Patent · US Expired

Multi-layer elements with polyvinyl alcohol overcoat suitable for the production of relief printing plates

US4469775A · kind A · utility

14Cited by

5References

18Claims

0Family size

Assignee

BASF SE

Inventors

John Lynch
Rudolf Vyvial · Ludwigshafen, DE
Manfred Zuerger
Klaus Borho · Mutterstadt, DE

Key dates

Filing date	Jul 16, 1982
Grant date	Sep 4, 1984
Priority date	—
Expiry date	Jul 16, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/11
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Multi-layer photopolymer elements, which are suitable for the production of relief printing plates and contain photosensitive polyvinyl alcohol/monomer layers which can be developed with water, can be improved in respect of their production, drying and shelf life by the application of a thin layer of a highly hydrolyzed low molecular weight polyvinyl alcohol.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.