Initiating process and system for the anionic polymerisation of

Details Initiating process and system for the anionic polymerisation of Initiating process and system for the anionic polymerisation of

1995-06-07

1998-03-03

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526175, C08F12018, C08F 456

Patent

active

057235597

ABSTRACT:
This invention relates to an initiating system for the anionic polymerization of acrylic monomers, and where necessary vinyl comonomers, including at least one R-M initiator in which M is a metal chosen from among the alkali and alkaline earth metals and R is a linear or branched chain alkyl, aryl, or arylalkyl radical. The polymerization may also take place in the presence of at least one R.sub.1 OM.sub.1 alkali metal alcoholate, in which R is an linear or branched chain alkyl, aryl, or arylalkyl radical and M.sub.1 is an alkali metal, on the condition that when M.sub.1 is lithium, then R is an aryl or arylalkyl radical. This invention also related to a process for the polymerization of primary, secondary, or tertiary alkyl acrylates, and possibly of vinyl comonomers, in the presence of the initiating system described above.

REFERENCES:
patent: 3285894 (1966-11-01), Lim et al.
Wiles, D.M. et al., "The Butyllithium-Initiated Polymerization of Methyl-methyacrylate. III. Effects of Lithium Alkoxides," Journal of Physical Chemistry, vol. 68, No. 7, Jul. 1964, pp. 1983-1987.

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