Environmental wipe solvent processes
US6248403A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2000 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Jan 3, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/16
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A non-chrome process for the pretreatment of substrate surfaces to simultaneously clean them and improve their bonding strength for organic coatings such as adhesives, protective primers, sealants, paints, composites and similar materials conventionally bonded to such substrates, including non-chromated or chromated curable organic resin protective coatings applied directly to bare aluminum substrates. The invention involves the use of novel wipe solvent compositions containing a major volume of an environmentally-safe volatile organic solvent which has a low composite vapor pressure or is otherwise exempt from federal, state or local regulations, and a minor volume of a polyfunctional coupling agent, preferably of the silane type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.