Polyamine crosslinking agent formulation and its preparation

Details Polyamine crosslinking agent formulation and its preparation Polyamine crosslinking agent formulation and its preparation

1996-12-16

1998-01-06

Raymond, Richard L.

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...

528 48, 528 53, 528 73, 528183, 528222, 528229, 544180, C08G 1808, C08G 1810

Patent

active

057055947

ABSTRACT:
Liquid polyamine crosslinking agent formulations based on trimerized toluylene 2,4- and/or 2,6-diisocyanate, with formation of an isocyanurate structure and hydrolysis of the isocyanate groups to amine groups, are described. The novel crosslinking agent formulations have a content of 40 to 80% of the total weight of the solids content of the crosslinking agent formulation of 1,3,5-tris-(3-amino-4-methyl-phenyl,2-methyl-3-aminophenyl) isocyanurate (I) which is not further condensed, and a content of not more than 1.0% of the total weight of the crosslinking agent formulations of toluylene-2,4- and/or -2,6-diamine (III). For the preparation, toluylene diisocyanate is trimerized, to form the isocyanurate structure, until 10 to 25% of the NCO groups have been reacted. The toluylene diisocyanate which has not undergone condensation is then distilled off, the bottom product formed by this operation is taken up directly in a solvent A and the 30 to 70% strength by weight solution formed by this procedure is metered into a hydrolysis in water/N,N-dialkyl-carboxylic acid amide in the presence of a catalytic amount of a basic catalyst. After the hydrolysis, the crosslinking agent formulations are brought to a solids content of 35 to 60% of the total weight of the formulation by distilling off a portion of the solvents and adding a solvent B.

REFERENCES:
patent: 2801244 (1957-07-01), Balon
patent: 4115373 (1978-09-01), Henes et al.
patent: 4525534 (1985-06-01), Rasshofer
patent: 4783345 (1988-11-01), Kleeberg et al.
patent: 4812490 (1989-03-01), Kleeberg et al.

Affiliated with

Also associated with

Rating

Polyamine crosslinking agent formulation and its preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyamine crosslinking agent formulation and its preparation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyamine crosslinking agent formulation and its preparation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2329867