Your Leading Kaimaoxing Cellulose (Shandong) Co.,Ltd. Supplier
The Kaimaoxing factory was established in 2007. The boss and two experienced technical experts who came out of state-owned enterprises began to explore and embarked on the road of cellulose production. The first stage, 2008, ushered in the spring of China's real estate. The government commercialized houses, which set off the first small wave of real estate in Chinese history. A steady stream. With the gradual increase in orders from the factory, the factory expanded its production capacity for the first time and added production lines. At this time, our customers were all domestic. Until 2016, we increased the orders of many traders, who continuously sold the goods of Kaimaoxing factory to all over the world. In order to adapt to the needs of domestic competition and keep in line with foreign situations, we have been expanding our scientific research personnel and technical personnel.
Why Choose Us?
High quality
Our products are manufactured or executed to very high standards, using the finest materials and manufacturing processes.
Rich experience
We are serving more than 2,000 customers, provide reasonable solutions for joint agent applications and other fields.
Demand and application
We have been committed to research more applications of products will expand more products to meet the different needs of customers.
Technology support
From the two technical personnel when the factory was first established to the current technical team of 22.
What is Hydroxypropyl Methyl Cellulose？
Hypromellose (INN), short for hydroxypropyl methylcellulose (HPMC), is a semisynthetic, inert, viscoelastic polymer used in eye drops, as well as an excipient and controlled-delivery component in oral medicaments, found in a variety of commercial products.
As a food additive, hypromellose is an emulsifier, thickening and suspending agent, and an alternative to animal gelatin. Its Codex Alimentarius code (E number) is E464.
Benefits of Hydroxypropyl Methyl Cellulose
Seamless finishes and plastering
One of the lesser-known benefits of HPMC lies in its ability to refine plastering and finishing processes. By maintaining consistency in mixtures, HPMC ensures smoother application, reduced cracking, and enhanced finish quality. This makes it an indispensable ally for architects and builders striving for excellence in every project.
01
Elevating drug delivery systems
In the pharmaceutical realm, HPMC plays a pivotal role in revolutionizing drug delivery systems. Its biocompatibility and controlled-release capabilities make it an ideal choice for manufacturing drug formulations. From tablets to capsules, HPMC acts as a stabilizing force, ensuring precise release rates and improved drug efficacy.
02
Encapsulation expertise
The encapsulation of pharmaceutical compounds requires precision and reliability. HPMC excels in this domain by providing a protective shell for active ingredients, safeguarding their potency and enhancing bioavailability. Pharmaceutical innovations owe a debt to the unassuming yet powerful role of HPMC in encapsulation technologies.
03
Culinary innovation unleashed
In the culinary world, HPMC powder serves as a silent champion, transforming the texture and stability of various food products. As a thickening and gelling agent, it contributes to the creation of delectable dishes, from creamy desserts to savory sauces. The versatility of HPMC allows chefs to experiment with textures and presentations, elevating the gastronomic experience for consumers.
04
Stability in food emulsions
Beyond its role in texture enhancement, HPMC proves instrumental in stabilizing food emulsions. Salad dressings, mayonnaise, and other emulsified products benefit from the cohesive properties of HPMC, ensuring a consistent and appealing appearance while prolonging shelf life.C
05
Types of Hydroxypropyl Methyl Cellulose
Low-viscosity HPMC: Which is characterized by its low molecular weight and high degree of substitution. This type of HPMC is often used as a thickening agent in aqueous solutions, such as shampoos and liquid soaps. It provides excellent water retention properties and enhances the stability of these products.
High-viscosity HPMC：Has a higher molecular weight and lower degree of substitution. It is commonly used as a film-forming agent in pharmaceutical tablets and capsules. High-viscosity HPMC forms a protective film around the medication, preventing it from being released too quickly in the body. This type of HPMC is also used in ophthalmic solutions to increase the contact time of the medication with the eye.
Delayed-release HPMC：This type is designed to release the active ingredient in a controlled manner, either by time or by pH. Delayed-release HPMC is commonly used in enteric-coated tablets, where the coating prevents the medication from being released in the stomach and instead allows it to dissolve in the intestines. This ensures that the medication is delivered to the targeted area of the body.
There are HPMC grades that are specifically designed for use in construction materials. These grades have excellent water retention properties and are used as thickeners in cement-based products, such as tile adhesives and grouts. HPMC improves the workability and adhesion of these materials, making them easier to apply and more durable.
Application of Hydroxypropyl Methyl Cellulose
Construction industry
HPMC is widely used in the construction industry as an adhesive, thickener and water retaining agent. When added to cement-based products such as mortar, stucco and concrete, HPMC powder improves workability by enhancing the adhesion and cohesion of the material. It also prevents the material from shrinking or cracking during the drying process. In addition, HPMC powder helps control the material’s setting time and enhances the water-holding capacity of the mixture. This increases the durability and quality of building materials.
Pharmaceutical industry
HPMC powder is widely used in the pharmaceutical industry as a binder, thickener and disintegrant. Often used in tablet and capsule formulations to improve drug quality. When added to pharmaceutical formulations, it increases the cohesion of the powder, making it easier to handle. It also enhances the solubility and bioavailability of drugs, making them more easily absorbed by the body. Additionally, HPMC powder controls the release of the drug so that it is released slowly over time.
Cosmetics industry
HPMC powder is an important ingredient in the cosmetics industry. It is used as a thickener, emulsifier and stabilizer in many cosmetic formulations, such as shampoos, lotions and creams. In shampoos, HPMC powder increases the viscosity and consistency of the product, making it easier to apply and distribute evenly. In lotions and creams, it increases the viscosity of the product and improves its texture, giving the skin a smooth, silky feel. In addition, HPMC powder helps stabilize emulsions in products, preventing oil and water from separating.
Food industry
HPMC powder is used as a thickener, emulsifier and gelling agent in the food industry. It is commonly used in processed foods such as sauces, dairy products and baked goods. When added to food formulations, it improves the texture and consistency of products, providing a smooth, creamy texture. It also enhances the stability of the product, allowing it to stay fresher for a longer period of time. Additionally, HPMC powder provides a vegetarian alternative to gelatin, enabling manufacturers to produce vegan and vegetarian products.
Textile industry
HPMC powder is used in the textile industry as a sizing agent for threads and fabrics. When applied to fabric, it adds strength, durability and stiffness to the material. It also prevents fabrics from shrinking or wrinkling during washing and drying. In addition, HPMC powder improves the adhesion of dyes and pigments, providing vibrant and long-lasting color.
Material of Hydroxypropyl Methyl Cellulose
Hydroxypropyl methyl cellulose is a semisynthetic polymer that is made from natural cellulose. It is commonly used as a thickener, emulsifier, and stabilizer in various industries. HPMC is derived from cellulose, which is extracted from plant fibers such as wood pulp, cotton, or hemp. The cellulose is then chemically modified by adding hydroxypropyl and methyl groups to improve its solubility, stability, and other properties.
According to stated proportions and weights, putting a mixed solvent of toluene and isopropanol as well as alkali into a reaction kettle respectively, and stirring in a cold state so as to dissolve the alkali uniformly;
Adding a preset amount of purified cotton, and carrying out stirring and heating for alkalization reaction;
After the alkalization reaction, storing alkalized cellulose molten slurry into the reaction kettle, carrying out vacuumizing, adding a stated amount of chloromethane and epoxypropane, and carrying stirring and heating for etherification reaction;
After the etherification reaction, pressing etherified molten slurry into a recycling kettle by using nitrogen, and adding a proportional amount of acetic acid for acid-base neutralization;
Carrying out centrifugating, drying, crushing, bagging and the like to finish production of the hydroxypropyl methyl cellulose.
How to Maintain Hydroxypropyl Methyl Cellulose
HPMC vs Methylcellulose: What Are the Differences?
Molecular weight
One of the primary differences between HPMC and methylcellulose is their molecular weight. HPMC has a higher molecular weight than methylcellulose, which means it can form more extensive and stronger gels. Therefore, HPMC is often used in applications where high viscosity and gel strength are required, such as in pharmaceutical tablet coatings and sustained-release formulations.
Methylcellulose has a lower molecular weight, which makes it more soluble and dispersible in water. As a result, it is often used as a thickening agent in food and personal care products, such as shampoos and lotions.
Degree of substitution
Another significant difference between HPMC and methylcellulose is their degree of substitution (DS). The DS refers to the number of hydroxyl groups on the cellulose chain that have been substituted with a particular functional group, such as methyl or hydroxypropyl. The DS affects the water solubility and gelation properties of the cellulose derivative.
HPMC typically has a higher DS than methylcellulose, which results in higher water solubility and better gelation properties. This makes HPMC a more suitable option for applications that require strong gels, such as in the production of sustained-release drug formulations. Methylcellulose, on the other hand, has a lower DS, which makes it more water-soluble and less prone to gelation. So, it’s a more suitable option for applications that require a thickening agent, such as in the production of sauces, soups, and salad dressings.
Applications
While both HPMC and methylcellulose have similar properties, they are often used for different applications. HPMC is widely used in the pharmaceutical industry as a tablet coating material, binder, and sustained-release agent. It is also used in construction as a water retention agent and in personal care products as a thickener and stabilizer.
Methylcellulose is commonly used as a food thickener and emulsifier in the food industry. It is also used in personal care products, such as shampoos and lotions, as a thickener and stabilizer.
Hot soluble type (Non-surface treated) HPMC dissolution methods
Hot water dissolution method: Since HPMC is not dissolved in hot water, the initial HPMC can be uniformly dispersed in hot water and then rapidly dissolved upon cooling.
Two typical methods as follows:
Adding hot water(85°C) into the container. Hydroxypropyl methylcellulose was gradually added with slow stirring, and the HPMC floated on the surface of the water, and then gradually formed a slurry, and the slurry was cooled with stirring.
Adding 1/3 or 2/3 of the required amount of hot water(85°C) to the vessel , gradually add HPMC to hot water and keep stirring. Cold water or ice water is then added to the hot cement slurry to achieve the desired level. Stirring is continued to cool the mixture.
Powder mixing method: Mix the HPMC powder with a large amount of other powdery substances, mix well with a blender, and then add water to dissolve. At this time, HPMC can be dissolved without agglomeration, because each tiny small corner has only a little HPMC. The powder will dissolve immediately upon contact with water. – This method is used by putty powder and mortar manufacturers.
Organic solvent humidification dissolution method: HPMC is pre-dispersed or wetted with an organic solvent such as ethanol, ethylene glycol or oil, and then dissolved in water, and HPMC can be easily dissolved.
Instant type (Surface treated) HPMC dissolution methods
Surface treatment powders are specially developed to prevent lumping in wet-mixing applications such as paint and emulsion applications. In order to prepare a solution from the surface-treated powder, the powder is directly placed in cold water. Over time, a fully developed solution of suitable viscosity was prepared by continuously stirring the solution.
Note: In order to dissolve quickly, the instant type (Surface treated) HPMC will dissolve rapidly after adjusting PH value to 8-10 by adding ammonia or alkali water, forming a solution.
How to Maintain HEC For Home Care
HEC should be stored in a cool, dry place away from direct sunlight and sources of heat. It should also be handled with care to avoid exposure to dust and other particulates, as well as potential hazards such as fire and explosion.
Factors Affecting HPMC Dissolution:
Temperature: In general, higher temperatures increase the dissolution rate of HPMC. However, extreme temperatures can cause gelation, affecting solution performance.
PH: HPMC is stable over a wide pH range. However, acidic or alkaline conditions may affect its dissolution. In most cases, a neutral or slightly alkaline pH is preferred for optimal dissolution.
Polymer grade: Different grades of HPMC have different molecular weights and substitution levels, affecting their solubility. Lower molecular weight grades generally dissolve faster.
Particle size: Reducing the particle size of HPMC increases the surface area available for dissolution, thus speeding up the process.
Presence of salt: Certain salts, such as sodium chloride, can affect HPMC dissolution. They may enhance or impede the process, depending on specific conditions.
Future Trends and Innovations:
Looking ahead, several trends and innovations are expected to impact the use of HPMC in detergent and detergent formulations:
Nanotechnology
Incorporating HPMC nanoparticles into detergent formulations can improve cleaning efficiency and reduce environmental impact through targeted delivery of active ingredients.
01
Microcapsules
HPMC-based microcapsules can encapsulate fragrances, enzymes and other active ingredients to provide controlled release and extended efficacy in cleaning applications.
02
Sustainable packaging
Manufacturers can explore the use of HPMC-based materials for environmentally friendly packaging solutions that reduce reliance on traditional plastics and increase recyclability.
03
Customized formulations
Advances in HPMC modification and formulation technology enable the development of custom detergent and cleaner formulations to meet specific performance and sustainability requirements.
04
Properties of HPMC (Hydroxypropyl Methyl Cellulose)
Hydroxypropyl MethylCellulose is a non-ionic cellulose ether, in the appearance of white powder, odorless and tasteless. It is soluble in water, most polar organic solvents, and the appropriate proportion of ethanol/water, propanol /water and dichloroethane, but insoluble in diethyl ether, acetone, and anhydrous alcohol. In cold water, it will swell into a clear or slightly turbid colloidal solution.
1. Stability
Hydroxypropyl MethylCellulose has many features such as thickening power, salt discharge performance, pH stability, water retention, excellent film-forming properties, extensive resistance to enzymes, dispersion and adhesion.
In latex paints and water-soluble resin coatings, Hydroxypropyl MethylCellulose acts as film-forming agents, thickeners, emulsifiers and stabilizers, making the coating film with good wear resistance, leveling property, and adhesion, and improving the surface tension, pH stability, and compatibility with metal color materials. In the water-based paints, Hydroxypropyl MethylCellulose has excellent storage stability, maintains uniform viscosity, makes pigments uniformly dispersed, and basically won’t be affected by the pH value.
2. Water-holding property
In putty, the main roles of celluloses are water retention, adhesion, lubrication and so on. Hydroxypropyl MethylCellulose has high water-holding performance, surface opticity and improves uniformity. This helps to avoid crusting and off-powder phenomena, improve resistance to shrinkage, cracking and vertical flow, and to improve the work efficiency since the painting job is comfortable and saves effort.
3. Dispersibility
In the production of synthetic resin, Hydroxypropyl MethylCellulose plays the role of protective colloidal agents and can effectively prevent polymeric particles from agglomerating. In the floating polymerization of vinyl chloride (VC), the disperse system has a direct impact on the product, PVC resin, and the quality of processing and products. It helps to improve the thermal stability of the resin and control the particle size distribution(that is, adjust the density of PVC). PVC resins made from high-quality cellulose ethers not only can ensure that the performance meets international standards, but also have apparent physical properties, fine particle characteristics and excellent melting rheological behavior.
4. Adhesion
In such materials as the adhesive mortar and surface mortar in the thermal mortar system, celluloses mainly plays a role of bonding, water retention and increasing strength. It also helps to improve construction, water-retaining property and resistance to hanging. Furthermore, it improves the resistance to vertical flow, shrinkage and cracking, and thus improves the bonding strength and the work efficiency.
5. Thickening property
In interface agents, Hydroxypropyl MethylCellulose mainly functions as the thickening agent and can increase the the tensile strength and flexural strength. It also helps to improve surface coatings, enhance adhesion and improve the bonding strength of mortar. Furthermore, good permeability can improve the uniformity of the interface, enhance lubricity and fluidity of mortar, make coating easier and thus improve work efficiency.
6. Constructability
In the bonding of tiles, tile adhesives can function as water-retaining agent and adhesives, and can greatly improve construction performance of adhesives, allow longer opening hours and greater cohesion, and prevent falling of tiles due to excessive water loss. Hydroxypropyl MethylCellulose has the properties of improving the workability, good water-retaining property, enhancing adhesion and high resistance to hanging. Hydroxypropyl MethylCellulose can improve the sticking and tiling efficiency, and also enhance bonding strength and shear strength.
Our Factory
Kaimaoxing Factory has focused on the production of cellulose for 15 years. During the 15 years, it has expanded its production line and floor space twice, serving more than 2,000 domestic customers. Provide reasonable solutions for joint agent applications and other fields.
FAQ
As one of the most professional hydroxypropyl methyl cellulose manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy high-grade hydroxypropyl methyl cellulose at competitive price from our factory.
HPMC Chemical Auxiliary Agent, Dispersible Polymer Powders, HPMC Glue