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US 9,834,639 B2Granted
Curing agent for moisture-curing compositions
AssigneeSika Technology AG
InventorsUrs Burckhardt, Steffen Kelch, Ulrich Wolf
Life of this patent
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Abstract
The present invention relates to a curing agent for moisture-curing compositions which includes at least one aqueous emulsion of at least one epoxy resin. Curing agents according to the invention are especially used for the accelerated curing of moisture-curing compositions which are based on polyurethane polymers that have isocyanate groups or of silane-functional polymers.
Claims18
A method of adhesive bonding, sealing, or coating a substrate, comprising:
- mixing a component A and a component B of a two-component composition together to obtain a curable composition;
- applying the curable composition to the substrate;
- and
- curing the curable composition applied to the substrate, wherein:
- component A, at a time of mixing, comprises, in a nonaqueous system, (i) at least one moisture-curing composition comprising at least one polyurethane polymer including isocyanate groups, and (ii) at least one curing agent or accelerator for curing an epoxy resin;
- component B, at a time of mixing, comprises at least one curing agent comprising at least one aqueous emulsion of at least one epoxy resin;
- and
- the weight ratio of component A to component B is 100:0.5 to 100:20.
5 more elements
A method of adhesive bonding, sealing, or coating a substrate, comprising:
- mixing a component A and a component B of a two-component composition together to obtain a curable composition;
- applying the curable composition to the substrate;
- and
- curing the curable composition applied to the substrate, wherein:
- component A, at a time of mixing, comprises, in a nonaqueous system, (i) at least one moisture-curing composition comprising at least one silane-functional polymer, and (ii) at least one curing agent or accelerator for curing an epoxy resin;
- component B, at a time of mixing, comprises at least one curing agent comprising at least one aqueous emulsion including epoxy resin particles and an emulsifier formed by emulsifying at least one liquid epoxy resin in the presence of the emulsifier and water;
- and
- the weight ratio of component A to component B is 100:0.5 to 100:20.
5 more elements
Dependencies are inferred from the claim text.