Porous polymer structures and methods and articles relating thereto
US9376516B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jan 31, 2014 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Apr 15, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D4/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A porous polymer structure may be formed by cooling a substrate to a temperature at or below a freezing point of a monomer, wherein the monomer is capable of free-radical polymerization; exposing the substrate to an initiator and the monomer, each in a vapor phase, wherein a concentration of the monomer in the vapor phase is above a saturation pressure of the monomer; converting the initiator to a free radical; crystalizing and depositing the monomer on the substrate; and polymerizing at least some of the monomer on the substrate, thereby forming a porous polymer structure on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.