CLEANING AGENT COMPOSITION FOR MEDICAL-INSTRUMENT CLEANER

摘要

The present invention relates to [1] a detergent composition for a washer for medical devices, including a nonionic surfactant (A) represented by the following formula (1), at least one compound (B) selected from the group consisting of fatty acids having not less than 6 and not more than 10 carbon atoms or salts thereof, a cationic surfactant (C) represented by the specific formula, and water; and [2] a method of washing a medical device using a washer for medical devices which includes the step of washing the medical device with a mixture including the above detergent composition and an enzyme. The present invention provides a detergent composition for a washer for medical devices which is less foamed even when used at a low temperature and is excellent in washability and storage stability, and a method of washing a medical device using a washer for medical devices,;RO-[(EO)m/(PO)n]—H  (1);wherein R represents an alkyl group having not less than 6 and not more than 18 carbon atoms; EO represents an ethanediyloxy group; PO represents a propanediyloxy group; m and n each represent an average molar number of addition of the ethanediyloxy or propanediyloxy group, and are each independently a number of not less than 1 and not more than 20; and the mark “/” represents that EO and PO may be added either in a random form or in a block form, and an order of addition of EO and PO is optional.

主权项

1. A detergent composition for a washer for medical devices, comprising a nonionic surfactant (A) represented by the formula (1) which is contained in the composition in an amount of not less than 1% by mass and not more than 40% by mass; at least one compound (B) selected from the group consisting of fatty acids having not less than 6 and not more than 10 carbon atoms and salts thereof which is contained in the composition in an amount of not less than 1% by mass and not more than 20% by mass in terms of a fatty acid; a cationic surfactant (C) represented by the formula (2); and water,
the nonionic surfactant (A) being present in an amount of not less than 90% by mass on the basis of a total amount of whole nonionic surfactants contained in the detergent composition, a mass ratio of the at least one compound (B) selected from the group consisting of fatty acids having not less than 6 and not more than 10 carbon atoms and salts thereof to the cationic surfactant (C) [(B)/(C)] being not less than 20 and not more than 3000, and the detergent composition having a pH value of not less than 10 as measured at 25° C.,
RO-[(EO)m/(PO)n]—H  (1)wherein R represents an alkyl group having not less than 6 and not more than 18 carbon atoms; EO represents an ethanediyloxy group; PO represents a propanediyloxy group; m and n each represent an average molar number of addition of the ethanediyloxy or propanediyloxy group, and are each independently a number of not less than 1 and not more than 20; and the mark “/” represents that EO and PO may be added either in a random form or in a block form, and an order of addition of EO and PO is optional, and
N+(R1)(R2)(R3)(R4).X−  (2)wherein R1, R2, R3 and R4 are each independently an alkyl group having not less than 1 and not more than 24 carbon atoms or a benzyl group; and X− is a monovalent anion.