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US 12,404,352 B2Granted
Encapsulated catalyst for one-part organopolysiloxane systems and methods related thereto
AssigneeNuSil Technology LLC
InventorsJianhua Liu, James Michael Lambert
Life of this patent
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Abstract
Described is a particle having a platinum-group catalyst that is fully encapsulated within a thermoplastic polymer. The particle can be used in a curable organopolysiloxane composition that also includes organopolysiloxane components.
Claims20
A particle comprising:
- a) a platinum-group catalyst;
- and
- b) a molecular weight controlled thermoplastic polymer having a Tg or softening temperature of at least 20° C. selected from the group consisting of:
- i. polystyrene or a co-polymer thereof having a Mw from about 500 g/mol to about 30,000 g/mol, and a polydispersity index (PDI) of less than 2;
- ii. polymethylmethacrylate or a co-polymer thereof having a Mw from about 500 g/mol to about 30,000 g/mol, and a PDI of less than 2;
- iii. polyacrylonitrile or a co-polymer thereof having a Mw from about 500 g/mol to about 30,000 g/mol, and a PDI of less than 2;
- wherein the platinum-group catalyst is fully encapsulated within the thermoplastic polymer.
4 more elements
Dependencies are inferred from the claim text.