Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Powder development of tacky surface
Patent
1983-07-19
1985-04-09
Louie, Won H.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Powder development of tacky surface
430172, G03C 158
Patent
active
045102260
ABSTRACT:
A photosensitive composition becoming sticky upon exposure to light which comprises (a) a salt of a diazonium compound represented by the formula ##STR1## wherein R.sub.1 and R.sub.2 are independently --H, --CH.sub.3, --OCH.sub.3 or ##STR2## but R.sub.1 and R.sub.2 cannot be ##STR3## at the same time; and R.sub.3 and R.sub.4 are independently a straight-chain lower alkyl group, and (b) a salt of an aromatic diazonium compound having no --OH group directly bonding to a benzene ring, has an improved sensitivity because it contains the salt of the compound represented by the above formula. By using said photosensitive composition, there is provided a process for forming a pattern of powder coated layer excellent in light sensitivity.
REFERENCES:
patent: 4377630 (1983-03-01), Morishita et al.
Akagi Motoo
Hayashi Nobuaki
Morishita Hajime
Nonogaki Saburo
Uchino Shoichi
Hitachi , Ltd.
Louie Won H.
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