Polyester polyols from tall oil fatty acid, maleic anhydride, an

Details Polyester polyols from tall oil fatty acid, maleic anhydride, an Polyester polyols from tall oil fatty acid, maleic anhydride, an

1990-08-31

1991-12-24

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528279, 5282955, 528302, 528303, 525437, 525440, 5254445, 525445, 525454, 521138, 521157, 521182, 4283184, 4283191, 4284231, C08G 6302

Patent

active

050754173

ABSTRACT:
Polyester polyols are prepared by reacting a multifunctional adduct (e.g., maleic anhydride (MA)) and tall oil fatty acid, (TOFA), and then esterifying/transesterifying the MA/TOFA reaction product with an excess of aromatic polyester polyols (preferably such polyols are produced from dimethyl terephthalate (DMT) process residue and polyhydric alcohols). The polyester polyols may be used in the manufacture of rigid polyurethane (PUR) and rigid urethane-modified polyisocyanurate (PUR/PIR) foams.

REFERENCES:
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patent: 4608432 (1986-08-01), Magnus et al.
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patent: 4644048 (1987-02-01), Magnus et al.
patent: 4720571 (1988-01-01), Trowell
patent: 4758602 (1988-07-01), Trowell
patent: 4897429 (1990-01-01), Trowell et al.
patent: 5001165 (1991-03-01), Canaday et al.

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