Keii, Tominaga; Soga, Kazuo's Catalytic polymerization of olefins: proceedings of the PDF

By Keii, Tominaga; Soga, Kazuo

ISBN-10: 0444418016

ISBN-13: 9780444418012

ISBN-10: 0444995188

ISBN-13: 9780444995186

ISBN-10: 4062022656

ISBN-13: 9784062022651

In July 1988, a global Catalysis Seminar used to be held to mark the thirtieth anniversary of the Catalysis Society of Japan. After the ninth overseas Congress on Catalysis in Calgary, approximately 25 eastern researchers engaged on catalysis visited and held seminars in 4 nations. each one seminar curious about a selected topic, but additionally lined quite a lot of subject matters in catalysis, from the elemental to the economic levels. This quantity, containing the lawsuits of this certain occasion, displays the winning approach during which the seminars supplied a chance for direct verbal exchange and dialogue of the way most sensible to accomplish the profitable layout of catalysts.

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Extra resources for Catalytic polymerization of olefins: proceedings of the International Symposium on Future Aspects of Olefin Polymerization, Tokyo, Japan, 4-6 July 1985

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G. Natta, J . Polymer. S c i . 31. H. H. 32. H. Hoberg, 2,21 (1959) - R e i c h e r t , Angew. Makromol. Chem. 57, 211 (1977) H. Martin, R. stoff-Chemie 50, 217 (1969) Rienacker, K. Zosel, K. , Waki-cho, Kuga-gun, Yamaguchi-ken, 740, Japan ABSTRACT The role of ethyl benzoate (EB) in a highly active and highly stereospecific MgC12/TiC14-A1Et /EB catalyst system for propylene 3 polymerization was investigated. It was found that suitable amounts o f EB increased the yield o f isotactic polymers, at the same time decreasing very sharply the yield of atactic polymers and consequently enhancing stereospecificity.

Mg,Ti-catalyst The d e s c r i b e d e l ~ e w h e r e ~ -was ~ ) coated w i t h a f u r t h e r t r a n s i - t i o n metal component. How t h e morphology o f t h e Mg,Ti c a t a l y s t i s changed can be v i s i b i l i z e d by Scanning E l e c t r o n Microscopy as shown i n F i g u r e 5. Figure 5. 000; mag- Mg,Ti - c a t a l y s t ( 1 e f t s i d e ) ; Coated Mg ,Ti -ca- t a l y s t ( r i g h t side). T h i s c a t a l y s t was used f o r e t h y l e n e p o l y m e r i z a t i o n under t h e f o l l o wing experimental c o n d i t i o n s : A r e a c t o r was f i l l e d w i t h d i e s e l o i l a t 85 "C (100 dm3), t h e c o c a t a l y s t ( i n t h i s case i s ~ p r e n y l - a l u m i n i u m ~ ~360 ); mmol) was added, t h e n t h e c a t a l y s t (10 mmol Ti-compound) was i n t r o d u c e d .

N. Hinshelwood, SOC. 35, 130 (1939) 11,621 (1921) K i n e t i c s o f Chemical Change, Oxford U n i v e r s i t y Press, New York, 1940 19. H. Wesslau, Makromol. Chem. 20, 111 (1956) 20. H. 21. M. -J. Tung, J. Polym. S c i . 20, 495 (1956) Roe, Polymer 2, 41 (1961) Roe, Polymer 2, 60 (1961) 22. -J. 23. M. F l e i s s n e r , Angew. Makromol. Chem. 94, 197 (1981) 24. W. 25. D. P. 26. R. 27. R. L. H i g g i n s , J. Polym. R. S t r e e t , AICHEJ. N. J. M. Sketchley, J . Appl. Polym. L. 28. 29. BGhm et al.

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Catalytic polymerization of olefins: proceedings of the International Symposium on Future Aspects of Olefin Polymerization, Tokyo, Japan, 4-6 July 1985 by Keii, Tominaga; Soga, Kazuo


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