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US 6,204,339 B1Granted
Elastomeric composition comprising a blocked mercaptosilane coupling agent and a deblocking agent
AssigneeCrompton Corporation
InventorsBruce A. Waldman, Misty Weiyu Huang, Richard W. Cruse
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Abstract
This invention describes the use of blocked mercaptosilanes wherein the hydrogen atom of the mercaptan functionality has been substituted to manufacture coating, adhesive, sealant and elastomeric compositions. The blocked mercaptosilanes described are unique in that they allow the application of elastomers to substrates to proceed while remaining inert toward coupling to the catalyst. The coupling reactions of these blocked mercaptosilicon compounds are triggered by exposure to an appropriate deblocking agent.
Claims20
A composition comprising:
- a. an elastomer;
- b. a crosslinker, either intrinsic or extrinsic to the elastomer;
- c. a metallo or organometallic cure catalyst;
- d. a blocked mercaptosilane;
- e. a deblocking agent;
- and
- f. a substrate.
4 more elements
A process comprising:
- a mixing an elastomer, an intrinsic or extrinsic cross-linker, a cure catalyst, and a blocked mercaptosilane;
- b. applying the mixture of step (a) to a substrate;
- c. deblocking the mercaptosilane, either as part step (b) or after step (b);
- and
- d. allowing the mixture to cure.
2 more elements
Dependencies are inferred from the claim text.