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Durable Polyurethane Foam for Effective Industrial Sealing Solutions
US$2.10-4.20
1,000 kg
Sample price:US$100.00/kg.Request sample
Product profile
Customization
AvailableCAS No.
9016-87-9Formula
CH2-Chcl-]NEINECS
208-750-2Appearance
LiquidUsage
Water Treatment Chemicals, Rubber Auxiliary Agents, Plastic Auxiliary Agents, Coating Auxiliary Agents, Textile Auxiliary Agents, Electronics ChemicalsColor
BrownProduct Name
Polymethylene Polyphenyl PolyisocyanateChemical Name
CAS 9016-87-9 Pmdi Methylenediphenyl DiisocyanatBrand Name
DoboStorage Condition
Sealed in Cool and Dry PlaceOEM/ODM
AvailableValidity Period
2 YearsPlace of Origin
Zhejiang, ChinaColour
Brown LiquidTransport Package
30kg/50kg/BagSpecification
250KG/drumTrademark
DOBOOrigin
ChinaProduction Capacity
100000 Ton/Tons Per MonthKey features
Versatile Industrial Application: Used for PU rigid foam, coatings, adhesives, anti-seepage plugging, and automotive parts.
High Foam Fluidity: Unique composition ensures excellent fluidity for products with strict foaming stock requirements.
OEM/ODM Available: Customization services including OEM and ODM are available for specific product needs.
Factory Direct Supply: We are a manufacturer, not a trading company, ensuring direct factory pricing and control.
Fast Delivery Time: General delivery time is 7-10 working days after payment is received.
Quality Assurance System: Strict quality traceability from production to sales with professional after-sales support.
Free Sample Provision: Free samples are available, though freight costs are borne by the buyer.
Flexible Payment Terms: Accepts TT, LC, DA, DP, and other terms as per customer requirements.
Company profile
Business Type: Manufacturer/FactoryExport Year: 2015-10-18Nearest Port: ShanghaiAverage Response Time: ≤3.00hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW, Others
AI-Powered supplier vetting
SummaryNINGBO DONGBO NEW ENERGY CO., LTD. is a limited company focused on plasticizers, including green solvents and green plasticizers. It identifies as a professional technical supplier, has introduced new products within the past year, and provides ODM, OEM, sample customization, and minor customization. Reported methyl oleate productivity is 5,000 tons, and exports account for 90% of total sales, with five years of exporting experience and self-operated import/export rights. The supplier has no overseas warehouse, showroom, agents, or branches, and does not provide 3D software design or SDK services. Its quality assurance and management systems are described by the company, while the audit record does not specify a favorable evaluation result. Financial records are indicated for 2022–2024, but no performance details are provided. It has participated in an identified offline trade fair and reports OEM service for well-known brands, but customer names or verifiable case details are absent.
Supplier typeThe supplier is identified as a professional technical supplier and a limited company whose primary product scope is plasticizers. The English company name is NINGBO DONGBO NEW ENERGY CO., LTD., and it is not indicated to belong to a larger company group.
R&D capabilityThe supplier reports R&D capability as a professional technical supplier, new products within the past year, and ODM services. Its limitations include no 3D software design service and no available SDK, indicating product-oriented development capability rather than confirmed software or advanced digital-design capability.
Production capacityReported methyl oleate productivity is 5,000 tons, and the supplier states a lead time within 15 workdays in both peak and off-season. The company has five employees and the number of cooperative suppliers is reported as zero, so the stated production figure is positive but broader production scale and supply-chain depth remain unclear.
Customization capabilityThe supplier provides customization from samples and minor customization, and it reports ODM and OEM capability, including OEM service for well-known brands. These explicit services support a positive assessment, although no evidence is provided for complex or fully customized engineering services.
Product Q&A
Q:What are the NCO contents, viscosities, and free MDI levels of DOBO's three Modified Isocyanate grades 8310, 8223, and 8018?
A:
DOBO supplies three precision grades: 8310 equivalent at NCO 28-30% with viscosity 100-300 mPa.s (fast RIM cycles, 3-5 min demold); 8223 equivalent at NCO 22-24% with viscosity 300-800 mPa.s (best all-rounder for cast elastomers, rollers, and coatings with 8-20 min pot-life); and 8018 equivalent at NCO 18-20% with viscosity 500-1,500 mPa.s and free monomeric MDI below 0.05 wt% -- the only grade fully compliant with EU Directive 2022/1246 for professional and consumer use since August 2023. Every
Q:Why is Modified Isocyanate 15-50% more expensive than standard PMDI, and is the premium actually worth it for my production?
A:
Modified Isocyanate's 15-50% premium over standard PMDI is an investment in process efficiency, not a markup -- here's why. The pre-reaction step consumes extra polyol, energy, and QC overhead to produce a liquid product with a freeze point below -10 deg.C that requires no pre-heating or melt-handling. The extended pot-life (8-40 minutes vs. 2-3 minutes for PMDI) enables hand-casting and large mold filling that PMDI simply cannot support. Grade 8018's sub-0.05% free MDI content makes your finish
Q:Is your Wannate 8018 equivalent fully compliant with EU Directive 2022/1246 for professional adhesives and consumer repair kits?
A:
Yes -- DOBO 8018 grade is certified with free monomeric MDI content below 0.05 wt%, which is half the 0.1% legal threshold set by EU Directive 2022/1246 that took effect on August 24, 2023. This is a GC-verified value printed on every batch COA, not a marketing claim. What this unlocks for you is significant: you can legally sell professional-grade isocyanate adhesives, sealants, and consumer repair kits in the EU without requiring mandatory industrial hygiene training for end-users -- a restric
Q:How does DOBO Modified Isocyanate batch quality and NCO consistency compare to branded equivalents from Wanhua, Covestro, and BASF?
A:
DOBO grades are performance-equivalent alternatives to the Wannate, Desmodur, and Lupranat product lines, with quality consistency that meets or exceeds industry norms. Our NCO batch-to-batch tolerance is +/-0.3 wt% -- tighter than the typical +/-0.5-1.0 wt% across the industry -- and we test 100% of production batches before release, whereas the common industry practice is 10-50% sampling. Key process differentiators include: all drums filled under dry nitrogen blanket at production with water
Q:From placing a deposit to goods arriving at my destination port, what is the total lead time for a 5 MT Modified Isocyanate order?
A:
The end-to-end timeline for a 5 MT order (25 drums x 200 kg) breaks down as follows: formal Proforma Invoice issued within 1 hour of inquiry; production takes 3-5 business days for in-stock grades 8310 and 8223, or 10-20 business days for custom NCO band orders and 8018 grade; pre-shipment NCO retest and COA preparation takes 1 business day; DG documentation including DGD, commercial invoice, packing list, certificate of origin, and REACH compliance pack takes 1-2 business days. Ocean transit fr
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