| http://www.w3.org/ns/prov#value | - It also may be advantageous when using catalysts which are active at relatively low temperatures, such as 30???-60??? C., to employ a second so-called chaser catalyst which is active at higher temperatures in order to achieve higher yields of crosslinked vinyl polymer, for example, from about 0.05 to 0.1%, based on monomer weight of such initiators as benzoyl peroxide, t-butyl peroctoate, t-buty
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