KR870001294B1 - Fulling processing method - Google Patents

Abstract

This invention relates to a processing method which gives softness to woolen goods. Woolen goods are processed with a resin composition, and then this is soaked in an acidmixt. at 80≰C for 10-30min. The acid mixt. is composed of 3wt. parts of 68% nitric acid and 1wt part of 34% hydrochloric acid. After the soaking, the woolen goode are wahsed, neutralized, dehydrated, dried, and then set by steam setting method to give final products.

Description

Shrinkage and felt prevention processing method of mother product

In the present invention, the mother product is coated with a specially formulated modified resin solution, and then treated with a mixed acid of nitric acid and hydrochloric acid to dissolve the coated resin, part of which penetrates into the simulated epidermal tissue, and the remaining resin on the surface is eliminated. The present invention relates to a novel processing method for eliminating shrinkage and felting of a product and at the same time improving the poor touch of wool products according to resin processing.

It has lost the unique touch of wool and has become a major obstacle to the quality of wool products.

Examples of wool pre-shrinkage methods include the Dylan method using monopersulfuric acid, the D.C.C.A method using organic chlorine compounds, the carri-permanganate salt method, and the resin processing method.

However, the previous three methods, except for resin processing methods, are difficult to be commercialized due to the limitations in washing resistance, so the resin processing methods are widely used in consideration of economical efficiency and workability.

However, the resin processing method, which covers the skin surface of wool with synthetic resin to remove the shrinkage and peeling of the wool, has excellent washing resistance, while the coated synthetic resin layer can damage the intrinsic touch or appearance of the wool. Therefore, it is a big obstacle to the high quality of wool products.

The purpose of the present invention is to maintain the original feel and appearance of wool while preventing shrinkage and felting in wool products.

The present inventors have specially manufactured on the basis of the fact that the synthetic resin is easily melted off when the resin processed wool product is treated with a mixed acid of nitric acid and hydrochloric acid while researching to melt away the resin from the resin processed wool product. When the wool product coated with the modified synthetic resin layer was treated with a mixed acid of nitric acid and hydrochloric acid, the treatment time and temperature were adjusted so that the molten modified resin penetrated into the skin's epidermal tissue and the rest was easily eliminated. Discovered to complete the present invention.

The present invention will be described in detail below.

(a) Preparation of modified resin for coating.

① 1000g of formalin is brought to PH 7 with ammonia water, and 300g of urea is added thereto. The temperature is raised to 70 ° C for 20 minutes and stirred at 70 ° C for 30 minutes.

② Next, 200g of phenol is mixed with 50cc of caustic soda (2 mol), 250g of melamine and 50cc of water to make PH 8.

③ The above mixed solution is slowly added dropwise to the initial condensate, stirred at high speed, heated to 85 ° C., and then reacted at 85 ° C. for 40 minutes to become a transparent resin.

④ Next, 200 g of didecyl dimeryl ammonium, 100 g of potassium hydroxide, 300 g of dimethyl cyclo tetra cyloxan (2 mol), 40 g of isoprophenol, 50 g of an emulsifier solution, and an appropriate amount of latex resin were added. Stir at high speed for 20 minutes (set to PH9).

While stirring the mixture of ④ slowly into the transparent resin solution of ⑤ and slowly dropping it for 25 minutes, the mixture is heated up to 95 ℃ over 20 minutes.

Then, the reaction was carried out at 95 ° C. for 1 hour with slow stirring, and cooled to 60 ° C. to obtain 350 g of a milky white modified emulsion resin.

Since the emulsion resin is alkaline, it is neutralized by adding 50 g of 5% acetic acid.

(b) Preparation of Mixed Acids

900 g of nitric acid at 68% concentration and 300 g of hydrochloric acid at 34% concentration are put in a metal container and subjected to exothermic reaction for 20 minutes to produce 1100 g of dark brown strong acid.

Next, the strong acid is transferred to a ceramic container.

Referring to the coating method of the modified resin prepared as described above and the treatment method by the mixed acid in detail based on the embodiment as follows.

EXAMPLE

Modified resin: 10g /

Softener: 5g /

Nonionic Surfactant: 3g /

2nd Ammonium Phosphate: 2% (by weight of resin)

Mixed with 1982cc of water to make a modified resin composition of 2.000cc, and immersed 50cm × 50cm of the test fabric, padded to 70% of pickle, dried at 100 ℃ for 10 minutes, and cured at 140 ℃ for 45 seconds. Coated.

Next, 2000 cc of a mixed acid 1-5% solution was prepared, and the solution was heated to 80 ° C.-95 ° C., and 5 g of nonionic surfactant was added thereto and stirred.

Then, the woolen specimen coated with the modified resin was put in the mixed acid solution and rotated for 10-30 minutes.

Drain the mixed acid solution, wash with 2000cc of water, add 15g of ammonia water, neutralize it, dehydrate, dry at 100 ℃ for 10 minutes, and steam set for 3 minutes.

Shrinkage and anti-settling effect of the wool processed by the present invention are as follows.

[Table 1] Contrast prevention effect

(Sample is 50cm × 50cm in size)

[Table 2] Felt prevention effect

However, 1) the above experiment was a washing test for 40 minutes at 40 ℃ in a non-ionic detergent 3% solution.

2) Sample is pure 2/56 ′ × 2/56, 12.5 OZ / Y Saxony.

In addition, the mother product treated by the processing method of the present invention did not change in strength and had excellent elasticity while having a unique touch of the mother product.

Claims (2)

The resin product was processed as a composition of the modified resin prepared as follows. 3 parts by weight of nitric acid at 68% concentration and 1 part by weight of hydrochloric acid at 34% were mixed to obtain a solution of 1-5%. The temperature was raised to 80 ° C-95 ° C. Method for preventing shrinkage and felting of the mother product, which is placed in the mixed acid solution and rotated for 10 minutes to 30 minutes, followed by washing, neutralizing, dehydrating and drying in the usual manner, and neutralizing and steam setting. bottom ① React 10 parts of formalin with 3 parts of urea to make an initial condensate of turbidity. ② Make a mixed solution with 2 parts of phenol, caustic soda, 2.5 parts of meramine and water. ③ Add the mixed solution of ② to the initial condensate of ① to make transparent resin at 85 ℃ for 40 minutes. ④ Mix and stir 2 parts of didecyl dimethyl ammonium, 1 part of potassium hydroxide, 3 parts of di methyl cycol tetra cyloxan, isopropenol, an emulsifier solution, and a latex resin. A mixture of ④ is added to the transparent resin of ⑤ to make milky white modified emulsion resin. The method of claim 1 wherein the modified resin composition is as follows. bottom Modified resin: 10g /

Softener: 5g /

Nonionic Surfactant: 3g /

2nd Ammonium Phosphate: 2% (by weight of resin) Water: 1982cc