Co-cured fluoroelastomers with improved chemical resistance
US11566090B2 · kind B2 · utility
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Key dates
| Filing date | Feb 19, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Nov 8, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Co-cured blends of fluoroelastomers of tetrafluoroethylene-propylene copolymer with cure site monomer and terpolymers of Vinylidene fluoride (VDF), Hexafluoropropylene (HFP) and Tetrafluoroethylene (TFE) with peroxide as initiator and coagent TAIC as crosslinker show improved curing performance, improved mechanical properties and improved compression set as well. The co-cured fluoroelastomers show improved chemical resistance to the solvent aging systems and better retention of mechanical properties after aging at high temperature in the solvents system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.