Polymer alloys, morphology and materials for environmental remediation
US6541569B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1998 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Apr 7, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.