Limewash paints

Limewash paints are aqueous slurries of slaked lime (lime hydrate) with added pigment. The chemical reaction of the lime hydrate with atmospheric carbon dioxide results in a non-film forming coating which is not resistant to acidic gases.

 

They are mostly used in hot climates where they can be used in for both interior and exterior painting. Often, they have poor hiding power and several coatings must be applied. Consistency and application properties can be improved by the addition of Tylose® MH-types, which also allows higher pigmentation. The addition of polymer dispersions prevents chalking. Limewash paints may not be used on substrates containing gypsum.

 

Low to medium viscosity Tylose® MH-types are recommended.

Tylose Grades
Product Characteristic  
Fact Sheet
MH 2000 YP2
Thickening effect : low
MH 6000 YP4
Thickening effect : moderate

Coating materials

Coating material

Due to numerous properties, Tylose® is an important component in water based paints. The most essential properties of Tylose® for the optimisation of coatings are; adjustment of consistency, water retention, binding power and the function as a protective colloid.

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Nomenclature Information

M
H
O
A
X



B
F
S
T
Type of ether
Methyl
Hydroxyethyl
Hydroxypropyl
Allyl
Hydrophobe
etherification

Degree of
etherification
Special higher
degrees of
etherification,
depending on the
individual type of
ether

60000
30000
15000
10000
6000
4000
2000
1000
300
200
.
.
.
01
02
03
04
.
.
.
Viscosity level
The viscosity level
is based on
Hoeppler: 2%
solution of the
commercial product
with 5% moisture
content, 20ºC,
20º dH
(German hardness)








Consistency
increasing
modification
The least one of
the two last
digits is a
number > 0

Y
K
N




G4
G6
G8

P2
P3
P4
P6
Chemical refinement
Delayed solubility products
Readily soluble granules
non-delayed solubility products
(only for Tylose H grades) *

Degree of particle size
Types of granules:
Granules (< 500 μm)
Granules (< 400 μm)
Granules (< 300 μm)
Powder types:
Powder (< 180 μm)
Fine Powder (< 125 μm)
Fine powder (< 125 μm)
Ultra fine powder (< 100 μm)
* Tylose MH and MO Grades are not explicitly marked by ”N”, even if these products are ”non-delayed solubility products”.
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