Title:
METHOD FOR DYEING POLYAMIDE-BASED YARN PRODUCT
Document Type and Number:
Japanese Patent JP3083403
Kind Code:
B2
Abstract:
PURPOSE: To naturally drop pH of a dyeing bath with rise in temperature and to dye polyamide-based yarn products efficiently, uniformly and evenly by adding a specific pH adjustor to a dyeing bath.
CONSTITUTION: In dyeing a polyamide-based yarn product at ≥60°C by using a dyeing bath having an initial pH adjusted to pH 5-13, a pH adjustor of formula I [(n) is 0-3; X and Y are H, OH, Cl or Br with the proviso that X and Y are not H at the same time; R and R' are (CH2)m-CH3, group of formula II or formula III or 2-5C polyhydric alcohol residue; (m) is 0-2; (p) is 1-3; R" is H or CH3; Z is OH or Cl], pH of the bathing bath is naturally dropped with rise in temperature to efficiently provide the polyamide-based yarn products having excellent level dyeing properties. An ester compound of malic acid and an alcohol is preferable as the pH adjustor and a diester derivative of malic acid and ethylene glycol may be cited as the preferable example.
Inventors:
Ichiro Osawa
Shigeru Taniguchi
Shinji Adachi
Kazumi Nebu
Shigeru Taniguchi
Shinji Adachi
Kazumi Nebu
Application Number:
JP12126392A
Publication Date:
September 04, 2000
Filing Date:
April 14, 1992
Export Citation:
Assignee:
Meisei Chemical Industry Co., Ltd.
International Classes:
D06P1/38; D06P1/39; D06P1/651; D06P3/24; (IPC1-7): D06P3/24; D06P1/38; D06P1/39; D06P1/651
Domestic Patent References:
| JP340868A | ||||
| JP6228483A | ||||
| JP63196783A | ||||
| JP6017183A | ||||
| JP411083A | ||||
| JP60224884A | ||||
| JP5562046A |
Attorney, Agent or Firm:
Noriko Murata