Making a thin (>30pm) polypropylene coating by applying small polypropylene particles with zones of amorphous polypropylene containing entrapped moderate solvent and heating
US5075136A · kind A · utility
3Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1989 |
| Grant date | Dec 24, 1991 |
| Priority date | — |
| Expiry date | Dec 22, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D123/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the application of a thin crystalline polypropylene coating to a surface which employs partially crystalline polypropylene particles which comprise zones of amorphous polypropylene containing entrapped moderate solvent. When heated particles flow and coalesce better than conventional polypropylene particles and so allow thinner coatings to be obtained. Also articles to which the coatings have been applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.