Crospovidone(PVPP) application

Crospovidone is a water-insoluble tablet disintegrating agent, used in direct compression and dry or wet granulation tableting process at a concentration of 2-5%; crospovidone can quickly exhibit high capillary activity and excellent water Chemical ability, almost no tendency to gel; studies have shown that: the size of crospovidone particles strongly affect the disintegration of antipyretic analgesic tablets, the larger particles of crospovidone can play a faster disintegration effect. Crospovidone is a very good disintegrant. It can be used in tablets for 1-2% to obtain the disintegration of other commonly used common disintegrants, and has good reworkability, that is, when recycling. There is no need to add a large amount of disintegrant, which is called a super disintegrant.
After the crospovidone is used as a disintegrant to form a tablet, the tablet has high hardness, short disintegration time limit, high dissolution rate, strong stability, and does not change over time.
PVPP can also be used as a dry adhesive, filler and excipient for tablets, capsules and granules. The smaller particle size can reduce the one-sided markings in tablets and improve the uniformity of tablets. The amount is 20-80 mg/tablet.
PVPP can also be used as a dissolution promoter. Co-evaporation technology can increase the solubility of poorly soluble drugs: firstly, the appropriate solvent is used to adsorb the drug to the crospovidone, and then the solvent is evaporated. This technique can be obtained faster. Dissolution rate.
This product is also widely used in the food industry as a filter aid for the production of wine and vinegar for the removal of enzymes and proteins.

PVPP and polyphenols form stable complexes that can be used to purify water-soluble or alcohol-containing herbal extracts and tinctures to improve the stability of botanicals. 
Hefei Teng Chao Chemical Material Co.,Ltd. is a mediumsized chemical corporation specialized in the manufacturing and sales of fine chemical materials. Our main products including Polyvinylpyrrolidone(PVP),2-Pyrrolidone,N-methylpyrrolidone ,Gamma-butyrolactone etc.

n methylpyrrolidone application is widely

N-methylpyrrolidone (NMP) is an N-methyl derivative of 2-pyrrolidone, which is a nitrogen heterocyclic compound and has a molecular formula of C5H9O. It is a high-boiling solvent for colorless to pale yellow transparent liquid. It has the characteristics of strong polarity, inertness, low viscosity, strong solubility, good stability, no corrosion, low volatility, etc. It has been applied in many fields such as medicine, food, daily chemical, textile, and detergent. Solvents mainly used in polymerization (such as polyamide, polyimide, polyurea, etc.), spinning solvents for synthetic fibers, solvents for processing functional resins into films

2-pyrrolidone application

2-pyrrolidone is miscible with water, alcohol, ether, chloroform, benzene, ethyl acetate and carbon disulfide; it is insoluble in petroleum ether, and its main use is as polyvinylpyrrolidone (PVP) monomer N-vinylpyrrolidone (NVP) The raw material is also a high-grade solvent, which is used in the production of pharmaceuticals, resins, acetylene recycling, and floor wax special inks. NVP can be prepared by reacting 2-pyrrolidone with acetylene and then polymerizing to obtain PVP. PVP has excellent solubility, low toxicity, film formation, complexation, surface activity and chemical stability, and is widely used in medicine, food, and day. In the fields of chemicals, coatings, polymer polymerization, etc., there are many uses in textiles, printing and dyeing, papermaking, photosensitive materials, agriculture and animal husbandry. There are three main industrial production routes for 2-pyrrolidone: 1) Rebec method: raw materials acetylene and formaldehyde are first reacted to form 1.4-butynediol, hydrogenated to 14-butanediol, converted to γ-butyrolactone, and then Ammonia is reacted to obtain 2-pyrrolidone. 2) Recently, due to the successful development of a new process for the oxidation of butane or 1.4-butanediol, the source of γ-butyrolactone is abundant, so it has become the main route for the production of pyrrolidone series products. It should be obtained as 1.4 dibutyl, partially hydrogenated to aminobutyronitrile, and hydrolyzed to 2-pyrrolidone.

2-pyrrolidone can be used as a high boiling point solvent for petroleum processing; to prepare N-vinylpyrrolidone, acrylonitrile, aminobutyric acid; also as a plasticizer for coatings; to form a polyamide under the action of benzoyl chloride and an alkali metal -4 and so on. 2-Pyrrolidone is a class of pyrrolidine compounds having a five-membered lactam ring, which is widely found in natural products and various synthetic compounds. Since pyrrolidone compounds have a wide variety of biological activities and are widely used in the field of medicine, many pyrididone structures can be modified and functionalized to prepare a plurality of compounds having various biological activities.

Morphological Classification Of Polyaluminium Chloride

A. Liquid may appear colorless, transparent, yellowish, light yellow to yellowish brown. Liquid polyaluminum chloride is not dry form, it doesn't need to be diluted, convenient handling, the price is relatively cheap advantages, disadvantages is the transport needs tank car, unit transport costs increase (per ton of solid equivalent to 2-3 tons of liquid), it is more suitable for users within 100 km.

B. Solid aluminum chloride is the dried form of liquid polyaluminum chloride, which has the advantage of convenient transportation and does not need tank truck. The disadvantage is that it needs to be diluted in use to increase the working intensity.

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Factory : Area A No.9, Technology Park, Sanshui District, Foshan, Guangdong, China

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Caustic Soda Manufacturer Tells You The Distinction Between Flake Alkali And Granular Alkali

Caustic soda is commonly known as sodium hydroxide, which is a basic chemical raw material. It is widely used in light industry such as papermaking, cotton fabric, chemical industry, machinery industry, metallurgy industry and so on. Many users will compare caustic soda flakes and caustic soda pearls, do not know the difference between the two, here is a summary of some relevant content.

The biggest difference between caustic soda flakes and caustic soda pearls is the shape, The caustic soda pearls are granular and caustic soda flakes are lamellar. In addition, the processing methods of caustic soda flakes and caustic soda pearls are also different. Granular caustic soda pearls is obtained by drying directly after production, while caustic soda flakes is obtained by pressing tablets. In application, pearls is easy to use and easy to weigh, which is mainly suitable for laboratory use. The cost of flakes is low, suitable for industrial production.

From the above, in addition to the different shapes of them, the application scope is different. Therefore, when choosing products, users only need to investigate the quality of good products according to their own industrial needs.

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Marketing Center: RM 603, RuiYing Building, Nanhai District, Foshan, Guangdong, China
Factory : Area A No.9, Technology Park, Sanshui District, Foshan, Guangdong, China
Tel        : +86 13929123248
Email    : exp@broviecn.com
Fax       : 0086-757-85510580
Website : www.bv-alu.com

Advantages Of Anionic Polyacrylamide

Anionic polyacrylamide is used in mining, mineral processing and metallurgy. Through the use of polyacrylamide, it can promote the rapid settlement of effective solid, improve the solid-liquid separation effect, reduce tailings loss and environmental pollution, and reduce production costs. Generally speaking, products with high molecular weight are needed in the process of mineral processing to ensure fast sedimentation rate, good centrifugal process effect and easy to obtain better economic effect.

Characteristics of anionic polyacrylamide:

Clarification and purification effect;

Sedimentation facilitation;

Filter facilitation;

Thickening and other effects.

In waste liquid treatment, sludge concentration and dehydration, mineral processing, coal washing, paper making and other aspects, can fully meet the requirements of various fields.

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Marketing Center: RM 603, RuiYing Building, Nanhai District, Foshan, Guangdong, China

Factory : Area A No.9, Technology Park, Sanshui District, Foshan, Guangdong, China

Tel        : +86 13929123248

Email    : exp@broviecn.com

Fax       : 0086-757-85510580

Website : www.bv-alu.com

Synthesis Of Polyaluminium Chloride

Polyaluminium chloride varies in content and colour. What causes this? The synthesis method of aluminum chloride is also one of the factors. Polyaluminum chloride manufacturers tell you about two conventional synthesis methods.

1. By boiling pyrolysis, crystallized aluminum chloride is carried out boiling pyrolysis at 170℃, and hydrogen chloride released is absorbed into 20% hydrochloric acid and recycled. Then add water at more than 60℃ for curing polymerization, and then through curing, drying, crushing, to produce solid polyaluminum chloride finished products.

2. Aluminum ash hydrochloric acid method, aluminum ash (mainly composed of alumina and aluminum) was added into the reactor pre-added into washing water in a certain proportion. Hydrochloric acid was slowly added under agitation for condensation polymerization. The liquid product is diluted, filtered, evaporated, concentrated and dried to produce solid polyaluminium chloride product.

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Marketing Center: RM 603, RuiYing Building, Nanhai District, Foshan, Guangdong, China

Factory : Area A No.9, Technology Park, Sanshui District, Foshan, Guangdong, China

Tel        : +86 13929123248

Email    : exp@broviecn.com

Fax       : 0086-757-85510580

Website : www.bv-alu.com