UV stabilizer composition for surface modification of polymer articles
US5071592A · kind A · utility
0Cited by
25References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | May 24, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J7/065
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improvement in the process of incorporating a modifier ingredient into the surface region of a resinous article is described herein. The basic process includes immersing the article in a liquid such as water and contacting the immersed article with a solution of a modifier ingredient in a solvent which is immiscible with the liquid. The improvement herein comprises removing a substantial amount of air dissolved in the water layer to prevent droplets of solution from rising to the surface of the water layer during the process, thereby preventing solid modifier material from accumulating on the water surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.