Production of polyolefin shaped product
US4563316A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1983 |
| Grant date | Jan 7, 1986 |
| Priority date | — |
| Expiry date | Oct 7, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for enhancing the adhesion of the surface of a polyolefin shaped product which comprises applying corona discharge the said surface under the continuous movement between an electrode for discharge and another electrode opposite thereto while jetting a gaseous material other than the air itself onto the part of the said surface to which corona discharge is applied so as to achieve the following relationships among the carbon atoms, the nitrogen atoms and the oxygen atoms present within 100 .ANG. from the said surface: PA0 (a) -3.5.ltoreq.([O]/[C]-[O']/[C'])/([N]/[C]-[N']/[C']).ltoreq.1.8 PA0 (b) 3.0.ltoreq.[N']/[C'] wherein [C], [N] and [O] are respectively the numbers of the carbon atoms, the nitrogen atoms and the oxygen atoms within 100 .ANG. from the said surface before the application and [C'], [N'] and [O'] are respectively the numbers of the carbon atoms, the nitrogen atoms and the oxygen atoms within 100 .ANG. from the said surface after the application, the number of the carbon atoms being always taken as 100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.