Low viscosity allophanates containing actinically curable...

Details Low viscosity allophanates containing actinically curable... Low viscosity allophanates containing actinically curable...

2011-03-08

2011-03-08

Sergent, Rabon (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C522S090000, C522S097000, C522S098000, C522S174000, C528S045000, C528S049000, C528S055000, C528S075000, C564S044000, C564S045000, C564S046000, C252S182180

Reexamination Certificate

active

07902315

ABSTRACT:
The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting at temperatures of ≦130° C.A) one or more compounds containing uretdione groups withB) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups),C) optionally NCO-reactive compounds other than B),in the presence ofD) a catalyst containing at least one zinc compound,to form allophanate groups by opening the uretdione ring.

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