Marking of products to establish identity and source
First Claim
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1. A method of monitoring or tracing a process chemical or specialty additive, said method comprising:
- (a) associating said chemical or said additive with a marker, said marker comprising a hapten covalently bound to a pre-formed polymeric compound, said marker being not already associated with said chemical or additive;
(b) obtaining a sample from the process or product in which said chemical or additive is employed; and
(c) measuring the concentration of the marker in said sample by subjecting said sample to an immunoassay specific for said marker.
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Abstract
In general, the invention features a method of marking a product for identification in which a marker, composed of a low molecular weight hapten covalently bound to a compound, is associated with the product. Where the marker is non-deleterious to the product, inert with respect to the product, and not already associated with the product. The invention also features hapten markers produced by covalently binding a hapten to a functional monomer and subsequently polymerizing the hapten-labeled monomer to form a hapten-labeled polymer.
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2 Claims
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1. A method of monitoring or tracing a process chemical or specialty additive, said method comprising:
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(a) associating said chemical or said additive with a marker, said marker comprising a hapten covalently bound to a pre-formed polymeric compound, said marker being not already associated with said chemical or additive; (b) obtaining a sample from the process or product in which said chemical or additive is employed; and (c) measuring the concentration of the marker in said sample by subjecting said sample to an immunoassay specific for said marker. - View Dependent Claims (2)
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Specification