Your Professional Polymer Series Of Chemicals Supplier
Shandong Evo Water Technologies Co., Ltd. owns two factories, covering an area of approximately 146,000 square meters.
Our high - quality products have won wide customer recognition and trust, resulting in steadily increasing sales volume and market share.
Long - term strategic partnerships with key clients have strengthened our market standing. Our sales team, with in - depth market knowledge and good customer service, is crucial for these achievements.
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High Efciency Decolorizing FlocculantCAS Number: 55295-98-2 English Name: Water Deodorizing Agent Main functions: demulsification, decolorization, flocculation. There is no need to adjust the pH value to achieve very good...view more -
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Nitrilotris Methylenephosphonice acid 50%Amino tris(methylene phosphonic acid)view more
CAS NO.6419-19-8
M.W: 299.05
Active content：50%min -
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![Hydrolyzed Polymaleic Anhydride]()
Hydrolyzed Polymaleic AnhydrideSolid content % 48.0 minview more
Bromine value mg/g 80.0 max
pH （1％water solution） 2.0-3.0
Density （20℃）g/cm3 1.18 min -
![Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer]()
Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid C...Solid content % 30 minview more
Free monomer （as AA）% 0.5 max
Density （20℃）g/cm3 1.10 min
pH（1% water solution） 2.0-3.0 -
![Polyepoxysuccinic Acid PESA]()
Polyepoxysuccinic Acid PESAAppearance Colorless or amber transparent liquidview more
Solid content % 40.0 min
Density (20℃)g/cm3 1.28 min
pH(1% water solution) 9.0-12.0 -
![Sodium Of Polyaspartic Acid PASP]()
Sodium Of Polyaspartic Acid PASPAppearance Yellow to brown liquid.view more
Solid content, % 40.0 min
Density (20℃), g/cm3 1.20 min
pH (1% water solution) 9.0 - 11.0
Why Choose Us
Our Product
We mainly provide membrane chemicals, circulating cooling water treatment chemicals, sewage treatment chemicals, oilfield chemicals, boiler water treatment chemicals, papermaking and dyeing chemicals, as well as water treatment monomers.
Product Application
Our products are also extensively applied in various fields, such as oilfields, detergents, textile & dyeing, paper - making, boilers, seawater desalination, waterworks, purified water plants, food factories, pharmaceutical factories, wineries, beverage factories and farms.
Production Equipment
UV sterilizer, air purifier, ultra-high temperature sterilizer, reverse osmosis equipment, water treatment equipment.
Hydrolyzed Polymaleic Anhydride
Hydrolyzed polymaleic anhydride is a polycarboxylic acid organic compound that is resistant to high temperatures and can chelate calcium, magnesium, iron and other ions in water. It has good thermal stability, a wide range of pH values, and is suitable for water with high hardness. It is an excellent scale inhibitor. As a low-cost, high-performance green water treatment agent, hydrolyzed polymaleic anhydride (HPMA) has become an important member of high-efficiency water-soluble scale inhibitors and dispersants. Especially under harsh environmental conditions such as high temperature, high pH, high alkalinity, and high hardness, hydrolyzed polymaleic anhydride has a significant scale inhibition effect on calcium carbonate, calcium sulfate, etc., which is unmatched by general organic copolymer dispersants such as polyacrylic acid. At the same time, hydrolyzed polymaleic anhydride has low toxicity, no carcinogenic or teratogenic effects, and is often used as a water treatment agent for circulating cooling water, low-pressure boiler water, and anti-scaling treatment of oil field water injection, crude oil dehydration and other systems.
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Items |
Index |
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Appearance |
Light yellow to brownish red transparent liquid |
|
Solid content % |
48.0 min |
|
Bromine value mg/g |
80.0 max |
|
PH (1％water solution) |
2.0-3.0 |
|
Density (20℃)g/cm3 |
1.18 min |
Hydrolyzed polymaleic anhydride is a low molecular weight polymeride with an average molecular weight of 400-800. No toxicity, soluble in water, high chemical and thermal stability, decomposed temperature above 330℃. Poly maleic anhydride has an obvious threshold effect under high temperatures (350℃) and high pH(8.3) levels, suitable to be used in the alkaline water system or built with agents.
It has good scale inhibition against carbonate and phosphate scales under a temperature of 300℃ with an effective time of as long as 100 hours. Due to its good scale inhibition and high-temperature tolerance properties, poly maleic acid is widely used in the desalination plant of flash vaporization equipment, low-pressure boiler, steam locomotive, crude oil evaporation, petroleum pipeline, and industrial circulating cool water systems.
In addition, hydrolyzed poly maleic anhydride has a good corrosion inhibition effect when used with zinc salt. Poly maleic anhydride can also be used as an additive for cement.
Important advantages in water treatment
Hydrolyzed polymaleic anhydride can disperse solid particles in water to prevent them from settling and scaling. It has the following advantages:
Hydrolyzed polymaleic anhydride has a good dispersing effect
It can disperse solid particles in water to prevent them from settling and scaling, thereby keeping the water clean and transparent.
Hydrolyzed polymaleic anhydride has a good scale inhibition effect
It can form complexes with calcium and magnesium ions in water to prevent them from settling and scaling, thereby reducing the maintenance and cleaning frequency of water treatment equipment.
Hydrolyzed polymaleic anhydride has a good corrosion inhibition effect
It can form complexes with metal ions to prevent oxidation and corrosion of metal ions, thereby extending the service life of water treatment equipment.
Hydrolyzed polymaleic anhydride has good stability
HPMA has good thermal stability and chemical stability, and can maintain its dispersibility and scale inhibition properties under different water treatment conditions.
Uses
Hydrolyzed poly maleic anhydride is usually used with organic phosphonate at 1~15 ppm for circulating cool water systems, oilfield fill water, crude oil dewatering, and low-pressure boilers.
Poly maleic anhydride has good scale inhibition (98%) and scale stripping properties. Combined with zinc salts, it can effectively inhibit carbon steel corrosion.
Used in Oil Fields and Gas Wells.
In a closed gas well and a cement mud well, 0.01 to 5.0% by weight of polymaleic anhydride is added as a fluidity improver. It also acts as a turbulence inducer. The amount of the auxiliary agent is preferably about 0.1% to 2.0% by dry weight of the cement.
Especially when pumping mud into the required location during the well-sealing operation. Polymaleic anhydride greatly increases the flow rate and turbulence of the mud. The main advantage is that it can reduce the required pump pressure at a specific flow rate. Or get a higher flow rate under a fixed pumping condition.
Used in Daily Chemicals.
Polymaleic anhydride or its hydrolyzate may be added to detergents of sodium dodecylbenzene sulfonate. This can improve the quality of the detergent. Generally, the amount of poly maleic anhydride added is only 2.5%. After the addition, the detergent or soap can prevent the inorganic salt insoluble matter from sinking on the textile when washing the textile. This is especially effective when washing textiles with hard water. This not only saves resources but also improves washing efficiency.
Other Uses.
Reacts with a diamine to form a powder resin which is excellent in thermal stability. The heat resistance of this powder resin can reach 400℃.
It can be used as a dispersing agent for inorganic pigments to increase the fineness of inorganic pigments.
As a soil conditioner, hydrolyzed poly maleic anhydride can improve the alkali field and has a protective effect. This is because it is a polyelectrolyte and is water-absorptive.
In the emulsion suspension polymerization process, poly maleic anhydride can be used as a particle size modifier for the polymer.
Polymaleic anhydride and amine react to form semi amide. Semiamide can be used as a modifier for oil. Such as slurry dispersant, viscosity improver, rust inhibitor, and flocculant.
Polymaleic anhydride of different molecular weights can also be used as thickeners, dispersants, foam stabilizers, suspending agents, etc.
Hydrolyzed Polymaleic Anhydride Structural Analysis
Hydrolyzed polymaleic anhydride (HPMA) is the product of partial hydrolysis of polymaleic anhydride. It has been determined that about 60% to 70% of the polymaleic anhydride is hydrolyzed to a carboxylic acid. That is not completely hydrolyzed.
Hydrolyzed polymaleic anhydride is shown by the study of the structure-effect relationship of molecular microstructure. The increase in the degree of hydrolysis is advantageous for HPMA chemical improvement in scale inhibition performance. Therefore, a large degree of hydrolysis is ensured as much as possible during the synthesis of hydrolyzed polymaleic anhydride.
From hydrolyzed polymaleic anhydride structural analysis, its carboxyl group in the molecule can form compounds with calcium and magnesium ions in water. And HPMA can promote lattice distortion and turn the precipitation into a loose slag with good fluidity.
Hydrolysed polymaleic anhydride is the same as a polymer having a hydroxyl group or a sulfonic acid group. It can be dissociated into hydrogen ions and acid anions after being dissolved in water. The chain molecules are then negatively charged.
This long-chain negatively charged anion is adsorbed by calcium carbonate nucleus and fine crystal grains. Then bring HPMA with a more negative charge.
The crystallites are dispersed into the aqueous solution due to the homophobic electrical repelling. This prevents the fine grains from coagulating to form larger crystals. Thus, hydrolyzed polymaleic anhydride (HPMA) has a dissolution limiting effect. It has high scale inhibition performance when used at low doses.
In addition, the carbonyl group of HPMA has a strong complexation as an electron donor. This changes the normal morphology of calcium carbonate and calcium phosphate crystals. And can prevent hydrolyzed polymaleic anhydride from growing into a larger crystal. Thereby it has the effect of inhibiting scale formation and peeling off the old scale.
A 250 mL four-necked flask was charged with a thermometer, a stirrer, a condenser, and a dropping funnel, and a certain amount of maleic anhydride and water were added. The water is warmed to 55 to 60 °C.
After all the maleic anhydride has been dissolved, an appropriate amount of the catalyst is added. The stirrer was turned on while raising the temperature to the reaction temperature. The initiator was added dropwise through a dropping funnel over a period of time.
Pay attention to controlling the temperature during the addition of the initiator. After the completion of the dropwise addition, the reaction was continued for 1 hour to obtain a polymaleic acid product.
Usage
Hydrolyzed Polymaleic Anhydride is usually used together with organic phosphonate for circulating cooling water system, oilfield fill water, crude oil dewatering and low-pressure boilers.
Hydrolyzed Polymaleic Anhydride has good scale inhibition (98%) and scale stripping properties. When EDTMPS ratio of HPMA is 1:3, it can be used for low-pressure boiler furnace water treatment. When used together with zinc salts, it can effectively inhibit carbon steel corrosion.
Packing And Storage
200L plastic drum, IBC(1000L), customers’ requirements.
200L plastic drum 1000L IBC
Storage for one year in a shady room and dry place.
Safety Protection
- Acidity. Avoid contact with eyes and skin. Once contacted, flush with water.
Our Certifications
FAQ
We're well-known as one of the leading polymer series of chemicals manufacturers in China. We warmly welcome you to wholesale high quality polymer series of chemicals for sale here from our factory. Contact us for more details.
2 acrylamido 2 methylpropane sulfonic acid copolymer, Hydrolyzed Polymaleic Anhydride, Sodium of Polyaspartic Acid (PASP)
