syndiotactic chain

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• syndiotactic — syndiotacticity /sin duy oh tak tis i tee, sin duy /, n. /sin duy oh tak tik, sin duy /, adj. Chem. (of a polymer molecule) having a regular alternation of opposite configurations at successive regularly spaced positions along the chain. Cf.… …   Universalium

• syndiotactic — /ˌsɪndioʊˈtæktɪk/ (say .sindeeoh taktik) adjective (of a polymer) having substituent groups or atoms located on alternating sides of the backbone of a polymer chain. {Greek syndyo two together + tactic} …  

• Ziegler–Natta catalyst — A Ziegler–Natta catalyst is a catalyst used in the synthesis of polymers of 1 alkenes (α olefins). Three types of Ziegler–Natta catalysts are currently employed: Solid and supported catalysts based on titanium compounds. They are used in… …   Wikipedia

• Tacticity — (from Greek taktikos : of or relating to arrangement or order) is the relative stereochemistry of adjacent chiral centers within a macromolecule [ Introduction to polymers R.J. Young ISBN 0412221705 ] . The practical significance of tacticity… …   Wikipedia

• Ziegler-Natta catalyst — A Ziegler Natta catalyst is a reagent or a mixture of reagents used in the production of polymers of 1 alkenes (α olefins). Ziegler Natta catalysts are typically based on titanium compounds and organometallic aluminium compounds, for example… …   Wikipedia

• Polystyrene — For other uses, see Polystyrene (disambiguation). Expanded polystyrene packaging …   Wikipedia

• industrial polymers, chemistry of — Introduction       structure and composition of chemical compounds made up of long, chainlike molecules (molecule).       What distinguishes polymers from other types of compounds is the extremely large size of the molecules. The size of a… …   Universalium

• catalysis — catalytic /kat l it ik/, adj., n. catalytical, adj. catalytically, adv. /keuh tal euh sis/, n., pl. catalyses / seez /. 1. Chem. the causing or accelerating of a chemical change by the addition of a catalyst. 2. an action between two or more… …   Universalium

• Polymer — Appearance of real linear polymer chains as recorded using an atomic force microscope on surface under liquid medium. Chain contour length for this polymer is 204 nm; thickness is 0.4 nm.[1] A polymer is a large molecule (macromolecule …   Wikipedia

• Polypropylene — Chembox new Name = Polypropylene ImageFile = Polypropylen.svg ImageSize = 100px ImageName = Polypropylene IUPACName = poly(propene) OtherNames = Polypropylene; Polypropene; Polipropene 25 [USAN] ;Propene polymers; Propylene polymers; 1 Propene… …   Wikipedia

• Branching (chemistry) — [http://www.pslc.ws/macrog/pc.htm] Branching may result from the formation of carbon carbon or various other types of covalent bonds. Branching by ester and amide bonds is typically by a condensation reaction, producing one molecule of water (or… …   Wikipedia