| http://www.w3.org/ns/prov#value | - High-molecular weight polyethylene is here taken to mean polyethylene that may contain minor amounts, preferably at most 5 molecules %, of one or more other alkenes copolymerized therewith, such as propylene, butylene, pentene, hexene, 4-methyl pentene, octene, etc., and with an average of less than one side chain per 100 carbon atoms, preferably with an average of less than 1 side chain per 300 c
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