which is commonly used as a solvent to manufacture plastic are other industrial products
Answers
Answer:
Explanation:
The global plastics demand is expected to reach 334.83 million tons by 2020, representing a market of USD 654.38 billion according to a new study by Grand View Research. Inc [1]. As of 2013, the global plastics demand was 233.75 million, thus the compound annual growth rate (CAGR) will be 5.3% from 2014 to 2020. If you’ve been checking out this site, you know that plastics materials have many advantages compared to metal and other materials such as light weight, ease of processing, more cost efficiency and more. There is no doubt that the plastics market will keep growing in the future. But there are potential sustainability concerns behind this promising market. One major worry is recycling; people have realized that the plastics can persist in the environment for hundreds of years and will cause serious environmental problems without proper disposal. Besides that, the use of a very large amount of solvents in plastics industries is another issue which is lesser known to the public.
The term “solvent” is applied to a vast number of different substances. They are defined as “substances that dissolve other substances to form a solution.” Solvents have found widespread use in plastics industries from the synthesis of raw materials to the end-use of products. For example, solution polymerization is a widely used technique to produce raw resins, which uses a solvent as the chemical reaction medium. A significant source of toxicity in polymer products occurs when solvents are used either as diluents or to enable of the application of the polymer (e.g., as a paint or adhesive). However, these applications make the use of toxic solvents an inescapable concern when we use plastics products. According to Zion Market Research [2], the global solvents market was valued at USD 26.80 billion in 2016 and is expected to reach USD 33.0 billion in 2022, growing at a CAGR of 4.0% between 2017 and 2022.
Figure 1. solvent demand by product, 2015
Figure 1. solvent demand by product, 2015
As shown in Figure 1 [3], In the US, alcohols such as ethanol, n-butanol, isopropanol and methanol are major solvents in use, followed by hydrocarbons, glycols, ketones and others. Among all end-uses, paints and coatings accounts for about 46% of the total use (see Figure 2 [4]). Most paints and coatings are polymer emulsions, which require the use of organic solvent. Growth in the construction and automotive industries also leads to increasing demand for paints and coatings. Other uses for solvents include pharmaceuticals, adhesives, inks, house care, chemical processing, metal and agriculture (some samples are given in Figure 3).
Figure 2: Solvent end use
Figure 2: Solvent end use
Answer:
ethylene nd propylene
Explanation:
Oil and natural gas are the major raw materials used to manufacture plastics. The plastics production process often begins by treating components of crude oil or natural gas in a "cracking process." This process results in the conversion of these components into hydrocarbon monomers such as ethylene and propylene.
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