Patent ID: 8617803

Claim:
A method of inhibiting non-specific adsorption to an object, comprising: reacting a polyoxyethylene monomethyl ether with p-toluenesulfonyl chloride in the presence of two or more amine compounds, thereby producing (A) a tosylated compound of polyoxyethylene monomethyl ether, wherein said two or more amine compounds are selected from the group consisting of trimethylamine hydrochloride, trimethylamine hydrobromide, trimethylamine hydrofluoride, trimethylamine sulfate, trimethylamine nitrate, trimethylamine phosphate, triethylamine, tripropylamine, and N,N,Nâ€²,Nâ€²-tetramethylethylenediamine; reacting (A) the tosylated compound of polyoxyethylene monomethyl ether with (B) a polyamine having either an amino group or an imino group, or both, in a total of 3 to 12, thereby producing a non-specific adsorption inhibitor; and treating a surface of an object with the non-specific adsorption inhibitor.