Process for producing hot melt release coating
US5525375A · kind A · utility
7Cited by
18References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2203/334
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A hot melt process for producing a release coating. The process involves first forming a mixture of a release agent and a thermoplastic polymer in the absence of a solvent. The release agent is not completely compatible with the thermoplastic polymer. The mixture has a softening temperature ranging from about 120.degree. to about 350.degree. F. The mixture is heated to a temperature at or above its softening temperature and then coated onto at least a portion of a substrate. The coated substrate is cooled for a time and at a temperature sufficient to cause the mixture to solidify.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.