Oxetane-containing compounds and compositions thereof
AssigneesHenkel IP & Holding GmbH, Henkel AG & Co. KGaA
InventorsShengqian Kong, Puwei Liu, Stijn Gillissen, Donghang Xie, Lirong Bao, Daniel J. Duffy, Allison Yue Xiao, Emilie Barriau
Life of this patent
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Abstract
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.
Claims38
A curable composition comprising at least one oxetane-containing compound and at least one of a 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.
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A LED device comprising:
- a substrate on which is electrically connected a LED over and/or around which is formed an encapsulant comprising a reaction product of an oxetane-containing compound and 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.
A reflector for an LED assembly comprising a reaction product of an oxetane-containing compound and 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.
A lens for an LED assembly comprising a reaction product of an oxetane-containing compound and a 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.
A composition comprising phosphor and an oxetane-containing compound and a carboxylic acid or a latent 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.
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A method of manufacturing an encapsulant composition for an LED assembly, steps of which comprise
- providing one or more oxetane-containing compounds;
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- providing 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,
- wherein the encapsulant composition when cured at a temperature of 25° C. to 200° C. for a period of time of about 1 to about 2 hours demonstrates an initial transparency of at least about 85% and a percent transparency decrease of about 10% after exposure to a temperature of 150° C. for a period of time of 1,000 hours as measured by UV/VIS spectrophotometer at 450 nm;
- thermal stability after exposure to 150° C. for a period of time of 500 hours in terms of yellowing of less than 10 as measured by BYK CIE spectro-guide or a percent transmission decrease of less than about 10%;
- has a refractive index of greater than 1.5;
- and barrier properties of less than 2 g*cm/[m2*day] measured by water vapor transmission rates at 50° C. at a relative humidity of 100% using a MOCON PERMATRAN-W-3/33.
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Dependencies are inferred from the claim text.