As a new foreign trade service provider driven by both technology transformation and foreign trade services, HiSiaddi has built a "1+2+3+4=1" service system and can supply polymeric brominated epoxy resins sourced directly from multiple well-known original manufacturers. As a foreign trader with independent R&D capabilities, HiSiaddi has repeatedly resolved customized product demands for polymeric brominated epoxy resins through technological cooperation with factories and precise market insight. Below is a case of HiSiaddi addressing customized demands for polymeric brominated epoxy resins.
Contact HiSiaddi customer service if you require further customized service support.
Client: Japan Elite Electronics A leading high-end electronic component manufacturer in Japan, specializing in high-end copper clad laminates (CCLs), semiconductor packaging substrates and automotive electronic circuit boards. Its products are supplied to globally renowned brands including Toyota, Sony and Kyocera. The company strictly complies with EU REACH, RoHS 2.0, PBDE-free, UL94 V-0, low ion precipitation, high heat resistance and other standards. It is a mid-to-high-end client with high technical barriers and zero tolerance for quality defects. When sourcing materials, it prioritizes product performance, process compatibility and long-term stability, with low price sensitivity.
The client developed a new generation of high heat-resistant automotive electronic CCLs and selected polymeric brominated epoxy resin as the core flame retardant resin system, putting forward multiple exclusive customized indicators. After communicating with multiple domestic manufacturers in the early stage, all suppliers could only provide general standard grades and failed to adjust formulas and physical properties according to CCL production processes and end-use operating conditions, stalling the client’s R&D progress. The client finally entrusted HiSiaddi to coordinate technical communication, formula optimization, multiple rounds of sampling, pilot mass production and full-process delivery.
In consideration of high-temperature lamination of CCLs, long-term vehicle service and precision electronic operating environments, the client specified five core customized indicators, which are also technical bottlenecks hard to overcome for general off-the-shelf products:
1. Precisely controlled bromine content: Strictly limited to 18%±0.5%, balancing flame retardancy and resin bonding strength. General products feature a broad bromine content range and cannot match formulation ratios accurately.
2. Customized high softening point: Controlled at 85~90℃ to adapt to segmented hot pressing of CCLs and avoid resin flow and interlayer dislocation during processing. Conventional products have low softening points and tend to cause glue overflow defects.
3. Ultra-low ion content: Sodium and chloride ion content both ≤10ppm to prevent electrochemical corrosion and short circuits on precision circuits. Ordinary products retain excessive ion residues and cannot be applied to high-end electronic components.
4. Low volatility & high heat resistance: Thermal decomposition temperature ≥360℃ with no small molecule volatiles under 280℃ processing environment, ensuring stable board appearance and electrical performance.
5. Narrow molecular weight distribution: Narrowed weight-average molecular weight range to guarantee uniform resin curing rate, eliminating batch fluctuations in overall board hardness and flame retardancy of CCLs.
Most domestic manufacturers adopt standardized mass production processes and are reluctant to adjust polymerization, purification and post-treatment procedures for customized orders, with little willingness to conduct R&D for small-batch customization, leaving the client’s demands unfulfilled for a long time.
HiSiaddi set up a special technical team and collaborated with domestic partner factories specializing in R&D of electronic-grade brominated epoxy resins. We followed the workflow of demand decomposition → process reconstruction → sample iteration → machine verification → exclusive mass production → compliance support to tackle technical challenges one by one.
We organized online special meetings between both technical teams and signed Chinese-English technical agreements to lock indicator thresholds and industry test standards. Laboratory testing revealed the root defects of general products: crude control of polymerization reactions leading to wide fluctuations in bromine content and molecular weight; simplified purification processes causing excessive inorganic salt ion residues; single molecular structure design resulting in mismatched softening point and thermal stability for high-end processing conditions. Targeted process optimization schemes were formulated accordingly.
1. Precise bromine control & polymerization system adjustment We accurately adjusted bromine feed ratio, reaction temperature and duration, adopting segmented bromination technology to stabilize bromine content at approximately 18%. A precise temperature control system was deployed to narrow molecular weight distribution and ensure consistent curing rate.
2. Molecular structure modification to raise softening point We optimized the main chain structure of epoxy resin and adjusted end group proportions, paired with post-curing aging processes to stabilize product softening point at 87℃, perfectly matching the client’s segmented hot pressing process and completely eliminating glue overflow issues.
3. Multi-stage deep purification to limit ion residues A three-stage deionized water washing + vacuum filtration process was added, paired with ion exchange resin for deep salt removal, lowering sodium and chloride ion content to below 8ppm and meeting anti-corrosion requirements for high-end electronics.
4. Enhanced heat-resistant system We optimized molecular crosslinking structures and removed low-boiling small molecule impurities, lifting thermal decomposition temperature to 365℃ with zero volatilization or decomposition under high-temperature processing.
· First batch samples: Bromine content and softening point met standards, but ion content slightly exceeded limits. The team optimized water washing and filtration parameters for rectification.
· Second batch samples: All physical and chemical indicators complied with requirements. The client conducted full-process trial production including CCL batching, hot pressing and curing, producing smooth boards free of glue overflow and delamination.
The client completed full tests on flame retardancy, electrical performance and high-low temperature cycling, with all test data exceeding standard requirements, and finalized the mass production process.
The factory opened an independent production line for customized products to avoid cross-contamination with general-grade materials. The first customized order of 3.5 tons was produced with full-time technical staff on-site for inspection, and full physical and chemical testing was performed on samples from each batch. English COA, ion content reports, thermal analysis reports and molecular weight distribution charts were delivered with goods to achieve full traceability.
Moisture-proof sealed iron drums lined with anti-static inner film were adopted, suitable for electronic chemical storage and ocean transportation. Outer packaging was printed with English product names, customized model numbers, batch numbers and GHS hazard labels. A full set of compliance documents including REACH, RoHS, polybrominated compound screening reports and English standard SDS were provided, alongside Chinese-English technical operation guidelines specifying mixing ratios, processing temperatures and storage specifications.
1. Full delivery of customized requirements: 3.5 tons of customized polymeric brominated epoxy resin were delivered successfully, with all indicators meeting client requirements. The finished CCLs passed full certification for Toyota and Sony automotive electronics and entered formal mass production.
2. Greatly improved production quality: The resin delivered excellent process adaptability, eliminating glue overflow and delamination during hot pressing. Stable electrical and flame retardant performance of boards boosted production yield from 88% to over 99.2%.
3. Long-term in-depth cooperation: The client designated this customized product as its primary raw material with stable monthly procurement of 3~5 tons. Subsequently, all customized and procurement businesses for multiple electronic special flame retardant resins were fully entrusted to HiSiaddi.
4. Word-of-mouth market expansion: The client recommended HiSiaddi’s customization services to two other high-end electronic substrate manufacturers in Japan, further expanding market resources in Japan and South Korea.
This Japanese client is a typical high-end electronics purchaser whose core demand extends beyond basic raw materials, but customized resin products and supporting technical solutions compatible with sophisticated production processes and harsh service environments. Most domestic factories rely on standardized mass production and lack refined formula and process adjustment capabilities, making them unable to satisfy high-end customization demands.
HiSiaddi integrated upstream and downstream technical resources and completed full-chain process upgrades covering bromination polymerization, molecular structure design, deep purification and finished product control, providing one-stop solutions to the client’s customization challenges. Breaking away from the traditional pure supply trade model, we built deep trust through professional technical services and successfully transformed into a customized solution provider for high-end electronic chemicals, forming long-term stable strategic partnerships with clients.
Contact HiSiaddi customer service for more customized service support.
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