polymethylenen.
/ˌpɒlɪˈmɛθᵻliːn/, U.S. /ˌpɑliˈmɛθəˌlin/ Chemistry.
Originally: any of the series of saturated cyclic hydrocarbons with the formula (CH2)n; = naphthene n. 2. Later: a compound, group, or polymeric structure which consists of or contains a chain of methylene groups, —(CH2)n—. Frequently attributive.
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the world > matter > chemistry > polymer chemistry > polymers (named others) > [noun] > others miscellaneous
polysulphide1849
indoline1884
polyacetylene1885
polymethylene1892
polysaccharide1892
polysaccharose1894
polyose1895
polymethacrylic acid1897
hydrol1900
polyphosphate1908
polyphenylene1921
polyacrylate1932
polyacrylonitrile1935
polyisocyanate1943
polyacrylamide1944
polysiloxane1944
polyglycolic acid1956
polynosic1959
anomalous water1966
polywater1969
1892 Jrnl. Chem. Soc. 62 1310 In this paper the author discusses the question of the identity of the naphthenes from Caucasus petroleum and the polymethylenes.
1910 N. V. Sidgwick Org. Chem. Nitrogen ii. 21 In the polymethylene derivatives the ring is often affected.
1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) i. 43 Russian petroleum..contains appreciable amounts of polymethylene hydrocarbons or naphthenes.
1930 Jrnl. Amer. Chem. Soc. 52 317 Those poly-esters in which the structural units contain polymethylene chains (CH2)x, in which x is greater than 3–5, show great solubility in benzene.
1953 R. J. W. Reynolds in R. Hill Fibres from Synthetic Polymers v. 98 Other addition reactions which can give rise to linear polymers are those involving the polymerisation of..diazomethane or diazoalkanes to give polymethylenes or their alkyl substituted products.
2001 Chemicals & Materials from Renewable Resources (ACS Symposium Ser. No. 784) xii. 149 Relatively minor changes in the substituents attached to the polymethylene chain drastically alter the physical properties of polyolefins.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1892