Low smoke, halohydrocarbon-compatible urethane-isocyanurate foam

Details Low smoke, halohydrocarbon-compatible urethane-isocyanurate foam Low smoke, halohydrocarbon-compatible urethane-isocyanurate foam

1983-08-17

1984-09-04

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521173, 521902, 521172, C08G 1814, C08G 1842

Patent

active

044698216

ABSTRACT:
Compositions having improved compatibility of halohydrocarbon blowing agents such as trichlorofluoromethane and suitable for curing with polyisocyanates to give low smoke urethane isocyanate foams are described. The compositions include the transesterification products of the residue obtained from the manufacture of dimethyl terephthalate and ethylene glycol or a polyethylene glycol; the transesterification product of that residue and a higher alkylene glycol or higher polyalkylene glycol; and a polyether polyol having an average hydroxyl functionality of at least 4.

REFERENCES:
patent: 3647759 (1972-03-01), Walker
patent: 4223068 (1980-09-01), Carlstrom et al.
patent: 4237238 (1980-12-01), DeGuiseppi et al.
patent: 4346229 (1982-08-01), Derr et al.
patent: 4394286 (1983-07-01), Millick

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