Partially hydrolyzed, DMT process residue, and useful propylene oxide derivative thereof
AssigneeHercofina
InventorWilliam H. Millick, III
Life of this patent
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Abstract
Disclosed is partially hydrolyzed, DMT process residue. Also disclosed is the reaction product of propylene oxide and the partially hydrolyzed, DMT process residue. The reaction product is useful as a polyol reactant in the preparation of urethane foams.
Claims9
As a composition of matter, partially hydrolyzed, DMT process residue, characterized by an Acid No. of about 150-375 mg. KOH/g.
A process for preparing partially hydrolyzed, DMT process residue, which comprises establishing a mixture of water and DMT process residue at a weight ratio of water to residue of about 0.05-5, a temperature of 200.degree.-285.degree. C. and a pressure of 220-1150 psig, and maintaining said mixture under these conditions until the Acid No. thereof has increased to about 150-375 mg. KOH/g.
As a composition of matter, a mixture of partially hydrolyzed, DMT process residue characterized by an Acid No. of about 150-375 mg. KOH/g, and a glycol containing 4 or more carbon atoms.
As a composition of matter, the propylene oxide reaction product of partially hydrolyzed, DMT process residue, which residue is characterized by an Acid No. of about 150-375 mg KOH/g.
As a composition of matter, a mixture consisting essentially of the propylene oxide reaction product of partially hydrolyzed, DMT process residue, which residue is characterized by an Acid No. of about 150-375 mg. KOH/g., and dipropylene glycol up to about 20% of the mixture.
Dependencies are inferred from the claim text.