Light-sensitive mixture and copying material produced therefrom
Patent
US-4275139-A
Inventor
STAHLHOFEN PAUL
Assignee
HOECHST AG
Country
United States
Dates
- Priority:1978/11/04
- Grant:1981/06/23
Description
This web page summarizes information in PubChem about patent US-4275139-A. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.
A positive-working light-sensitive copying material, in particular for the preparation of planographic printing plates, is described, the light-sensitive layer of which contains an ester or amide of a o-naphthoquinone diazide-sulfonic or -carboxylic acid, an alkali-soluble, water-insoluble phenolic resin and a condensation product of a hydroxybenzophenone and formaldehyde. The material is distinguished by an increased light-sensitivity.
1978/11/04
1979/11/01
1981/06/23
1981/06/23
STAHLHOFEN PAUL
HOECHST AG
United States
H01L21/027 (inventive)
G03F7/023 (inventive)
G03C1/72 (inventive, first)
G03F7/0236 (inventive, first)
Y10S522/904
Y10S430/127
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