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  Digital Catalogue for Technology and Products Development

   Technology and Product Development

    Basic Information

Technology developed: CHEMICALLY MODIFIED DYE FOR TEXTILES (TP19762280172)
Category: Nil
Details of Inventor(s):
Inventor Institution/Organization/Company Department Designation
Technical Application Area: Select One...
If 'Other', please specify:
Please give more details of new technical application area:
Indian Institute of Technology (IIT) Delhi
Affiliated Ministry: Institution Funding (Self Supported)
Type of technology development: Indigenous
Does the technology help in replacing any import items currently
procured from outside India?
Does the technology have export potential? 1
Category of Technology developed: Immediate Deployment
Stage of Development: Lab-scale
Please describe in detail including the TRL Level:


Applications: Wet processing of textiles is a severe environmental threat as it produces wastewaters rich in various toxic chemicals like synthetic dyes, dispersing agents, metal mordants and surfactants. It is very important to find alternative and renewable sources of chemicals that can clean-up environmental pollution. Replacement of synthetic dyes by natural colorants extracted from various plants is an area of interest because they are with eco-friendly, biodegradable and have low risk for human health and environment. An even more economical and environment friendly approach to cultivating such plants is using the by-products and wastes generated from food, timber and agricultural sectors such as berries, skins, shells, peels. In pineapple products processing, pineapple residue accounts for 30-42% of the pineapple processing wastes, usually discarded as a by-product which is a cause of waste of resources. In the current scenario it is important to take full advantage of the processing and pineapple residue. The current technology explores pineapple waste fruit top extract as the medium for acid dyeing and as a potential multifunctional natural dye source for wool fabrics. The process involves precipitation method in which flavonoid dyes present in pineapple fruit tops are allowed to undergo chemical reaction via chelation with Al (III) and Fe (II) metal salts. This method successfully demonstrated the potential of modified dyestuff to produce colorful, antioxidant and antimicrobial wool fabric. The dye also imparted good antioxidant and excellent antimicrobial effect against both S. aureus and E. coli. Application: 1. Medical garments 2. Sanitary garments 3. Military garments 4. Napkins and disposable wipes 5. Socks 6. Carpets
Advantages: 1. This method provides inexpensive multifunctional textile dye 2. This method is feasible alternative for synthetic agents in development of protective clothing. 3. Wool fabrics were imparted potent anti-bacterial property 4. Wool after dyeing with obtained colorants includes anti-oxidant effects 5. It is substitute of acidic dyeing medium for wool fabrics

    Technology Inputs:

Imported Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
Indigenous Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
Imported Raw Materials:
Raw Materials Year ITC-HS Code
Indigenous Raw Materials:
Raw Materials Year ITC-HS Code
Existing R&D Facilities used:
Facilities Year ITC-HS Code

    R&D Investment:

R&D investment (Rs. in Lakhs):                    
Indian Source (Rs.) Foreign Source (Rs.) Year
0 0 NA

   Patents & Publications:

Filed Patents (No.) Granted Patents (No.) Year
0 0 NA
Submitted (No.) Published (No.) Year
0 0 NA

    Commercialization Potential:

Who are the Potential Licensees?
What commercially available products address
the same problem?
Company Product Problem Addressed
Would you like to develop this invention further with
corporate research support?
Would you be interested in participating in cluster based
programs for commercialization research or business
planning for your invention?
      Submitted by: Anil Wali Date of Submission: 5-8-2020

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