单词 | polyvinyl |
释义 | polyvinyln. I. Compounds. 1. Chemistry. In the names of substances which are polymers of compounds containing a vinyl group —CH=CH2. All these often occur as single words. a. polyvinyl alcohol n. any of a series of polymers consisting wholly or largely of the repeating unit —CH2—CHOH—, prepared by hydrolysis of polyvinyl esters and used as emulsifiers, adhesives, coatings, films, fibres, etc.; abbreviated PVA. ΘΚΠ society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > other polymers polyethylene alcohol1862 polyethylene glycol1886 polyglycol1889 polyanhydride1900 latex1912 polyether1922 polyvinyl alcohol1927 polyamide1929 polycarbonate1930 polyethylene oxide1930 polyacrylonitrile1935 bouncing putty1944 polyvinyl pyrrolidone1945 povidone1955 fibrid1960 the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > polyvinyls > named polyvinyl acetate1927 polyvinyl alcohol1927 polyvinyl acetal1933 vinyl resin1934 polyvinylidene chloride1940 polyvinyl butyral1941 polyvinylidene1941 polyvinyl pyrrolidone1945 povidone1955 1927 Brit. Chem. Abstr. A. 1051/2 Hydrolysis of polyvinyl acetate yields polyvinyl alcohol which resembles starch in its insolubility in organic media. 1971 D. Potter Brit. Elizabethan Stamps vi. 68 A synthetic adhesive was invented. Completely non-toxic, colourless, odourless and tasteless, it is known as Polyvinyl Alcohol, and familiarly named pva by philatelists. 1992 Chem. in Brit. (BNC) 28 242 These artificial tear solutions are based on viscous polymers, most commonly containing methyl cellulose, hydroxypropylmethyl cellulose or polyvinyl alcohol. b. polyvinyl acetate n. a fairly soft plastic in which the repeating unit is the group —CH2—CH(OCOCH3)—, made by polymerizing vinyl acetate and used chiefly in paints and adhesives; abbreviated PVA. ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > polyvinyls > named polyvinyl acetate1927 polyvinyl alcohol1927 polyvinyl acetal1933 vinyl resin1934 polyvinylidene chloride1940 polyvinyl butyral1941 polyvinylidene1941 polyvinyl pyrrolidone1945 povidone1955 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > plastic > other plastics hard plastic1896 Galalith1901 Paxolin1918 casein plastic1925 polyvinyl acetate1927 protein plastic1928 Mipolam1936 acrylic1940 styrene plastic1943 bioplastic1946 ABS1957 Noryl1966 1927 Brit. Chem. Abstr. A. 1051/2 Hydrolysis of polyvinyl acetate yields polyvinyl alcohol which resembles starch in its insolubility in organic media. 1958 W. M. Smith Vinyl Resins i. 19 Polyvinyl acetate emulsions as a replacement for conventional grain starch are stated to withstand as many as 15 launderings. 1967 W. Gaunt Compan. Painting ii. 85 Some modern artists have..found congenial qualities in such synthetic paints as ripolin and polyvinyl acetate. 1972 Homes & Gardens Mar. 106/2 In their infancy, emulsion paints were regarded with some suspicion, partly because early ones, based on a polyvinylacetate (pva) medium, tended to become brittle and flake off. 2002 New Scientist 16 Nov. 19/3 Their enzymes..work by catalysing a reaction that breaks the chemical bonds in adhesives such as polyvinylacetates. c. polyvinyl chloride n. any of various thermoplastic polymers in which the repeating unit is the group —CH2—CHCl—, made by polymerizing vinyl chloride and produced in a wide variety of rigid and plasticized forms characterized esp. by their toughness, chemical inertness, and electrical resistivity; abbreviated PVC. ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > thermoplastic resins > PVC polyvinyl chloride1930 PVC1941 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 1930 Chem. Rev. 7 79 This is very close in size to the ring for rubber postulated by Ostromislenski from his study of polyvinyl chloride and bromide. 1958 Engineering 7 Mar. 294/2 The folding top is in leather-cloth, coated with polyvinyl chloride. 1976 Nature 3 June 409/1 Each trough held 50 oysters on a false bottom consisting of polyethylene grids resting on polyvinylchloride pipe. 2003 Vanity Fair (N.Y.) Dec. 208/2 Not an easy effect to pull off in the medium of injection-molded polyvinyl chloride. d. polyvinyl acetal n. any of a class of synthetic resins prepared by condensing polyvinyl alcohol with an aldehyde, sometimes spec. acetaldehyde (ethanal), and mainly used in safety glass and in lacquers and paints; cf. polyvinyl butyral n. at sense 1e. ΘΚΠ society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [adjective] > type of synthetic resin polyvinyl acetal1933 the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > polyvinyls > named polyvinyl acetate1927 polyvinyl alcohol1927 polyvinyl acetal1933 vinyl resin1934 polyvinylidene chloride1940 polyvinyl butyral1941 polyvinylidene1941 polyvinyl pyrrolidone1945 povidone1955 1933 Industr. & Engin. Chem. Feb. 129/1 The structure of polyvinyl acetal. 1944 Electronic Engin. 17 35/1 A skilful combination of a polyvinyl acetal resin..with a thermo-setting phenolic resin has enabled ‘Thermex’ enamel to be produced from wholly synthetic sources. 1973 Materials & Technol. VI. viii. 552 The next important consumer of polyvinyl acetals is the lacquer and paint industry (for wash-primers). 1999 Polymer Engin. & Sci. (Nexis) 39 862 (title) Solvent-free generation of polyvinyl acetals directly from polyvinyl acetate. e. polyvinyl butyral n. a polyvinyl acetal prepared from butyraldehyde. ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > polyvinyls > named polyvinyl acetate1927 polyvinyl alcohol1927 polyvinyl acetal1933 vinyl resin1934 polyvinylidene chloride1940 polyvinyl butyral1941 polyvinylidene1941 polyvinyl pyrrolidone1945 povidone1955 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > synthetic resin > specific synthetic resins coumarone resin1900 novolak1909 glyptal1915 marblette1927 Vinylite1929 polyolefin1930 polysulphone1934 urea resin1937 melamine resin1939 polyurethane1939 polyvinylidene chloride1940 polyvinyl butyral1941 polyimide1945 Teflon1945 Araldite1946 polytetrafluoroethylene1946 epoxy resin1950 urethane1956 Maraglas1962 tartan1964 alkyd1984 1941 Industr. & Engin. Chem. Dec. 1553/2 Polyvinyl butyral resin. 1973 Materials & Technol. VI. viii. 552 The use of polyvinyl butyral for making safety glass was patented in 1938 and this has since become one of the most important applications, certainly in America. 1992 Public Wks. Jan. 39/2 It was grit blasted and shop coated with one coat of zinc chromate polyvinylbutyral wash primer plus three coats of zinc phosphate epoxy primer. f. polyvinyl pyrrolidone n. a water-soluble polymer of vinyl pyrrolidone which has many applications, esp. in solution, e.g. as a synthetic blood plasma substitute, as a thickening, suspending, or binding agent in the cosmetic, drug, and food-processing industries, and in fibres and films; abbreviated PVP. ΘΚΠ the world > health and disease > healing > medicines or physic > medical preparations of specific origin > general chemical medicines > [noun] sulphurc1400 crystals of tartar1605 cremor of tartar1656 cream of tartar1662 polychrest1728 neutral1770 sulphuret1789 arsenical1818 gallo-nitrate1841 glonoin1860 hepar1866 tabloid1884 Nujol1916 pentaerythritol tetranitrate1923 polyvinyl pyrrolidone1945 povidone1955 bromocriptine1974 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > other polymers polyethylene alcohol1862 polyethylene glycol1886 polyglycol1889 polyanhydride1900 latex1912 polyether1922 polyvinyl alcohol1927 polyamide1929 polycarbonate1930 polyethylene oxide1930 polyacrylonitrile1935 bouncing putty1944 polyvinyl pyrrolidone1945 povidone1955 fibrid1960 the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > polyvinyls > named polyvinyl acetate1927 polyvinyl alcohol1927 polyvinyl acetal1933 vinyl resin1934 polyvinylidene chloride1940 polyvinyl butyral1941 polyvinylidene1941 polyvinyl pyrrolidone1945 povidone1955 1945 Chem. Abstr. 39 5408 Such solns. [i.e. blood plasma substitutes] are prepared by adding polyvinylpyrrolidone..to a physiol. salt soln. 1957 Financial Times Ann. Rev. Brit. Industry 86/3 Experiments have shown that polyvinyl pyrrolidone..used as a blood thickener can be readily broken down..to..the most useful molecular size for medical use. 2002 R. Y. Lochhead & C. M. Boykin in R. Krishnamoorti & R. A. Vaia Polymer Nanocomposites viii. 87 Bilayers and trilayers of polyvinylpyrrolidone can be intercalated into the clay. 2. attributive. Denoting plastics, synthetic resins, etc., made by polymerizing compounds containing a vinyl group —CH=CH2; consisting or made of such a material. ΘΚΠ society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [adjective] > type of synthetic resin or plastic urea-formaldehyde1928 polyvinyl1933 1933 Industr. & Engin. Chem. Feb. 129/1 To render the normal polyvinyl resin more water-resistant, it is converted partly or wholly to the acetal by reaction with an aldehyde, usually formaldehyde or acetaldehyde. 1940 ‘Plastes’ Plastics in Industry ii. 15 More recently polyvinyl plastics have been employed as floorcloth, long-playing phonograph records, [etc.]. 1966 Punch 26 Jan. 116/3 Palpitations on finding sleek strangers at the front door in answer to my inquiry about polyvinyl tiling. 1969 R. Mayer Dict. Art Terms & Techniques 422/2 Few of the vinyl products are practicable for use in artists' materials... One exception is a polyvinyl isolating varnish containing isopropyl alcohol that thins with alcohol. 1995 Midwest Living Apr. 170/1 (advt.) The same white rail polyvinyl fence that became so popular with horse owners everywhere is available today in more than 20 distinctive residential styles. 2003 Independent 30 Apr. (Review section) 21/4 Fashanu was forced into..an unflattering pair of polyvinyl bloomers with capacious gussets. II. Simple uses. 3. A polyvinyl plastic, resin, or other material. ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > polyvinyls polyvinyl1937 vinyl1939 1937 Brit. Plastics 9 172/1 Vinyl esters of both inorganic and organic acids are well known..raw materials for conversion to polyvinyls. 1946 Nature 16 Nov. 689/2 The use of methacrylate esters and the various polyvinyls is increasing in these fields [sc. arts and crafts]. 1958 Times Rev. Industry June 60/3 Polyvinyl and its copolymers provided the main advance throughout the industry. 2004 San Antonio (Texas) Express-News (Nexis) 2 May 3 j Gerardo Azcunaga's hulking, black ‘Beast’ is made out of concrete covered with strands of polyvinyl. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < |
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