Case Study | How Zhishangbio Helps a Carpet Manufacturer Solution the Fading Problem
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Summary
This case study is a detailed account of our close cooperation with a Middle East-based high-end carpet producer. This manufacturer faces a serious issue of carpets fading rapidly in direct sunlight. The result is a 37% customer complaint rate and losses of over $1.2 million per year.
We have optimized a polypropylene-specific organic pigment formulation for high light resistance through systematic color science analysis.
Under simulated Dubai sun conditions, the color retention time has been extended to five years.
This case illustrates how scientific color solutions transform a product’s quality crisis into an advantage in the marketplace.
The Color Persistence Crisis in the High-end Carpet Market in the Middle East
1. Customer Profile
Al Nasser Textile Industries (ANTI), hereinafter referred as ANTI is a leader in high-end carpet manufacturing in the United Arab Emirates. It was established in 1998 and has a production capacity of more than 5 million square metres per year. The company is focused on supplying customized carpet solutions to five-star hotels and luxury residences as well as commercial complexes.
ANTI products are renowned for their intricate Middle Eastern traditional patterns and rich color layers. They sell at an average price of between $85 and $150 per square meter.
This high-end positioning makes any issues with quality unacceptable. The company received complaints at the beginning of 2021 about carpets fading, particularly those in areas that are exposed to sunlight, such as next to french windows in hotel lobbys, in sunshine rooms of villas, in shopping center atriums and elsewhere.
The seriousness of the problem
We have received a major complaint from a newly opened coastal hotel in Dubai, “ANTI’s Technical Director Mohammad Al Casimir told us during the first technical meeting.” After only 8 months of installation, the customized carpet in their lobby has noticeably faded in color, especially in the red and blue areas where the contrast of the pattern has decreased by more than 60%. This completely destroys the atmosphere carefully created by the interior designer
After internal investigation, the complaint concentration area: 88% of fading problems occur in areas with direct sunlight
The most easily faded colors are bright blue (C.I. Pigment Blue 15:3), magenta (C.I. Pigment Red 122), and bright yellow (C.I. Pigment Yellow 154), which begin to appear 6-9 months after installation and result in a color loss of 40-70% after 18 months
The replacement, compensation, and discount losses caused by fading issues amounted to 1.24 million US dollars.
2.Preliminary analysis and limitations of traditional solutions
Before contacting us, ANTI had tried various traditional solutions: they attempted to add 0.5-1.0% benzotriazole UV absorbers during the spinning process, which increased the cost by 8%, but only improved the light resistance by 15%, failing to solve the fundamental problem. We also attempted to shift from polypropylene fibers to more light resistant nylon fibers, but the cost increased by 35% and the anti mold and moisture properties of polypropylene were lost, which is crucial for humid environments in the Middle East.
“Al Casimir stated that we are faced with a dilemma. We can either accept high price increases or continue to harm our brand’s reputation. We need to find a solution which can maintain our cost-competitiveness while solving the fundamental problem. ”
We established a technical team in March 2021 with ANTI. We created a temporary team of two people who are responsible for the analysis of pigment chemical structures, three people who are responsible for the evaluation spinning and dyeing processes, and one person for the analysis of fiber pigment interfaces.
The “5Why method” and the fishbone chart were used to perform a systematic investigation into fading issues. We found that Dubai had an annual sunshine duration exceeding 3500 hours, with an average UV intensity of 0.85W/m2, which is 2.3x higher than in Europe. The area in which the carpet problem is located has an ultraviolet exposure daily of 145kJ/m2.
We quickly conducted laboratory tests and found that although the phthalocyanine blue and quinacridone red originally used by ANTI were stable under indoor light, the imine and carbonyl groups in their molecular structures would undergo photo oxidation reactions under strong ultraviolet radiation. And the pigment lacks surface modification for polypropylene fibers, with a dispersion uniformity of only 73% and a large amount of micro aggregation.
Scanning electron microscopy and energy spectrum analysis revealed the presence of microcracks at the interface between pigments and polypropylene substrates. Additionally, ultraviolet radiation accelerated the aging of the interface, causing pigment particles to “float” on the fiber surface and be more easily degraded by light. Antioxidants in fibers undergo side reactions with certain pigments, which instead promote photo oxidation.
3.Key finding: Chemical mechanism of photodegradation
Through electron spin resonance (ESR) and Fourier transform infrared spectroscopy (FTIR) analysis, we have identified the main fading mechanism:
1.Triggered by free radical chain reaction
UV+pigment molecules → pigment * (excited state)
Pigment *+O ₂ → Pigment-OO · (Peroxyradical)
Pigment – OO ·+another pigment molecule → Pigment – OOH+pigment·
(Chain reaction cycle)
2.Destruction of color chromophores
In phthalocyanine blue, the binding energy between the central metal ion and the ligand decreases, resulting in a change in the amount. The maximum absorption peak shifts from 630nm blue to 610nm, which is visually perceived as fading.
3.Physical color loss
Micronization of pigment particles, changes in light scattering characteristics, and decrease in color intensity
4.Solution | Development of customized high-performance pigment system
Based on problem analysis, we have developed clear solution goals and selected three core pigments for molecular level modification:
1.Blue system: stabilized phthalocyanine blue
The peripheral benzene ring of traditional copper phthalocyanine is prone to electrophilic substitution reaction under UV. We introduce halogen substituents and four chlorine atoms on the peripheral benzene ring of the phthalocyanine molecule to synthesize tetrachlorocopper phthalocyanine. We also use copper zinc mixed metal phthalocyanine to enhance the planar rigidity of the molecule.
2.Red System: Thickened Quinacridone
The carbonyl group of traditional quinacridone (C.I. pigment red 122) generates free radicals under UV/oxygen, enhances the intramolecular hydrogen bonding network through amide groups, adopts surface passivation treatment, and is surface coated with 3-aminopropyltriethoxysilane with a thickness of 20-40nm.
3.Yellow System: Benzimidazolone Yellow Nanoization
Benzimidazolone pigments (C.I. Pigment Yellow 154) have inherent high light resistance, but require optimization. We use supercritical CO ₂ technology to prepare nano dispersions, add steric hindrance amines as free radical scavengers, and form a synergistic protection system with organic UV absorbers (Tinuvin 234) to solve the problem of fading caused by insufficient modification of a single pigment.
5. Testing and validation: from laboratory to real-world applications
We have established a comprehensive testing matrix in accordance with international standards:
Equipment: Q-Sun Xe-3 Xenon Lamp Aging Test Chamber
Conditions: irradiance of 0.85W/m ² @ 340nm, blackboard temperature of 63 ° C, relative humidity of 30%
Cycle: Sampling every 200 hours, totaling 2000 hours
The experimental results show that the color difference almost changes
Dubai real-life testing
We also selected three typical environments in Dubai to establish outdoor testing stations: using unobstructed full sunlight, an annual average temperature of 28 ° C, and monthly color measurements. The result after six months is very ideal, with excellent and bright colors.
Three pilot productions were conducted at the ANTI factory from August to October 2021
First batch: 500 kilograms, used for process parameter optimization
Discovery: Spinning temperature needs to be increased by 5 ° C to 295 ° C to achieve optimal dispersion
Second batch: 2 tons, used for comprehensive performance testing
Result: All physical properties are equivalent to traditional products
Third batch: 10 tons, used for customer sample production
Application: Made 150 50 × 50cm carpet samples and distributed them to 15 potential customers for testing
6. Solved the problem of carpet fading caused by sunlight
The solution to the carpet fading issue by ANTI shows that scientific color material engineering can overcome seemingly insurmountable technical challenges. This project has not only helped restore the reputation of an expensive brand but has also set new standards in the industry, turning crises into advantages.
This case is a clear signal to the dye and pigment industries: simply offering colors in today’s highly competitive market is not enough. The customer wants a complete color system that considers performance, environmental factors, cost and sustainability. We must transform ourselves from chemical suppliers to material solutions partners, tackling challenges with our customers and creating value together.
Through continuous technological innovation, and through deep customer collaboration, we believe the dye and pigment industries will play an increasingly important role in the age of sustainable development. They will provide beautiful and durable color solutions to various industries and make the colors more vibrant and durable.
Manufacturer of Dyes and pigments
Zhishang Bio is a key partner in the global supply of surfactants, daily-use chemicals and other products. They focus on supplying high-purity and quality Dyes and pigments.
We provide stable, cost-effective, and efficient one-stop purchasing solutions to global customers. We understand how important a reliable supply is to your business. Therefore, we strive to be the best in all aspects.
We have a close relationship with the leading manufacturers in order to guarantee that our products are of high quality and meet industry standards. We are able, through our large-scale purchasing and efficient supply management, to offer customers highly competitive market prices. We also offer flexible quotes based upon the volume of the purchase to help them optimize their production costs.
Our services are characterized by a highly developed logistics system. We achieve visual tracking through multiple warehouse layouts and digital logistic management systems both at home and abroad. This allows us to support multimodal intermodal transport such as rail, road, and sea.
Our service system is designed around the needs of our customers. Our team of professionals responds quickly 7×24 hours per day. We offer personalized services such as product packaging and customized packaging according to customer needs. We focus on creating stable, long-term strategic partnerships with our clients in order to achieve mutual growth.
The logistics system is one of the core advantages of our services. Through multiple warehousing layouts and digital logistics management systems at home and abroad, we achieve visual tracking of the entire transportation process, supporting multimodal intermodal transportation such as sea, rail, and road, strictly ensuring delivery timeliness, and even safe and compliant professional distribution for dangerous goods transportation.
We are committed to building a customer-centric service system. Our professional team provides 7 × 24-hour rapid response, which not only provides precise technical support and after-sales guarantee, but also offers personalized services such as product packaging and customized packaging according to customer needs. We focus on establishing long-term and stable strategic partnerships with our clients, achieving mutual growth through continuous value creation
By choosing us, you are not only selecting a supplier; you are also choosing a partner that is dedicated to your success. We will be happy to offer you free samples and detailed technical support.
Shandong Zhishang Bio Co., Ltd
Zhishang Bio, a subsidiary of Zhishang Chemical Co., Ltd., was established in 2016 and is a new type of chemical enterprise that integrates research and development, production, and sales. Zhishang Bio always adheres to the concept of “integrity management, strict quality control, customer first”.
Through continuous efforts, significant breakthroughs have been made in industries such as pharmaceutical intermediates, pesticide intermediates, food additives, and cosmetic raw materials. The domestic trade team sells well throughout the country, while the foreign trade team is exported to more than 30 countries and regions including the United States, Russia, Spain, Brazil, and enjoys a global reputation.
Invited to participate in this exhibition, Zhishang Bio will comprehensively showcase the company’s strength and achievements in the research and development, production, and quality control of pharmaceutical and pesticide intermediates! At that time, our company will set up an CPHI exhibition at booth E12D29 at the venue, and we will take you to further understand our company’s advantageous products in detail!
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