Aromatic polyols made from waste streams from the manufacture of

Details Aromatic polyols made from waste streams from the manufacture of Aromatic polyols made from waste streams from the manufacture of

1982-11-22

1984-04-24

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521 485, 521172, 521173, 5283081, 560 92, C08G 1814

Patent

active

044449186

ABSTRACT:
Mixtures of aromatic polyols containing ester functionalities suitable for use in rigid foams prepared by reacting dibasic acid residues with an alkylene glycol residue, the reaction product of which is reacted with terephthalic acid residues are described. These novel polyols may be blended with conventional polyols to yield excellent rigid foams, thus serving as useful polyol extenders. These low hydroxyl number extender polyols unexpectedly have a low relative viscosity.

REFERENCES:
patent: 3590070 (1971-06-01), Martin et al.
patent: 4048104 (1977-09-01), Svoboda et al.
patent: 4223068 (1980-09-01), Carlstrom et al.

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