Answered: Crud Chemicals is producing a casting…

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter23: Carbon: Not Just Another Element

Section: Chapter Questions

Problem 120SCQ

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Crud Chemicals is producing a casting resin that can be made using either (i) AA and BB monomers or (ii) an AB-type monomer {A & B represent different functional groups, like alcohol and carboxylic acids). A catalyst is added to promote polymerization in the mold. The material has many useful properties, but is deficient in heat and solvent resistance. A proposal is made to improve heat and solvent resistance by adding a tetrafunctional monomer (A4) to the mix to provide crosslinks. Unfortunately, no one in-house knows if this will work, or if the added A4 will form a gel, so they call you in as a consultant. Evaluate their idea to use A4 as a crosslinking agent for both types of polymerizations (i and ii).

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

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