Control of molecular weight and end group functionality in polym

Details Control of molecular weight and end group functionality in polym Control of molecular weight and end group functionality in polym

1995-06-06

2000-03-07

Lipman, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitriles

560205, 568568, 526232, 5262325, C07C40900

Patent

active

060342633

ABSTRACT:
A process for the production of lower molecular weight polymers by free radical polymerization, characterized in that there is added to the polymerization system a compound of the general formula I ##STR1## wherein R.sup.1 is hydrogen, chlorine, an alkyl group, or a group capable of activating the vinylic carbon towards free radical addition;
R.sup.2 is hydrogen or an optionally substituted alkyl, alkenyl, aryl, cycloalkenyl or cycloalkyl group or the group --COZ, where Z is R.sup.3 or OR.sup.3, where R.sup.3 is hydrogen or an optionally substituted alkyl, alkenyl or aryl group.
X is a hydrogen atom, an alkyl or aryl group, or a halogen, and the two X groups may be the same or different.
The invention also includes polymers or oligomers made by the process and novel compounds of the generated formula I as defined above.

REFERENCES:
Waldemar Adam and Axel Griesbeck, Synthesis pp. 1050-1052, 1986.

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