Polyester polyols from tall oil fatty acid, maleic anhydride, and aromatic polyester polyols
AssigneeCape Industries
InventorsJohn M. Trowell, Billy S. Jessup, Jr.
Life of this patent
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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.
Claims21
A process for preparing a mixture of polyester polyols comprising the steps of:
- reacting a multifunctional adduct and tall oil fatty acid thereby producing a first reaction product;
- and
- reacting the first reaction product with aromatic polyester polyols in the presence of an esterification/transesterification catalyst while continuously removing by-products that are formed during the last mentioned reaction.
A mixture of polyester polyols prepared by the reaction comprising the steps of:
- reacting a multifunctional adduct and tall oil fatty acid thereby producing a first reaction product;
- and
- reacting the first reaction product with aromatic polyester polyols in the presence of an esterification/transesterification catalyst while continuously removing by-products that are formed during the last mentioned reaction.
A laminate comprising at least one facing sheet adhered to a urethane-modified polyisocyanurate foam prepared by reacting a mixture comprising:
- 1) an organic polyisocyanate;
- 2) a blowing agent;
- 3) a urethane catalyst;
- 4) a brimerization catalyst;
- and
- 5) a mixture of polyester polyols prepared by:
- reacting a multifunctional adduct and tall oil fatty acid thereby producing a first reaction product;
- and reacting the first reaction product with aromatic polyester polyols in the presence of an esterification/transesterification catalyst while continuously removing by-product that are formed during the last mentioned reaction.
Dependencies are inferred from the claim text.