Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1972-12-07
1978-02-07
Newsome, John H.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
204165, 204168, 427 40, B05D 306
Patent
active
040727696
ABSTRACT:
The surface characteristics of polymeric materials are altered by exposure to a reactive gas which has been activated by radio frequency electromagnetic radiations prior to being directed onto the surface. The reactive gas is selected from either the gases which occur naturally with 3-electron bonds, (e.g., NO, NO.sub.2, etc,) or from other gases capable of decomposition in the presence of an electromagnetic field to form (1) activated species which attack the polymer surface to break carbon-hydrogen bonds, forming free radical sites, and (2) free radicals which react with these sites. The process can also be practiced using separate activator and reactive gases, and when the reactive gas selected comprises organic material, the gas stream used to treat the polymeric surface is supplemented by an activator gas comprising the noble gases and nitrogen. The process can be used to change polymeric surface wettability to water or oil, to render polymer films capable of being coated directly with gelatin-containing photosensitive layers with resultant satisfactory adhesion characteristics, etc.
REFERENCES:
patent: 2257177 (1941-09-01), Luster
patent: 2648097 (1953-08-01), Kritchever
patent: 2845541 (1958-07-01), Berry et al.
patent: 2910723 (1959-11-01), Travel
patent: 3148020 (1964-09-01), Graham
patent: 3255099 (1966-06-01), Wolinski
patent: 3274090 (1966-09-01), Amborski
patent: 3274091 (1966-09-01), Amborski
patent: 3275540 (1966-09-01), McBride
patent: 3493416 (1970-02-01), Hansen et al.
patent: 3526583 (1970-09-01), Hayward
patent: 3600122 (1966-07-01), Coleman
Dahl T. N.
Eastman Kodak Company
Newsome John H.
LandOfFree
Treating polymeric surfaces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Treating polymeric surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treating polymeric surfaces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1401189