Adhesives/sealants with high electrical resistance
OwnerMichael Schaetzle, Gabriele Bride +2inventors
InventorsMichael Schaetzle, Gabriele Bride, Wolfgang Goldberger, Horst Beck
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Abstract
Solutions of non-functional thermoplastic polymers in preferably high-boiling dissolving agents/plasticizers are suitable as additive additions in high-strength adhesives/sealant comprising high percentages of carbon black as a reinforcing filler for windscreen glazing in automobile construction for increasing the electrical resistance and thus for improving the electrical properties of antennae integrated into the vehicle windscreens.
Claims20
A one- or two-component reactive adhesive/sealant composition comprising a reactive binder, more than 10 wt. % of the total composition of carbon black as a reinforcing filler and a solution of at least one non-functional thermoplastic polymer in at least one dissolving agent.
A one- or two-component reactive adhesive/sealant composition comprising a reactive binder comprising a prepolymer with reactive isocyanate groups or reactive silane groups selected from the group consisting of alkoxysilanes, acetoxysilanes, silazanes, oximatosilanes, and combinations thereof, 15 to 25 wt. % of the total composition of carbon black as a reinforcing filler and a solution of at least one non-functional thermoplastic polymer selected from the group consisting of vinyl chloride homo- and copolymers, ethylene-vinyl acetate copolymers, (meth)acrylic acid ester homo- and copolymers, atactic and isotactic poly-α-olefins, polycarbonates, polyesters, phenolic resins, styrene homo- and copolymers and mixtures thereof in at least one high-boiling dissolving agent selected from the group consisting of ethyl acetate, isoparaffins, dialkyl phthalates, dialkyl adipates, dialkyl sebacates, alkyl, aryl and alkyl aryl phosphates, alkylsulfonic acid phenyl esters, mineral oil and mixtures thereof, wherein the ratio of non-functional thermoplastic polymer to high-boiling dissolving agent is from 2:1 to 1:50.
A method for increasing the electrical resistance of a one-or two-component adhesive/sealant comprised of a reactive binder and more than 10 wt. % of the total composition of carbon black as a reinforcing filler, said method comprising a step of combining said one- or two-component composition with a solution of at least one non-functional thermoplastic polymer in at least one dissolving agent.
Dependencies are inferred from the claim text.