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stereoregular

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stereoregular
stereoregular, a. Chem. (stɛriːəʊ-, stɪəriːəʊˈrɛgjʊlə(r)) Also stereo-regular. [f. stereo- + regular a.] Of a polymer: having each substituent atom or group on the main polymer chain oriented in the same manner on the chain with respect to the neighbouring atoms or groups. Of a reaction: giving rise... Oxford English Dictionary
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stereoregulate
stereoregulate, v. Chem. (stɛriːəʊ-, stɪəriːəʊˈrɛgjʊleɪt) [f. stereo- + regulate v.] trans. To cause (a polymerization or its product) to be stereoregular. So ˌstereoˈregulated ppl. a., -ˈregulating vbl. n. and ppl. a.; ˌstereoreguˈlation.1959 Gaylord & Mark Linear & Stereoregular Addition Polymers ... Oxford English Dictionary
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Polyisoprene
History The first reported commercialisation of a stereoregular poly-1,4-isoprene with > 90% cis (90% to 92%) was in 1960 by the Shell Chemical Company wikipedia.org
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RhymeZone: regular rhymes
Words and phrases that rhyme with regular: (5 results) 3 syllables: tegular 4 syllables: irregular 5 syllables: extraregular 6 syllables: stereoregular 7 syllables: regular-irregular
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stereospecific
stereospecific, a. Chem. (ˌstɛriːəʊ-, ˌstɪəriːəʊspɪˈsɪfɪk) Also stereo-specific. [f. stereo- + specific a.] 1. a. Of a reaction: = stereoselective a. Also of a catalyst: causing a reaction to be (more) stereoselective.1949 Jrnl. Amer. Chem. Soc. LXXI. 3866/2 The reaction giving rise to the acetates ... Oxford English Dictionary
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Kaminsky catalyst
These innovations made possible highly stereoselective (or stereoregular) polymerization of α-olefins, some of which have been commercialized. wikipedia.org
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Coordination polymerization
Coordination type polymers are also stereoregular and can be isotactic or syndiotactic instead of just atactic. wikipedia.org
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syndiotactic
syndiotactic, a. Chem. (ˌsɪndaɪəʊˈtæktɪk) Also (more correctly) syndyo-. [f. Gr. σύνδυο two together + τακτ-ός arranged, ordered + -ic.] Having or designating a polymer structure in which the substituent groups alternate on either side of the backbone of the molecule.1956 Natta & Corradini in Jrnl. ... Oxford English Dictionary
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Radical polymerization
It is easier for the stereoregular polymers to pack into a crystal lattice since they are more ordered and the resulting crystallinity leads to higher The prime example of the industrial utility of stereoregular polymers is polypropene. wikipedia.org
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stereoblock
ˈstereoblock Chem. [ad. It. stereoblocchi (G. Natta et al. 1957, in Chim. e Industr. XXXIX. 276/2): see stereo- and block n.] A segment of a polymer chain possessing stereoregularity. Also attrib., as stereoblock polymer, a polymer the chains of which contain such segments.1957 Chem. Abstr. LI. 1253... Oxford English Dictionary
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Karl Ziegler
Highly crystalline and stereoregular polymers that previously could not be prepared became synthetically feasible. wikipedia.org
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Ziegler
Ziegler Chem. (ˈziːglə(r)) The name of Karl Ziegler (1898–1973), German chemist, used attrib. to designate a trialkyl aluminium-titanium tetrachloride catalyst discovered by him for the synthesis of stereoregular isotactic polymers of high density and crystallinity from an ethylene or propylene mono... Oxford English Dictionary
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Polymer engineering
Natta discovered a coordination polymerization catalyst and pioneered the era of synthesis of stereoregular polymers. wikipedia.org
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Olefin metathesis
The first asymmetric catalyst followed in 1993 With a Schrock catalyst modified with a BINOL ligand in a norbornadiene ROMP leading to highly stereoregular wikipedia.org
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poly-
poly- (pɒlɪ) repr. Gr. πολυ-, combining form of πολύς, πολύ, much, in pl., πολλοί, -αί, ά many, forming the first element in a large number of words, mostly scientific or technical. The second element of such compounds is properly of Greek origin, but in recent formations is often of Latin; occasion... Oxford English Dictionary
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