Features: Water-dispersible, HDI Trimer, 130–140°C Deblock
Application: Textile & Fabric
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| Property | Value |
|---|---|
| Product Type | Water-based blocked polyisocyanate crosslinker |
| Isocyanate Type | HDI Trimer |
| Ionic Form | Anionic / water-dispersible |
| Solid Content | 70% |
| Valid NCO | 7.2 ± 0.5% |
| Free NCO | ≤ 0.2% |
| Viscosity | 4000 ± 1500 cps at 25°C (rotational viscometer) |
| Deblocking Temperature | 130–140°C |
| Carrier | PMA |
Specifications are based on Dongsen’s current approved product data source. Final suitability should be validated in the customer’s actual formulation and process conditions.
BI-70D can be considered for textile and fabric bonding or lamination formulations where a water-based blocked polyisocyanate crosslinker is required.
Dongsen supplies BI-70D as a raw-material crosslinker rather than a finished textile adhesive.
Final suitability should be validated in the customer’s actual formulation and process conditions.
Consider BI-70D for textile and fabric bonding or lamination formulations that require a water-dispersible blocked HDI-trimer crosslinker.
A key selection signal is its confirmed 130–140°C deblocking range. Confirm that the product specification matches the intended formulation and thermal process, and refer to the Technical Data tab for the complete specification.
Related grade directions include BI-70C and BI-70E within the same water-dispersible blocked family with different deblocking ranges, while BI-35D provides a water-soluble lower-solids direction within the same confirmed Textile / Fabric application context. These are selection directions only, not performance comparisons.
For grade-selection support, provide Dongsen with the formulation system, intended process conditions and application requirements for product-specific evaluation.
Contact Dongsen technical support to confirm and request the current technical and safety documentation available for BI-70D.
What is BI-70D?
BI-70D is a water-based, water-dispersible blocked polyisocyanate (HDI trimer) crosslinker supplied by Dongsen as a raw material.
What applications can BI-70D be considered for?
BI-70D has a confirmed Textile / Fabric application direction and can be considered for textile and fabric bonding or lamination formulations. Final suitability should be validated in the customer’s actual formulation and process conditions.
What is the deblocking temperature of BI-70D?
Dongsen’s current product data source specifies a 130–140°C deblocking range for BI-70D. Refer to the Technical Data tab for the complete specification.
