Chemistry: electrical and wave energy – Processes and products
Patent
1985-04-10
1986-08-26
Andrews, R.
Chemistry: electrical and wave energy
Processes and products
204 351, 204 383, 204 58, 2041291, 428329, 428339, 428934, 430278, C25D 544
Patent
active
046081313
ABSTRACT:
In the process for the anodic oxidation of mechanically, chemically and/or electrochemically roughened aluminum or of one of its alloys, an aqueous electrolyte, which is free from H.sub.2 SO.sub.4 and contains H.sub.3 PO.sub.4 and Al.sup.+3 ions is used. The process parameters are: an electrolyte content of 25 g/l to 500 g/l of H.sub.3 PO.sub.4 and at least 5 g/l of Al.sup.+3 ions, a treatment time of 5 seconds to 500 seconds, a current density of 1 A/dm.sup.2 to 30 A/dm.sup.2 and a temperature of 35.degree. C. to 95.degree. C. The Al.sup.+3 ion source in particular is a salt of aluminum having a phosphoroxo anion, such as AlPO.sub.4. The material prepared in accordance with this invention is preferably employed as a support material for offset printing plates which carry a radiation-sensitive layer.
REFERENCES:
patent: 3511661 (1970-05-01), Rauner et al.
patent: 3594289 (1971-07-01), Watkinson et al.
patent: 3943039 (1976-03-01), Wittrock
patent: 4110147 (1978-08-01), Grunwald et al.
patent: 4211619 (1980-07-01), Usbeck
patent: 4229266 (1980-10-01), Usbeck
patent: 4277555 (1981-07-01), Fromson et al.
patent: 4396470 (1983-08-01), Atkinson
patent: 4409504 (1977-09-01), Chu et al.
Andrews R.
Hoechst Aktiengesellschaft
LandOfFree
Process for the anodic oxidation of aluminum and use thereof as does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the anodic oxidation of aluminum and use thereof as , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the anodic oxidation of aluminum and use thereof as will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2310963