Chap._300001 - Ethylene-vinyl alcohol copolymer (EVO...

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Chapter 3 Polyolefin 3.1 Scope and Definitions Polyolefins by far are the most important class of commercial polymers (> 50%) R' R CH 2 =C Polyolefins are prepared by unsaturated aliphatic hydrocarbon monomers containing one -double bond * Principle commercial polymers: y x x x x CH 3 CH 3 CH 2 =CH -(CH 2 -CH) - (1-butene, 1-hexene or 1-octene) R R CH 2 =CH 2 + -(CH 2 -CH 2 ) -(CH 2 -CH) - CH 2 =CH Linear low density polyethylene (LLDPE) Isotactic polypropylene (i-PP) CH 2 =CH 2 -(CH 2 -CH 2 ) - Low density polyethylene (LDPE) CH 2 =CH 2 -(CH 2 -CH 2 ) - High density polyethylene (HDPE) y x H O C=O O C=O O Ethylene-vinylacetate copolymer (EVA)
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Unformatted text preview: Ethylene-vinyl alcohol copolymer (EVO Polybutene CH 2 =CH -(CH 2-CH) -Poly(4-methyl-1-pentene) CH 2 =CH -(CH 2-CH) -CH 2 =CH 2 + -(CH 2-CH 2 ) -(CH 2-CH) - -(CH 2-CH 2 ) -(CH 2-CH) -CH 2 =CH x x x y CH 2 CH 3 CH 2 CH 3 CH 2 H-C-CH 3 CH 3 CH 2 H-C-CH 3 CH 3 CH 3 CH 3 Ionomers R: H, CH 3 + Na-C=O R R CH 2 =C CH 2 =CH 2 R H H Ethylene-acrylic acid copolymer (EAA) Ethylene-methacrylic acid copolymer (EMAA) y x O C=O O C=O O + -(CH 2-CH 2 ) -(CH 2-CH) - -(CH 2-CH 2 ) -(CH 2-CH) -x y...
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