Baybond® XL 7270 

Baybond® XL 7270 is a waterbased aliphatic blocked polyisocyanate that is suitable for use as a crosslinker for glassfiber sizings. This product has a non-volatile content (0.9 - 1.1g / 1h / 125°C, convection oven) of 30 ± 1, a flow time at 23°C, (4mmcup) of 10-14, and a pH value at 20°C (supply form) of 7-8.

Baybond® XL 7270 was developed as crosslinker for the sizing of glass fibers used in combination with Baybond binders to reinforce thermoplastics, particularly polyamide. Glass fiber sizes based on Baybond® XL 7270 are characterized by their good colorfastness, even at elevated temperatures. The mechanical film properties of sizings based on Baybond® XL 7270 are developed fully by postcrosslinking at temperatures from 170°C for a duration of 20 minutes. The product is compatible with the additives normally used in the formulation of glass sizes, e.g. adhesion promoters, lubricants, antistatic agents and plasticizers.






Covestro (formerly Bayer MaterialScience) 科思创

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