Method for preventing plasticizer bleeding on polyvinyl chloride shaped articles
US4247440A · kind A · utility
5Cited by
3References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 23, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Jul 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In the inventive method, shaped articles of a plasticized polyvinyl chloride resin are subjected to the surface treatment by with low temperature plasma so that the undesirable phenomenon of bleeding of the plasticizer on the surface can be effectively prevented when the plasticizer for plasticizing the resin is a compound having at least one aromatic nucleus in a molecule or a combination of two or more of plasticizers including 10% by weight or more of a plasticizer which is a compound having at least one aromatic nucleus in a molecule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.