초록 ▼

A robust, nontoxic, antifouling coating and process for making the same are disclosed. The antifouling coating comprises a basecoat formed typically from a polyol and a polyiisocyanate wherein a molar excess of polyiisocyanate is typically used. A topcoat is formed on the basecoat by reacting the ba

A robust, nontoxic, antifouling coating and process for making the same are disclosed. The antifouling coating comprises a basecoat formed typically from a polyol and a polyiisocyanate wherein a molar excess of polyiisocyanate is typically used. A topcoat is formed on the basecoat by reacting the basecoat with aliphatic branched or unbranched diol.

대표청구항 ▼

A process (I) for making an antifouling coating comprising the steps of: (1) forming a basecoat bonded to a substrate by reacting a diol (A) having the structure: HO－(CH2)n－OH (A) with a molar excess of a diisocyanate (B) having the structure: OCN－(CH2)yNCO (B) wherein each of integers n and y are g

A process (I) for making an antifouling coating comprising the steps of: (1) forming a basecoat bonded to a substrate by reacting a diol (A) having the structure: HO－(CH2)n－OH (A) with a molar excess of a diisocyanate (B) having the structure: OCN－(CH2)yNCO (B) wherein each of integers n and y are greater than or equal to six; said basecoat having unreacted OCN－groups; and (2) forming a polyethylene topcoat on said basecoat by reacting a diol (C) with said basecoat, said diol (C) being selected from the group consisting of HO－(CH2)n′－OH (C1); branched aliphatic diol having a molecular weight between about 118-10,000 grams (C2); and mixtures thereof; wherein said n′is an integer greater than or equal to six, in an amount sufficient to react with at least 30% of said unreacted OCN－groups of said basecoat, thereby forming an essentially non-polar polyethylene topcoat covalently bonded to said basecoat.