Moisture curable polydisulfides
AssigneesHenkel AG & Co. KGaA, Henkel Corporation
InventorsJohn G. Woods, Anthony F. Jacobine, Johann Klein, Kathrin Isenbuegel
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Abstract
Provided are polydisulfides that are useful in moisture curable sealants. The polydisulfides have an S—S link in the backbone and are end-capped with at least one alkoxysilane functional group. Also provided are methods of making the polydisulfides, including methods that do not require the presence of a catalyst.
Claims20
A reaction product prepared from reactants comprising:
- a) at least one thiol-functional polydisulfide;
- and
- b) at least one alkoxy silane, wherein the alkoxy silane has at least one alkenyl functional group,
- wherein the reaction product is prepared in the presence of a free radical initiator.
A reaction product prepared from reactants comprising:
- a) at least one thiol-functional polydisulfide;
- and
- b) at least one alkoxy silane, wherein the alkoxy silane has at least one isocyanato-functional group.
A reaction product prepared from reactants comprising:
- (a) at least one isocyanato-functional polydisulfide;
- and
- (b) at least one alkoxy silane having at least one amino-functional group.
A reaction product prepared from reactants comprising:
- (a) at least one acryl-functional polydisulfide;
- and
- (b) at least one alkoxy silane having at least one thiol-functional group.
A process of preparing a polydisulfide comprising the step of:
- reacting reactants comprising at least one thiol-functional polydisulfide and at least one alkoxy silane having at least one alkenyl-functional group in the presence of a free radical initiator to form a polydisulfide having at least one alkoxy silane end group.
A process of preparing a polydisulfide comprising the step of:
- reacting reactants comprising at least one thiol-functional polydisulfide and at least one alkoxy silane having at least one isocyanato-functional group to form a polydisulfide having at least one alkoxy silane end group.
A process of preparing a polydisulfide comprising the step of:
- reacting reactants comprising at least one isocyanato-functional polydisulfide and at least one alkoxy silane having at least one amino-functional group to form a polydisulfide having at least one alkoxy silane end group.
A process of preparing a polydisulfide comprising the step of:
- reacting reactants comprising at least one acryl-functional polydisulfide and at least one alkoxy silane having at least one thiol-functional group to form a polydisulfide having at least one alkoxy silane end group.
Dependencies are inferred from the claim text.