Immunoadsorptive surface coating for solid-phase immunosubstrate and solid-phase immunosubstrate

Claim 2

A solid-phase immunoreactive immunosubstrate for use in immunological assay determinations comprising: a solid-phase surface; a water based emulsion of dispersed latex polymer beads coating said surface and including latex polymer beads, water and an emulsifying agent to promote the emulsification of said beads within said water, said beads being of microdiameter size and composed of one of the substances from the group consisting of acrylic polymers, polyvinyl acetate polymers and butediene-styrene copolymers, and formed with a diameter of from 0.1 microns up to 1.0 microns, said coating further including a source of light scattering centers added to said coating to improve its fluorescent properties, whereby the concentration by weight of the components of said coating is approximately 15% light scattering centers, 15% polymer beads, 69% water and a 1% emulsifying agent; an overcoating disposed over said coating and composed of a liquid emulsion having a composition by weight which includes 10-20% light scattering centers and 16-25% latex polymer beads of substantially identical size to those contained in said coating, plus a water vehicle in an amount sufficient to equal 100%, and having added to each 100 milliliters thereof, 0.5 grams of carboxymethyl cellulose, 1 milliliter of polyvinyl alcohol and 1 milliliter of hydroxypropylmethyl cellulose; and an immunoreagent applied to at least one of said coating and said overcoating and adsorbed thereto to form an immunoreactive immunosubstrate for use in specific immunoreactions which require said immunoreagent.

Claim 3

A solid-phase immunoreactive immunosubstrate for use in immunological assay determinations comprising: a solid-phase surface; a water based emulsion of dispersed latex polymer beads coating said surface and including latex polymer beads, water and an emulsifying agent to promote the emulsification of said beads within said water, said beads being of microdiameter size and composed of one of the substances from the group consisting of acrylic polymers, polyvinyl acetate polymers and butediene-styrene copolymers, and formed with a diameter of from 0.1 microns up to 1.0 microns, said coating further including a source of light scattering centers added to said coating to improve its fluorescent properties; said coating further including preservatives, surfactants, pH buffers, fungicides and defoamers, whereby the concentration by weight of the components of said coating is approximately 11% latex polymer beads, 11.3% light scattering centers, 0.5% preservatives, 0.1% pH buffers, 0.5% fungicides, 0.5% defoamers, 4.0% surfactants, 1.0% emulsifying agents, 0.01% immunoreagent and 71.09% water; and an overcoating disposed over said coating and composed of a liquid emulsion having a composition by weight which includes 10-20% light scattering centers and 12-25% latex polymer beads of substantially identical size to those contained in said coating, plus a water vehicle in an amount sufficient to equal 100%, and having added to each 100 milliliters thereof, 0.5 grams of carboxymethyl cellulose, 1 milliliter of polyvinyl alcohol and 1 milliliter of hydroxypropylmethyl cellulose.

Claim 4

A solid-phase immunoreactive immunosubstrate for use in immunological assay determinations comprising: a solid-phase surface; a water based emulsion of dispersed latex polymer beads coating said surface and including latex polymer beads, water and an emulsifying agent to promote the emulsification of said beads within said water, said beads being of microdiameter size and composed of one of the substances from the group consisting of acrylic polymers, polyvinyl acetate polymers and butediene-styrene copolymers, and formed with a diameter of from 0.1 microns up to 1.0 microns, said coating further including a source of light scattering centers added to said coating to improve its fluorescent properties; said coating further including preservatives, surfactants, pH buffers, fungicides and defoamers, whereby the concentration by weight of the components of said coating is approximately 11% latex polymer beads, 11.3% light scattering centers, 0.5% preservatives, 0.1% pH buffers, 0.5% fungicides, 0.5% defoamers, 4.0% surfactants, 1.0% emulsifying agents, 0.01% immunoreagent and 71.09% water; and an overcoating disposed over said coating and composed of a liquid emulsion having a composition by weight which includes 10-20% light scattering centers and 12-25% latex polymer beads of substantially identical size to those contained in said coating, plus a water vehicle in an amount sufficient to equal 100%, and having added to each 100 milliliters thereof, 0.5 grams of carboxymethyl cellulose, 1 milliliter of polyvinyl alcohol and 1 milliliter of hydroxypropylmethyl cellulose.