单词 | polybutylene |
释义 | > as lemmaspolybutylene polybutylene n. Brit. /ˌpɒlɪˈbjuːtᵻliːn/ , /ˌpɒlɪˈbjuːtl̩iːn/ , U.S. /ˌpɑliˈbjudlˌin/ a polymer of butylene; esp. one that is a rigid thermoplastic material formerly used for water pipes.ΚΠ 1942 Industr. & Engin. Chem. Oct. 1197/2 The Kcm constant of 0.75 x 104 for polybutylenes dissolved in n-hexane (Skellysolve B) is considered to be a suitable selection, provided the molecular weight is 1000 or greater. 2002 Chem. Week (Nexis) 14 Aug. 12 Polybutylene was used extensively during the 1980s and early 1990s as a substitute for copper piping, but was found to become brittle and fail. < as lemmas |
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