Toluene diisocyanate residue-based compositions having reduced a

Details Toluene diisocyanate residue-based compositions having reduced a Toluene diisocyanate residue-based compositions having reduced a

1997-10-27

1998-11-17

Gorr, Rachel

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 73, 25218222, 524714, 524871, 525458, 521128, C08G 1830

Patent

active

058377948

ABSTRACT:
TDI residue-based urethane-filled isocyanate compositions are produced by reacting a TDI residue satisfying specified criteria with a monofunctional alcohol in amounts such that the equivalent ratio of isocyanate groups to hydroxyl groups is from about 0.9:1 to about 1:0.9. This reaction product is then dissolved in a diisocyanate or polyisocyanate before, during or after reaction of that product with an epoxide having an epoxide equivalent weight of from about 44 to about 400 at a temperature of up to 120.degree. C. These TDI residue-based urethane-filled isocyanate compositions are particularly useful in the production of polyurethanes.

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patent: 5185384 (1993-02-01), Daussin et al.
patent: 5290818 (1994-03-01), Nafziger et al.

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