4-methylene-1,3-dioxolanes as cross-linking agents

US6844375B2 · kind B2 · utility

Assignee

• Dainippon Ink and Chemicals, Inc. · JP

Inventors

• Helmut Hartl · Wien, AT
• Rainer B. Frings · Berlin, DE
• Gerwald Grahe · Berlin, DE

Key dates

• Filing date: Aug 23, 2001
• Grant date: Jan 18, 2005
• Expiry date: May 4, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31504
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to: 4-methylene-1,3-dioxolanes of the general formula (I) wherein R1 denotes hydrogen, C5-C6-cycloalkyl or C1-C4-alkyl; m and n, which may be the same or different, denote 0 or 1, whereby m≦n, o denotes 2, 3 or 4 depending on the valency of the group X; and X denotes a C—C single bond, straight-chain or branched C1-C18-alkylene, C5-C6-cycloalkylene, C8-C18-arylalkylene, —CH2(OCH2CH2)pOCH2—, —CH2(OCH(CH3)CH2)pOCH2—, wherein p is an integer from 0 to 100; a process for their production; and intermediate products used. Moreover, compositions capable of emission-free, photocationic cross-linking, which comprise 4-methylene-1,3-dioxolanes of the general formula (I) and their use for the production of solvent-resistant and transparent films.