Patent ID: 9283514
Filing Date: 2016-03-15
CPC Classification: B01D,C02F,C10G,Y10T

Claim Text:
1. A method of making a silicone-based chemical filter for removing sulfur contaminants from air, comprising the step of: reacting at least one olefin and at least one polyhydrosiloxane to produce a cross-linked silicone membrane or coating via platinum catalyzed hydrosilation, wherein the step of reacting at least one olefin and at least one polyhydrosiloxane to produce a cross-linked silicone membrane or coating is performed in the presence of at least one porogen so that the cross-linked silicone membrane or coating is cross-linked around the at least one porogen, wherein the step of reacting at least one olefin and at least one polyhydrosiloxane to produce a cross-linked silicone membrane or coating includes the steps of: removing the at least one porogen from the cross-linked silicone membrane or coating to create pores in the cross-linked silicone membrane or coating, wherein the step of removing the at least one porogen from the cross-linked silicone membrane or coating includes the step of placing the cross-linked silicone membrane or coating in an acidified alcoholic solution to remove the at least one porogen, wherein the pores created in the cross-linked silicone membrane or coating have an average pore size selected within a range from approximately 100 Å to approximately 500 Å to facilitate selective removal of sulfur contaminants from air.