Inhibition of paint-product skin formation on the interior surface of a paint vessel lid
US4228893A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1979 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | Apr 2, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/46
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a method to inhibit the formation of a paint-product skin on the interior surface of the lid of a closed upright vessel housing a paint composition wherein a portion of said composition is volatile. The method comprises delivering said paint composition to an upright, open vessel closeable at its top with a lid; delivering a sufficient quantity of a barrier material to the open vessel to provide a covering layer of the barrier material for the top of the paint composition; and closing the open vessel at its top with a lid. The barrier material is characterized as (1) less dense than the paint composition; (2) containing a volatile portion whose volatility is at least substantially equivalent to the volatility of the volatile portion of the paint composition; and (3) sufficiently compatible with the paint composition to become a mixed non-detrimental component thereof upon adequate mixing therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.