Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant
Reexamination Certificate
2005-01-19
2008-09-02
Jagannathan, Vasu (Department: 1796)
Compositions
Compositions containing a single chemical reactant or plural...
Organic reactant
C252S182180, C252S182230, C252S182280, C252S183110
Reexamination Certificate
active
07419619
ABSTRACT:
The invention relates to mixtures for producing transparent plastics, comprising a) a prepolymer, produced from the compounds of formulae (I) and (II), wherein R1independently represents hydrogen or a methyl group, R2independently represents a linear or branched, aliphatic or cycloaliphatic group or a substituted or unsubstituted aromatic or heteroaromatic group and m and n independently represent an integer greater or equal 0, with m+1>0, and compounds of formula (III), alkyldithiols or polythiols, preferably HS—R3—SH (III), wherein R3is equal or different from R2and can have the meaning indicated in R2, and b) at least one radically polymerizable monomer (A) having at least two methacrylate groups and c) aromatic vinyl compounds, such as styrene and d) optionally a radically polymerizable monomer having at least two terminal olefinic groups that have different reactivity, and/or e) optionally at least one monomer (B) from the group of methacrylates, preferably 2-hydroxyethylmethacrylate.
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Hartmann Patrik
Schmitt Bardo
Jagannathan Vasu
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Reddy Karuna P
Roehm GmbH & Co. KG
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