Ultraviolet Radiation Crosslinking of Silicones
Assignee3M Innovative Properties Company
InventorsRobin E. Wright, Margaux B. Mitera, Jayshree Seth
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Abstract
Methods of crossliiiking functional and nonfunctional silicones are described. The methods include exposing the silicones to ultraviolet radiation having a spectrum comprising at least one intensity peak below 240 nm in an inert atmosphere. Articles prepared by such methods, including release liners and adhesive articles are also described.
Claims22
A method of making a crosslinked silicone layer comprising:
- applying a layer of a composition comprising one or more non-acrylated polysiloxane materials on a substrate and exposing the layer to ultraviolet radiation wherein exposing the layer to ultraviolet radiation comprises exposing the layer to the radiant output of a low pressure mercury lamp or a low pressure mercury amalgam lamp.
3-5. (canceled)
A article comprising a substrate and a silicone layer adhered to at least a portion of at least one surface of the substrate, wherein the silicone layer comprises at least one ultraviolet radiation crosslinked non-acrylated polysiloxane material, wherein the ultraviolet radiation is conducted by exposing the silicone layer to the radiant output of a low pressure mercury lamp or a low pressure mercury amalgam lamp.
Dependencies are inferred from the claim text.