Non-leaching adhesive system and its use in a liquid immersion objective

A process for the metal-to-metal and metal-to-glass adhesion by applying a coating of a curable, adhesive system, to the surfaces of parts to be joined, joining the thus coated surfaces of said parts and curing the combination, wherein the surfaces to be joined are pretreated with a surface activating agent before the application of the adhesive system, the curable, adhesive system consisting essentially of:

• (1) at least one monomer, polymerizable by free radical initiation, selected from the group consisting of:
• 2,2-bis[4-(3-acryloyloxy-2-hydroxypropoxy)phenyl]propane, 2,2-bis[4-(3-methacryloyloxy-2-hydroxypropoxy)phenyl]propane, diallylic ester of isophorone diisocyanate, triallyl cyanurate, triallyl isocyanurate, and di- and tri-allyl ethers of trimethylolpropane, norbornene monomers, trimethylolpropane trithiol, pentaerythritol tetrathiol and their ethoxylated homologues, mixtures of said monomers, and hybrid monomers of said monomers containing chemically different polymerizable groups in one monomer;
• provided that when said at least one monomer is a said thiol monomer, said thiol monomer is used in combination with at least one non-thiol monomer of said acrylate monomers, methacrylate monomers, allylic monomers, norbornene monomers, mixtures of said monomers, and/or hybrid monomers of said monomers;
• and
• (2) a polymerization initiator,
• said adhesive system being a non-leaching system which, when in contact with liquid or liquid film present in an application in which the cured adhesive system is used, does not leach compounds that are detrimental to the application.

Use of a curable, adhesive system, based on monomers for the adhesion of a metal film to another metal film or a glass substrate of a liquid immersion objective, to be used for the preparation of a substrate, in particular an optical master disc the curable, adhesive system consisting essentially of:

• (1) at least one monomer, polymerizable by free radical initiation, selected from the group consisting of:
• 2,2-bis[4-(3-acryloyloxy-2-hydroxypropoxy)phenyl]propane, 2,2-bis[4-(3-methacryloyloxy-2-hydroxypropoxy)phenyl]propane, diallylic ester of isophorone diisocyanate, triallyl cyanurate, triallyl isocyanurate, and di- and tri-allyl ethers of trimethylolpropane, norbornene monomers, trimethylolpropane trithiol, pentaerythritol tetrathiol and their ethoxylated homologues, mixtures of said monomers, and hybrid monomers of said monomers containing chemically different polymerizable groups in one monomer;
• provided that when said at least one monomer is a said thiol monomer, said thiol monomer is used in combination with at least one non-thiol monomer of said acrylate monomers, methacrylate monomers, allylic monomers, norbornene monomers, mixtures of said monomers, and/or hybrid monomers of said monomers;
• and
• (2) a polymerization initiator,
• said adhesive system being a non-leaching system which, when in contact with liquid or liquid film present in an application in which the cured adhesive system is used, does not leach compounds that are detrimental to the application.

A liquid immersion objective, to be used for the preparation of a substrate, in particular an optical master disc, comprising a stack of metal films (8), an immersion objective lens (5), being provided in a through-hole (9), in said stack of metal films, and a substrate (2), being provided with a photo-resist layer (4) facing the immersion lens (5), said photo-resist layer and the immersion lens being separated by a water film (1), the water supply channel (3) thereof being provided between and through said stack of metal films (8) such that said water supply channel discharges into the interface between said objective lens and said substrate, said metal films and immersion lens being mutually bonded by means of a curable, adhesive system the curable, adhesive system consisting essentially of:

• (1) at least one monomer, polymerizable by free radical initiation, selected from the group consisting of:
• 2,2-bis[4-(3-acryloyloxy-2-hydroxypropoxy)phenyl]propane, 2,2-bis[4-(3-methacryloyloxy-2-hydroxypropoxy)phenyl]propane, diallylic ester of isophorone diisocyanate, triallyl cyanurate, triallyl isocyanurate, and di- and tri-allyl ethers of trimethylolpropane, norbornene monomers, trimethylolpropane trithiol, pentaerythritol tetrathiol and their ethoxylated homologues, mixtures of said monomers, and hybrid monomers of said monomers containing chemically different polymerizable groups in one monomer;
• provided that when said at least one monomer is a said thiol monomer, said thiol monomer is used in combination with at least one non-thiol monomer of said acrylate monomers, methacrylate monomers, allylic monomers, norbornene monomers, mixtures of said monomers, and/or hybrid monomers of said monomers;
• and
• (2) a polymerization initiator,
• said adhesive system being a non-leaching system which, when in contact with liquid or liquid film present in an application in which the cured adhesive system is used, does not leach compounds that are detrimental to the application.

Use of a non-leaching, curable, adhesive system for the mutual adhesion of at least two bodies, selected from among the group, consisting of metal films, (quartz-)glass substrates, and polymeric films, for the manufacturing and/or assembling of catheters, biosensors and other biomedical devices likely to come into contact with fluids and tissue, the curable, adhesive system consisting essentially of:

• (1) at least one monomer, polymerizable by free radical initiation, selected from the group consisting of:
• 2,2-bis[4-(3-acryloyloxy-2-hydroxypropoxy)phenyl]propane, 2,2-bis[4-(3-methacryloyloxy-2-hydroxypropoxy)phenyl]propane, diallylic ester of isophorone diisocyanate, triallyl cyanurate, triallyl isocyanurate, and di- and tri-allyl ethers of trimethylolpropane, norbornene monomers, trimethylolpropane trithiol, pentaerythritol tetrathiol and their ethoxylated homologues, mixtures of said monomers, and hybrid monomers of said monomers containing chemically different polymerizable groups in one monomer;
• provided that when said at least one monomer is a said thiol monomer, said thiol monomer is used in combination with at least one non-thiol monomer of said acrylate monomers, methacrylate monomers, allylic monomers, norbornene monomers, mixtures of said monomers, and/or hybrid monomers of said monomers;
• and
• (2) a polymerization initiator,
• said adhesive system being a non-leaching system which, when in contact with liquid or liquid film present in an application in which the cured adhesive system is used, does not leach compounds that are detrimental to the application.