Ethylene vinyl acetate (also known as EVA) is the copolymer of ethylene and vinyl acetate. The weight percent vinyl acetate usually varies from 10 to 40%, with the remainder being ethylene.

It is a polymer that approaches elastomeric materials in softness and flexibility, yet can be processed like other thermoplastics. The material has good clarity and gloss, barrier properties, low-temperature toughness, stress-crack resistance, hot-melt adhesive water proof properties, and resistance to UV radiation. EVA has little or no odor and is competitive with rubber and vinyl products in many electrical applications.

Major applications

Shoe Materials, Soles, Packing Bags, Agricultural Thermal Film, Intramembrane of Tetra Pack, Paper Finishing Films, Plastic Bottles, and various Other Injection Molding applications, etc. EVA slippers and sandals are nowadays very popular because of its properties like light weight, easy to mold, odorless, glossy finish, and cheaper compared to natural rubber.

 

 

Linear low-density polyethylene (LLDPE) is a substantially linear polymer, commonly made by copolymerization of ethylene with longer-chain olefins. Linear low-density polyethylene differs structurally from conventional low-density polyethylene because of the absence of long chain branching.

The linearity of LLDPE results from the different manufacturing processes of LLDPE and LDPE. In general, LLDPE is produced at lower temperatures and pressures by copolymerization of ethylene and such higher alpha olefins as butene, hexene, or octene.

LLDPE has penetrated almost all traditional markets for polyethylene, it is used for plastic bags and sheets, plastic wrap, stretch wrap, pouches, toys, covers, lids, pipes, buckets and containers, covering of cables, etc.

 

 

 

Polyvinyl chloride, commonly abbreviated PVC, is a thermoplastic polymer. It is a vinyl polymer constructed of repeating vinyl groups (ethenyls) having one of their hydrogens replaced with a chloride group.

Polyvinyl chloride is the third most widely produced plastic, after polyethylene and polypropylene. PVC is widely used in construction because it is cheap, durable, and easy to assemble.

It is used in making flexible hoses and tubing, flooring, to roofing membranes, and electrical cable insulation. Roughly half of the world's polyvinyl chloride resin manufactured annually is used for producing pipes for various municipal and industrial applications. PVC is commonly used as the insulation on electric wires.

 

 

 

Polypropylene (PP) is a thermoplastic polymer, made by the chemical industry and used in a wide variety of applications, including packaging, textiles, stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes.

An addition polymer made from the monomer propylene, it is rugged and unusually resistant to many chemical solvents, bases and acids.

Polypropylene is normally tough and flexible, especially when copolymerized with ethylene. This allows polypropylene to be used as an engineering plastic, competing with materials such as ABS.

Polypropylene is reasonably economical, and can be made translucent when uncolored but is not as readily made transparent as polystyrene, acrylic, or certain other plastics. It is often opaque or colored using pigments. Polypropylene has good resistance to fatigue.

 

 

Maleic Anhydride is the anhydride of maleic acid which carboxylic acid groups are next to each other in the cis form. Maleic Anhydride has a cyclic structure with a ring containing four carbon atoms and one oxygen atom. It is soluble in acetone, hydrolyzing in water. It is prepared in commerce by the oxidation of benzene with catalyst at high temperatures or by the reaction of C4 (butane) with oxygen in the presence of vanadium catalyst.

Maleic Anhydride's biggest single use is in the manufacture of unsaturated polyester resins for use in fibre-reinforced plastics in the automotive, construction, marine, consumer goods and agricultural industries.

Maleic anhydride is used as a chemical intermediate in the synthesis of fumaric and tartaric acid, certain agricultural chemicals, resins in numerous products, dye intermediates, and pharmaceuticals. It is also used as a co-monomer for unsaturated polyester resins,an ingredient in bonding agents used to manufacture plywood, a corrosion inhibitor, and a preservative in oils and fats.

 

 

Propylene glycol, is an organic compound. It is a colorless, nearly odorless, clear, viscous liquid with a faintly sweet taste, hygroscopic and miscible with water, acetone, and chloroform.

Propylene Glycol is used soft drinks, popcorn, food colorings, Lotions, creams, shampoos, antiperspirants, cosmetics, lipstick, lubricants, Room deodorizers, cleaners, sanitizers, soap, etc.