The Full Wiki

Polyurethane: Quiz

Advertisements
  
  

Question 1: They take the form of polydimethylsiloxane-polyoxyalkylene block copolymers, ________ oils, nonylphenol ethoxylates, and other organic compounds.
CarbonOxygenSiliconeCopper

Question 2: The first commercially available polyether polyol, poly(tetramethylene ether) glycol, was introduced by ________ in 1956 by polymerizing tetrahydrofuran.
SunocoDuPontHSBC Bank USAComcast

Question 3: Polyurethane polymers are formed through step-growth polymerization by reacting a monomer containing at least two isocyanate functional groups with another monomer containing at least two hydroxyl (________) groups in the presence of a catalyst.
AlkaneAlcoholAldehydeEthanol

Question 4: The new monomer combination also circumvented existing patents obtained by ________ on polyesters.
Wallace CarothersElmer Keiser BoltonRichard R. SchrockKevlar

Question 5: Polyurethane catalysts can be classified into two broad categories, ________ compounds and organometallic complexes.
PyridineAlcoholAmineAmide

Question 6: Higher-energy ________ radiation promotes chemical reactions in foam, some of which are detrimental to the foam structure.
UltravioletX-rayVisible spectrumElectromagnetic spectrum

Question 7: The pioneering work on polyurethane polymers was conducted by Otto Bayer and his coworkers in ________ at the laboratories of I.G. Farben in Leverkusen, Germany.
1937197319711969

Question 8: Also during the 1960s, automotive interior safety components such as instrument and door panels were produced by back-filling ________ skins with semi-rigid foam.
PolymerPolystyreneThermoplasticPolyethylene terephthalate

Question 9: Since then, increasing energy prices and the desire to eliminate ________ plastisol from automotive applications have greatly increased market share.
PolystyrenePolyvinyl chloridePolycarbonatePlastic

Question 10: Polyurethanes, especially those made using ________ isocyanates, contain chromophores which interact with light.
Chemical bondCovalent bondConjugated systemAromaticity







Advertisements









Got something to say? Make a comment.
Your name
Your email address
Message