| http://www.w3.org/ns/prov#value | - Such initiators include, for example, peroxides such as benzoyl peroxide, cumene hydroperoxide, tertiary butyl peroxide, diisopropyl peroxy dicarbonate; and azo compounds such as 2,2'-azo-bis-isobutyronitrile, 2,2-azo-bis-2,4-dimethyl valeronitrile, 2,2'-azo-bis- 2,4-dibutyl valeronitrile and are preferably employed in an amount of from about 1 to percent by weight based on the total weight of the
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