Process for preparing low-monomer-content TDI trimers

Details Process for preparing low-monomer-content TDI trimers Process for preparing low-monomer-content TDI trimers

2005-08-30

2005-08-30

Gorr, Rachel (Department: 1711)

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...

C528S073000, C544S192000, C544S193000, C544S222000

Reexamination Certificate

active

06936678

ABSTRACT:
The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and 2,6-diisocyanatotoluene (TDI) and to the use thereof in coatings. The trimers are produced from a mixture of from 20 to 80% by weight of diisocyanate component containing at least 80% by weight of 2,4- and/or 2,6-diisocyanatotoluene and from 20 to 80% by weight of solvents and/or diluents and also phenolic catalysts containing dialkylaminomethyl groups.

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