| http://www.w3.org/ns/prov#value | - Preferred base web materials for preparing the hydrophilic, microfibrous, polymeric filter sheets of this type are hydrophobic, polymeric webs comprised of microfibers of polyolefins, polyesters or polyamides, including polypropylene, polyethylene, polybutylene terephthalate, polyethylene terephthalate, nylon 66, nylon 6, nylon 610 and nylon 11.
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