Method for producing highly transparent plastics for optical materials

• Main Authors: KNEBEL JOACHIM, HARTMANN PATRIK, SCHMITT BARDO
• Format: Patent
• Language: English
• Published: 10.08.2005
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to a process for preparing a highly transparent plastic obtainable by free-radical copolymerization of a mixture containing compounds of the formula (I) and (II) where R1 is independently at each instance hydrogen or a methyl radical, R2 is independently at each instance a linear or branched, aliphatic or cycloaliphatic radical or a substituted or unsubstituted aromatic or heteroaromatic radical and m and n are each independently an integer of not less than 0 subject to the proviso that m+n> 0, which is characterized in that it is obtainable from a mixture which contains more than 10 mol %, based on the total amount of the compounds of the formula (I) and (II), of compounds of the formula (II) where m+n= 2. The present invention also relates to the mixture of the compounds (I) and (II), to processes for preparing the mixture and to particular uses for the highly transparent plastics.