prov:value
| - Examples of these thickening agents are neoprene rubbers, butyl rubbers, styrene-butadiene rubbers, nitrile rubbers, ply(ethylene), poly( propylene), copolymers of ethylene and vinyl esters or ethers, poly (alkyl acrylates), poly(alkyl methacrylates), polyesters such as poly(ethylene maleate), poly(propylene fumarate), poly(propylene phthalate), and the like.
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