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For example, it is soluble in various alcohols, such as methanol and ethanol, [30] as well as in more exotic solvents like the deep eutectic solvent formed by choline chloride and urea (Relin). [31] When dry it is a light flaky hygroscopic powder, readily absorbing up to 40% of its weight in atmospheric water. In solution, it has excellent ...
N-Vinylpyrrolidone (NVP) is an organic compound consisting of a 5-membered lactam ring linked to a (2 carbon) vinyl group. It is a colorless liquid although commercial samples can appear yellowish. It is produced industrially by vinylation of 2-pyrrolidone, i.e. the base-catalyzed reaction with acetylene. [2]
Poly(ethylene oxide) [9] Poly(vinyl alcohol) Poly(methyl methacrylate) Poly(caprolactone) Poly; Poly(vinyl pyrrolidone) Poly(vinyl chloride) Poly(vinylidene fluoride) Poly(imide) [8] Many of these polymers have other applications. The structures of several of these polymers are shown in the adjacent image. Showcases several of these polymers.
Spelling Bee Hints on Monday, December 11, 2023. Here are some hints to keep in mind for today: There are 32 words in today's puzzle. There are 136 points available
Vinyl polymers are subject of several structural variations, which greatly expands the range of polymers and their applications. With the exception of polyethylene, vinyl polymers can arise from head-to-tail linking of monomers, head-to-head combined with tail-to-tail, or a mixture of those two patterns. Additionally the substituted carbon center in such polymers is stereogenic (a "chiral center")
In the early 1970s, the carcinogenicity of vinyl chloride (usually called vinyl chloride monomer or VCM) was linked to cancers in workers in the polyvinyl chloride industry. Specifically workers in polymerization section of a B.F. Goodrich plant near Louisville, Kentucky , were diagnosed with liver angiosarcoma also known as hemangiosarcoma , a ...
The National Quiz Bee was also endorsed and assisted by various agencies of the Philippine government, including the Department of Education (DepEd), Commission on Higher Education (CHED), Department of the Interior and Local Government (DILG), the Senate of the Philippines, and the Office of the President.
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