Anionic polymerization processes

Details Anionic polymerization processes Anionic polymerization processes

1995-03-07

1996-10-08

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526328, 526173, 526180, 526181, 525271, 525309, C08F 416, C08F 446, C08F 458, C08F22010, C08F29702, C08F26506

Patent

active

055632750

ABSTRACT:
Disclosed herein is a process for anionic polymerization of selected methacrylate monomers at elevated (as high as about 100.degree. C.) temperatures, while maintaining good "living" characteristics, by carrying out the polymerization in the presence of a silicon compound and a large cation. Also disclosed is an improved process for the polymerization of vinyl monomers, including methacrylates, which process comprises the use of an anionic intiator which is a combination of an alkali metal hydride and an alkoxysilane or a combination of an alkali metal alkoxide and a silicon hydride.

REFERENCES:
patent: 4547476 (1985-10-01), Terano et al.
Haggard, R. A. et al, Progress in Organic Coatings, 12, 1-26 (1984).
Andrews, G. D. et al, New Monomers and Polymers, 357-380, Plenum Publishing Corp. (1984).
Ozaki, H. et al, Macromolecules, 25, 1391-1395 (1992).
Raj, D. J. A. et al, Macromolecules, 25, 2774-2776 (1992).
Reetz, M. T. et al, Agnew. Chem. Int., Ed. Engl., 27(10), 1373-1374 (1988).

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