PVA is the most advanced grade in terms of usage among polyvinyl alcohols. Practically, everyone understands the trouble that 88 PVA does dissolve instructions may cause. First of all, regardless of the mounting center pva instructions, adheres well to a wide variety of substrates. Secondly, applying 5 percent weight-for-weight dilution of PVA in water to a variety of solutions. This ensures that our clientele can fully rely on us to provide what they need precisely when they need to. With nearly two decades of experience, Mariwala PVA has developed highly-effective strategies to meet your needs.
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Poly(vinyl alcohol) (PVOH, PVA, or PVAl) is a water-soluble synthetic polymer. It has the idealized formula [CH2CH(OH)]n. It is used in papermaking, textile warp sizing, as a thickener and emulsion stabilizer in PVAc adhesive formulations, in a variety of coatings, and 3D printing. It is colourless (white) and odorless. It is commonly supplied as beads or as solutions in water. Without an externally added crosslinking agent, PVA solution can be gelled through repeated freezing-thawing, yielding highly strong, ultrapure, biocompatible hydrogels which have been used for a variety of applications such as vascular stents, cartilages, contact lenses, etc.
PVA is used in a variety of medical applications because of its biocompatibility, low tendency for protein adhesion, and low toxicity. Specific uses include cartilage replacements, contact lenses, and eye drops.Polyvinyl alcohol is used as an aid in suspension polymerizations. Its largest application in China is its use as a protective colloid to make polyvinyl acetate dispersions. In Japan its major use is the production of Vinylon fiber.This fiber is also manufactured in North Korea for self-sufficiency reasons, because no oil is required to produce it. Another application is photographic film.
PVA-based polymers are used widely in additive manufacturing. For example, 3D printed oral dosage forms demonstrate great potential in the pharmaceutical industry. It is possible to create drug-loaded tablets with modified drug-release characteristics where PVA is used as a binder substance.
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Medically, it may also used as the embolic agent in a Uterine Fibroid Embolectomy (UFE)
Polyvinyl acetals
Polyvinyl acetals are prepared by treating PVA with aldehydes. Butyraldehyde and formaldehyde afford polyvinyl butyral (PVB) and polyvinyl formal (PVF), respectively. Preparation of polyvinyl butyral is the largest use for polyvinyl alcohol in the U.S. and Western Europe.
Shandong Near Chemical Co.,Ltd is located in the beautiful Yellow River Delta, the mouth of the Yellow River into the sea-Dongying City. With a registered capital of 30 million yuan, it was founded in and has grown rapidly with total assets180millionyuan and 100 employees. Near Chemical is a comprehensive service company focusing on import & export of chemicals and domestic trade. We are integrating rich chemical resources along with individual customized services for all global clients.
Our company adheres to the market-oriented, committing to exploring the diversified international market, as well as the principle of honesty and trustworthiness. The clients of Near Chemical always come first.
In the past decade, Near Chemical has established a stable and friendly partnership with thousands of customers over 60 countries and regions. We have spread wide range of chemicals in various fields suchas pharmacy,petroleum, animal husbandry, foodprocessing, printing&dyeing, manufacturing industries etc. Near Chemical now has warehousing, trading, public utilities ,property management and other comprehensive entities, and gradually develop to collectivization, internationalization and Industrialization. Our company has a good development prospect and unlimited potential future.
Our main production lines are including Methylene Chloride 30,000 tons/year, Maleic Anhydride 30,000 tons/year, Propylene Glycol 20,000 tons/year.
Meanwhile, we specialized in offering the following chemicals: Aniline,Dimethyl Formamide,Toluene diisocyanate,Polyether Polyol,Polymer Polyol, Methyl Acetate, Ethyl Acetate, Butyl Acetate, Glacial Acetic Acid, Potassium Hydroxide, Nitrile Butadiene Rubber Latex, Caustic Soda, Dipropylene Glycol, Ethylene Glycol, Phenol, Phthalic Anhydride, Cyclohexanone, Thiourea, Barium Carbonate, Aluminum Chloride, Calcium Nitrate, N-propanol, Methyl Ethyl Ketone, Methanol, Ethanol, Cyclohexane, Dimethyl Carbonate, Dichlorodifluoromethane, Dichlorofluoromethane, Trichloroethylene, Tetrachloroethylene, Epichlorohydrin, Sodium Hydroxide Liquid, etc.
We always carry out"quality first and service the best".
Near Chemical, Near U, Warm the world.
Our Advantage
10 Years Experiences
Our products have been promoted to all over Europe,North&South America, Middle-east, Asia and pacific area as well as Africa,we have established long term cooperation with our clients.
Quality service
Adhering to the principle of "quality first,service the best" Near Chem insists on providing high quality chemicals based on a complete Quality Assurance System. Meanwhile,we use SOP system to guarantee our whole logistics. Near Chem has built a mutual trust under honesty and integrity principles with customers all around the world.And will keep promoting our commitment to better a nearer Chem to the world.
24 hour service
24 hours quick and clear respond to our customers all around the world. Professional and individual after sales service to assure the Customer satisfaction.
FAQ
1 Q:Are you manufacturer?
A: As an integrated enterprise, we have our own production lines on Methylene Chloride, Chloroform and Aniline oil, meanwhile we are one of the experienced distributors for other chemicals such as cyclohexanone, Dimethyl Formamide, Propylene Glycol, Ethylene Glycol, Dimethyl Carbonate, Thiourea, Polyol, TDI, IPA, Ethanol etc. We have competitive price benefited by ready stock and good relations with some leading chemical manufacturers.
2 Q: How can you guarantee your quality?
A: Our factory owns mature production line under EPR quality system. We can guarantee the stability and qualification of the raw materials. And we also have SOP loading system to ensure the safety and timely transportation.
3 Q: Can I get some samples?
A: Yes, we welcome sample order for you to test and check our quality. Send me your requirements of the product you need. We can provide sample free of charge, and the express cost is on you.
4 Q: How to confirm the Product Quality before placing orders?
A : You can get free samples from us or taking our previous SGS Reports as reference or arrange SGS before loading.
5 Q: What is your MOQ?
A: Our MOQ is 20'FCL for each product.
6 Q: What kind of package do you have?
A: We have various of packages to meet needs of our customers,like Iron drums,plastic drums, IBC tanks, Flexitank, ISO TANK and bags etc.
7 Q :Which kind of payment terms do you accept?
A:We prefer TT, LC payment terms. Other payment terms are flexible to be further discussed.
8 Q:Can you give me a discount price?
A: Yes. It depends on your order qty.
9 Q: How about your delivery? How long is your delivery time?
A: Prompt and reliable delivery by professional shipping lines.
Generally it takes 14 days after deposit or original LC.
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