Method of forming a thin electroconductive film
US5266244A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 30, 1992 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Jun 30, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A thin electroconductive film is formed by irradiating a shaped article of chlorinated vinyl polymer with a pulsive light having a pulse duration of not greater than 100 nsec., a fluence of above about 15 mJ/cm.sup.2 /pulse and below that at which the polymer is subject to ablation, a laser wavelength of from about 190 to about 300 nm, and repetition frequency of above about 1 Hz and below that at which the polymer is subject to deformation and/or decomposition by a regenerative function of irradiation, under vacuum or in an oxygen-free atmosphere, thereby irradiating the article with total photon numbers of at least 1.times.10.sup.18 /cm.sup.2 without causing photocrosslinking, oxidation or cleavage of the backbone chain. The invention does not use materials other than the starting polymer such as solvents or strong bases that can contaminate the thin film during a dehydrochlorination, so there is no need to remove solvents after reaction and no residual salts will be formed in the dehydrochlorination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.