Protein fiber low temperature neutral reduction bleaching method

A protein fiber, low temperature technology, applied in the field of dyeing and finishing, can solve the problems of high energy consumption, long process time and high production cost, and achieve the effect of avoiding cost increase and good water solubility.

Active Publication Date: 2019-01-11
HENAN INST OF ENG
6 Cites 1 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the reduction and bleaching of protein fibers needs to be processed under high-temperature alkaline conditions, which not only requires a long process time, high temperature, and low efficiency, but also consumes a lot of energy, causes great damage to protein fibers, and reduces production efficiency. The cost is high, and it d...
View more

Abstract

The invention discloses a protein fiber low temperature neutral reduction bleaching method. According to the protein fiber low temperature neutral reduction bleaching method, a rare earth chloride anda colorless aromatic compound with a relatively simple structure are subjected to complexing at a certain molar ratio so as to obtain a thiourea dioxide low temperature bleaching catalyst, a bleaching solution is prepared from thiourea dioxide and the thiourea dioxide low temperature bleaching catalyst, and bleaching of protein fiber is carried out at low temperature conditions. The protein fiberlow temperature neutral reduction bleaching method is capable of realizing protein fiber low temperature neutral bleaching, bleaching temperature is reduced, energy consumption is reduced, protein fiber damage is avoided, production efficiency is increased, and the obtained dyed protein fiber is excellent in whiteness and dyeing performance.

Application Domain

Textiles and paper

Technology Topic

DyeingEnergy consumption +5

Image

  • Protein fiber low temperature neutral reduction bleaching method
  • Protein fiber low temperature neutral reduction bleaching method
  • Protein fiber low temperature neutral reduction bleaching method

Examples

  • Experimental program(8)
  • Effect test(1)

Example Embodiment

[0024] Example 1
[0025] A low-temperature neutral reduction bleaching method for protein fibers, the steps are as follows:
[0026] (1) Preparation of low-temperature bleaching catalyst: weigh the rare earth chloride and the relatively simple colorless aromatic compound at a molar ratio of 1:1, and put the weighed cerium chloride and o-hydroxybenzoic acid into the In an Erlenmeyer flask with an appropriate amount of distilled water, heat to 40°C under ultrasonic conditions, and stir to make it completely dissolved. Then slowly pour the aqueous solution of cerium chloride into the aqueous solution of o-hydroxybenzoic acid under ultrasonic conditions of 40°C. After stirring for 10 minutes, add concentrated ammonia water to adjust the pH of the solution to 10, and then continue the ultrasonic stirring reaction for 60 minutes. The reacted aqueous solution is allowed to stand at room temperature for 48 hours. The resulting solution is filtered, dried, and ground to obtain a solid powder. ;
[0027] (2) Bleaching protein fibers: prepare a treatment solution consisting of 3g/L thiourea dioxide and 0.05g/L low-temperature bleaching catalyst, and put the protein fibers into the above treatment solution at a bath ratio of 1:10 at a temperature of 30°C Keep the temperature for 60min under the condition, take out the fiber, wash and dry thoroughly.

Example Embodiment

[0028] Example 2
[0029] A low-temperature neutral reduction bleaching method for protein fibers, the steps are as follows:
[0030] (1) Preparation of low-temperature bleaching catalyst: weigh the rare earth chloride and the colorless aromatic compound with a relatively simple structure at a molar ratio of 1:2, and weigh the ytterbium chloride and lutetium chloride (molar ratio 1:1). ), m-hydroxybenzoic acid and 1-hydroxy-2-naphthoic acid (molar ratio 1:1) were put into an Erlenmeyer flask containing an appropriate amount of distilled water, heated to 50°C under ultrasonic conditions, and ultrasonically stirred to completely dissolve them , And then slowly pour the aqueous solution of ytterbium chloride and lutetium chloride into the aqueous solution of m-hydroxybenzoic acid and 1-hydroxy-2-naphthoic acid under the condition of ultrasound at 60°C. After ultrasonic stirring for 10 minutes, add concentrated ammonia water to adjust the solution After the pH reaches 12, the ultrasonic stirring reaction is continued for 30 minutes, and the reacted aqueous solution is allowed to stand at room temperature for 48 hours. The resulting solution is filtered, dried, and ground to obtain a solid powder;
[0031] (2) Bleaching protein fibers: prepare a treatment solution consisting of 1g/L thiourea dioxide and 0.01g/L low-temperature bleaching catalyst, and put protein fibers into the above treatment solution at a bath ratio of 1:100 at a temperature of 40°C Keep the temperature for 30 minutes, take out the fiber, wash and dry thoroughly.

Example Embodiment

[0032] Example 3
[0033] A low-temperature neutral reduction bleaching method for protein fibers, the steps are as follows:
[0034] (1) Preparation of low-temperature bleaching catalyst: weigh the rare earth chloride and the relatively simple colorless aromatic compound in a molar ratio of 1:3, and weigh the yttrium chloride, praseodymium chloride, and neodymium chloride (mole Ratio 1:1:1) and 3,5-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 2,6-dihydroxybenzoic acid (molar ratio 1:1:1) were put into the appropriate amount of distilled water In the Erlenmeyer flask under ultrasonic conditions, heat to 50℃, and ultrasonically stir to completely dissolve it, and then slowly pour the aqueous solution of yttrium chloride, praseodymium chloride, and neodymium chloride under the condition of ultrasound at 50℃. 3. In the aqueous solution of 5-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, and 2,6-dihydroxybenzoic acid, ultrasonically stirred for 10 minutes and then drop concentrated ammonia water to adjust the pH of the solution to 8, and then continue the ultrasonic stirring reaction for 120 minutes. The reacted aqueous solution was allowed to stand at room temperature for 48 hours, and the resulting solution was subjected to a series of steps such as filtration, drying, and grinding to obtain a solid powder;
[0035] (2) Bleaching protein fibers: prepare a treatment solution consisting of 10g/L thiourea dioxide and 1g/L low-temperature bleaching catalyst, and put protein fibers into the above treatment solution at a bath ratio of 1:4, at a temperature of 40°C After keeping the temperature for 30 minutes, take out the fiber and wash and dry thoroughly.

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Similar technology patents

Water-based ink and special decoloring agent thereof

Owner:SHANGHAI WUZHIFENG INFORMATION TECH

Efficient cleaning powder

Owner:安徽唯宝印刷科技有限公司

Classification and recommendation of technical efficacy words

  • Good water solubility
  • avoid cost increase

Water soluble amphoteric ion copolymer and preparation process thereof

InactiveCN1861654AGood water solubilityGood tackiness
Owner:SOUTHWEST PETROLEUM UNIV

Use of dextrin in animal feeds

InactiveUS20070048432A1complex mechanismgood water solubility
Owner:ADM ALLIANCE NUTRITION

Preparation method of submicron CuS (copper sulphide) classification ball

InactiveCN102040239AGood water solubilityrich in content
Owner:GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +1

Method and device for identifying multiple touch points

InactiveCN102163108AGood user experienceavoid cost increase
Owner:GUANGDONG VTRON TECH CO LTD

Environment-friendly preparation method of polyamide microspheres

ActiveCN104045826Aavoid cost increaseavoid process complication
Owner:江苏瑞美福新材料有限公司

Pot for processing food

ActiveCN104207630Aavoid cost increaseFood tumbling violently
Owner:成都骏元科技发展有限责任公司

Lens barrel, imaging device and information terminal

InactiveCN102401970Aavoid cost increase
Owner:OLYMPUS CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products