Xiangrun New Materials – Waterborne Acrylic Emulsion & PU Resin Manufacturer Waterborne 2K polyurethane lives or dies on the isocyanate side: pot life, hydrophilicity, film clarity and chemical resistance all trace back to the curing agent. Xiangrun supplies the complete raw material set for waterborne PU producers — hydrophilic HDI curing agents, chain extenders and crosslinkers — as imported originals and proven equivalents.
Raw Material Selection
| Component | Recommended grades | Application note |
|---|---|---|
| Hydrophilic HDI curing agents | Asahi Kasei 22A-75PX / TPA-90SB / TKA-90SB; E402-90T, X-3085-5, WM44-L70G, K60X | Match NCO content and hydrophilicity to your pot-life target |
| Chain extenders | DMPA, DMBA, X-106 / X-107, DMSQ | DMBA for lower processing temperature vs DMPA |
| Crosslinkers & blocking | CA-95, X-221 intermediate, DMP blocking agent | Blocked systems for 1K stoving applications |
| One-component self-crosslinking | L-331 type self-crosslinking systems | When 2K handling is not practical for your customer |
Formulating for wood, leather, glass or industrial metal topcoats — tell us the substrate and resistance targets, and we recommend the pairing (dispersion + curing agent + ratio) rather than a single SKU.
Why Formulators Buy From Xiangrun
- Originals and equivalents under one roof: we distribute imported grades from ADEKA, Asahi Kasei, Clariant, Wacker, Croda, Evonik and PUCORE — and manufacture our own X-series / L-series equivalents when you need the same performance at a better cost.
- Free samples, freight collect: tell us your system and benchmark — the sample is free, shipped collect on your DHL/FedEx account, and most reach Europe within a week.
- Technical answers, not sales talk: our lab replies with starting-point dosages and compatibility notes for your specific formulation.
- Consistent supply: batch-to-batch COA, flexible MOQ from one drum, and export documentation handled for you.
Frequently Asked Questions
How do I choose between 22A-75PX and a domestic equivalent?
Run them side by side: we ship both with a mixing-ratio sheet. Typical results show comparable gloss and chemical resistance; differences appear mainly in pot life and haze in thick films – which matter differently per application.
What pot life should we expect in a waterborne 2K system?
With hydrophilic HDI curing agents, practical pot life is typically 2-4 hours depending on NCO:OH ratio, temperature and co-solvent. Our TDS includes pot-life curves; we help you tune ratio for your line speed.
DMPA vs DMBA – which chain extender?
DMBA dissolves at lower temperature and shortens the process cycle; DMPA remains the cost-effective standard. If your reactor heating is a bottleneck, DMBA usually pays for itself in throughput.
Do you provide REACH and transport documentation?
Yes – SDS, TDS, batch COA and transport classification for isocyanate products, with export packing compliant for EU/UK import.
Request Samples or a Quotation
Tell us your PU system and targets — we’ll recommend the full raw-material pairing and send free samples — the samples are free, freight collect on your courier account.