Temperature changes over the range of 5 to 60 degrees C do not affect the fundamental dissociation constants of carboxylic polymers. A comparison of the rate of half-neutralization of polymers of varying structures shows that the methacrylic polymers are markedly slower than acrylic over the entire range of temperatures investigated. Interestingly, the half-neutralization of macroporous polymers is also slower than gel polymers of similar water retention. The rapid rate of sodium exchange by carboxylic polymers at 60 degrees C suggests their possible use in high-temperature condensate polishing systems, particularly in BWR plants where sulfate shedding by sulfonic acid resins is a problem.