html The chemical molecule with the formula (CH2)4(COOH)2 is known as adipic acid or hexanedioic acid. It is the most significant dicarboxylic acid from an industrial standpoint; every year, around 2.5 billion kilos of this white crystalline powder are manufactured, mostly as a precursor to the manufacture of nylon. Adipic acid is a synthetic food additive with the E355 designation. It is an uncommon occurrence in nature. Adipates are the name for adipic acid salts and esters. Preparation and reactivity KA oil, also known as ketone-alcohol oil, is a combination of cyclohexanone and cyclohexanol that is used to make adipic acid. Through a multistep process, KA oil is oxidized with nitric acid to produce adipic acid. Reactions Adipic acid has two acidic groups and is a dibasic acid. Their subsequent deprotonations had pKa values of 4.41 and 5.41. Adipic acid is suitable for intramolecular...

URL： https://www.tsrchem.com/thermoplastic-polyurethane-tpu-in-medical-applications.html Thermoplastic polyurethane (TPU) is a linear block polymer consisting of soft chain segments (long-chain oligomeric diols) and hard chain segments (diisocyanates and chain expanders). Due to the strong polarity of the hard chain segments, the microphase regions of the hard chain segments are formed by hydrogen bonding and distributed in the soft chain segment matrix to form a kind of physical crosslinking point, thus giving the elastomer the elastic recovery properties of vulcanised rubber. This structure makes the polyurethane biocompatible due to the difference in polarity between the soft and hard chain segments in its molecular structure. Thanks to its easy handling and excellent properties, TPU has been used in a wide range of medical and healthcare products, for example as a medical material for long-term and short-term implantation in the human body. The properties of TPUs depend ...

URL： https://www.tsrchem.com/overview-of-bio-based-polyether-polyols.html With dwindling petrochemical resources, the urgent need for environmental protection and the continued rise in the price of petrochemical products, the development of soybean oil, castor oil and palm oil-based polyether polyols has become a research hotspot. Soybean oil polyether polyol Compared with traditional polyether polyols, polyols prepared from soybean oil have a special structure with a long carbon chain and a large degree of branching. This structure determines the downstream products of soybean oil-based polyols to be more advantageous in terms of water resistance and low swelling, which can be immersed in water for a long time without deformation.In addition, as soy oil polyols are more functional, their glass transition temperature is higher than that of traditional petrochemical-based polyether polyols, and the reaction produces downstream products that are more cross-linked and mo...

URL： https://www.tsrchem.com/a-total-investment-of-us-100-million-46-700-tonnes-bdo-plant-proposed-in-shandong-province.html Recently, the proposed approval of Shandong Tianchen New Material Technology Co., Ltd. 80,500 tons/year fine chemicals project was announced on the relevant website. The project is being built in two phases with a total investment of US$100 million The first phase, with an investment of $44 million, is based on methanol, adipic acid and hydrogen as raw materials. The esterification process is used to produce dimethyl adipate by esterifying adipic acid with methanol and then producing 1,6-hexanediol by hydrogenation. New equipment such as an esterification tower, a distillation tower, a hydrogenation reactor and a condenser will be purchased to produce 15,200 tonnes/year of dimethyl adipate and 10,000 tonnes/year of 1,6-hexanediol. A new hydrogen production plant was installed in Phase I. Methanol and demineralised water are used as raw mat...

URL: https://www.tsrchem.com/china-mdi-exports-up-47-yoy-europe-middle-east-markets-stable.html According to the latest data released by China Customs, from January to February 2023, China's cumulative exports of polymeric MDI amounted to 207,700 tons, up 46.9% year-on-year. By country, from January to February, the U.S. remained the largest export destination for China's polymeric MDI (by export volume), with 47,338 tons of polymeric MDI exported to the U.S., up 21.5% year-on-year, and China's polymeric MDI exports to the U.S. accounted for 13.4% of total exports. It is worth mentioning that during the same period, China's exports of polymeric MDI to the Netherlands, Turkey and the Russian Federation grew more strongly year-on-year. China's exports of polymeric MDI to the Netherlands increased by 101% year-on-year, exports to Turkey increased by 329% year-on-year, and exports to the Russian Federation increased by 283% year-on-year. Some MDI plant ...

URL: https://www.tsrchem.com/basf-received-iscc-certification-for-two-production-sites-in-asia-involving-mdi-tdi-and-adipic-acid.html Following BASF Monomers' announcement of its ambitious sustainability roadmap in February 2023, two of its production sites in Asia have now received ISCC+ certification. These certifications underscore the division's commitment to helping its global customers achieve their sustainability goals. This is the business unit's first ISCC+ certification in the Asia Pacific region, demonstrating its ability to offer Biomass Balancing (BMB) and Chemical Cycling (ChemCycling®) products with the same level of product performance as those now supplied from Korea, with lower CO2 emissions. "As a bulk business at the heart of chemical production, we have a vast potential to be able to drive sustainable transformation for BASF and our various customer industries. These certifications demonstrate our deep commitment to driving sustainable g...

URL: https://www.tsrchem.com/bdo-industry-research-report-2023.html With the concentration of new production capacity, the trend of overcapacity is obvious. According to the specific analysis of the current BDO (1 4-Butanediol) production situation, the construction of BDO production units will be further accelerated in the next few years, and the increase in the number of enterprises will lead to a rapid increase in China's BDO production capacity in a short period of time, and there will even be overcapacity. The demand for downstream products further increases and new products become the key development direction The continuous development of downstream industries further increases the market demand for BDO PTMEG and PBT engineering plastics are the traditional application fields of BDO The upstream industries of BDO are raw material producers such as methanol and calcium carbide, and the downstream industries include textile and garment, biodegradable materials, bui...

URL: https://www.tsrchem.com/recycling-of-polyurethane-foam-mattresses-using-chemical-recovery.html Every year, Belgians discard one million mattresses that end up in landfills and incinerators. The EU wants to recycle and reuse at least 55% of household waste, including mattresses, by 2025, while Belgium has decided to start mandatory recycling gradually in 2021. In this context, we can better understand the interest of the research project carried out by polyurethane foam producer Recticel and Covestro over the last four years: in collaboration with KU Leuven, Ghent University and recycling partners, they have developed a process to recreate new polyurethane foam from old mattresses. This type of foam is used to "fill" most of the mattresses sold around the world, competing with polyether foam and latex. Their new technology has a double advantage over other existing recycling methods in that it allows for continuous recycling of all foams and eliminates the nee...

URL: https://www.tsrchem.com/recovery-process-how-to-get-high-purity-nmp.html N-Methylpyrrolidone (NMP) also called N-Methyl-2-pyrrolidone, cas 872-50-4, is a colorless transparent oily liquid with a slight odor of amine. Melting point -24.4 ℃, flash point 91 ℃, boiling point 203 ℃; miscible with water, alcohols, ethers, esters, ketones, halogenated hydrocarbons, aromatic hydrocarbons, low volatility, good thermal stability and chemical stability. It is widely used as extractant in the process of aromatic extraction, acetylene extraction, butadiene separation and desulfurization of synthesis gas, etc. It is also an important industrial solvent in the production of pesticides, engineering plastics, coatings, synthetic fibers, integrated circuits, etc. It can also be used as dispersant, dyeing agent and detergent, etc. Especially in the battery industry, in recent years, it has been used as a solvent in the production of the battery industry. Especially in the battery industr...

URL: https://www.tsrchem.com/5-applications-for-propylene-glycol.html Propylene glycol is appropriate for a variety of uses due to its miscibility with water and other solvents. We've discussed this substance in this article; read more about it. If not, let's get started with the five applications for propylene glycol . 1. Safe Antifreeze Propylene glycol has only recently been used in place of ethylene glycol in a new generation of antifreeze compositions. This shift occurred because propylene glycol was less hazardous than ethylene glycol, not because it performed better. When consumed, the very poisonous chemical ethylene glycol transforms into crystals of calcium oxalate. The accumulation of these crystals in the kidneys, lungs, and heart might result in irreversible harm. Many children and pets have inadvertently consumed ethylene glycol due to its distinct sweet taste and smell. Particularly dangerous situations have occurred when pe...

URL: https://www.tsrchem.com/is-it-safe-to-use-salicylic-acid-every-day.html SBeta-hydroxy acids( BHA) like salicylic acid( SA) aid in the natural exfoliation of the skin. Salicylic acid, which was actually derived from the bark of some plants, like white willow and wintergreen leaves, is currently produced most frequently in laboratories. The gentle yet effective exfoliating properties of this ingredient can help you achieve softer, smoother skin when used as part of your skin care regimen. How does salicylic acid work? Salicylic acid was first created in 1838 by an Italian apothecary by the name of Raffaele Piria, which is the beginning of the revelation. By releasing the "glue" that binds skin cells together, salicylic acid aids in skin exfoliation. This encourages the normal shedding of dead cells, which aids in the removal of rough or dull skin to reveal a tone that is youthful and healthy-looking.You’ll find salicylic acid in a variety of skincare pro...