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US 6,586,547 B1Granted
Low crystallinity vinylidene fluoride hexafluoropropylene copolymers
AssigneeAtofina Chemicals, Inc.
InventorsRamin Amin-Sanayei, Mehdi Durali
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Abstract
New and novel copolymers of vinylidene fluoride and hexafluoropropylene having lower or no crystallinity together with processes for their manufacture and use are disclosed.
Claims4
A vinylidene fluoride, hexafluoropropylene copolymer having from about 1 to about 66 weight percent hexafluoropropylene content and having low crystallinity, said copolymer having a DSC melting point defined by the relationship:
- Melt Temp. (° C.)=162.16−3.192(HFP wt %)
- when the copolymer has from 1 to 30 weight % hexafluoropropylene, said copolymer having an endotherm on melting defined by the relationship:
- ΔH=54.81−1.53(HFP wt %)
- when the copolymer has from greater than 30 up to less than 36 weight % hexafluoropropylene, and said copolymer having a ΔH of melting of zero when the copolymer has from 36 to 66 weight % hexafluoropropylene.
1 more element
Dependencies are inferred from the claim text.