The West Indies, who go into the third and final match of the series in Hubli next week leading 1-0, began the last day on 28 for no loss after having gained a first innings lead of 47 runs and seemed content to bat through the day with no result possible.
Brathwaite, who had made 82 in the first innings, carried on to score a century to complete a fine match for himself while Deonarine kept him company for 144 runs for the third wicket after the early dismissals of Kieran Powell (14) and Kirk Edwards (2).
Veteran seamer Zaheer Khan, returning after an injury-induced layoff, failed to make an impact.
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