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The first list includes estimates compiled by the International Monetary Fund's World Economic Outlook, the second list shows the World Bank's data, and the third list includes data compiled by the United Nations Statistics Division. The IMF's definitive data for the past year and estimates for the current year are published twice a year in ...
It is also common to use blends of LDPE and LLDPE for optimal material properties in specific applications. In 2013, the world market for LLDPE reached a volume of $40 billion. [3] LLDPE that is manufactured by using metallocene catalysts is sometimes labeled as mLLDPE.
LDPE has SPI resin ID code 4 Schematic of LDPE branching structure. Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene.It was the first grade of polyethylene, produced in 1933 by John C. Swallow and M.W Perrin who were working for Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization. [1]
The list of countries by price level shows countries by their price level index. The data has been collected by the World Bank's International Comparison Program since the 1970s and has been available for almost all World Bank member states and some other territories since 1990. The Global price level, as reported by the World Bank, is a way to ...
Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane. [12] [a] [13] [b] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long −CH 2 − chains and termed it polymethylene.
In the early 21st century, there has been a global trend towards the phase-out of lightweight plastic bags. [ 1 ] [ 2 ] Single-use plastic shopping bags , commonly made from low-density polyethylene (LDPE) plastic [ 3 ] , [ 4 ] have traditionally been given for free to customers by stores when purchasing goods: the bags have long been ...
U.S. monthly consumer prices rose less than initially thought in December, but the overall inflation revisions were mixed, and did not shift expectations on the timing of an anticipated interest ...
HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]