Polymeric acetal resins containing free radical inhibitors and their use in lithographic printing

US6783913B2 · kind B2 · utility

Assignee

• Kodak Polychrome Graphics Company Ltd. · US

Inventors

• Hans-Horst Glatt · Munich, DE
• Udo Dwars · Herzberg, DE
• Harald Baumann · Tuttlingen, DE
• Ingrid Glatt · Munich, DE

Key dates

• Filing date: Apr 5, 2002
• Grant date: Aug 31, 2004
• Expiry date: Apr 5, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polymeric acetal resins useful in lithographic printing are disclosed. The polymeric acetal resin contains units (A), (B), (C), (D), and (E). Unit (A) is a vinyl alcohol unit. Unit; (B) is a polyvinyl acetal unit containing an R group, where R is hydrogen, an aliphatic group, an aromatic group, or an arylaliphatic group. Unit (C) is a vinyl carboxylate unit. Unit (D) is an acidic vinyl acetal unit and/or a residue of an acidic vinyl monomer. Unit (E) is a free radical polymerization-inhibiting vinyl acetal unit and/or a free radical polymerization-inhibiting vinyl alcohol ester unit. The resin comprises about 10 to about 60 mol % of unit (A), about 5 to about 60 mol % of unit (B), about 0.3 to about 30 mol % of unit (C), about 1 to about 40 mol % of unit (D), and about 0.01 to about 2 mol % of unit (E).