Aqueous solution consisting of by weight 25 % or more, but not more than 40 % of a poly(isobutylene-maleic anhydride) modified with:

-N,N-dimethylpropane-1,3-diamine,

-a copolymer of ethylene oxide and propylene oxide, having aminopropyl and methoxy end-groups,

-ethanol
(CAS RN 497926-97-3)
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condition:B,certificate:9018,action:07|condition:B,action:27