Click chemistry for sealants and adhesives
AssigneeChem Link, Inc.
InventorsBaljinder Kaur, Jonathan Ballema
Life of this patent
Estimating the term…
Abstract
The invention described herein generally pertains to a composition that includes a silyl-terminated polymer having silyl groups linked to a polymer backbone via triazole. The silyl-terminated polymer is a reaction product of a functionalized polymer backbone and a functionalized silane. The polymer backbone includes a first functional group, which may be one of an azide or an alkyne. The functionalized silane includes a second functional group may also be one of an azide or an alkyne, but is also different from the first functional group. The functionalized polymer backbone is reacted with the functionalized silane in the presence of a metal catalyst.
Claims20
A method for producing a curable composition, comprising:
- mixing a functionalized polymer bearing a first functional group with a functionalized silane bearing a second functional group in the presence of a non-activated metal catalyst, wherein the functionalized polymer either contains a silyl group or contains two or more of the first functional group,
- wherein the first functional group is selected from a group consisting of an azide and an alkyne,
- wherein the second functional group is different from the first functional group and selected from a group consisting of an azide and an alkyne,
- wherein one of the first or second functional groups is a strained alkyne group capable of reacting with an azide group without the metal catalyst,
- wherein the result is a silyl-terminated polymer having a first silane group and a second silane group, the first silane group linked to the functionalized polymer via a first triazole moiety, the second silane group is either present in the functionalized polymer or the second silane group is linked to the functionalized polymer via a second triazole moiety, and
- wherein the metal catalyst, upon activation, catalyzes cross-linking of the first silane group and the second silane group.
A method for producing a curable composition, comprising:
- mixing a functionalized polymer backbone comprising a first functional group and a functionalized silane comprising a second functional group in the presence of a catalyst,
- wherein the first functional group is selected from a group comprising one of an azide or an alkyne,
- wherein the second functional group is selected from a group comprising one of an azide or an alkyne,
- wherein the second functional group is different than the first functional group,
- wherein the functionalized polymer backbone is a hybrid polymer comprising an inorganic polymer backbone linked to an organic polymer, and
- wherein the catalyst is configured to promote cross-linking in the mixture to form the curable composition.
A method comprising:
- mixing a functionalized polymer backbone bearing a first functional group and a functionalized silane bearing a second functional group to form a cured sealant, wherein the functionalized polymer backbone is a hybrid polymer comprising an inorganic polymer backbone linked to an organic polymer backbone,
- wherein the first functional group comprises one of an azide or an alkyne,
- wherein the second functional group comprises one of an azide or an alkyne and is different from the first functional group, and
- wherein one of the first or second functional groups is a strained alkyne group.
A method comprising:
- mixing a metal catalyst comprising copper II with a functionalized polymer backbone bearing a first functional group and a functionalized silane bearing a second functional group, wherein the copper II of the metal catalyst is converted to copper I to catalyze cross-linking, to form a cured sealant,
- wherein the first functional group comprises one of an azide or an alkyne,
- wherein the second functional group comprises one of an azide or an alkyne and is different from the first functional group, and
- wherein one of the first or second functional groups is a strained alkyne group.
Dependencies are inferred from the claim text.