Improver for resistance of ester group-containing resin to microbe-caused deterioration, method for improving said resistance and resin composition having resistance to microbe-caused deterioration
The present invention provides: an improver for resistance of ester group-containing resin to microbe-caused deterioration, which contains, as a main component, a carbodiimide compound represented by the general formula (1) R1-NCN-R2, (2) OCN-R3-(NCN-R4)n-NCO, (3) R5-NCN-R6-(NCN-R7)n-NCN-R8, or (4) R9-R10-(NCN-R11)n-R12. a method for improving the resistance of ester group-containing resin to microbe-caused deterioration, which comprises mixing an ester group-containing resin or reacting part of said resin with at least one of the carbodiimide compounds of the above general formulas (1) to (4), and a resin composition having a resistance to microbe-caused deterioration, which is obtained by mixing an ester group-containing resin or reacting part of said resin with at least one of the carbodiimide compounds of the above general formulas (1) to (4). The improver of the present invention, when added to an ester group-containing resin, can allow the resin to have an improved resistance to microbe-caused deterioration.
