Polypropylene synthesis

Figure 9 Metallocene structures for polypropylene synthesis. (From Ref. 2.)...

Figure 8 Metallocenes for iso-, syndic-, and stereoblock polypropylene synthesis.

Kinetics and Mechanism of Living Polypropylene Synthesis 4.1 Principal Kinetics... 

As mentioned in section 4.1, the kinetics of the living polypropylene synthesis have been interpreted in terms of a coordination polymerization mechanism represented by Eq. (22). We discuss here the mechanism of chain propagation on the basis of the structure and stereochemistry of the synthesized polypropylenes. 

Sathe, S. N., Srinivasa, N., Rao, G. S., and Devi, S. 1994. Grafting of maleic anhydride onto polypropylene Synthesis and characterization. Journal of Applied Polymer Science 53 239-245. 

Devrim, Y, Rzaev, Z. M. O., and Pi kin, E. 2004. Anhydrido-carboxylation of polypropylene Synthesis and characterization of poly(PP-g-MA), poly(PP-g-CA) and poly(PP-y-AA). 15th International Conference on Organic Synthesis, in Abstract. JUPAC ICOS-15, August 1-6, Nagoya, Japan, p. 3F-01. 

These results show that using catalyst 9a for polypropylene synthesis results in isotactic polypropylenes not in the manner of stereoblock polymers, but as iPPs with statistically distributed stereoerrors. 

Karmarkar, A. Aggarwal, R Modak, J. Chanda, M. Grafting of m-isopropenyl-a,a-dimethylbenzyl isocyanate onto isotactic polypropylene Synthesis and characterization. J. Polym. Mat. 2003, 20, 101-107. 

The further development of the catalysts used for polypropylene synthesis had far-reaching consequences for process development. Due to the development of new processes based on the possibilities offered by the new catalysts and the changing range of properties of polymers, the development of catalysts for polypropylene synthesis will be briefly described ... 

What combination of metal compounds are catalytically effective for isotatic polypropylene synthesis ... 

Tao G, Gong A et al (2001) Surface functioimljzed polypropylene synthesis, characterization, and adhesion properties. Macromolecules 34 7672 Tirrel M, Falsafi A et al (2001) Role of chain architecture in the adhesion of block copolymers. Macromole-cules 34 1323... 

---