Polymer alloys, morphology and materials for environmental remediation
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United States of America Patent
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Apr 1, 2003
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N/A
app pub date -
Apr 7, 1998
filing date -
Jan 10, 1997
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Abstract
A polymer alloy and method of making same comprising a block copolymer thermoplastic elastomer comprising a microscopic porosity rapidly plasticized by environmental contaminants and a binder of a polymer or copolymer, the binder binding block copolymer particles while preserving the microscopic porosity and providing a macroscopic porosity to allow fluid penetration. The block copolymer preferably comprises styrene-butadiene-styrene (SBS) triblock copolymer, styrene-butadiene (SB) diblock copolymer, or styrene-isoprene-styrene (SIS) triblock copolymer, or a combination thereof, and the binder preferably comprises styrene-ethylene-butadiene (SEB) terpolymer, ethylene-propylene-diene monomer (EPDM) terpolymer, ethylene-propylene (EPR) copolymer, or styrene-butene butadiene (SBB) terpolymer, or a combination thereof. Most preferably the block copolymer comprises styrene-butadiene-styrene (SBS) triblock copolymer and the binder comprises ethylene-propylene-diene monomer (EPDM) terpolymer.
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