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2. LP record - Wikipedia

   en.wikipedia.org/wiki/LP_record

   Released. 1948. The LP (from "long playing" [1] or "long play") is an analog sound storage medium, specifically a phonograph record format characterized by: a speed of 331⁄3 rpm; a 12- or 10-inch (30- or 25-cm) diameter; use of the "microgroove" groove specification; and a vinyl (a copolymer of vinyl chloride acetate) composition disk.

3. Vinyl group - Wikipedia

   en.wikipedia.org/wiki/Vinyl_group

   In organic chemistry, a vinyl group (abbr. Vi; [1] IUPAC name: ethenyl group [2]) is a functional group with the formula −CH=CH2. It is the ethylene (IUPAC name: ethene) molecule ( H2C=CH2) with one fewer hydrogen atom. The name is also used for any compound containing that group, namely R−CH=CH2 where R is any other group of atoms.

4. Twelve-inch single - Wikipedia

   en.wikipedia.org/wiki/Twelve-inch_single

   A twelve-inch Capitol Records gramophone record. The twelve-inch single (often written as 12-inch or 12″) is a type of vinyl (polyvinyl chloride or PVC) gramophone record that has wider groove spacing and shorter playing time with a "single" or a few related sound tracks on each surface, compared to LPs (long play) which have several songs on each side.

5. Polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_chloride

   Polyvinyl chloride (alternatively: poly (vinyl chloride), [6] [7] colloquial: vinyl [8] or polyvinyl; abbreviated: PVC [8]) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene ). About 40 million tons of PVC are produced each year.

6. Ethylene-vinyl acetate - Wikipedia

   en.wikipedia.org/wiki/Ethylene-vinyl_acetate

   Ethylene-vinyl acetate ( EVA ), also known as poly (ethylene-vinyl acetate) ( PEVA ), is a copolymer of ethylene and vinyl acetate. The weight percent of vinyl acetate usually varies from 10 to 50%, with the remainder being ethylene. There are three different types of EVA copolymer, which differ in the vinyl acetate (VA) content and the way the ...

7. Vinyl composition tile - Wikipedia

   en.wikipedia.org/wiki/Vinyl_composition_tile

   Vinyl floor tiling. Vinyl composition tile (VCT) is a finished flooring material used primarily in commercial and institutional applications. Modern vinyl floor tiles and sheet flooring and versions of those products sold since the early 1980s are composed of colored polyvinyl chloride (PVC) chips formed into solid sheets of varying thicknesses (1 ⁄ 8 in or 3.2 mm is most common) by heat and ...