Mixtures for producing transparent plastics, transparent plastics, method for producing the same and the use thereof
申请人:Schmitt Bardo
公开号:US20070161766A1
公开(公告)日:2007-07-12
The present invention relates to mixtures for preparing transparent plastics, encompassing
a) a prepolymer prepared from compounds of the formula (I) and (II)
where each R
1
, independently of the others, is hydrogen or a methyl radical, each R
2
, independently of the others, is a linear or branched, aliphatic or cycloaliphatic radical, or a substituted or unsubstituted aromatic or heteroaromatic radical, and each of m and n, independently of the other, is a whole number greater than or equal to 0, where m+n>0, and from compounds of the formula (III), or from alkyl dithiols or from polythiols, preferably HS—R
3
—SH (III) where R
3
, identical with or different from R
2
, can be as defined for R
2
, and b) at least one monomer (A) capable of free-radical polymerization and having at least 2 methacrylate groups, and c) aromatic vinyl compounds, such as styrene, and d) if appropriate, a monomer capable of free-radical polymerization and having at least two terminal olefinic groups whose reactivity differs, and/or e) if appropriate, at least one monomer (B) from the group of the methacrylates, preferably 2-hydroxyethyl methacrylate.