Keywords

• Poly(1-hydroxyethylene)
• PVA
• 9002-89-5

Quick Details

• ProName: Poly(vinyl alcohol)
• CasNo: 9002-89-5
• Molecular Formula: (C2H4O)n
• Appearance: Floc , Flake, Powder
• Application: Textile, Coating
• DeliveryTime: 15 days
• PackAge: 25kg/bag
• Port: Tianjing, Shanghai
• ProductionCapacity: 10000 Metric Ton/Year
• Purity: 99%
• Storage: Keep container tightly closed in a dry...
• Transportation: by sea
• LimitNum: 25 Kilogram
• Grade: Industrial Grade

Superiority

Orchid Chemical was established in 2009; we are headquartered in Hangzhou, which is 200 km from China's biggest sea port, Shanghai. Orchid chemical is a joint-venture company, committed to developing, manufacturing and supplying chemicals for pharmaceuticals, cosmetics, food, agrochemicals, energy and the mining industry.
We own two sites, one each located in Ningbo and Taizhou, with one additional R&D center in Shanghai. Also, we have very close relationships with more than 300 chemical factories in China.
Our products have been exported to more than 70 countries. Our turnover reached USD 50 million.

Details

1. Name: Polyvinyl alcohol

2. the molecular composition and structure：

(CH3CHCOOCH3)x (CH2CHOH)y

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

3. 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.

4. Application:

Mainly used in Textile sizing material, bond, coating, emulsifier, soil modifying agent,etc.