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US 3,993,576 AGranted
Mixtures of high and low molecular weight polyols resistant to phase separation
AssigneeThe Dow Chemical Company
InventorBenny Gene Barron
Life of this patent
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Abstract
Mixtures of high molecular weight polyols and low molecular weight polyols such as mixtures of glycerine initiated polyoxypropylene glycols and mono- and diethylene glycols are solubilized and therefore rendered resistant to phase separation upon storage by the addition thereto of an effective quantity of a derivative of butylene glycol or propylene glycol such as dibutylene glycol.
Claims13
A composition resistant to phase separation which comprises:
- A. an insoluble mixture which is susceptible to phase separation which comprises:
- 1. from about 95% to about 50% by weight of a relatively high molecular weight polyoxy alkylene polyol wherein the majority of the polyoxyalkylene groups are other than oxyethylene groups and have an average of from about 2 to about 4 OH groups per molecule and an average OH equivalent weight of from about 650 to about 3000 or mixtures thereof, and
- 2. from about 5% to about 50% by weight of a relatively low molecular weight polyol selected from the group consisting of ethylene glycol, diethylene glycol, tetraethylene glycol, liquid polyoxyethylene glycols, 1,4-butane diol, glycerine and mixtures thereof;
- and
- B. as a solubilizer for Component A, a minor but effective quantity of a compound or mixture of compounds represented by the formulas ##EQU5## wherein R is methyl or ethyl and x has a value from 0 to about 3 with the proviso that when x is O, R is ethyl;
- ##EQU6## wherein R' is hydrogen or methyl, y and z independently have a value from zero to about 2 with the proviso that at least one of y and z must have a value of at least 1.
3 more elements
Dependencies are inferred from the claim text.