TH3631B - A process for preparing epoxy resins from compounds containing aliphatic hydroxyls. - Google Patents

Abstract

The process for preparing epoxy resins consists of providing (a) a material with an average of more than 1 aliphatic hydroxyl group per molecule reacting with (b) epoxy. Alkyl Halides when there is (c) alkali metal hydroxide and (d) catalis move at least one phase by removing the resulting salts, allowing the reaction mixture to separate into Water phase and phase Organic, aqueous phase removal And recovery of epoxy resin from The organic phase where the proportions of the elements (a) and (b) are such that the elements (a) dissolve in the elements (b) and the equivalence ratios of the elements (b) the equivalence of components (a) are greater. 11 Use component (c) in the form of a solution of 18 to 70 percent in weight in water. And in the amount of which Sufficient to cause the separation of the reaction mixture to phase Water and the organic phase at the end of the reaction And where As little as quantity Relative to the amount of unreactive elements (a), the elements (d) are used in amounts from 0.1 to 10% wt relative to the reagent and react at temperatures between 0 and 110C. Repeat steps at least once a step where phase Organic reacts with elements (c) that only Enough to cause the separation of the reaction mixture into the aqueous phase And organic phase And which, at least, is a relative quantity (a) that has not been reacted. Removing the resulting salts, allowing the reaction mixture to separate into the aqueous phase And phase in And removing the aqueous phase This process provides High transformation of aliphatic hydroxyl materials It is in the corresponding glycyl ether:

Claims (6)

1. The process for preparing epoxy resins consists of providing (a) a material with an average of more than 1 aliphatic hydroxyl group per molecule reacting with (b) A. Poxylkyl Halides when there is (c) alkali metal hydroxide and (d) catalis move at least one phase by removing the resulting salts, allowing the reaction mixture to separate into Water phase and phase Organic, aqueous phase removal And recovery of epoxy resin from The organic phase where the proportions of the elements (a) and (b) are such that the elements (a) dissolve in the elements (b) and the equivalence ratios of the elements (b) the equivalence of components (a) are greater. 1: 1 element (c) is used in the form of a solution of 18 to 70 percent in weight in water. And in the amount of which Sufficient to cause the separation of the reaction mixture to phase Water and the organic phase at the end of the reaction And where As little as quantity Relative to the amount of unreactive elements (a), the elements (d) are used in amounts from 0.1 to 10% wt relative to the reagent and react at temperatures between 0 and 110C. Repeat steps at least once a step where phase Organic reacts with elements (c) that only Enough to cause the separation of the reaction mixture into the aqueous phase And organic phase And which, at least, is a relative quantity (a) that has not been reacted. Removing the resulting salts, allowing the reaction mixture to separate into the aqueous phase 2. Process of claim 1, where (1) the equivalent ratio of (b) to (a) is from 1: 1 to 10: 1 (2) uses element (c) in thickness from 45 to 55 percent by weight (3) elements (d) will be present in quantities ranging from 0.5 or 1.5 percent and (4) react at temperatures from 0C to 70C. 3. Process of claim 1, where (1) the equivalent ratio of (b) to (a) is from 1.5: 1 to 5: 1 (2), the elements (d) will exist in quantities from 0.5 or 1.5 percent by weight and (3) reacts at temperatures from 15C to 60C. 4. Process of claim No. 1, where (1) element (a) is trimethylone, propane, cyclohexendai, methyl dicyclopentadiene. Ndimethanol 1,4 - Butanediol ethyllicol Polypropylene Pentaethrithol or propylene glycol (2), component (b) as epichlorohydrin, (3) component (c) as sodium hydroxide, and (4) ) Composition (d) is an ammonium quaternary or quaternary phosphonium compound. 5. Process of claim No. 2, where (1) element (a) is trimethylone, propane, cyclohexendai, methyl dicyclopentadiene. Ndimethanol 1,4 - Butanediol ethyllicol Polypropylene Pentaethrithol or propylene glycol (2), component (b) as epichlorohydrin, (3) component (c) as sodium hydroxide, and (4) ) Composition (d) is an ammonium quaternary or quaternary phosphonium compound. 6. Process of claim No. 3, where (1) element (a) is trimethylone, propane, cyclohexendai, methylol, dicyclopentadiene. Ndimethanol 1,4 - Butanediol ethyllicol Polypropylene Pentaethrithol or propylene glycol (2), component (b) as epichlorohydrin, (3) component (c) as sodium hydroxide, and (4) ) Composition (d) is an ammonium quaternary or quaternary phosphonium compound (6 claims, 2 faces, 0 pic).