Phenolic hydroxyl-containing compositions and epoxy resins prepared therefrom
AssigneeThe Dow Chemical Company
InventorDonald L. Nelson
Life of this patent
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Abstract
Epoxy resins are prepared by dehydrohalogenating the reaction product of an epoxy alkyl halide such as epichlorohydrin with the reaction product of an aromatic hydroxyl-containing compound such as phenol with an unsaturated hydrocarbon such as piperylene or isoprene or mixtures of dicyclopentadiene with other dimers or oligomers derived from C.sub.3 -C.sub.6 unsaturated hydrocarbons.
Claims21
An epoxy resin composition resulting from the dehydrohalogenation of the reaction product of
- (A) an epoxy alkyl halide;
- with
- (B) an acid catalyzed product resulting from reacting
- (1) at least one aromatic hydroxyl-containing compound having from one to two aromatic rings and at least one ortho or para position with respect to a hydroxyl group available for ring alkylation;
- with
- (2) at least one unsaturated hydrocarbon selected from
- (a) monounsaturated or diunsaturated hydrocarbons having from 4 to 6 carbon atoms or mixture thereof;
- (b) unsaturated hydrocarbons containing an average of from 6 to about 55 carbon atoms per molecule and containing not more than 94 weight percent dicyclopentadiene;
- (c) oligomers and/or cooligomers of hydrocarbon dienes, which dienes have from 4 to about 18 carbon atoms and which dienes contain at least 6% by weight of dienes other than dicyclopentadiene;
- and
- (d) mixtures thereof;
- and
- wherein the components (B-1) and (B-2) are employed in quantities which provide a mole ratio of (B-1) to (B-2) of from about 1.5:1 to about 30:1, and components (A) and (B) are employed in quantities which provide an epoxy group to phenolic hydroxyl group ratio of from about 1.5:1 to about 20:1.
A composition having more than one phenolic hydroxyl group and more than one aromatic ring per molecule, which is substantially free of ether groups and which composition results from an acid catalyzed reaction of
- (A) at least one aromatic compound containing at least one aromatic hydroxyl-group and from one to two aromatic rings and at least one ortho or para position relative to a hydroxyl group available for ring alkylation;
- with
- (B) at least one unsaturated hydrocarbon selected from
- (1) monounsaturated or diunsaturated hydrocarbons having from 4 to 6 carbon atoms or mixtures thereof;
- (2) unsaturated hydrocarbons containing an average of from 6 to about 55 carbon atoms per molecule and containing not more than 94 weight percent dicyclopentadiene;
- (3) oligomers and/or cooligomers of hydrocarbon dienes, which dienes have from 4 to about 18 carbon atoms and which dienes contain at least 6% by weight of dienes other than dicyclopentadiene;
- and
- (4) mixtures thereof;
- and wherein
- components (A) and (B) are employed in quantities which provide a mole ratio of component (A) to component (B) of from about 1.8:1 to about 30:1 and wherein said catalyst is employed in quantities of from about 0.01% to about 5% by weight of the quantity of component (A).
Dependencies are inferred from the claim text.