prov:value
| - Substrates that may be employed for construction of devices that employ the acetylenic ureas or acetylenic complexes of this invention include paper, paperboard, fiberboard, cardboard, Kimdura, Mylar???, polyethylene, polypropylene, polyacrylate polymers and copolymers, cellulose ethers, cellulose esters, mixed esters or other similar materials.
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