Gentle to skin adhesive

1. An adhesive comprising a radiation cured silicone gel, wherein the adhesive is prepared without a catalyst, wherein the silicone gel comprises a crosslinked poly diorganosiloxane material and a noncrosslinked poly diorganosiloxane fluid, wherein the poly diorganosiloxane material consists of one or more non-functional poly diorganosiloxanes, and wherein the adhesive further comprises a silicate resin tackifier.

2. The adhesive of claim 1 , wherein the crosslinked poly diorganosiloxane material consists of a crosslinked poly dimethylsiloxane material and the noncrosslinked poly diorganosiloxane fluid consists of a noncrosslinked poly dimethylsiloxane fluid.

3. The adhesive of claim 1 , wherein the one or more non-functional poly diorganosiloxanes consist of one or more non-functional poly dimethylsiloxanes.

4. The adhesive of claim 1 , wherein the adhesive has a 180 degree peel adhesion from human skin of no greater than 200 grams per 2.54 centimeters as measured according to the Skin Peel Adhesion Procedure.

5. A medical article comprising a layer of the adhesive according to claim 1 adhered to a medical substrate.

6. The article of claim 5 , wherein the layer has a thickness of 51 to 200 microns.

7. The adhesive of claim 1 , wherein the silicate resin tackifier is present in an amount of no more than 35 parts by weight.

8. The article of claim 7 , wherein the layer has a thickness of 51 to 200 microns.

9. The adhesive of claim 1 , wherein the silicate resin tackifier is present in an amount of less than 45 parts per hundred.

10. An adhesive comprising a radiation cured silicone gel, wherein the adhesive is prepared without a catalyst, wherein the silicone gel comprises a crosslinked poly diorganosiloxane material and a noncrosslinked poly diorganosiloxane fluid, wherein the poly diorganosiloxane material consists of one or more non-functional poly diorganosiloxanes, and wherein the adhesive comprises a poly(dimethylsiloxane-oxamide) linear copolymer.

11. An adhesive formed by exposing a composition comprising a poly diorganosiloxane material to at least one of electron beam irradiation and gamma irradiation at a sufficient dose to crosslink the poly diorganosiloxane material and form a radiation cured silicone gel, wherein the silicone gel comprises a crosslinked poly diorganosiloxane material and a noncrosslinked poly diorganosiloxane fluid, wherein the adhesive is prepared without a catalyst, wherein the poly diorganosiloxane material consists of one or more non-functional poly diorganosiloxanes, and wherein the adhesive further comprises a silicate resin tackifier.

12. The adhesive of claim 11 , wherein the crosslinked poly diorganosiloxane material consists of a crosslinked poly dimethylsiloxane material and the noncrosslinked poly diorganosiloxane fluid consists of a noncrosslinked poly dimethylsiloxane fluid.

13. The adhesive of claim 11 , wherein the silicate resin tackifier is present in an amount of no more than 35 parts by weight.

14. A medical article comprising a layer of the adhesive according to claim 11 adhered to a medical substrate.

15. The adhesive of claim 11 , wherein the silicate resin tackifier is present in an amount of less than 45 parts per hundred.

16. An adhesive formed by exposing a composition comprising a poly diorganosiloxane material to at least one of electron beam irradiation and gamma irradiation at a sufficient dose to crosslink the poly diorganosiloxane material and form a radiation cured silicone gel, wherein the silicone gel comprises a crosslinked poly diorganosiloxane material and a noncrosslinked poly diorganosiloxane fluid, wherein the adhesive is prepared without a catalyst, and wherein the adhesive further comprises a poly(dimethylsiloxane-oxamide) linear copolymer.

17. An adhesive comprising a radiation cured silicone gel, wherein the adhesive is prepared without a catalyst, wherein the silicone gel comprises a crosslinked poly diorganosiloxane material and a noncrosslinked poly diorganosiloxane fluid, wherein the adhesive further comprises a hydrophilic polymer.

18. A method of adhering a medical article to a biological substrate, the method comprising:

providing a poly diorganosiloxane material consisting of one or more non-functional poly diorganosiloxanes;

radiation curing the poly diorganosiloxane material without a catalyst to form an adhesive comprising a radiation cured silicone gel, wherein the silicone gel comprises a crosslinked poly diorganosiloxane material and a noncrosslinked poly diorganosiloxane fluid;

adhering the adhesive to a medical substrate to form a medical article; and

adhering the medical article to a biological substrate.

19. The method of claim 18 , wherein the biological substrate is human skin.

20. A method of adhering a medical article to a biological substrate, the method comprising:

providing a poly dimethylsiloxane material consisting of one or more non-functional poly dimethylsiloxanes;

radiation curing the poly dimethylsiloxane material without a catalyst to form an adhesive comprising a radiation cured silicone gel, wherein the silicone gel comprises a crosslinked poly dimethylsiloxane material and a noncrosslinked poly dimethylsiloxane fluid;

adhering the adhesive to a medical substrate to form a medical article; and

adhering the medical article to a biological substrate.

21. The method of claim 18 , wherein the biological substrate is human skin.