Allyl peroxyketal chain transfer agents
AssigneeAkzo N.V.
InventorsLuc L. T. Vertommen, John Meijer, Bernard J. Maillard
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Abstract
Novel unsaturated peroxyketals useful as molecular weight regulators in polymerization reactions are disclosed. Also disclosed are a polymerization process employing these novel unsaturated peroxyketals as molecular weight regulators, polymers and oligomers made by this process and articles of manufacture comprising one or more polymers or oligomers made by this process. These molecular weight regulating peroxyketals provide the ability to introduce an epoxy functionality to the oligomer or polymer as well as an additional functionality, in a manner which gives a higher monomer conversion and less by-products than with comparable chain transfer regulators.
Claims7
Peroxides useful as chain transfer agents in radical (co)polymerization of monomers characterized in that said peroxides are represented by the following formula:
- ##STR11## wherein R.sub.1 and R.sub.2 are independently selected from hydrogen, lower alkyl, alkenyl and aryl, or R.sub.1 and R.sub.2 may combine to form a C.sub.5 -C.sub.7 aliphatic ring:
- R.sub.3 is represented by the formula V:
- ##STR12## wherein R.sub.4, R.sub.5 and R.sub.6 are independently selected from optionally substituted lower alkyl, alkenyl aryl and hydrogen, whereby R.sub.4 and R.sub.5 cannot be hydrogen together, or any two of R.sub.4, R.sub.5 and R.sub.6 may combine to form a ring;
- and X is an activating group capable of enhancing the reactivity of the olefinic group towards free radical addition, and together with R.sub.1 or R.sub.2, may combine to form an aliphatic ring.
Dependencies are inferred from the claim text.