Plastic protective composition and process for use thereof
US9556344B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Jul 28, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D191/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for protecting a plastic substrate from ultraviolet electromagnetic radiation is provided that includes the application of a composition to the plastic substrate containing between 0.01 and 10 total weight percent of a UV absorber in a non-polymerizing oil present in an amount of greater than 50 total weight percent. The oil is allowed to form a protective layer on the plastic substrate and having said UV absorber dispersed therethrough. The composition is provided including other additives and a volatile organic solvent. The oil and additives are chosen to not produce a colored byproduct as observed by an unaided normal human eye. Compositions are also provided that are limited to the aforementioned components of a UV absorber, an oil, with or without an organic solvent and limited additive to preclude staining of the plastic substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.