Photopolymerizable materials capable of being developed by a weak alkaline aqueous solution
US4629680A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Jan 28, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/111
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A photopolymerizable composition is described, comprising an addition polymerizable unsaturated compound having at least two ethylenically unsaturated double bonds in the molecule, a photopolymerzation initiator, and a binder, said binder being a copolymer composed of at least one recurring unit of group (A), at least one recurring unit of group (B), and at least can recurring unit of group (C), and having a weight average molecular weight of 5,000 to 5,000,000, wherein PA0 (A) is a methacrylate or benzyl methacrylate unit having a glass transition point of the homopolymer of higher than 50.degree. C. and having an alkyl group having from 3 to 10 carbon atoms, PA0 (B) is an acrylate unit having a glass transition point of the homopolymer of lower than 110.degree. C. and having an alkyl group having from 1 to 6 carbon atoms, and PA0 (C) is an .alpha.,.beta.-ethylenically unsaturated carboxylic acid unit, and wherein PA0 the content of the component of group (A) is from 5 to 70 mol %, the content of the component of group (B) is from 5 to 70 mol %, and the content of the component of group (C) is from 20 to 60 mol %, provided that the total content of the components of groups (A), (B…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.