Processes for enhancing flame retardance and chemical resistance of polymers
US9963545B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jan 28, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Nov 7, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Processes for increasing the chemical resistance of a surface of a formed article are disclosed. The formed article is produced from a polymeric composition comprising a photoactive additive containing photoactive groups derived from a monofunctional benzophenone. The surface of the formed article is then exposed to ultraviolet light to cause crosslinking of the photoactive additive and produce a crosslinked surface. The crosslinking enhances the chemical resistance of the surface. Various means for controlling the depth of the crosslinking are also discussed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.