OXETANE-CONTAINING COMPOUNDS AND COMPOSITIONS THEREOF
Oxetane-containing compounds, and compositions of oxetane-containing compounds together with carboxylic acids, latent carboxylic acids, and/or compounds having carboxylic acid and latent carboxylic acid functionality are provided. The oxetane-containing compounds and compositions thereof are useful as adhesives, sealants and encapsulants, particularly for components, and in the assembly, of LED devices.
1 . A curable composition comprising at least one oxetane-containing compound and at least one of an carboxylic acid, a latent carboxylic acid, compounds having at least one carboxylic acid functionality and at least one latent carboxylic acid functionality, or mixtures thereof.
2 . The composition of claim 1 , wherein the oxetane-containing compound is an aromatic oxetane ester embraced by the following general structure, in which R is a methyl or ethyl group, K is C(═O)O, G may or may not be present, but when present is (CH 2 ) m O, where m is 1-4, and X is O, S, SO 2 , C(═O), phenaldehyde, CH 2 or C 3 H 7 , and n is 1-3:
3 . The composition of claim 1 , wherein the oxetane-containing compound is an aromatic oxetane ester embraced by the following general structure, in which R is a methyl or ethyl group, X is an alkyl of from 1 to 5 carbon atoms or an alkylene of from 3 to 10 carbon atoms, either of which being substituted or interrupted by a heteroatom, such as O, N or S, or a biphenyl or a bisphenol A, E, F or S structure and n is 1-3:
4 . The composition of claim 1 , wherein the oxetane-containing compound is an aromatic oxetane oxetane ether embraced by the following general structure, in which R is a methyl or ethyl group, X is an alkyl of from 1 to 5 carbon atoms or an alkylene of from 3 to 10 carbon atoms, either of which being substituted or interrupted by a heteroatom, such as O, N or S, or interrupted by a ketone, an aryl, or a phenaldehyde, and n is 1-3:
5 . The composition of claim 1 , wherein the oxetane-containing compound is selected from one or more of:
6 . The composition of claim 1 , wherein the latent carboxylic acid is an anhydride embraced by the general formula below:
wherein R may or may not be present, but when present is O, X may or may not be present but when present is selected from phenyl or phenylene, biphenyl or biphenylene, or bisphenol A, E, F or S, and n is 1-3.
7 . The composition of claim 1 , wherein the latent carboxylic acid is an anhydride embraced by one or more of: