Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1993-06-29
1994-07-26
Kight, III, John
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
521172, 560198, C07C 6903, C07C 6976, C07C 6982
Patent
active
053328604
ABSTRACT:
Polyurethane foams having improved retention of insulative properties can be prepared using one or more of two novel polyols. One of the polyols is a polyether prepared by reacting a monoepoxide with a compound having the general formula: ##STR1## wherein X is H, Li, Na, K; A is N, S or O; L is a covalent bond or a connecting group having from 1 to 10 carbons; M is any group capable of reacting with an ethylene oxide molecule in the presence of a basic catalyst; and J is an integer from 2 to 8. The other polyol is prepared by (1) admixing ethylene carbonate and one or more hydroxyl functional compounds under reaction conditions sufficient to react the ethylene carbonate and the hydroxyl functional compounds to produce a polyol precursor, and (2) admixing the polyol precursor with diethylene glycol and an anhydride, a dicarboxylic acid, a tricarboxylic acid or mixtures thereof, optionally in the presence of a catalyst.
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Kaplan Warren A.
Moore Douglas R.
Schrock Alan K.
Tabor Ricky L.
Dodson Shelley A.
Kight III John
The Dow Chemical Company
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