CN104559299A - Process for preparing madder dye for dyeing clothes - Google Patents

Abstract

The invention relates to the field of clothes, and particularly relates to a process for preparing a madder dye for dyeing clothes, aiming at the problem of difficultly removing yellow pigment in madder. The process for preparing the madder dye for dyeing the clothes comprises the following steps: (1), washing 35 g of madder root with flowing water to remove mud on the surface of the madder root; (2), mixing 10 g of starch in 175 ml of water, cooking into a paste; (3), putting the madder root obtained in the step (1) into the paste obtained in the step (2), mixing and standing for 3 hours, then taking out the madder root, and washing to remove mash attached to the surface layer of the madder root; (4), freeze-drying the madder root taken out to obtain madder powder, mixing 2 g of madder powder with 200 ml of a 1g/L sodium hydroxide solution, subsequently heating to 80 DEG C, and filtering by constant-temperature heating for 35 minutes; and (5), collecting the filtrate to obtain the red dye. According to the process disclosed by the invention, yellow pigment in madder is effectively removed through the starch paste, and therefore madder can be used as a red dye.

Description

A kind of madder preparation technology for clothes dyeing

Technical field

The present invention relates to garment industry, especially relate to a kind of madder preparation technology for clothes dyeing.

Background technology

Madder (formal name used at school: Rubia cordifolia L.) the perennial climbing herb plant of Rubiaceae.Red-purple or orange red, cylindrical, meat, stem is coarse, spray four rib, has down raw spinule.Impeller is raw, Dan Ye; Avette or the ovum shape lanceolar of blade, blade face is coarse, and petiole differs in length, and spends faint yellow, cyme; Fruit maturation, black or atropurpureus.Be distributed in Korea, Japan, Russia this etc. the Far East Area.

Madder, except having pharmaceutical use, is also simultaneously important dyeing raw material, but due in madder except containing except red pigments, also have xanthein, while xanthein not easily remove, the Color tool of red pigments is had a significant impact.So how effectively to remove xanthein is using the important problem of madder as garment material.

Summary of the invention

The present invention is directed to the problem that the yellow pigment existed in madder is difficult to remove, provide a kind of madder preparation technology for clothes dyeing, comprise the following steps:

(1) get roots of madder 35g, rinse with flowing water, remove surface sludge,

(2) be mixed in 175ml water by the starch of 10g, boiling becomes pasty state,

(3) step (1) is processed the roots of madder obtained and put into the mashed prod that step (2) obtains, stir placement after 3 hours, take out roots of madder, and the mashed prod of top layer attachment is removed in cleaning;

(4) the roots of madder lyophilize of will take out, obtains madder powder, after being mixed by 2g madder powder, is heated to 80 degrees Celsius, thermostatically heating 35 minutes with the sodium hydroxide solution 200ml of 1g/L,

(5) filter, collect filtrate, be orchil.

The present invention, by starch paste, effectively can remove the yellow pigment in madder, thus realizes the possibility of madder as orchil.

Embodiment

Embodiment 1

For a madder preparation technology for clothes dyeing, comprise the following steps:

(1) get roots of madder 35g, rinse with flowing water, remove surface sludge,

(2) be mixed in 175ml water by the starch of 10g, boiling becomes pasty state,

(3) step (1) is processed the roots of madder obtained and put into the mashed prod that step (2) obtains, stir placement after 3 hours, take out roots of madder, and the mashed prod of top layer attachment is removed in cleaning;

(4) the roots of madder lyophilize of will take out, obtains madder powder, after being mixed by 2g madder powder, is heated to 80 degrees Celsius, thermostatically heating 35 minutes with the sodium hydroxide solution 200ml of 1g/L,

(5) filter, collect filtrate, be orchil.

Embodiment 2 silk fabric dyes

By silk first through degumming process, for subsequent use.Take madder according to 55% of silk weight, and prepare madder extracting solution according to the mode in embodiment 1.Madder extracting solution is put into Erlenmeyer flask, regulates pH to 3.5, silk, after 5 minutes, is put into, is dyeed 35 minutes, put into 0.05g Tai-Ace S 150, continue dyeing 60 minutes, take out, dry by 75 DEG C of concussion preheatings.

Color is good, uniform coloring, and accelerated test is without fading.

Embodiment 3 wool fabric dyeing

The mode of wool fabric according to embodiment 2 is dyeed.

Color is good, uniform coloring, and accelerated test is without fading.

Claims (1)

1., for a madder preparation technology for clothes dyeing, it is characterized in that, comprise the following steps:

(1) get roots of madder 35g, rinse with flowing water, remove surface sludge,

(2) be mixed in 175ml water by the starch of 10g, boiling becomes pasty state,

(3) step (1) is processed the roots of madder obtained and put into the mashed prod that step (2) obtains, stir placement after 3 hours, take out roots of madder, and the mashed prod of top layer attachment is removed in cleaning;

(4) the roots of madder lyophilize of will take out, obtains madder powder, after being mixed by 2g madder powder, is heated to 80 degrees Celsius, thermostatically heating 35 minutes with the sodium hydroxide solution 200ml of 1g/L,

(5) filter, collect filtrate, be orchil.