Solid mixtures of alpha-hydroxycarbonyl derivatives of...

Details Solid mixtures of alpha-hydroxycarbonyl derivatives of... Solid mixtures of alpha-hydroxycarbonyl derivatives of...

2006-02-07

2006-02-07

Shippen, Michael L. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

Reexamination Certificate

active

06995290

ABSTRACT:
The present invention refers to solid mixtures of alpha hydroxycarbonyl derivatives of alpha-methylstyrene oligomers containing at least 90% of the dimer isomers, the dimer isomer ratio being between 2.5 and 7, to their preparation and to their use as photoinitiators in photopolymerisation.

REFERENCES:
patent: 4347111 (1982-08-01), Gehlhaus et al.
patent: 4987159 (1991-01-01), Li Bassi et al.

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