polymethyln.

Brit.

/ˌpɒlɪˈmiːθʌɪl/, U.S.

/ˌpɑliˈmɛθ(ə)l/; see also methyl n.

Origin: Formed within English, by compounding. Etymons: poly- comb. form, methyl n.

Etymology: < poly- comb. form + methyl n. Compare earlier monomethyl adj., dimethyl n., trimethyl n. and slightly earlier polymethacrylate n.

1. polymethyl acrylate n. (also polymethylacrylate) a resinous material obtained by polymerizing the methyl ester of acrylic acid.

ΘΚΠ

the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > others

Parkesine1862

succinite1868

linoxyn1876

polyanhydride1900

polyether1922

casein plastic1925

alkyd resin1928

polyolefin1930

acrylate1934

polymethyl acrylate1936

polyurethane1939

polytetrafluoroethylene1946

1936 Industr. & Engin. Chem. Oct. 269/2 Polymethyl acrylate is a colorless, transparent substance.

1950 Thorpe's Dict. Appl. Chem. (ed. 4) X. 107/1 Polymethyl acrylate is a tough, transparent, and colourless material, highly extensible, and to a limited degree rubber-like.

1973 Materials & Technol. VI. viii. 559 The softening point of polymethylmethacrylate lies accordingly about 90 degrees higher than that of polymethylacrylate.

1991 Proc. Royal Soc. A. 432 335 Diffusant–polymer system... Methylacetate–polymethylacrylate.

2. polymethyl methacrylate n. (also polymethylmethacrylate) a tough transparent plastic obtained by polymerizing methyl methacrylate and used as a glass substitute.Proprietary names for this material include Perspex n. and adj., Plexiglas n., Lucite 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

1936 Industr. & Engin. Chem. Oct. 270/1 Polymethyl methacrylate is a very hard, tough mass which can be sawed, carved, or worked on a lathe with ease.

1942 Endeavour 1 111/2 Cellulose acetate and polymethyl~methacrylate are fabricated into cockpit covers..for aircraft by this process.

1960 Times 2 Sept. 14/1 They could be eating sandwiches from polyethylene packs with polymethylmethacrylate dentures.

1965 C. Zigrosser & C. M. Gaehde Guide to Collecting Orig. Prints vii. 111 The most durable are the acrylic sheets, particularly Plexiglas (polymethyl methacrylate), which is produced in thicknesses from 1·5 to 25·0 mm.

1975 Sci. Amer. Dec. 96/2 Familiar thermoplastic polymers include polyethylene,..polymethyl methacrylate,..and nylon.

1998 New Scientist 19 Dec. 7/2 The blue-emitting polymer is built from polymethylmethacrylate, a plastic with semiconducting properties.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polymethyl
释义	polymethyln. Brit. /ˌpɒlɪˈmiːθʌɪl/, U.S. /ˌpɑliˈmɛθ(ə)l/; see also methyl n. Origin: Formed within English, by compounding. Etymons: poly- comb. form, methyl n. Etymology: < poly- comb. form + methyl n. Compare earlier monomethyl adj., dimethyl n., trimethyl n. and slightly earlier polymethacrylate n. 1. polymethyl acrylate n. (also polymethylacrylate) a resinous material obtained by polymerizing the methyl ester of acrylic acid. ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > others Parkesine1862 succinite1868 linoxyn1876 polyanhydride1900 polyether1922 casein plastic1925 alkyd resin1928 polyolefin1930 acrylate1934 polymethyl acrylate1936 polyurethane1939 polytetrafluoroethylene1946 1936 Industr. & Engin. Chem. Oct. 269/2 Polymethyl acrylate is a colorless, transparent substance. 1950 Thorpe's Dict. Appl. Chem. (ed. 4) X. 107/1 Polymethyl acrylate is a tough, transparent, and colourless material, highly extensible, and to a limited degree rubber-like. 1973 Materials & Technol. VI. viii. 559 The softening point of polymethylmethacrylate lies accordingly about 90 degrees higher than that of polymethylacrylate. 1991 Proc. Royal Soc. A. 432 335 Diffusant–polymer system... Methylacetate–polymethylacrylate. 2. polymethyl methacrylate n. (also polymethylmethacrylate) a tough transparent plastic obtained by polymerizing methyl methacrylate and used as a glass substitute.Proprietary names for this material include Perspex n. and adj., Plexiglas n., Lucite 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 1936 Industr. & Engin. Chem. Oct. 270/1 Polymethyl methacrylate is a very hard, tough mass which can be sawed, carved, or worked on a lathe with ease. 1942 Endeavour 1 111/2 Cellulose acetate and polymethyl~methacrylate are fabricated into cockpit covers..for aircraft by this process. 1960 Times 2 Sept. 14/1 They could be eating sandwiches from polyethylene packs with polymethylmethacrylate dentures. 1965 C. Zigrosser & C. M. Gaehde Guide to Collecting Orig. Prints vii. 111 The most durable are the acrylic sheets, particularly Plexiglas (polymethyl methacrylate), which is produced in thicknesses from 1·5 to 25·0 mm. 1975 Sci. Amer. Dec. 96/2 Familiar thermoplastic polymers include polyethylene,..polymethyl methacrylate,..and nylon. 1998 New Scientist 19 Dec. 7/2 The blue-emitting polymer is built from polymethylmethacrylate, a plastic with semiconducting properties. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1936
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