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- Coordination_polymerization abstract "Coordination polymerisation is a form of addition polymerization in which monomer adds to a growing macromolecule through an organometallic active center. The development of this polymerization technique started in the 1950s with heterogeneous Ziegler-Natta catalysts based on titanium tetrachloride and an aluminium co-catalyst such as methylaluminoxane. Coordination polymerization has a great impact on the physical properties of vinyl polymers such as polyethylene and polypropylene compared to the same polymers prepared by other techniques such as free radical polymerization. The polymers tend to be linear and not branched and have much higher molar mass. Coordination type polymers are also stereoregular and can be isotactic or syndiotactic instead of just atactic. This tacticity introduces crystallinity in otherwise amorphous polymers. From these differences in polymerization type the distinction originates between low-density polyethylene (LDPE), high-density polyethylene (HDPE) or even ultra-high-molecular-weight polyethylene (UHMWPE). Polymerizations catalysed by metallocenes occur via the Cossee-Arlman mechanism. The active site is usually anionic but cationic coordination polymerization also exists. In many applications Ziegler-Natta polymerization is succeeded by metallocene catalysis polymerization. This method is based on homogeneous metallocene catalysts such as the Kaminsky catalyst discovered in the 1970s. The 1990s brought forward a new range of post-metallocene catalysts.Typical monomers are nonpolar ethylene and propylene. The development of coordination polymerization that enables copolymerization with polar monomers is more recent. Examples of monomers that can be incorporated are methyl vinyl ketones methyl acrylate and acrylonitrile.".
- Coordination_polymerization wikiPageID "2372519".
- Coordination_polymerization wikiPageLength "4034".
- Coordination_polymerization wikiPageOutDegree "44".
- Coordination_polymerization wikiPageRevisionID "692434674".
- Coordination_polymerization wikiPageWikiLink Acrylonitrile.
- Coordination_polymerization wikiPageWikiLink Aluminium.
- Coordination_polymerization wikiPageWikiLink Amorphous_solid.
- Coordination_polymerization wikiPageWikiLink Catalysis.
- Coordination_polymerization wikiPageWikiLink Category:Polymerization_reactions.
- Coordination_polymerization wikiPageWikiLink Chain-growth_polymerization.
- Coordination_polymerization wikiPageWikiLink Cossee–Arlman_mechanism.
- Coordination_polymerization wikiPageWikiLink Crystallinity.
- Coordination_polymerization wikiPageWikiLink Dipolar_bond.
- Coordination_polymerization wikiPageWikiLink Ethylene.
- Coordination_polymerization wikiPageWikiLink High-density_polyethylene.
- Coordination_polymerization wikiPageWikiLink Homogeneity_and_heterogeneity.
- Coordination_polymerization wikiPageWikiLink Kaminsky_catalyst.
- Coordination_polymerization wikiPageWikiLink Low-density_polyethylene.
- Coordination_polymerization wikiPageWikiLink Macromolecule.
- Coordination_polymerization wikiPageWikiLink Metallocene.
- Coordination_polymerization wikiPageWikiLink Methyl_acrylate.
- Coordination_polymerization wikiPageWikiLink Methyl_vinyl_ketone.
- Coordination_polymerization wikiPageWikiLink Methylaluminoxane.
- Coordination_polymerization wikiPageWikiLink Molar_mass.
- Coordination_polymerization wikiPageWikiLink Monomer.
- Coordination_polymerization wikiPageWikiLink Organometallic_chemistry.
- Coordination_polymerization wikiPageWikiLink Polyethylene.
- Coordination_polymerization wikiPageWikiLink Polymerization.
- Coordination_polymerization wikiPageWikiLink Polypropylene.
- Coordination_polymerization wikiPageWikiLink Post-metallocene_catalyst.
- Coordination_polymerization wikiPageWikiLink Propene.
- Coordination_polymerization wikiPageWikiLink Radical_polymerization.
- Coordination_polymerization wikiPageWikiLink Tacticity.
- Coordination_polymerization wikiPageWikiLink Titanium_tetrachloride.
- Coordination_polymerization wikiPageWikiLink Ultra-high-molecular-weight_polyethylene.
- Coordination_polymerization wikiPageWikiLink Vinyl_polymer.
- Coordination_polymerization wikiPageWikiLink Wiktionary:Homogeneous.
- Coordination_polymerization wikiPageWikiLink Ziegler–Natta_catalyst.
- Coordination_polymerization wikiPageWikiLinkText "Coordination polymerization".
- Coordination_polymerization wikiPageWikiLinkText "coordination polymerization".
- Coordination_polymerization wikiPageWikiLinkText "coordination".
- Coordination_polymerization wikiPageUsesTemplate Template:Reflist.
- Coordination_polymerization subject Category:Polymerization_reactions.
- Coordination_polymerization hypernym Form.
- Coordination_polymerization type Reaction.
- Coordination_polymerization comment "Coordination polymerisation is a form of addition polymerization in which monomer adds to a growing macromolecule through an organometallic active center. The development of this polymerization technique started in the 1950s with heterogeneous Ziegler-Natta catalysts based on titanium tetrachloride and an aluminium co-catalyst such as methylaluminoxane.".
- Coordination_polymerization label "Coordination polymerization".
- Coordination_polymerization sameAs Q3395663.
- Coordination_polymerization sameAs Polymérisation_coordinative.
- Coordination_polymerization sameAs m.0778cg.
- Coordination_polymerization sameAs Q3395663.
- Coordination_polymerization wasDerivedFrom Coordination_polymerization?oldid=692434674.
- Coordination_polymerization isPrimaryTopicOf Coordination_polymerization.