Customer

Dispersions for conventionally drying waterborne parquet coatings


For high traffic floors a two-component waterborne coating based on a Bayhydrol® dispersion in combination with a Bayhydur® polyisocyanate offers the best performance. By selecting an appropriate grade of a waterdispersible Bayhydur® polyisocyanate the coating system can be adjusted to the performance needed.

A selection of raw materials for one- and two-component parquet applications:

Waterbased dispersions:
Type
Solids in %
pH
Viscosity
mPas
at 23°C
Characteristics
Bayhydrol®
UH 2558
Polyurethane
dispersion
35
8.0
< 100
Solvent-free, tough, but flexible, good mechanical and chemical resistance
Bayhydrol®
UH 2557
Polyurethane
dispersion
37
8.0
< 100
Solvent-free, fatty acid modified, outstanding abrasion resistance
Bayhydrol®
UH 2593/1
Polyurethane
dispersion
35
8.0
< 250
Solvent-free, fatty acid modified, good mechanical and chemical resistance, excellent grain wetting
(Product presentation)
Bayhydrol®
UH XP 2719
Polyurethane
dispersion
40
8.0
< 100
Solvent-free, hard, fast blocking resistance and high abrasion resistance
(
Product presentation)
Bayhydrol®
U XP 2755
Polyurethane polyol dispersion
38
8.0
3000
Solvent-free, for 2K systems with high mechanical and chemical resistance and excellent appearance on wood
Bayhydrol®
UA 2773 XP
Aromatic Polyyurethane-Polyacrylate dispersion
35
8.5
< 100
Solvent-free, high mechanical and chemical resistance, excellent wood warmth
Bayhydrol®
A 2651
Polyacrylate dispersion
41
8.5
2000
For 2K high-gloss systems, excellent grain wetting
Bayhydrol®
AH XP 2741
Polyacrylate dispersion
40
7.0
< 100
Solvent-free, for one-component clearcoats, topcoats and primers, outstandig chemical resistance, good hardness
(
Product presentation)

Polyisocyanate crosslinkers for waterbased dispersions:
Type
Solids in %
% NCO on solids
Viscosity
mPas
at 23°C
Characteristics
Bayhydur® 305
HDI-Polyisocyanate
100
16.2
6500
For glossy, transparent coatings, easy formulation
Bayhydur® 3100
HDI-Polyisocyanate
100
17.4
2800
Hydrophilic crosslinker for polyurethane dispersions to enhance the property profile
Bayhydur®
XP 2700
HDI-Polyisocyanate
65
16.2
80
Ready-to-use supply form of Bayhydur® 305, diluted to 65% in DPGDME
Bayhydur®
XP 2759
IPDI-
polyisocyanates
70
11.0
6500
Hydrophilic crosslinker in combination with HDI-based grades to enhance drying properties

Some sample starting formulations:

RR 6674water-based two component clear coat (Bayhydrol® UH 2558, Bayhydur® 305 or Bayhydur® XP 2700)

RR 6694water-based one component semigloss clear coat (Bayhydrol® UH 2557)

Additional starting formulations are available on request.

Please have a look at:
Versatility of solvent free PUD for coating wood / Wood Coating Congress 2008 in Amsterdam


Product presentation: Bayhydrol UH XP 2719

Product presentation: Bayhydrol AH XP 2741

Product presentation: Bayhydrol UH 2593/1

Presentation: "Bayhydrol UA 2773 XP 1K aqueous Dispersion with perfect wood wetting"

All raw materials for wood coatings in this brochure:

Raw materials for Wood and Furniture Coatings


Technical data and application information in these product overviews:

Produktbroschüre Dispersionen
Dispersions - Products and Applications
Produktbroschüre - Bayhydrol A
Bayhydrol® A - designed for high Performance - engineered for Success
The Toolbox for waterborne 2K Polyurethane coatings systems

Presentation: UV-curing industrial to on site RadTech 2011

Presentation: How to decide on the right primer for wood RadTech 2011


NMP free Polyurethane-Polyacrylate dispersions
Get more information about NMP-free dispersions for wood coatings here.

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