Zieglern.

Brit.

/ˈziːɡlə/, U.S.

/ˈziɡlər/,

/ˈzɪɡlər/

Etymology: < the name of Karl Ziegler (1898–1973), German chemist.

Chemistry.

Used attributively to designate a trialkyl aluminium-titanium tetrachloride catalyst discovered by Ziegler for the synthesis of stereoregular isotactic polymers of high density and crystallinity from an ethylene or propylene monomer; also, loosely, = Ziegler-Natta n.

ΘΚΠ

the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to that which affects reaction > of or relating to catalysis > of or relating to named catalysts

Ziegler1957

Ziegler-Natta1965

1957 Technology July 176/3 By the use of Ziegler catalysts..Goodrich-Gulf were able to synthesize from isoprene a polymer almost identical with natural rubber.

1961 Industr. Chemist Feb. 74/2 Although stereoregular polymers prepared with Ziegler-type catalysts are now of considerable commercial interest, research is continuing in attempts to obtain stereo-specific polymers by other, and perhaps less complex, catalysts.

1966 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. II. xxxiii. 560 This reaction is of interest in connexion with the polymerization of olefins by Ziegler catalysts.

1980 Nature 20 Mar. 213/3 [They] produced thin films by exposing acetylene gas to concentrated solutions of Ziegler catalysts.

This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022).

单词	ziegler
释义	Zieglern. Brit. /ˈziːɡlə/, U.S. /ˈziɡlər/, /ˈzɪɡlər/ Etymology: < the name of Karl Ziegler (1898–1973), German chemist. Chemistry. Used attributively to designate a trialkyl aluminium-titanium tetrachloride catalyst discovered by Ziegler for the synthesis of stereoregular isotactic polymers of high density and crystallinity from an ethylene or propylene monomer; also, loosely, = Ziegler-Natta n. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to that which affects reaction > of or relating to catalysis > of or relating to named catalysts Ziegler1957 Ziegler-Natta1965 1957 Technology July 176/3 By the use of Ziegler catalysts..Goodrich-Gulf were able to synthesize from isoprene a polymer almost identical with natural rubber. 1961 Industr. Chemist Feb. 74/2 Although stereoregular polymers prepared with Ziegler-type catalysts are now of considerable commercial interest, research is continuing in attempts to obtain stereo-specific polymers by other, and perhaps less complex, catalysts. 1966 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. II. xxxiii. 560 This reaction is of interest in connexion with the polymerization of olefins by Ziegler catalysts. 1980 Nature 20 Mar. 213/3 [They] produced thin films by exposing acetylene gas to concentrated solutions of Ziegler catalysts. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2022). < n.1957
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