单词 | polyacetal |
释义 | > as lemmaspolyacetal polyacetal n. Brit. /ˌpɒlɪˈasᵻtal/ , U.S. /ˌpɑliˈæsədl/ , /ˌpɑliˈæsəˌtæl/ any of a class of polymers containing the repeating group —(O·CHR)—, which are prepared by addition polymerization of aldehydes and are typically strong thermoplastics used as moulding materials; spec. = polyoxymethylene n.ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > thermoplastic resins > other miscellaneous polyphenylene oxide1921 polyamide1929 polycarbonate1930 polyacetal1931 polypropylene1935 polymethyl methacrylate1936 polyethylene terephthalate1946 Dacron1951 polyacrylic1959 polyallomer1962 ionomer1964 parylene1965 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > plastic > capable of hardening after heating or (re)shaping > types of polystyrol1873 polyoxymethylene1908 polystyrene1927 polyvinyl chloride1930 polyacetal1931 polyformal1935 polypropylene1935 PVC1941 polyacrylic1959 phenoxy1962 polyallomer1962 ionomer1964 parylene1965 polypro1986 1931 Chem. Rev. 8 371 The reaction between glycols and acetaldehyde (or acetylene) presents the possibility of forming cyclic acetals..or polyacetals. 1992 RS Components: Electronic & Electr. Products July 940/2 The DFg series have separate coil/electronic assemblies with a free core fitted with a polyacetal homopolymer bearing. < as lemmas |
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