Bayhydrol® A 242

Covestro (formerly Bayer MaterialScience) 科思创

Bayhydrol® A 242 is a water-thinnable polyacrylic resin containing hydroxyl groups. It is used as a coreactant for Bayhydur® and Desmodur® polyisocyanates in the formulation of aqueous two-component polyurethane systems for various applications by brush, roller or spray. This product has a viscosity at 23°C, (D = approx. 165 s-1) of 200 ± 100, a non-volatile content (1g, 1h, 125°C) of 42 ± 2, and a pH (10% in demineralized water) value of 7.1 ± 0.7. Bayhydrol® A 242 is a water-thinnable hydroxyfunctional polyacrylic resin with emulsifying properties. It is neutralised with ammonia. Given the special composition of this product, both hydrophilic polyisocyanates, e.g. Bayhydur® 3100, and hydrophobic grades, such as Desmodur® N 3400 and others, are suitable co-reactants. The resultant water-thinnable two-component system cures to yield a polyurethane film with good general properties, and only a small-scale polyurea reaction takes place.

Supplier profile

Documents

No document is attached to this grade yet.

Where it is used

Availability

Covestro (formerly Bayer MaterialScience) 科思创 publishes documents in the marked regions.

Supplier details

Covestro (formerly Bayer MaterialScience) 科思创 lists this grade in the Chemicals DB directory.

More grades from Covestro (formerly Bayer MaterialScience) 科思创

Also from Covestro (formerly Bayer MaterialScience) 科思创

Acclaim® Polyol 12200 N

Acclaim® Polyol 12200 N is a polyether polyol that is suitable for combination with Desmodur® in the formulation of solvent-free or low-solvent polyurethanes. This product is a solvent-free, pale, viscous liquid. Acclaim® Polyol 12200 N is suitable for combination with many Desmodur® products in the formulation of solvent-free elastic coatings, adhesives and sealants. This product can be thinned with solvents such as esters, ketones and aromatics. Only PU grade solvents should be used (< 0.05% by wt. water).

Acclaim® Polyol 18200 N

Acclaim® Polyol 18200 N is a polyether polyol that is suitable for combination with Desmodur® in the formulation of solvent-free or low-solvent polyurethanes. This product is a colorless to yellowish viscous liquid, with a hydroxyl number of 6.0 + 1.0 and a viscosity at 25? of 23,000 + 4,000. Acclaim® Polyol 18200 N is suitable for the formulation of elastic sealants and adhesives. It can be thinned with solvents such as esters, ketones and aromatics. Only PU grade solvents should be used (0.05% by wt. water).

Acclaim® Polyol 4200

Acclaim® Polyol 4200 is a polyether polyol that is suitable for combination with Desmodur® in the formulation of solvent-free or low-solvent polyurethanes. This product is a solvent-free, pale, low-viscousity liquid, with a hydroxyl number of 28.0 ± 1.5 and an acid humber of 0.004 - 0.020. Acclaim® Polyol 4200 is suitable for combination with many Desmodur® products in the formulation of solvent-free elastic coatings, adhesives and sealants. It can be thinned with solvents such as esters, ketones and aromatics. Only PU grade solvents should be used (< 0.05% by wt. water).

Acclaim® Polyol 6300

Acclaim® Polyol 6300 is a polyether polyol that is suitable for combination with Desmodur in the formulation of solvent-free or low-solvent polyurethanes.