HiSiaddi is an innovative foreign trade service provider driven by both technology transformation and export business. We have established a service system formulated as "1+2+3+4=1" and can supply genuine raw materials of Photoinitiator 1173 from multiple well-known brand manufacturers.
As a technology R&D-oriented foreign trade enterprise, HiSiaddi has conducted multiple rounds of on-site inspections of Photoinitiator 1173 manufacturers through cooperation with factories on technology conversion, developing objective, in-depth insights into various brands. We regularly analyze Photoinitiator 1173 manufacturers for clients to help them source suitable products. Below is a brand recommendation case.
For additional comparative analysis of brands and grades, please contact HiSiaddi customer service.
Purchaser: CARCOAT GmbH, a German specialized listed enterprise manufacturing OEM automotive clear coats, transparent UV coatings for lamp housings and matte interior automotive coatings, supplying original equipment parts coatings for Mercedes-Benz, BMW and Volkswagen. All products comply with EU REACH, German DIN automotive coating standards, ELV automotive environmental directives and low-VOC low-precipitation control regulations. The client previously purchased original Omnirad 1173 from IGM as its regular Photoinitiator 1173, with an annual procurement volume of 95 tons.
Driven by price hikes from European manufacturers and extended lead times of up to 55 days, the client launched a localized substitution project for domestically produced 1173. The client independently contacted five major domestic listed chemical manufacturers: Jiu Ri New Materials, Qiangli New Materials, Yangfan New Materials, Lianlong and Gurun Technology for inquiries and sample selection. A widespread industry challenge emerged: sales representatives at each manufacturer only promoted their own full product lines, politely avoiding criticism of competitors yet refusing to objectively explain competitors’ product strengths, applicable scenarios and drawbacks. Every manufacturer claimed their products were the best fit for premium automotive coatings, leaving the client without impartial benchmarking data on purity, volatile content, yellowing coefficient, thermal stability and precipitation indices. Eight distinct sample grades led to repeated failed small-scale trials, stalling the material selection project. The client entrusted HiSiaddi to conduct neutral full-brand evaluation and targeted grade screening.
Mandatory Material Selection Standards for Mid-to-high-end Automotive Coatings (Distinct from Civil Low-end Wood Coatings):
1. Main content ≥99.85%, single organic impurities ≤5 ppm, color ≤15 APHA;
2. Low volatility and minimal small-molecule precipitation to prevent white haze on lamp housing coatings after high-temperature exposure and interior coating odors;
3. Ultra-low yellowing and long-term outdoor weather resistance for transparent automotive top clear coats;
4. Ability to issue English COA, REACH registration documentation and third-party SGS full-spectrum test reports.
· Grade ①: JRCure 1103 (General Industrial Grade 1173): Purity 99.0%, conventional rectification process. Advantages: Stable mass production, abundant off-the-shelf inventory;
· Drawbacks: High residual light fractions and excessive trace volatiles, only suitable for wood and ordinary plastic coatings, incompatible with premium transparent automotive coatings;
· Grade ②: JRCure 1103-HP (High-purity Refined 1173): Deep negative-pressure rectification, purity 99.90%, impurities ≤4 ppm, excellent anti-yellowing performance. Advantages: Superior anti-UV aging and consistent batch performance; Drawbacks: Premium pricing, 7–10 day lead time for small-batch customized production.
· Grade ①: TR-1173 (Standard Industrial Grade): National standard purity of 99.1%, targeted at inks and ordinary hardware coatings;
· Drawbacks: Average high-temperature thermal stability with trace small-molecule precipitation risk under high heat;
· Grade ②: TR-1173-F (Food / Automotive Refined Grade): Produced on dedicated customized rectification lines with low volatility and low precipitation, impurities ≤3.5 ppm, designated by the manufacturer for electronic encapsulation and premium automotive coatings. Advantages: Low oxygen inhibition and uniform curing; Drawbacks: Limited routine inventory, produced against order schedules.
· Grade ①: General PI-1173: 98.8% purity, targeted at mass-market domestic UV coatings with cost advantages;
· Drawbacks: Elevated color (30–40 APHA) and high yellowing coefficient, prone to yellow discoloration in transparent premium coatings;
· Grade ②: PI-1173-UH Ultra-high-purity Grade: 99.88% purity, designed for PCB inks and high-end plastics. Advantages: Excellent compatibility; Drawbacks: Primary focus on electronics sector with limited mass production validation cases for automotive coatings.
Standard grade L-1173 for mass industrial production, targeting civil coatings and adhesives. Low annual output of high-purity refined grades with scarce real-world automotive coating implementation cases.
The full GR-1173 product line consists exclusively of general industrial grades with no large-scale mass production of high-purity refined variants, supplied primarily to small and medium coating manufacturers without EU automotive system certification and implementation records.
Combined with the client’s three core application scenarios: automotive exterior transparent top clear coats, interior matte UV coatings and PC lamp housing transparent coatings, three brands (Yangfan, Lianlong, Gurun) were eliminated due to unstable mass production of high-purity grades or substandard weather resistance/precipitation performance. Two leading domestic mid-to-high-end manufacturers (Jiu Ri New Materials, Qiangli New Materials) were selected, with three segmented grades precisely matched to individual application scenarios:
1. JRCure 1103-HP High-purity Refined Grade: Dedicated to automotive exterior transparent top clear coats, featuring ultra-high purity and ultra-low yellowing to match OEM high-gloss clear coat systems for Mercedes-Benz and BMW, resisting yellow discoloration under long-term outdoor exposure;
2. Modified Refined Variant of JRCure 1103 (Custom Fine-tuned Grade): Optimized light-component removal process built on the HP grade for PP/ABS matte interior automotive UV coatings, reducing volatiles to eliminate odor precipitation in enclosed interior components.
TR-1173-F High-end Refined Grade: Designed exclusively for transparent UV coatings on PC lamp housings, delivering low small-molecule precipitation and high-temperature anti-haze performance to resolve the industry-wide pain point of coating fogging after prolonged high-temperature lamp operation.
1. Yangfan New Materials PI-1173-UH: While meeting physical and chemical indices, the product lacks real-world mass production validation data for European automotive coatings, and the client refused to bear risks of formula debugging;
2. Lianlong and Gurun: No mature mass-produced automotive-grade high-purity grades, with product positioning focused on low-end general coatings that fail to meet stringent German automotive environmental and precipitation standards.
1. HiSiaddi unified sample procurement of the three selected grades from both manufacturers, coordinated unified testing at German SGS laboratories and shipped parallel samples to the client’s German R&D center;
2. The client conducted separate small-scale trials across three coating formulas: exterior clear coats, interior matte coatings and PC lamp housing coatings. All three grades fully passed weather resistance, high-temperature precipitation and yellowing testing for their respective application scenarios;
3. Comparative testing against original imported IGM raw materials demonstrated equivalent curing efficiency, weather resistance and precipitation performance, delivering a 24% reduction in overall procurement costs.
1. Initial Trial Order Delivery: Total 22 tons shipped in three consignments with separate drums for the three grades proportioned per client production requirements, shipped from Shanghai Port to Hamburg, Germany;
2. Annual Framework Contract Signed: Full localized substitution of imported raw materials with a 95-ton annual procurement agreement finalized. Jiu Ri grades account for 62% of total procurement volume and the single Qiangli grade accounts for 38%;
3. Subsequent New Project Cooperation: The client’s new UV coating project for new energy vehicle battery casings fully adopted the two brands and grades screened by HiSiaddi.
1. Industry Pain Point: Domestic chemical manufacturer sales teams prioritize internal sales performance, only promoting their proprietary products while avoiding disclosure of competitor strengths. High-end overseas clients lack comprehensive domestic industry intelligence, risking incorrect grade selection leading to scrapped formulas and failed mass production;
2. Core Value of HiSiaddi: Neutral third-party perspective enabling horizontal cross-brand parameter benchmarking and scenario-based grade screening, independent of single manufacturer profit incentives to select materials aligned with end-client formula requirements;
3. Procurement Logic of High-end Clients: German premium automotive raw material selection prioritizes application compatibility over purity indices and unit price. Precise grade matching constitutes the key to successful localized substitution.
For additional comparative analysis of brands and grades, please contact HiSiaddi customer service.
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