| http://www.w3.org/ns/prov#value | - Thus, natural and synthetic organic polymers or elastomers having an average molecular weight of at least 10,000, preferably at least 15,000 to 18,000, and most preferably at least 100,000, as determined by size exclusion chromatography or other suitable method, having the required reactivity and/or decomposition characteristics, may be employed.
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