Anhui Wanwei updated high-tech material Industry Co. Ltd has the production capacity of 250,000 tons of polyvinyl alcohol . PVA is a kind of basic chemical with big potential. It can be widely used in many industries such as Chemicals, Textile, Plastic, Paper, Synthetic leather, Glue, Construction etc. It has wide development space due to its easy degradation and the excellent environmental characteristics. 

　　Through continuous innovation and improvements, the company grasped many key technologies for the PVA resin production and can produce a wide range of resin products with different polymerization and alcoholysis degree. The process adopted PLC and DCS control system and the company also obtained certificates of ISO9001, ISO14001.

　　As the wholly owned subsidiary of Wanwei Group, Guangxi Guangwei Chemical Co. , Ltd initiates the new PVA production route exclude from 'calcium carbide and acetylene ' and 'petroleum, natural gas and Ethylene' way, adhere to the low carbon economic development and utilization of resources of rich sugar cane in guangxi .

　　The holding subsidiary Mengwei Science and technology co., ltd which uses of the rich resource of coal ,electricity and calcium carbide in Inner Mongolia as well as the full set of production technology of Wanwei is staging an annual output 200,000 tons of vinyl acetate and 100,000 tons of polyvinyl alcohol production plant.The annual output of PVA is 250,000 tons, accounting for more than 20 percent of national output. The production capacity for a single product also occupies a leading position in the world.

　　With large output, variety, quality and stability and other advantages, Wanwei can produce PVA17-99, PVA26-99, PVA04-99, PVA05-99, PVA17-88, PVA05-88 models of PVA products.

Market application：

一、Name: Polyvinyl alcohol

Abbreviation: PVA 

二、the molecular composition and structure：

（ CH3CHCOOCH3 ）x （ CH2CHOH ）y

　　in which: x + y indicates the degree of polymerization, y / (x + y) that alcoholysis degree

三、The physical and chemical properties

　　1、The physical property

　　A、Solubility：

　　The Polyvinyl alcohol powder can be dissolved in water. PVA with Less than 95%alcoholysis degree can be dissolved in water at room temperature and PVA with more than 99.5% alcoholysis degree can only be dissolved in hot water above 95℃.

　　B、Thermal Stability：

The heat can make PVA soften and there is no significant change below 40℃ but 160 ℃ or more, for a long time heated ,it will gradually be colored .when 220℃ above it is decomposed to produce water, acetic acid, acetaldehyde and propylene aldehyde.

　　C、Chemical Resistance：

PVA is almost free from weak acid, weak base, or the impact of organic solvents, oil is very high.

　　D、Storage Stability：

PVA is a low viscosity of the polymer, the solution is stable at room temperature. Aqueous solution in the storage process is not degenerate.

　　E、Film：

As the high adhesion between PVA molecular, PVA is easy to form a colorless, transparent film with good mechanical strength, smooth surface without tacky, and good solvent resistance. Monolayer has excellent light-admitting quality , high permeability rate, no charged, no absorption and good printing character . 

2、The Chemical Property

PVA can be seen as a linear polymer with a hydroxyl polymer. Hydroxyl of molecules which has high activity can be a typical chemical reaction of low-alcohol, such as esterification, etherification, acetal, etc and can also react with a number of inorganic compounds or organic compounds.

　　四、Package, Transport and Storage: Appearance：Floc , Flake, Powder. 

　　A、12.5 kg, 20 kg, 25 kg plastic woven bag or paper bag, 750Kg ~ 1000Kg woven tons of bags.　

　　B、Transport using a clean conveyance to prevent moisture, rain and sun and moving gently to prevent the packag

Anhui Wanwei updated high-tech material Industry Co. Ltd

International Business Department

　　Anhui Wanwei international trade Co., Ltd

　　TEL：+86-551-82189406 +86-551-82189832

　　FAX：+86-551-82317233 +86-551-82189233

　　E-mail：jckb2@126.com 

　　In order to meet the demand of rapid development of Wanwei Group, Anhui Wanwei international trade company limited which is the wholly owned subsidiary of Anhui Wanwei updated high-tech material Industry company limited was established in August 1, 2010.

　　Anhui Wanwei international trade company has the self-supported import and export right. On the one hand it can import all kinds of chemical raw materials, such as VAM, PTA, ethylene glycol and other products for Wanwei Group. One the other it also can export polyvinyl alcohol, high strength and high modulus PVA fibers and Redispersible emulsion powder etc . And to meet the needs of domestic and foreign customers, Wanwei international trade company agents various types of goods import and export .

　　With professional and meticulous work, The company is dedicated to domestic and foreign customers to provide efficient quality services.

Products Specifications and Application
產(chǎn)品規(guī)格及用途

Notes:1. ◎: general use 2. ☆:Use under the situation 3. ●: powder more suitable