Protective coating on concrete construction

Details Protective coating on concrete construction Protective coating on concrete construction

C - Chemistry, Metallurgy

04

B

117/195

C04B 41/63 (2006.01) B05D 7/24 (2006.01) C04B 41/71 (2006.01) C08G 18/10 (2006.01) C08G 18/36 (2006.01) C08G 18/40 (2006.01) C08G 18/48 (2006.01) C08G 18/62 (2006.01) C08G 18/65 (2006.01) C08G 18/69 (2006.01) E04B 1/66 (2006.01)

Patent

CA 1290631

ABSTRACT OF THE DISCLOSURE A method of forming a protective coating on concrete or mortar construction which comprises coating said construc- tion with a polyurethane coating composition comprising (A) a polyol component having an average hydroxyl number from 30 to 450 mg KOH/g, or a mixture of a polyol component and a polyamine component having the sum of average hydroxyl number and average amine number of from 30 to 450 mg KOH/g; and (B) an organic polyisocyanate curing agent, the proportion of said component (B) in terms of the NCO equiva- lent thereof relative to the active hydrogen equivalent of said component (A) being from 0.6 to 1.5. - 31 -

508933

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