Insulating glass sealants based on polyurethanes and organically-modified nanoclays
AssigneeFina Technology, Inc.
InventorsHerbert Chao, Taejun Yoo, Nan Tian
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Abstract
Curable compositions are prepared using polyisocyanates, hydrophobic hydroxyl-terminated polymers (such as hydroxyl-terminated polyfarnesenes and hydroxyl-terminated polydienes) and organically-modified nanoclays, optionally in combination with chain extenders and/or urethane catalysts. When cured, the compositions yield polyurethane-based sealants useful in insulating glass units which have improved (lowered) moisture vapor transmission rate values as a consequence of the inclusion of the organically-modified nanoclays.
Claims19
A curable composition useful for producing an insulating glass sealant, wherein the curable composition comprises at least one organically-modified nanoclay, at least one hydroxyl-terminated polyfarnesene, and at least one polyisocyanate.
A curable composition useful for producing an insulating glass sealant, wherein the curable composition comprises at least one organically-modified nanoclay, at least one hydroxyl-terminated polymer comprised of at least one hydroxyl-terminated polyfarnesene and at least one hydroxyl-terminated polybutadiene, and at least one polyisocyanate.
A curable composition useful for producing an insulating glass sealant, wherein the curable composition comprises at least one organically-modified nanoclay, at least one hydroxyl-terminated polymer selected from the group consisting of hydroxyl-terminated polyfarnesenes and hydroxyl-terminated polydienes, and at least one polyisocyanate, wherein the curable composition is comprised of from 5% to 100% by weight hydroxyl-terminated polyfarnesene and 0 to 95% by weight hydroxyl-terminated polybutadiene based on the total weight of hydroxyl-terminated polymer.
A curable composition useful for producing an insulating glass sealant, wherein the curable composition comprises at least one organically-modified nanoclay, at least one hydroxyl-terminated polymer selected from the group consisting of hydroxyl-terminated polyfarnesenes and hydroxyl-terminated polydienes, at least one polyisocyanate, and at least one urethane catalyst.
A sealant, comprising at least one organically-modified nanoclay and a polyurethane produced by reaction of an admixture comprising at least one hydroxyl-terminated polyfarnesene and at least one polyisocyanate.
Dependencies are inferred from the claim text.