As a new-type foreign trade service provider driven by both technology transformation and export business, HiSiaddi has built a service system of "1+2+3+4=1" and can supply original factory EBS dispersant from multiple well-known brands.
Equipped with R&D capabilities, HiSiaddi has repeatedly collaborated with manufacturers on technology conversion and accurately captured market demands to propose formula optimization schemes and application improvement suggestions for ethylene bis stearamide (EBS) dispersant. Below is a case of formula optimization consultation for EBS dispersant by HiSiaddi.
Please contact HiSiaddi customer service if you need more formula optimization consultation services.
HiSiaddi delivered comprehensive technical rectification covering raw material modification, formula fine-tuning, and production line processes
Headquartered in Lyon, France, FrancoColor is a specialized domestic French manufacturer of high-end functional masterbatch with 30 years of expertise in three core categories: food-contact PP masterbatch, automotive interior modified masterbatch, and high-end home appliance flame-retardant masterbatch. Its end customers include Danone food packaging, PSA automotive interior plastics, and Schneider Electric housing raw materials. All products comply with EU REACH, French DGCCRF food contact, and RoHS environmental standards. The company previously sourced high-purity modified EBS from the Netherlands on a long-term basis with an annual total EBS purchase volume of 192 tons split into 76 tons food-grade, 84 tons automotive interior grade, and 32 tons home appliance flame-retardant grade.
The client’s formulations have undergone over a decade of reliability validation with fixed base resins and pigment systems that cannot be drastically modified. It prioritizes performance and strict impurity control and cannot rely on major formula adjustments to offset raw material defects, distinguishing it from low-end buyers purchasing standard industrial EBS with freely adjustable formulations.
Hit by surging European chemical raw material prices, production shutdowns at Dutch factories for maintenance, and extended delivery lead times of 112 days for imported EBS, FrancoColor launched a domestic EBS substitution program. Through industry channels, the client sourced 40 tons of standard national standard mass-produced EBS from a well-established domestic EBS manufacturer for pilot production across three production lines. Within two weeks of production launch, three fatal mass-production defects emerged: poor pigment dispersion with abundant white spots in high-titanium dioxide filled masterbatch, surface bloom precipitation on finished products extruded at 220℃, heavy smoke and excessive VOC emissions during high-temperature processing of flame-retardant masterbatch. Production yield plummeted from 99.3% to 63%, forcing multiple production lines to cut output or suspend operations.
The raw material manufacturer could only provide national standard physical and chemical test reports, focusing solely on basic indicators including melting point and acid value, without a masterbatch downstream application R&D team. Unable to identify root causes from molecular structure and formulation compatibility perspectives, the factory insisted its factory-exit products met standards and attributed failures to the client’s own production formulas and extrusion equipment. Unable to locate the source of defects, the client’s R&D department fully entrusted HiSiaddi’s technical team to analyze failures and deliver a complete set of technical optimization solutions, signing an annual 192-ton long-term supply agreement once rectification passed verification.
Benchmark technical parameters of Dutch imported EBS specified by the client: acid value ≤3.5mgKOH/g, heating loss ≤0.2%, free fatty acid ＜0.15%. At a dosage of 1.3%~1.9%, no agglomerated white spots form in high-titanium dioxide filled systems, no surface precipitation occurs under 230℃ high temperature extrusion, extrusion smoke volume is minimal, and VOC levels comply with EU environmental limits.
For PP masterbatch with 65% titanium dioxide loading, adding EBS at the original 1.5% dosage produced visible dense 0.1~0.3mm white agglomerate particles on extruded pellets after twin-screw compounding, leading to fish eyes on downstream injection-molded films. Batches of semi-finished goods were sealed and scrapped for failing incoming quality inspection for Danone food packaging.
After injection molding of interior PP masterbatch, white bloom appeared on product surfaces after 72 hours of room-temperature storage with a sticky tactile texture, failing incoming inspection by PSA automakers and halting usage of full batches of raw materials.
At extrusion temperatures of 215~225℃, large volumes of white irritating smoke discharged from the barrel and die head, pushing workshop VOC readings above French environmental control thresholds and risking production shutdown for environmental rectification.
HiSiaddi formed a special team of additive synthesis engineers, masterbatch formulation engineers, and third-party testing specialists. Domestic EBS samples and Dutch original EBS were simultaneously submitted to a CNAS-accredited laboratory for full-component physical and chemical analysis, accurately confirming defects stemmed from intrinsic compositional flaws in domestic EBS rather than the client’s formula or equipment:
1. Excess free stearic acid and low-molecular amide byproducts cause bloom and precipitation Domestic EBS adopts one-time high-temperature synthesis with incomplete amination, measuring free stearic acid at 1.28% (≤0.13% for Dutch original products) alongside 1.1% low-molecular monoamide impurities. These low-molecular components have poor compatibility with PP resin and slowly migrate to product surfaces at room temperature to form white bloom.
2. Weak molecular polarity lacking polar modified side chains reduces pigment wetting and dispersion capacity Standard EBS features a linear ethylene bis stearamide structure without polar side groups, making it unable to firmly adsorb polar titanium dioxide powder. It cannot break pigment agglomerates under high-filler conditions, resulting in dispersed white spots.
3. Excess low-boiling volatile components generate smoke and elevated VOC under heat Simplified rectification and devolatilization processes leave residual low-carbon fatty acids and unreacted ethylenediamine small molecules, which vaporize under high-temperature extrusion to form smoke and push VOC readings above limits.
Domestic manufacturers only test for melting point, color, and total acid value per national standards, failing to enforce controls over free fatty acids, low-molecular byproducts, and volatile fractions — three indicators critical to high-end masterbatch downstream performance. Products are deemed qualified upon factory exit despite hidden application risks for premium masterbatch production.
1. Synthetic section upgrades: Adopt three-stage gradient temperature-controlled amination synthesis with segmented temperature dehydration and extended negative-pressure heat preservation reaction time to boost conversion rates of stearic acid and ethylenediamine and reduce free fatty acid content. Trace polar comonomers are added mid-reaction to modify EBS molecular polarity and strengthen pigment wetting and coating capacity.
2. Post-processing section upgrades: Add a high-temperature negative-pressure devolatilization process to remove low-boiling small-molecule byproducts and residual amines under vacuum, controlling volatile fractions ≤0.18%. Simultaneously switch feedstock to high-purity imported palm-based stearic acid to eliminate impurities from industrial mixed acids. Post-upgrade product indicators: free fatty acid ≤0.12%, heating loss ≤0.19%, acid value 3.2mgKOH/g, fully matching key indicators of Dutch imported raw materials.
Leveraging HiSiaddi’s in-house masterbatch pilot lab, gradient compatibility tests were conducted using the client’s original fixed resin and pigment systems without modifying core raw material ratios:
1. High-filler white food-grade masterbatch: Adjust EBS dosage from 1.5% to 1.35%, compound with 0.12% food-grade calcium stearate to synergistically improve titanium dioxide dispersion and eliminate agglomerated white spots;
2. Automotive interior masterbatch: Lower EBS dosage to 1.4%, compound trace high-molecular PE wax to balance internal and external lubrication and suppress small-molecule migration and precipitation;
3. Flame-retardant home appliance masterbatch: Maintain EBS dosage at 1.6%, add 0.08% high-temperature resistant antioxidant to inhibit thermal decomposition of EBS and reduce smoke emission during processing.
1. Mixing process: Reduce high-speed pre-mixing temperature from 85℃ to 72℃ and extend pre-mixing duration by 3 minutes to ensure full melting and coating of pigments by EBS;
2. Twin-screw extrusion: Lower barrel zone 1 & 2 temperatures by 5~8℃ and strengthen negative-pressure vacuum extraction on the twin-screw extruder to further remove volatile small molecules during processing and mitigate smoke issues at the production stage.
Three batches totaling 40 tons of customized EBS separated by grade were shipped via Shanghai Port to Le Havre Port, France. FrancoColor ran full-load continuous production across its three lines for 38 consecutive days for verification:
1. Food-grade white masterbatch: Uniform titanium dioxide dispersion free of white spots and fish eyes, fully passing third-party food migration testing required by Danone;
2. Automotive interior masterbatch: Zero bloom precipitation after 30 days of room-temperature storage, successfully passing PSA automaker incoming inspection;
3. Flame-retardant home appliance masterbatch: Drastically reduced smoke emission during high-temperature extrusion with workshop VOC levels compliant with French environmental regulations, passing sample testing for Schneider Electric.
All three product lines delivered performance fully matching Dutch original EBS. The client reduced procurement volume from the Dutch manufacturer and signed a quarterly long-term supply agreement for 192 tons per year (76 tons food-grade, 84 tons automotive grade, 32 tons home appliance grade) with HiSiaddi. Localization substitution cut the client’s comprehensive raw material procurement cost by 27.3% and shortened delivery lead times from 112 days to 37 days, eliminating persistent issues of tight European raw material supply and price hikes.
Most domestic EBS factories only conduct testing aligned with Chinese national standards, controlling solely melting point, color, and total acid value without monitoring free fatty acids, low-molecular byproducts, and volatile fractions — indicators critical to high-end masterbatch performance. Production focuses on standard industrial spot goods without masterbatch formula R&D teams familiar with processing conditions for food and automotive premium masterbatch. Manufacturers can only serve low-end, rudimentary plastic clients and fail to meet refined production demands of European and American mid-to-high-end enterprises.
Unlike low-end buyers who can freely adjust resin and pigment ratios to offset raw material defects, European food and automaker supporting mid-to-high-end masterbatch enterprises rely on formulations validated over years that cannot be modified. Procurement requires not only raw materials meeting physical and chemical standards but also end-to-end technical implementation covering raw material modification, formula fine-tuning, and production process optimization — a mandatory demand absent from low-volume spot trade.
Moving beyond traditional spot resale, HiSiaddi combines expertise in EBS synthesis processes and masterbatch formulation. It drives technical upgrades to upstream factory processes to improve intrinsic raw material quality while conducting minor additive system adjustments and standardized mass production parameter tuning based on the client’s original formulations. This fills the industry gap where manufacturers lack downstream formulation expertise and masterbatch producers lack raw material synthesis knowledge. HiSiaddi locks in premium European clients via specialized technical services, supporting domestic high-end EBS to enter premium European plastic supply chains for food and automotive applications.
Please contact HiSiaddi customer service if you need more formula optimization consultation services.
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