Features: Water-Based Blocked, HDI Trimer, 130–140°C Deblock
Application: Textile & Fabric
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BI-35D is an anionic water-based blocked polyisocyanate. Core specifications below are based on Dongsen’s current approved product data source.
| Property | Value |
| Product Type | Water-Based Blocked Polyisocyanate |
| Class | Anionic / Water-Soluble |
| Solid Content % | 35 |
| Valid NCO % | 3.6 ± 0.5 |
| Free NCO % | ≤ 0.2 |
| Viscosity @ 25°C | 2500 ± 500 cps |
| Deblocking Temperature | 130–140 °C |
| Carrier | Water |
BI-35D can be used as a raw-material crosslinker in textile and fabric bonding and lamination formulations.
The Textile / Fabric application direction is confirmed for BI-35D. Final suitability should be validated in the customer’s actual formulation and process conditions.
When to Consider BI-35D
Consider BI-35D when evaluating a water-based, anionic blocked polyisocyanate for textile and fabric bonding or lamination formulations and when its 130–140 °C deblocking-temperature position is relevant to the customer’s process requirements. Refer to Technical Data for the complete numeric specification.
Confirmed Selection Signals
Application Fit
Textile / Fabric is a confirmed application direction for BI-35D. This confirmation establishes application context only and does not establish a guaranteed bond, dosage, formulation or durability result.
Related Grade Directions
BI-35C and BI-35E may also be reviewed as related water-based blocked grades with different grade-selection positions. Refer to each grade’s own current Technical Data rather than transferring specifications between grades.
Ask Dongsen for Grade Selection
Contact Dongsen’s technical team to evaluate the grade against your resin system, substrate and process conditions.
Documents
An approved BI-35D Technical Data Sheet is not currently confirmed for publication. The current approved product data source supports the core specifications shown on this page. For current technical documentation, samples, quotations or grade-selection support, contact Dongsen.
FAQ
What is BI-35D?
BI-35D is an anionic water-based blocked polyisocyanate used as a raw-material crosslinker / curing-agent component in textile and fabric bonding and lamination formulations.
What is the deblocking temperature of BI-35D?
The current approved product data lists a deblocking temperature of 130–140 °C. Final process suitability should be evaluated against the customer’s actual formulation and curing conditions.
Where is BI-35D applied?
The confirmed application direction is Textile / Fabric, including textile and fabric bonding and lamination contexts. This application confirmation does not establish a universal formulation, dosage or performance result.
