Isocyanate addition products and a process for their production

Details Isocyanate addition products and a process for their production Isocyanate addition products and a process for their production

1985-08-05

1986-11-18

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521168, 521906, 528 51, C08G 1838, C08G 1814

Patent

active

046236724

ABSTRACT:
Flame retardant isocyanate addition products are made by reacting an isocyanate with a compound selected from the group consisting of 1-phosphonoethane-2-carboxylic acid-tri-C.sub.1 -C.sub.4 -alkyl esters, 1-phosphonopropane-2-carboxylic acid-tri-C.sub.1 -C.sub.4 -alkyl esters and mixtures thereof. Known isocyanate-reactive compounds, blowing agents, catalysts, additives and auxiliary agents may optionally be included in the reaction mixture. These flame retardant products are useful in construction applications such as insulation panels for roof insulation.

REFERENCES:
patent: 2612513 (1952-09-01), Gluesenkamp et al.
patent: 2724718 (1955-11-01), Stiles et al.
patent: 2957931 (1960-10-01), Hamilton et al.
patent: 3664975 (1972-05-01), Kerst
patent: 4525489 (1985-06-01), Narayan

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