Nontoxic antifouling systems
First Claim
1. An article comprising a substrate, a silicone rubber bonding layer of about 15 microns or more in thickness which is a reaction product comprising an organopolysiloxane containing terminal silicon-bonded hydroxyl groups and a polymerizable vinyl aromatic compound bonded to said substrate;
- and a silicone rubber release layer of about 20 microns or more in thickness which is a reaction product comprising an organopolysiloxane containing terminal silicon-bonded hydroxyl groups bonded to said bonding layer, said release layer is characterized by quasi mechanical toughness that is imparted to said release layer by said bonding layer which said release layer does not have in absence of said bonding layer, said release layer is damaged when an attempt is made to separate it from said bonding layer, said release layer has better release properties than polytrafluoroethylene, and the bond between said bonding layer and said release layer cannot be broken manually by a finger nail.
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Accused Products
Abstract
A nontoxic antifouling system is provided at ambient conditions on a subste which has a solid release layer bonded to a solid bonding layer which in turn is bonded to said substrate. The release layer has excellent release property and is bonded to the bonding layer. The bonding layer contains a component which is believed to react with the same or a similar component in the release layer to enhance the desired bond therebetween. The bonding layer is tougher than the release layer but its release property is inferior to that of the release layer.
33 Citations
21 Claims
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1. An article comprising a substrate, a silicone rubber bonding layer of about 15 microns or more in thickness which is a reaction product comprising an organopolysiloxane containing terminal silicon-bonded hydroxyl groups and a polymerizable vinyl aromatic compound bonded to said substrate;
- and a silicone rubber release layer of about 20 microns or more in thickness which is a reaction product comprising an organopolysiloxane containing terminal silicon-bonded hydroxyl groups bonded to said bonding layer, said release layer is characterized by quasi mechanical toughness that is imparted to said release layer by said bonding layer which said release layer does not have in absence of said bonding layer, said release layer is damaged when an attempt is made to separate it from said bonding layer, said release layer has better release properties than polytrafluoroethylene, and the bond between said bonding layer and said release layer cannot be broken manually by a finger nail.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An article comprising a substrate, a silicone rubber bonding layer bonded to said substrate, and a silicone rubber release layer bonded to said bonding layer;
- said bonding layer is a reaction product comprising an organopolysiloxane, a monofunctional monomer selected from the group consisting of vinyl aromatic compounds, a polyfunctional monomer selected from the group consisting of monomers having functionality of at least two, a free radical initiator selected from the group consisting of organic peroxide initiators, and a curing agent;
said release layer is a reaction product comprising an organopolysiloxane containing terminal silicon-bonded hydroxyl groups. - View Dependent Claims (14, 15, 16, 17, 18, 20)
- said bonding layer is a reaction product comprising an organopolysiloxane, a monofunctional monomer selected from the group consisting of vinyl aromatic compounds, a polyfunctional monomer selected from the group consisting of monomers having functionality of at least two, a free radical initiator selected from the group consisting of organic peroxide initiators, and a curing agent;
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19. An article comprising a substrate, a silicone rubber bonding layer of about 15 microns or more in thickness which is a reaction product comprising an organopolysiloxane and a polymerizable vinyl aromatic compound bonded to said substrate;
- and a silicone rubber release layer of about 20 microns or more in thickness which is a reaction product comprising an organopolysiloxane bonded to said bonding layer, the organopolysiloxane in said bonding layer and in said release layer contains terminal silicon-bonded hydroxyl groups, said release layer has better release properties than polytrafluoroethylene, said release layer is characterized by quasi mechanical toughness that is imparted to said release layer by said bonding layer which said release layer does not have in absence of said bonding layer, said release layer is damaged when an attempt is made to separate it from said bonding layer, and the bond between said bonding layer and said release layer cannot be broken manually by a finger nail.
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21. An article comprising a substrate, a silicone rubber bonding layer of about 15 microns or more in thickness which is a reaction product comprising an organopolysiloxane containing terminal silicon-bonded hydroxyl groups and styrene bonded to said substrate;
- and a silicone rubber release layer of about 20 microns or more in thickness which is a reaction product comprising an organopolysiloxane containing terminal silicon-bonded hydroxyl groups bonded to said bonding layer, said release layer is characterized by quasi mechanical toughness that is imparted to said release layer by said bonding layer which said release layer does not have in absence of said bonding layer, said release layer is damaged when an attempt is made to separate it from said bonding layer, said release layer has better release properties than polytrafluoroethylene, and the bond between said bonding layer and said release layer cannot be broken manually by a finger nail.
Specification