The Dow Chemical Company

Dow Global Technolgoies LLC

Douglas R Moore

Alan K Schrock

Ricky L Tabor

Warren A Kaplan

James J Jakubowski

Keith R Plowman

Wayne R Willkomm

Rick L Tabor

Paul L Neill

Ruben Solis

The present invention is a polyurethane dispersion that can be used to prepare polyurethane polymers which have moisture resistant properties. Moisture resistant polymers of the present invention are obtained by preparing the polymers from a polyurethane dispersion using a prepolymer formulation which includes an aliphatic mono, di or polyhydroxy compound which has an aliphatic side chain substituent which contains from 5 to 30 carbon atoms.

Aqueous polyurethane dispersions useful for preparing polymers with improved moisture resistance properties

Disclosed are stable aqueous polyurethane latexes prepared from prepolymer formulations including a polyisocyanate component and polyol component, wherein from 5 to 40 percent of the weight of the polyol component is ethylene oxide in the form of ethylene oxide applied as an end cap onto a propylene oxide or higher oxyalkylene polyoxyalkylene polyol, and no more than 45 percent of the weight of polyol component is ethylene oxide. These latexes are prepared without the use of organic solvents.

Polyurethane latexes, processes for preparing them and polymers prepared therewith

A polymer polyol is prepared by polymerizing one or more ethylenically unsaturated monomers in a polyol. A high molecular weight stabilizer having polymerizable ethylenic unsaturation and a low hydroxyl functionality is used, which leads to improved dispersion stability at reduced stabilizer level.

Stabilizers for preparing polymer polyols, and process for preparing

Polyurethane foams can be prepared which have improved retention of insulative properties. The foams are prepared from formulations including a glycerine initiated ethoxylated polyol prepared from a formulation including from about two to about three moles of ethylene oxide per mole of glycerine initiator and/or a tri- to octa-functional substantially linear hydroxy alkane initiated ethylene carbonate ethoxylated polyol prepared from a formulation including from about 2 to about 15 moles of ethylene carbonate per mole of initiator wherein the ratio of moles of ethylene carbonate to initiator functionality is from 0.5 to less than 2.

Polyurethane foams having improved retention of insulative properties

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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Clute, TX, United States of America

Douglas R Moore