Patent · US Expired

Waterborne photoresists made from urethane acrylates

US6207346A · kind A · utility

15Cited by
10References
35Claims
0Family size

Assignee

Inventor

Key dates

Filing dateApr 8, 1998
Grant dateMar 27, 2001
Priority date
Expiry dateApr 8, 2018

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03F7/027
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A waterborne photoimageable composition or photoresist comprises a latex binder polymer based on a waterborne dispersion of a photopolymerizable urethane acrylate oligomer having sufficient carboxylic acid functionality to render it develop able in alkaline aqueous solution and a photo initiator chemical system and other components to produce an aqueous coatable and alkali develop able photoresist composition.

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