Business Plan For Production of Unsaturated Polyester Resin
Start Manufacturing Business of Unsaturated Polyester Resin
The third largest class of thermoset moulding resins is unsaturated polyesters. They’re made when a diol condenses with a mixture of saturated and unsaturated anhydrides. When cross-linked with reactive vinyl monomers like styrene, the condensation products (reactive resins) form extremely durable structures and coatings. The types of anhydrides and glycols utilized, as well as their relative amounts, determine the qualities of the cross-linked resin.
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The bulk of commercial unsaturated polyester resins (UPR) are made up of 1,2-propylene glycol as the diol and phthalic and maleic anhydride as the saturated and unsaturated components. Epoxy resins such as epichlorhydrin or bisphenol a diglycidyl ether can also be used to condense anhydrides and acids. The epoxy compounds’ oxirane rings behave as difunctional glycols, which means they can replace all or portion of the polyols. Glycidyl methacrylates are sometimes used to cap carboxylated unsaturated polyesters.
To tailor the characteristics of unsaturated polyesters, a variety of glycols, acids, and anhydrides can be utilised. Long-chain aliphatic acids, such as adipic or succinic acid, improve flexibility but diminish chemical and heat resistance, therefore isophthalic acid (IPA) and terephthalic acid (TA) are sometimes used to provide higher thermal and chemical resistance. Ethylene glycols, such as diethylene glycol and polypropylene glycol, can improve flexibility in a similar way. To tie off excess hydroxyl and carboxyl groups and lower the molecular weight of the final prepolymer, monofunctional acids and bases can be used.
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Uses of Unsaturated Polyester Resins: The following are some of the benefits of polyester resin:
- Resistant to water and a wide range of chemicals.
- Weather and age resistance is adequate.
- It is inexpensive.
- Polyesters can endure temperatures of up to 80 degrees Celsius.
- Polyesters have good wetting properties when it comes to glass fibres.
- Relatively low shrinkage during curing, ranging from 4–8%.
- The range of linear thermal expansion is 100–200 x 106 K1.
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Market Outlook:
In 2019, the global unsaturated polyester resin market was worth USD 11.63 billion. In these end-use areas, recent advancements in the building and construction and tank and pipe industries are projected to fuel demand for isophthalic. The market for unsaturated polyester resin is expected to benefit from increased use of environmentally friendly and energy-saving products (UPR). Bio-based unsaturated polyester resins, which offer recyclability, excellent strength, and thermal and corrosion resistance with lower thickness, are expected to drive market growth.
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Demand is expected to be bolstered by technological breakthroughs, innovations, and studies aimed at broadening the product’s application scope. In 2019, Asia Pacific dominated the UPR market with a revenue share of over 57.0 percent. The growth of major end-use industries such as construction, electronics, transportation, and marine is driving the market.
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In the near future, the market for UPR is expected to grow due to the automotive industry’s strong manufacturing base in China, Japan, and India, as well as increased passenger vehicle sales. In addition, over the forecast period, rising demand for composites in solder pallets, speaker housings, and reinforced cell phones is expected to boost the market for UPR. However, the availability of alternative polymer resins for composites manufacturing, such as epoxy resin and nylon, is expected to limit demand for UPR in electrical applications.
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Key Players:
- Ashland India Pvt. Ltd.
- Ineos Styrolution India Ltd.
- Kanoria Chemicals & Inds. Ltd.
- Lanxess India Pvt. Ltd.
- Reichhold India Pvt. Ltd.
- Satyen Polymers Pvt. Ltd.
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