9003-22-9
Vinyl chloride-vinyl acetate copolymer
CAS: 9003-22-9
Molecular Formula: C6H9ClO2
9003-22-9 - Names and Identifiers
9003-22-9 - Physico-chemical Properties
| Molecular Formula | C6H9ClO2 |
| Molar Mass | 148.59 |
| Density | 1.36g/mLat 25°C(lit.) |
| Melting Point | 80 °C |
| Appearance | powder |
| Color | White |
| Odor | bland odor |
| Storage Condition | -20°C |
| Use | It is widely used in the production of high-grade plastic composite ink. Used in the manufacture of records, high-grade floor materials, toys, spinning, coatings, etc. |
9003-22-9 - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R45 - May cause cancer R46 - May cause heritable genetic damage R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/38 - Irritating to eyes and skin. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S22 - Do not breathe dust. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3077 9/PG 3 |
| WGK Germany | 3 |
| RTECS | AK0950000 |
9003-22-9 - Nature
Open Data Verified Data
It is internally plasticized polyvinyl chloride. The content of vinyl acetate in industrial products is generally 2%~ 20%, and the molecular weight is expressed as 0. 45~0.80, there are also individual manufacturers of vinyl acetate content of 20% ~ 40% of the "high vinegar" products. Vinyl acetate is introduced into the molecular chain of polyvinyl chloride, and the ester group in the side chain plays an internal plasticizing role, thus reducing the softening temperature to make the processing easy. It is suitable for the production of hard products and high filler content products. It also improves the solubility in solvents, is suitable for formulating coatings, and improves the adhesion to metals. The performance of the product depends on the content of vinyl acetate. Taking the content of 15% as an example, the tensile strength is 60MPa, the heat distortion temperature (0. 46MPa load) is 57 ℃, the Rockwell hardness is 50, and the Izod notch impact strength is lOJ/m2.
Last Update：2024-01-02 23:10:35
9003-22-9 - Preparation Method
Open Data Verified Data
suspension method, solution method, emulsion method, micro-suspension method and bulk polymerization method can be used. Suspension method and solution method are used more.
- suspension method is generally intermittent production, vinyl chloride and vinyl acetate in suspension (gelatin or polyvinyl alcohol, methyl cellulose, sodium polyacrylate and other water-soluble polymers) and initiators, buffers, surfactants, the polymerization is carried out in the presence of a molecular weight regulator and the like. The polymerization temperature is 40 to 70 ° C., and the time is 6 to 16H. After the polymerization reaction is completed, the excess monomer is distilled out, and the obtained copolymer is washed, dehydrated and dried to obtain a product.
- solution method for example, vinyl chloride and vinyl acetate monomers are mixed and dissolved in cyclohexane or n-butane to prepare a 20% solution by adding 0. The copolymer containing 10% ~ 25% of vinyl acetate (VAC) can be obtained by polymerization at 40 °c with 5% of initiator. The terpolymer containing 86% of vinyl chloride (VC), 13% of vinyl acetate and 1% of maleic anhydride can be obtained by polymerizing in dioxane solvent at 85~90 ℃ for 48 hours. The copolymer with narrow molecular weight distribution can be prepared by solution polymerization, which is suitable for the production of coatings and adhesives.
Last Update：2022-01-01 11:07:45
9003-22-9 - Safety
Open Data Verified Data
PVC film bag, jacket Kraft paper bag packaging, 25kg net weight of each bag. Store in a clean and dry place to prevent moisture and broken bags.
Last Update：2022-01-01 11:07:46
9003-22-9 - Molding Process
Open Data Verified Data
It can be processed by conventional extrusion, injection, calendering and blow molding. Compared with the same molecular weight of vinyl chloride homopolymer, the processing temperature is lower, the processing speed is fast, the cycle is short, the plasticizer can be added less in the processing of soft products, and the plasticizing efficiency such as chlorinated paraffin can also be used
Lower by-plasticizer. Taking the processing of the dense-textured record as an example, the material is mixed evenly according to the formula, and then rolled into a sheet on a roller at 120 ° C., and sliced into a rough body according to a certain specification. The coarse blank of the specified size is pressed into a sheet by a hot-feed Press and cut into edges to form a product.
Last Update：2022-01-01 11:07:45
9003-22-9 - Reference Information
| (IARC) carcinogen classification | 3 (Vol. 19, Sup 7) 1987 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | used in the manufacture of records, high-grade paving materials, toys, silk-drawing, coatings and so on are widely used in the production of advanced plastic composite ink. Used in the manufacture of records, high-grade paving materials, toys, silk, paint, etc. |
| category | toxic substances |
| flammability hazard characteristics | flammable; Toxic hydrogen chloride emissions from thermal decomposition |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| extinguishing agent | dry powder, foam, sand and water |
Last Update：2024-04-09 21:04:16
